Implement crouching

Merge pull request 'Add shifting ECB based on bone positions (melee-like)' (#61 ) from ecb into master
Reviewed-on: #61
2026-09-25 19:59:53 +02:00 · 2026-09-25 14:42:54 +00:00 · 2026-09-25 16:29:11 +02:00 · 2026-09-25 16:00:21 +02:00 · 2026-09-25 15:45:55 +02:00 · 2026-09-25 10:45:27 +00:00
110 changed files with 8402 additions and 3610 deletions
@@ -1,7 +1,7 @@
 # for Linux
 [target.x86_64-unknown-linux-gnu]
 linker = "clang"
-rustflags = ["-C", "link-arg=-fuse-ld=/usr/bin/mold", "-Zshare-generics=y", ]
+rustflags = ["-C", "link-arg=-fuse-ld=/usr/bin/mold", "-Zshare-generics=y", "-D", "warnings", ]

 [unstable]
 codegen-backend = true
@@ -10,4 +10,4 @@ codegen-backend = true
 codegen-backend = "llvm"

 [profile.dev.package."*"]
-codegen-backend = "llvm"
+codegen-backend = "llvm"
@@ -0,0 +1,218 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  build-and-test:
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    steps:
+      - name: Check out source
+        uses: actions/checkout@v4
+
+      - name: Install Lore CLI
+        run: |
+          scripts/install-lore.sh "$RUNNER_TEMP/lore-bin"
+          echo "$RUNNER_TEMP/lore-bin" >> "$GITHUB_PATH"
+
+      - name: Select Lore asset branch
+        run: |
+          branch=main
+          if [[ "$GITHUB_EVENT_NAME" == pull_request ]]; then
+            branch="$(python3 -c 'import json, os; e=json.load(open(os.environ["GITHUB_EVENT_PATH"], encoding="utf-8")); p=e["pull_request"]; print(p["head"]["ref"] if p["head"]["repo"]["full_name"] == os.environ["GITHUB_REPOSITORY"] else "main")')"
+          fi
+          echo "LORE_BRANCH=$branch" >> "$GITHUB_ENV"
+          echo "Using Lore branch: $branch"
+
+      - name: Fetch assets from Lore
+        env:
+          LORE_CI_USERNAME: ${{ secrets.LORE_CI_USERNAME }}
+          LORE_CI_PASSWORD: ${{ secrets.LORE_CI_PASSWORD }}
+          LORE_AUTH_URL: https://auth.eirexe.moe
+        run: scripts/update-assets.sh "$LORE_BRANCH"
+
+      - name: Install Rust toolchain
+        run: |
+          curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | \
+            sh -s -- -y --profile minimal
+          echo "$HOME/.cargo/bin" >> "$GITHUB_PATH"
+          "$HOME/.cargo/bin/rustup" toolchain install nightly-2026-09-14 --profile minimal
+
+      - name: Cache Rust dependencies and build artifacts
+        uses: Swatinem/rust-cache@6323deb102c322ba6fcbdcafc7e3dddab59af2b6 # v2.9.2
+        with:
+          prefix-key: v2-rust
+          shared-key: linux-nightly
+          cache-bin: false
+
+      - name: Install Linux dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install --no-install-recommends -y \
+            clang \
+            libasound2-dev \
+            libudev-dev \
+            libusb-1.0-0-dev \
+            libwayland-dev \
+            libx11-dev \
+            libxkbcommon-dev \
+            libxkbcommon-x11-0 \
+            mesa-vulkan-drivers \
+            mold \
+            pkg-config
+
+      - name: Build
+        run: cargo build --locked -j 4
+
+      - name: Run unit tests
+        run: cargo test --locked --lib -j 4
+
+  production-build:
+    runs-on: ubuntu-latest
+    timeout-minutes: 45
+    steps:
+      - name: Check out source
+        uses: actions/checkout@v4
+
+      - name: Install Lore CLI
+        run: |
+          scripts/install-lore.sh "$RUNNER_TEMP/lore-bin"
+          echo "$RUNNER_TEMP/lore-bin" >> "$GITHUB_PATH"
+
+      - name: Select Lore asset branch
+        run: |
+          branch=main
+          if [[ "$GITHUB_EVENT_NAME" == pull_request ]]; then
+            branch="$(python3 -c 'import json, os; e=json.load(open(os.environ["GITHUB_EVENT_PATH"], encoding="utf-8")); p=e["pull_request"]; print(p["head"]["ref"] if p["head"]["repo"]["full_name"] == os.environ["GITHUB_REPOSITORY"] else "main")')"
+          fi
+          echo "LORE_BRANCH=$branch" >> "$GITHUB_ENV"
+          echo "Using Lore branch: $branch"
+
+      - name: Fetch assets from Lore
+        env:
+          LORE_CI_USERNAME: ${{ secrets.LORE_CI_USERNAME }}
+          LORE_CI_PASSWORD: ${{ secrets.LORE_CI_PASSWORD }}
+          LORE_AUTH_URL: https://auth.eirexe.moe
+        run: scripts/update-assets.sh "$LORE_BRANCH"
+
+      - name: Install Rust toolchain
+        run: |
+          curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | \
+            sh -s -- -y --profile minimal
+          echo "$HOME/.cargo/bin" >> "$GITHUB_PATH"
+          "$HOME/.cargo/bin/rustup" toolchain install nightly-2026-09-14 --profile minimal
+
+      - name: Install Windows build tooling
+        run: |
+          "$HOME/.cargo/bin/rustup" target add x86_64-pc-windows-msvc --toolchain nightly-2026-09-14
+          "$HOME/.cargo/bin/cargo" install cargo-xwin --locked
+
+      - name: Cache production Rust dependencies and build artifacts
+        uses: Swatinem/rust-cache@6323deb102c322ba6fcbdcafc7e3dddab59af2b6 # v2.9.2
+        with:
+          prefix-key: v2-rust
+          shared-key: linux-nightly-production
+          cache-bin: false
+
+      - name: Install Linux dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install --no-install-recommends -y \
+            clang-19 \
+            libasound2-dev \
+            libudev-dev \
+            libusb-1.0-0-dev \
+            libwayland-dev \
+            libx11-dev \
+            libxfixes3 \
+            libxi6 \
+            libxkbcommon-dev \
+            libxkbcommon-x11-0 \
+            blender \
+            lld-19 \
+            llvm-19 \
+            mesa-vulkan-drivers \
+            mold \
+            pkg-config
+          sudo update-alternatives --install /usr/bin/clang clang /usr/bin/clang-19 100
+          sudo update-alternatives --install /usr/bin/clang++ clang++ /usr/bin/clang++-19 100
+          echo "/usr/lib/llvm-19/bin" >> "$GITHUB_PATH"
+          rm -f "$HOME/.cache/cargo-xwin/clang-cl"
+
+      - name: Install pinned Blender
+        run: |
+          scripts/install-blender.sh "$RUNNER_TEMP/blender"
+          echo "BLENDER=$RUNNER_TEMP/blender/blender" >> "$GITHUB_ENV"
+
+      - name: Preprocess assets
+        run: cargo run --locked --bin process-assets --no-default-features --features debug_features -j 4
+
+      - name: Verify processed battlefield asset
+        run: |
+          python3 - <<'PY'
+          import json
+          import struct
+
+          path = "imported_assets/Default/stages/battlefield/bf2.blend"
+          with open(path, "rb") as asset:
+              header = asset.read(12)
+              if len(header) != 12:
+                  raise SystemExit(f"processed asset is truncated: {path}")
+              magic, version, length = struct.unpack("<4sII", header)
+              if magic != b"glTF" or version != 2 or length != asset.seek(0, 2):
+                  raise SystemExit(f"processed asset is not a valid GLB: {path}")
+              asset.seek(12)
+              json_length, chunk_type = struct.unpack("<II", asset.read(8))
+              if chunk_type != 0x4E4F534A:
+                  raise SystemExit(f"processed asset has no JSON chunk: {path}")
+              document = json.loads(asset.read(json_length))
+          meshes = document.get("meshes", [])
+          if not meshes:
+              raise SystemExit(f"processed asset contains no meshes: {path}")
+          print(f"{path}: {len(meshes)} meshes, {length} bytes")
+          PY
+
+      - name: Build production binary
+        run: cargo build --locked --profile production --no-default-features --features debug_features -j 4
+
+      - name: Build Windows production binary
+        run: |
+          clang --version
+          cargo xwin build --locked --target x86_64-pc-windows-msvc --profile production --no-default-features --features debug_features -j 4 --bin shinespark
+
+      - name: Verify production binary is not Bevy/Rust dynamically linked
+        run: |
+          ! readelf -d target/production/shinespark | grep -E 'libbevy_dylib|libstd-.*\.so'
+
+      - name: Package Linux Steam depot
+        if: github.event_name == 'push' && github.ref == 'refs/heads/master'
+        run: |
+          mkdir -p build/game
+          cp target/production/shinespark build/game/shinespark
+          cp target/x86_64-pc-windows-msvc/production/shinespark.exe build/game/shinespark.exe
+          cp -R imported_assets build/game/imported_assets
+
+      - if: github.event_name == 'push' && github.ref == 'refs/heads/master'
+        uses: CyberAndrii/steam-totp@v1
+        name: Generate Steam TOTP
+        id: steam-totp
+        with:
+          shared_secret: ${{ secrets.STEAM_SHARED_SECRET }}
+
+      - name: Deploy Linux build to Steam
+        if: github.event_name == 'push' && github.ref == 'refs/heads/master'
+        uses: game-ci/steam-deploy@v3
+        with:
+          username: ${{ secrets.STEAM_USERNAME }}
+          password: ${{ secrets.STEAM_PASSWORD }}
+          totp: ${{ steps.steam-totp.outputs.code }}
+          appId: 3409670
+          buildDescription: ${{ github.sha }}
+          rootPath: build
+          depot1Path: game
+          releaseBranch: master
@@ -1,3 +1,17 @@
 /target
 /.jackdaw
-imported_assets
+imported_assets
+/assets/
+
+# Local editor configuration
+**/.vscode/
+
+# Generated and backup assets
+*.blend1
+*_old.glb
+/replay.json
+*.replay.tmp
+
+# Python debugger formatter tests
+__pycache__/
+*.pyc
@@ -0,0 +1 @@
+Álex Román (EIREXE) <eirexe123@gmail.com> <eirexe@eirteam.moe>
@@ -24,8 +24,6 @@ version = "0.24.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d3b7f7f85a7e5f68090000ed7622545829afd484d210358702ae4cb97dd0c320"
 dependencies = [
- "enumn",
- "serde",
 "uuid",
 ]

@@ -96,12 +94,6 @@ version = "2.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "320119579fcad9c21884f5c4861d16174d0e06250625266f50fe6898340abefa"

-[[package]]
-name = "adler32"
-version = "1.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "aae1277d39aeec15cb388266ecc24b11c80469deae6067e17a1a7aa9e5c1f234"
-
 [[package]]
 name = "ahash"
 version = "0.8.12"
@@ -133,9 +125,9 @@ checksum = "683d7910e743518b0e34f1186f92494becacb047c7b6bf616c96772180fef923"

 [[package]]
 name = "alsa"
-version = "0.11.0"
+version = "0.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "812947049edcd670a82cd5c73c3661d2e58468577ba8489de58e1a73c04cbd5d"
+checksum = "7c88dbbce13b232b26250e1e2e6ac18b6a891a646b8148285036ebce260ac5c3"
 dependencies = [
 "alsa-sys",
 "bitflags 2.13.1",
@@ -145,9 +137,9 @@ dependencies = [

 [[package]]
 name = "alsa-sys"
-version = "0.4.0"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ad7569085a265dd3f607ebecce7458eaab2132a84393534c95b18dcbc3f31e04"
+checksum = "db8fee663d06c4e303404ef5f40488a53e062f89ba8bfed81f42325aafad1527"
 dependencies = [
 "libc",
 "pkg-config",
@@ -308,15 +300,6 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "175571dd1d178ced59193a6fc02dde1b972eb0bc56c892cde9beeceac5bf0f6b"

-[[package]]
-name = "ascii-canvas"
-version = "4.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ef1e3e699d84ab1b0911a1010c5c106aa34ae89aeac103be5ce0c3859db1e891"
-dependencies = [
- "term",
-]
-
 [[package]]
 name = "ash"
 version = "0.38.0+1.3.281"
@@ -504,6 +487,26 @@ version = "0.22.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "72b3254f16251a8381aa12e40e3c4d2f0199f8c6508fbecb9d91f575e0fbb8c6"

+[[package]]
+name = "basis-universal"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "555fb05709f4e12fa2f6b93a480facf167eb0ecb2558ba41f610f588e77cbd14"
+dependencies = [
+ "basis-universal-sys",
+ "bitflags 1.3.2",
+ "lazy_static",
+]
+
+[[package]]
+name = "basis-universal-sys"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fd9bde5e9547958fb0e77d79fc7879edcf91d5e0c8e372ef8959916cf35e8506"
+dependencies = [
+ "cc",
+]
+
 [[package]]
 name = "bevy"
 version = "0.19.0"
@@ -596,7 +599,6 @@ dependencies = [
 "bevy_derive",
 "bevy_ecs",
 "bevy_reflect",
- "serde",
 ]

 [[package]]
@@ -632,7 +634,7 @@ dependencies = [
 "downcast-rs 2.0.2",
 "either",
 "petgraph",
- "ron 0.12.2",
+ "ron",
 "serde",
 "smallvec",
 "thiserror 2.0.19",
@@ -729,7 +731,7 @@ dependencies = [
 "futures-util",
 "js-sys",
 "notify-debouncer-full",
- "ron 0.12.2",
+ "ron",
 "serde",
 "stackfuture",
 "thiserror 2.0.19",
@@ -873,21 +875,6 @@ dependencies = [
 "wgpu-types",
 ]

-[[package]]
-name = "bevy_common_assets"
-version = "0.17.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7b9a9509ff29e5db89e1697c047fbbdc55208c8c3d07a494b013cc96814fcddb"
-dependencies = [
- "anyhow",
- "bevy_app",
- "bevy_asset",
- "bevy_reflect",
- "ron 0.11.0",
- "serde",
- "thiserror 2.0.19",
-]
-
 [[package]]
 name = "bevy_core_pipeline"
 version = "0.19.0"
@@ -1275,6 +1262,7 @@ version = "0.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "37bc41f69a0c6ade2e7961602517545b39ab8e42bc8c4a729bd24ffee3bcd904"
 dependencies = [
+ "basis-universal",
 "bevy_app",
 "bevy_asset",
 "bevy_color",
@@ -1311,7 +1299,6 @@ dependencies = [
 "bevy_reflect",
 "derive_more",
 "log",
- "serde",
 "smol_str",
 "thiserror 2.0.19",
 ]
@@ -1527,7 +1514,6 @@ dependencies = [
 "glam 0.32.1",
 "half",
 "hexasphere",
- "serde",
 "thiserror 2.0.19",
 "tracing",
 "wgpu-types",
@@ -2026,7 +2012,6 @@ dependencies = [
 "bevy_window",
 "derive_more",
 "parley",
- "serde",
 "smallvec",
 "swash",
 "taffy",
@@ -2105,14 +2090,6 @@ dependencies = [
 "thread_local",
 ]

-[[package]]
-name = "bevy_wind_waker_shader"
-version = "0.6.0"
-source = "git+https://github.com/lavaeater/bevy_wind_waker_shader.git#1b017c3ef6a4fbdaff115df9ec5ae4954b2fb6ba"
-dependencies = [
- "bevy",
-]
-
 [[package]]
 name = "bevy_window"
 version = "0.19.0"
@@ -2181,7 +2158,7 @@ dependencies = [
 "bevy_transform",
 "bevy_utils",
 "derive_more",
- "ron 0.12.2",
+ "ron",
 "serde",
 "thiserror 2.0.19",
 "uuid",
@@ -2241,32 +2218,6 @@ dependencies = [
 "varinteger",
 ]

-[[package]]
-name = "bitfields"
-version = "3.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ca5a55e8cbc3b75d1f002a3b62261ab67954755f7e7866f079b8aa63a409b549"
-dependencies = [
- "bitfields-impl",
-]
-
-[[package]]
-name = "bitfields-impl"
-version = "3.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "797cb6b6e8d5e8c2ecbb5ef52b7c273596d58ce1ab79ef2a6c38fa8dca0817c5"
-dependencies = [
- "derive_more",
- "getset",
- "proc-macro2",
- "quote",
- "rustversion",
- "strum",
- "strum_macros",
- "syn 2.0.119",
- "thiserror 2.0.19",
-]
-
 [[package]]
 name = "bitflags"
 version = "1.3.2"
@@ -2294,16 +2245,7 @@ dependencies = [
 "cc",
 "cfg-if",
 "constant_time_eq",
- "cpufeatures 0.3.0",
-]
-
-[[package]]
-name = "block-buffer"
-version = "0.10.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3078c7629b62d3f0439517fa394996acacc5cbc91c5a20d8c658e77abd503a71"
-dependencies = [
- "generic-array",
+ "cpufeatures",
 ]

 [[package]]
@@ -2471,16 +2413,6 @@ dependencies = [
 "shlex",
 ]

-[[package]]
-name = "cdt"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b91b872294f63ef586b32aa94141561681aa35ca2d703960cca4f661f4e18184"
-dependencies = [
- "geometry-predicates",
- "thiserror 1.0.69",
-]
-
 [[package]]
 name = "cesu8"
 version = "1.1.0"
@@ -2767,11 +2699,11 @@ dependencies = [

 [[package]]
 name = "coreaudio-rs"
-version = "0.14.2"
+version = "0.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7d5d7dca3ebcf65a035582c9ad4385371a9d9ee6537474d2a278f4e1e475bb58"
+checksum = "1aae284fbaf7d27aa0e292f7677dfbe26503b0d555026f702940805a630eac17"
 dependencies = [
- "bitflags 2.13.1",
+ "bitflags 1.3.2",
 "libc",
 "objc2-audio-toolbox",
 "objc2-core-audio",
@@ -2781,9 +2713,9 @@ dependencies = [

 [[package]]
 name = "cpal"
-version = "0.17.3"
+version = "0.17.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d8942da362c0f0d895d7cac616263f2f9424edc5687364dfd1d25ef7eba506d7"
+checksum = "5b1f9c7312f19fc2fa12fd7acaf38de54e8320ba10d1a02dcbe21038def51ccb"
 dependencies = [
 "alsa",
 "coreaudio-rs",
@@ -2809,15 +2741,6 @@ dependencies = [
 "windows",
 ]

-[[package]]
-name = "cpufeatures"
-version = "0.2.17"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "59ed5838eebb26a2bb2e58f6d5b5316989ae9d08bab10e0e6d103e656d1b0280"
-dependencies = [
- "libc",
-]
-
 [[package]]
 name = "cpufeatures"
 version = "0.3.0"
@@ -2927,16 +2850,6 @@ version = "0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "460fbee9c2c2f33933d720630a6a0bac33ba7053db5344fac858d4b8952d77d5"

-[[package]]
-name = "crypto-common"
-version = "0.1.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "78c8292055d1c1df0cce5d180393dc8cce0abec0a7102adb6c7b1eef6016d60a"
-dependencies = [
- "generic-array",
- "typenum",
-]
-
 [[package]]
 name = "ctrlc"
 version = "3.5.2"
@@ -2989,16 +2902,6 @@ dependencies = [
 "unicode-xid",
 ]

-[[package]]
-name = "digest"
-version = "0.10.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9ed9a281f7bc9b7576e61468ba615a66a5c8cfdff42420a70aa82701a3b1e292"
-dependencies = [
- "block-buffer",
- "crypto-common",
-]
-
 [[package]]
 name = "dispatch"
 version = "0.2.0"
@@ -3070,16 +2973,6 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d8b14ccef22fc6f5a8f4d7d768562a182c04ce9a3b3157b91390b52ddfdf1a76"

-[[package]]
-name = "earcutr"
-version = "0.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "afc28d89ac6cb489f679fcf51aaa62b4667bb0fb73a30f1d4d23949069707c07"
-dependencies = [
- "itertools 0.14.0",
- "num-traits",
-]
-
 [[package]]
 name = "ecolor"
 version = "0.34.3"
@@ -3180,17 +3073,6 @@ dependencies = [
 "syn 1.0.109",
 ]

-[[package]]
-name = "enumn"
-version = "0.1.14"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2f9ed6b3789237c8a0c1c505af1c7eb2c560df6186f01b098c3a1064ea532f38"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn 2.0.119",
-]
-
 [[package]]
 name = "epaint"
 version = "0.34.3"
@@ -3320,16 +3202,6 @@ dependencies = [
 "windows-sys 0.60.2",
 ]

-[[package]]
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-version = "0.2.29"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5c287a33c7f0a620c38e641e7f60827713987b3c0f26e8ddc9462cc69cf75759"
-dependencies = [
- "cfg-if",
- "libc",
-]
-
 [[package]]
 name = "find-msvc-tools"
 version = "0.1.9"
@@ -3349,6 +3221,17 @@ dependencies = [
 "typenum",
 ]

+[[package]]
+name = "fixed_math"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "41c7bdc2634a5ddb634f556681dc3bb8f37a1b0419590b206a103cc89eb9ecce"
+dependencies = [
+ "fixed",
+ "seq-macro",
+ "typenum",
+]
+
 [[package]]
 name = "fixedbitset"
 version = "0.5.7"
@@ -3533,63 +3416,17 @@ dependencies = [
 "thread_local",
 ]

-[[package]]
-name = "game-test"
-version = "0.1.0"
-dependencies = [
- "arrayvec",
- "avian3d",
- "bevy",
- "bevy-inspector-egui",
- "bevy_asset_loader",
- "bevy_common_assets",
- "bevy_egui",
- "bevy_ggrs",
- "bevy_wind_waker_shader",
- "bincode",
- "bitfields",
- "clap",
- "enum_cycling",
- "enum_cycling_derive",
- "fixed",
- "gc-adapter-neo",
- "gltf",
- "jackdaw_runtime",
- "rhai",
- "ron 0.12.2",
- "serde",
- "serde_json",
- "strum",
- "strum_macros",
-]
-
 [[package]]
 name = "gc-adapter-neo"
-version = "1.0.0"
+version = "1.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bd350c081bf33e501e9a5a11732294dfe266683d6b58a366b097146f3e633cb5"
+checksum = "a8d3e10c6c4b928cb559f641765ebaa40f5f099bf51bc0227af7431859f8bd84"
 dependencies = [
 "binread",
 "modular-bitfield",
 "rusb",
 ]

-[[package]]
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-dependencies = [
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- "version_check",
-]
-
-[[package]]
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-checksum = "8dba84198cf199c11b83f1cb9243eaeb70dc50b719d2835ebf34bf2481bca010"
-
 [[package]]
 name = "gethostname"
 version = "1.1.0"
@@ -3636,17 +3473,6 @@ dependencies = [
 "wasm-bindgen",
 ]

-[[package]]
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-version = "0.1.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6cf442baaabe4213ce7d1239afc26c039180b6456da2cededa316ae2c8a77a77"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn 2.0.119",
-]
-
 [[package]]
 name = "ggrs"
 version = "0.13.0"
@@ -3872,7 +3698,6 @@ dependencies = [
 "cfg-if",
 "crunchy",
 "num-traits",
- "serde",
 "zerocopy",
 ]

@@ -4249,89 +4074,6 @@ version = "1.0.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8f42a60cbdf9a97f5d2305f08a87dc4e09308d1276d28c869c684d7777685682"

-[[package]]
-name = "jackdaw_avian_integration"
-version = "0.19.0"
-dependencies = [
- "avian3d",
- "bevy",
- "jackdaw_geometry",
- "jackdaw_scene_types",
-]
-
-[[package]]
-name = "jackdaw_bsn"
-version = "0.19.0"
-dependencies = [
- "bevy",
- "lalrpop",
- "lalrpop-util",
- "log",
- "nom",
- "pathdiff",
- "thiserror 2.0.19",
-]
-
-[[package]]
-name = "jackdaw_geometry"
-version = "0.19.0"
-dependencies = [
- "bevy",
- "bitflags 2.13.1",
- "cdt",
- "earcutr",
- "glam 0.32.1",
- "serde",
- "slotmap",
-]
-
-[[package]]
-name = "jackdaw_runtime"
-version = "0.19.0"
-dependencies = [
- "avian3d",
- "bevy",
- "jackdaw_avian_integration",
- "jackdaw_bsn",
- "jackdaw_geometry",
- "jackdaw_scene_types",
- "jackdaw_schema",
- "jackdaw_ui",
- "serde",
- "serde_json",
- "thiserror 2.0.19",
-]
-
-[[package]]
-name = "jackdaw_scene_types"
-version = "0.19.0"
-dependencies = [
- "bevy",
- "glam 0.32.1",
- "jackdaw_geometry",
- "rand 0.9.5",
- "serde",
- "serde_json",
-]
-
-[[package]]
-name = "jackdaw_schema"
-version = "0.19.0"
-dependencies = [
- "bevy",
- "jackdaw_scene_types",
- "serde",
- "serde_json",
-]
-
-[[package]]
-name = "jackdaw_ui"
-version = "0.19.0"
-dependencies = [
- "bevy",
- "bevy_scene",
-]
-
 [[package]]
 name = "jni"
 version = "0.21.1"
@@ -4427,15 +4169,6 @@ dependencies = [
 "wasm-bindgen",
 ]

-[[package]]
-name = "keccak"
-version = "0.1.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cb26cec98cce3a3d96cbb7bced3c4b16e3d13f27ec56dbd62cbc8f39cfb9d653"
-dependencies = [
- "cpufeatures 0.2.17",
-]
-
 [[package]]
 name = "khronos-egl"
 version = "6.0.0"
@@ -4494,37 +4227,6 @@ dependencies = [
 "smallvec",
 ]

-[[package]]
-name = "lalrpop"
-version = "0.23.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "98a80a963123205c7157323c99611bc4abb65dcbd62ef46dc4bac74a3941bc75"
-dependencies = [
- "ascii-canvas",
- "bit-set",
- "ena",
- "itertools 0.14.0",
- "lalrpop-util",
- "petgraph",
- "pico-args",
- "regex",
- "regex-syntax",
- "sha3",
- "string_cache",
- "term",
- "unicode-xid",
- "walkdir",
-]
-
-[[package]]
-name = "lalrpop-util"
-version = "0.23.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "884f3e747ed2dcee867cda1b0c31a048f9e20de2d916a248949319921a2e666e"
-dependencies = [
- "regex-automata",
-]
-
 [[package]]
 name = "lazy_static"
 version = "1.5.0"
@@ -4548,26 +4250,6 @@ version = "0.2.189"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3eaf3ede3fee6db1a4c2ee091bf8a8b4dccdc6d17f656fb07896ee72867612f2"

-[[package]]
-name = "libflate"
-version = "1.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5ff4ae71b685bbad2f2f391fe74f6b7659a34871c08b210fdc039e43bee07d18"
-dependencies = [
- "adler32",
- "crc32fast",
- "libflate_lz77",
-]
-
-[[package]]
-name = "libflate_lz77"
-version = "1.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a52d3a8bfc85f250440e4424db7d857e241a3aebbbe301f3eb606ab15c39acbf"
-dependencies = [
- "rle-decode-fast",
-]
-
 [[package]]
 name = "libloading"
 version = "0.8.9"
@@ -4608,15 +4290,13 @@ dependencies = [

 [[package]]
 name = "libusb1-sys"
-version = "0.4.4"
+version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "be241693102a24766d0b8526c8988771edac2842630d7e730f8e9fbc014f3703"
+checksum = "da050ade7ac4ff1ba5379af847a10a10a8e284181e060105bf8d86960ce9ce0f"
 dependencies = [
 "cc",
 "libc",
- "libflate",
 "pkg-config",
- "tar",
 "vcpkg",
 ]

@@ -4831,12 +4511,6 @@ dependencies = [
 "jni-sys 0.3.1",
 ]

-[[package]]
-name = "new_debug_unreachable"
-version = "1.0.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "650eef8c711430f1a879fdd01d4745a7deea475becfb90269c06775983bbf086"
-
 [[package]]
 name = "nix"
 version = "0.31.3"
@@ -4855,15 +4529,6 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2bf50223579dc7cdcfb3bfcacf7069ff68243f8c363f62ffa99cf000a6b9c451"

-[[package]]
-name = "nom"
-version = "8.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "df9761775871bdef83bee530e60050f7e54b1105350d6884eb0fb4f46c2f9405"
-dependencies = [
- "memchr",
-]
-
 [[package]]
 name = "nonmax"
 version = "0.5.5"
@@ -5607,12 +5272,6 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1e91099d4268b0e11973f036e885d652fb0b21fedcf69738c627f94db6a44f42"

-[[package]]
-name = "pathdiff"
-version = "0.2.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "df94ce210e5bc13cb6651479fa48d14f601d9858cfe0467f43ae157023b938d3"
-
 [[package]]
 name = "peniko"
 version = "0.6.1"
@@ -5645,21 +5304,6 @@ dependencies = [
 "serde_derive",
 ]

-[[package]]
-name = "phf_shared"
-version = "0.13.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e57fef6bc5981e38c2ce2d63bfa546861309f875b8a75f092d1d54ae2d64f266"
-dependencies = [
- "siphasher",
-]
-
-[[package]]
-name = "pico-args"
-version = "0.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5be167a7af36ee22fe3115051bc51f6e6c7054c9348e28deb4f49bd6f705a315"
-
 [[package]]
 name = "pin-project"
 version = "1.1.13"
@@ -5817,12 +5461,6 @@ dependencies = [
 "zerocopy",
 ]

-[[package]]
-name = "precomputed-hash"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "925383efa346730478fb4838dbe9137d2a47675ad789c546d150a6e1dd4ab31c"
-
 [[package]]
 name = "presser"
 version = "0.3.1"
@@ -5930,20 +5568,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "22f6172bdec972074665ed81ed53b71da00bfc44b65a753cfde883ec4c702a1a"
 dependencies = [
 "libc",
- "rand_chacha 0.3.1",
+ "rand_chacha",
 "rand_core 0.6.4",
 ]

-[[package]]
-name = "rand"
-version = "0.9.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b9ef1d0d795eb7d84685bca4f72f3649f064e6641543d3a8c415898726a57b41"
-dependencies = [
- "rand_chacha 0.9.0",
- "rand_core 0.9.5",
-]
-
 [[package]]
 name = "rand"
 version = "0.10.2"
@@ -5964,16 +5592,6 @@ dependencies = [
 "rand_core 0.6.4",
 ]

-[[package]]
-name = "rand_chacha"
-version = "0.9.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d3022b5f1df60f26e1ffddd6c66e8aa15de382ae63b3a0c1bfc0e4d3e3f325cb"
-dependencies = [
- "ppv-lite86",
- "rand_core 0.9.5",
-]
-
 [[package]]
 name = "rand_core"
 version = "0.6.4"
@@ -5983,15 +5601,6 @@ dependencies = [
 "getrandom 0.2.17",
 ]

-[[package]]
-name = "rand_core"
-version = "0.9.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "76afc826de14238e6e8c374ddcc1fa19e374fd8dd986b0d2af0d02377261d83c"
-dependencies = [
- "getrandom 0.3.4",
-]
-
 [[package]]
 name = "rand_core"
 version = "0.10.1"
@@ -6193,12 +5802,6 @@ dependencies = [
 "syn 2.0.119",
 ]

-[[package]]
-name = "rle-decode-fast"
-version = "1.0.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3582f63211428f83597b51b2ddb88e2a91a9d52d12831f9d08f5e624e8977422"
-
 [[package]]
 name = "robust"
 version = "1.2.0"
@@ -6219,19 +5822,6 @@ dependencies = [
 "tracing",
 ]

-[[package]]
-name = "ron"
-version = "0.11.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "db09040cc89e461f1a265139777a2bde7f8d8c67c4936f700c63ce3e2904d468"
-dependencies = [
- "base64 0.22.1",
- "bitflags 2.13.1",
- "serde",
- "serde_derive",
- "unicode-ident",
-]
-
 [[package]]
 name = "ron"
 version = "0.12.2"
@@ -6246,6 +5836,29 @@ dependencies = [
 "unicode-ident",
 ]

+[[package]]
+name = "ron_asset_derive"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fdb312bdc83344894927694f5549e55c358a34d94c0d2262f241015413cb7cbb"
+dependencies = [
+ "quote",
+ "syn 2.0.119",
+]
+
+[[package]]
+name = "ron_asset_manager"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f08cf385fe993fb4002dcb90e39e0d081c49db07a5a96a40d631d88080602df3"
+dependencies = [
+ "bevy",
+ "ron",
+ "ron_asset_derive",
+ "serde",
+ "thiserror 1.0.69",
+]
+
 [[package]]
 name = "rstar"
 version = "0.12.2"
@@ -6259,9 +5872,9 @@ dependencies = [

 [[package]]
 name = "rusb"
-version = "0.6.5"
+version = "0.9.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f6f32cd45962594f9f8cd4547b5757132715600e2c8840aa9ccd3d1a9ed6fdc6"
+checksum = "ab9f9ff05b63a786553a4c02943b74b34a988448671001e9a27e2f0565cc05a4"
 dependencies = [
 "libc",
 "libusb1-sys",
@@ -6390,6 +6003,12 @@ version = "0.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cd0b0ec5f1c1ca621c432a25813d8d60c88abe6d3e08a3eb9cf37d97a0fe3d73"

+[[package]]
+name = "seq-macro"
+version = "0.3.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1bc711410fbe7399f390ca1c3b60ad0f53f80e95c5eb935e52268a0e2cd49acc"
+
 [[package]]
 name = "serde"
 version = "1.0.229"
@@ -6442,16 +6061,6 @@ dependencies = [
 "serde_core",
 ]

-[[package]]
-name = "sha3"
-version = "0.10.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "77fd7028345d415a4034cf8777cd4f8ab1851274233b45f84e3d955502d93874"
-dependencies = [
- "digest",
- "keccak",
-]
-
 [[package]]
 name = "sharded-slab"
 version = "0.1.7"
@@ -6461,6 +6070,36 @@ dependencies = [
 "lazy_static",
 ]

+[[package]]
+name = "shinespark"
+version = "0.1.0"
+dependencies = [
+ "arrayvec",
+ "avian3d",
+ "bevy",
+ "bevy-inspector-egui",
+ "bevy_asset_loader",
+ "bevy_egui",
+ "bevy_ggrs",
+ "bincode",
+ "blake3",
+ "clap",
+ "enum_cycling",
+ "enum_cycling_derive",
+ "fixed",
+ "fixed_math",
+ "gc-adapter-neo",
+ "gltf",
+ "rhai",
+ "ron",
+ "ron_asset_manager",
+ "serde",
+ "serde_json",
+ "strum",
+ "strum_macros",
+ "thiserror 2.0.19",
+]
+
 [[package]]
 name = "shlex"
 version = "2.0.1"
@@ -6502,12 +6141,6 @@ version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e3a9fe34e3e7a50316060351f37187a3f546bce95496156754b601a5fa71b76e"

-[[package]]
-name = "siphasher"
-version = "1.0.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8ee5873ec9cce0195efcb7a4e9507a04cd49aec9c83d0389df45b1ef7ba2e649"
-
 [[package]]
 name = "skrifa"
 version = "0.40.0"
@@ -6558,9 +6191,6 @@ name = "smallvec"
 version = "1.15.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8ed6a63f02c8539c91a8685a86f4099661ba3da017932f6ebbea6de3f0fa7c90"
-dependencies = [
- "serde",
-]

 [[package]]
 name = "smartstring"
@@ -6702,18 +6332,6 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6637bab7722d379c8b41ba849228d680cc12d0a45ba1fa2b48f2a30577a06731"

-[[package]]
-name = "string_cache"
-version = "0.9.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a18596f8c785a729f2819c0f6a7eae6ebeebdfffbfe4214ae6b087f690e31901"
-dependencies = [
- "new_debug_unreachable",
- "parking_lot",
- "phf_shared",
- "precomputed-hash",
-]
-
 [[package]]
 name = "strsim"
 version = "0.11.1"
@@ -6834,26 +6452,6 @@ dependencies = [
 "slotmap",
 ]

-[[package]]
-name = "tar"
-version = "0.4.46"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3f6221d9a6003c78398e3b239969f352578258df48c8eb051caadae0015bc840"
-dependencies = [
- "filetime",
- "libc",
- "xattr",
-]
-
-[[package]]
-name = "term"
-version = "1.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d8c27177b12a6399ffc08b98f76f7c9a1f4fe9fc967c784c5a071fa8d93cf7e1"
-dependencies = [
- "windows-sys 0.61.2",
-]
-
 [[package]]
 name = "termcolor"
 version = "1.4.1"
@@ -8259,16 +7857,6 @@ version = "0.13.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ea6fc2961e4ef194dcbfe56bb845534d0dc8098940c7e5c012a258bfec6701bd"

-[[package]]
-name = "xattr"
-version = "1.6.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "32e45ad4206f6d2479085147f02bc2ef834ac85886624a23575ae137c8aa8156"
-dependencies = [
- "libc",
- "rustix 1.1.4",
-]
-
 [[package]]
 name = "xcursor"
 version = "0.3.11"
@@ -1,25 +1,23 @@
 [package]
-name = "game-test"
+name = "shinespark"
 version = "0.1.0"
 edition = "2024"
 authors = [""]

-# A normal Bevy project. jackdaw builds its own editor artifacts in
-# .jackdaw/ and never changes this manifest; `cargo run` works with or
-# without the editor installed.
-
-# Stand this project on its own even when it is created inside another
-# cargo workspace, which would otherwise adopt it and refuse to build
-# ("current package believes it's in a workspace when it's not").
-# Delete this to make it a member of the surrounding workspace instead.
 [workspace]

+[features]
+default = ["development", "debug_features"]
+development = ["bevy/dynamic_linking", "bevy/file_watcher"]
+debug_features = ["bevy/free_camera"]
+
 [dependencies]
-bevy = { version = "0.19", features = ["asset_processor", "dynamic_linking", "free_camera", "file_watcher", "bevy_settings"] }
+bevy = { version = "0.19", features = ["asset_processor", "basis-universal", "compressed_image_saver", "bevy_settings"] }
 # Loads the scenes you author in the editor (assets/*.bsn) and builds
 # physics colliders from them. An ordinary dependency; remove it if you
 # stop using authored scenes.
-jackdaw_runtime = { version = "0.19", features = ["physics"], path="../jackdaw/crates/jackdaw_runtime" }
+blake3 = { version = "1.8.5", features = [ "pure" ] }
+thiserror = "2"
 avian3d = "0.7"
 arrayvec = "0.7.8"
 bevy-inspector-egui = "0.37.0"
@@ -30,19 +28,24 @@ serde_json = "1.0.145"
 bincode = "1.3.3"
 gltf = "1.4.1"
 ron = "0.12.0"
-bitfields = "3.0.0"
 clap = { version = "4.6.6", features = ["derive"] }
-bevy_wind_waker_shader = { git = "https://github.com/lavaeater/bevy_wind_waker_shader.git" }
 fixed = { version = "1.31.0", features = ["serde", "serde-str"] }
 strum = "0.28.0"
 strum_macros = "0.28.0"
-bevy_common_assets = { version = "0.17.0", features = ["ron"] }
 bevy_asset_loader = "0.27.0"
-gc-adapter-neo = { version = "1.0.0", features = ["libusb"] }
+ron_asset_manager = "0.9.0"
+gc-adapter-neo = { version = "1.1.1", features = ["libusb"] }
 rhai = "1.26.0"
 enum_cycling = "0.2.1"
 enum_cycling_derive = "0.2.1"
+fixed_math = "0.4.1"

 # Enable a large amount of optimization in the dev profile for dependencies.
 [profile.dev.package."*"]
 opt-level = 3
+
+[profile.production]
+inherits = "release"
+lto = "thin"
+codegen-units = 1
+strip = "symbols"
@@ -1,12 +1,50 @@
-# Game Test
+# Shinespark

-A Bevy game, editable in the [jackdaw](https://github.com/jbuehler23/jackdaw) editor.
+Fancy heavily advanced platform fighting game

- `cargo run` plays the game standalone; no editor required.
- Open the folder in jackdaw to author scenes, then hit Play. The
-  editor builds its own artifacts into `.jackdaw/` (gitignored) and
-  never modifies your manifest or lockfile.
- Gameplay lives in `src/lib.rs` (`GamePlugin`); authored scenes live
-  in `assets/*.bsn`.
- Components you derive `Reflect` on appear in the editor's inspector
-  automatically; no registration code is needed.
+## Debugging fixed-point values with lldb
+
+If using CodeLLDB:
+```json
+"preRunCommands": [
+    "command script import ${workspaceFolder}/tools/lldb_fixed.py"
+]
+```
+
+## Direct P2P Debugging
+
+```text
+# Process 1 owns player 0 and listens on 7000.
+cargo run -- --debug-match --players 2 --local-port 7000 \
+  --net-player 0=local --net-player 1=127.0.0.1:7001
+
+# Process 2 owns player 1 and listens on 7001.
+cargo run -- --debug-match --players 2 --local-port 7001 \
+  --net-player 0=127.0.0.1:7000 --net-player 1=local
+```
+
+## Production Build
+
+```sh
+cargo run --locked \
+  --bin process-assets --no-default-features --features debug_features
+cargo build --locked \
+  --profile production --no-default-features --features debug_features
+```
+
+## Assets
+
+Game assets are managed in Lore rather than Git. Install the Lore CLI, then
+bootstrap or update the local checkout with:
+
+```sh
+scripts/install-lore.sh
+scripts/update-assets.sh
+```
+
+The default Lore branch is `main`; pass another branch explicitly when testing
+coordinated code and asset changes:
+
+```sh
+scripts/update-assets.sh my-feature-branch
+```
@@ -1,12 +0,0 @@
-frame(3);
-hitbox(0,
-    "Foot.L",
-    damage("5.0"),
-    vec3("0.0", "0.0", "0.0"),
-    fg32("20.0"),
-    angle_sakurai(),
-    knockback_normal(),
-    knockback("10.0"),
-    fg32("1.0")
-);
-frame(6);
@@ -1,61 +0,0 @@
-(
-    id: TestFighter,
-    model_path: "fighters/test/test-fighter-normal.glb",
-    baked_animation_path: "fighters/test/test.fighterbake",
-    attributes: (
-        base_walk_accel: "0.1",
-        stick_walk_accel: "0.16",
-        max_walk_vel: "0.7",
-        ground_friction: "0.09",
-        dash_acceleration_duration: 13,
-        dash_duration: 24,
-        base_dash_accel: "0.02",
-        stick_dash_accel: "0.065",
-        max_dash_vel: "1.1",
-        short_hop_vertical_velocity: "1.05",
-        full_jump_vertical_velocity: "1.6",
-        jump_horizontal_velocity: "0.7",
-        air_jump_horizontal_velocity: "0.5",
-        air_jump_multiplier: "1.0",
-        dash_initial_velocity: "1.4",
-        terminal_velocity: "1.3",
-        gravity: "0.064",
-        jumpsquat_duration: 5,
-        landing_iasa: 4,
-        landing_duration: 30,
-
-        max_air_horizontal_velocity: "1.35",
-        air_acceleration_base: "0.19",
-        air_acceleration_stick: "0.09",
-        air_friction: "0.05",
-
-        air_dodge_duration: 49,
-        air_dodge_velocity: "2.790",
-        air_dodge_decay: "0.9"
-    ),
-    camera: (
-        vertical_origin_offset: "8.0",
-        forward_extent: "25.5",
-        backward_extent: "8.5",
-        upward_extent: "15.0",
-        downward_extent: "5.0",
-        visibility_radius: "5.0",
-    ),
-    animations: {
-        Wait: "PlyPurin5K_Share_ACTION_Wait",
-        Walk: "PlyPurin5K_Share_ACTION_WalkFast",
-        Run: "PlyPurin5K_Share_ACTION_Run",
-        Dash: "PlyPurin5K_Share_ACTION_Dash",
-        JumpSquat: "PlyPurin5K_Share_ACTION_Landing",
-        JumpForward: "PlyPurin5K_Share_ACTION_JumpF",
-        JumpBack: "PlyPurin5K_Share_ACTION_JumpB",
-        Landing: "PlyPurin5K_Share_ACTION_Landing",
-        AirDodge: "PlyPurin5K_Share_ACTION_EscapeAir",
-        DoubleJump: "PlyPurin5K_Share_ACTION_JumpAerialF1",
-        Fall: "PlyPurin5K_Share_ACTION_Fall",
-        Turn: "PlyPurin5K_Share_ACTION_Turn",
-    },
-    attack_scripts: {
-        NAir: "fighters/test/scripts/fair.attack.rhai"
-    }
-)
@@ -1,3 +0,0 @@
-(
-    manifest_path: "fighters/test/test.fighter.ron",
-)
@@ -1,47 +0,0 @@
-(
-    button_styles: {
-        MainMenu: (
-            focus_outline_width_px: 4,
-            focus_outline_offset_px: 2,
-            focus_outline_color: Srgba((red: 1.0, green: 1.0, blue: 0.0, alpha: 1.0)),
-            normal: (
-                background_color: Srgba((red: 1.0, green: 0.0, blue: 0.0, alpha: 1.0)),
-                border_color: Srgba((red: 1.0, green: 0.0, blue: 0.0, alpha: 1.0)),
-                text_color: Srgba((red: 1.0, green: 0.0, blue: 0.0, alpha: 1.0)),
-                box_shadow: (),
-            ),
-            press: (
-                background_color: Srgba((red: 1.0, green: 0.0, blue: 0.0, alpha: 1.0)),
-                border_color: Srgba((red: 1.0, green: 0.0, blue: 0.0, alpha: 1.0)),
-                text_color: Srgba((red: 1.0, green: 0.0, blue: 0.0, alpha: 1.0)),
-                box_shadow: (),
-            ),
-            hover: (
-                background_color: Srgba((red: 0.0, green: 1.0, blue: 0.0, alpha: 1.0)),
-                border_color: Srgba((red: 1.0, green: 0.0, blue: 0.0, alpha: 1.0)),
-                text_color: Srgba((red: 1.0, green: 0.0, blue: 0.0, alpha: 1.0)),
-                box_shadow: (),
-            )
-        ),
-        CharacterSelectCharacter: (
-            focus_outline_width_px: 4,
-            focus_outline_offset_px: 2,
-            focus_outline_color: Srgba((red: 1.0, green: 1.0, blue: 0.0, alpha: 1.0)),
-            normal: (
-                background_color: Srgba((red: 1.0, green: 0.0, blue: 0.0, alpha: 1.0)),
-                text_color: Srgba((red: 1.0, green: 0.0, blue: 0.0, alpha: 1.0)),
-                box_shadow: (),
-            ),
-            press: (
-                background_color: Srgba((red: 1.0, green: 0.0, blue: 0.0, alpha: 1.0)),
-                text_color: Srgba((red: 1.0, green: 0.0, blue: 0.0, alpha: 1.0)),
-                box_shadow: (),
-            ),
-            hover: (
-                background_color: Srgba((red: 0.0, green: 1.0, blue: 0.0, alpha: 1.0)),
-                text_color: Srgba((red: 1.0, green: 0.0, blue: 0.0, alpha: 1.0)),
-                box_shadow: (),
-            )
-        )
-    }
-)
@@ -1,23 +0,0 @@
-(   
-    input_common: (
-        stick_deadzone: "0.275",
-        trigger_deadzone: "0.3",
-        smash_input_reset_axis_threshold: "0.25",
-        smash_input_axis_threshold: "0.8",
-        run_stick_threshold: "0.625",
-        smash_input_frame_threshold: 2,
-        input_buffer_size: 5
-    
-    ),
-    fighter_common: (
-        walk_speed_ease: "0.5",
-        ground_max_horizontal_velocity: "3.0",
-        ground_friction_over_walk_speed_multiplier: "2.0"
-    ),
-    stage_manifest_paths: [
-        "stages/test.stage.ron"
-    ],
-    fighter_manifest_paths: [
-        "fighters/test/test.fighter.ron"
-    ]
-)
@@ -1,84 +0,0 @@
-(
-    id: TestStage,
-    model_path: "stages/battlefield.glb#Scene0",
-    camera: (
-        left: -75.0,
-        right: 75.0,
-        bottom: -30.0,
-        top: 70.0,
-        origin: (0.0, 15.0),
-        vertical_fov_degrees: 30.0,
-        min_depth: 150.0,
-        max_depth: 400.0,
-        subject_scale: 1.0,
-        tracking_smoothness: 3.0,
-        vertical_tilt_degrees: 0.0,
-        horizontal_pan_coefficient: 0.0,
-        vertical_pan_coefficient: 0.0,
-        max_horizontal_pan_degrees: 17.5,
-        max_upward_pan_degrees: 5.0,
-        max_downward_pan_degrees: 7.0,
-        max_downward_expansion: 40.0,
-    ),
-    polygons: [
-        (
-            poly_type: Platform,
-            lines: [
-                (
-                    (x: "-59.5", y: "23.45"),
-                    Floor
-                ),
-                (
-                    (x: "-28.0", y: "23.45"),
-                    Floor
-                )
-            ]
-        ),
-        (
-            poly_type: Platform,
-            lines: [
-                (
-                    (x: "28.0", y: "23.45"),
-                    Floor
-                ),
-                (
-                    (x: "59.5", y: "23.45"),
-                    Floor
-                )
-            ]
-        ),
-        (
-            poly_type: Closed,
-            lines: [
-                (
-                    (x: "-56", y: "-200.0"),
-                    Wall
-                ),
-                (
-                    (x: "-56.0", y: "-3.5"),
-                    Floor,
-                ),
-                (
-                    (x: "-39.2", y: "0.0"),
-                    Floor,
-                ),
-                (
-                    (x: "0.0", y: "0.0"),
-                    Floor
-                ),
-                (
-                    (x: "39.2", y: "0.0"),
-                    Floor
-                ),
-                (
-                    (x: "56.0", y: "-3.5"),
-                    Wall
-                ),
-                (
-                    (x: "56", y: "-200.0"),
-                    Wall
-                ),
-            ]
-        )
-    ]
-)
@@ -0,0 +1,8 @@
+#!/bin/bash
+
+FIRST="cargo run -- --debug-match --players 2 --local-port 7000 \
+  --net-player 0=local --net-player 1=127.0.0.1:7001"
+SECOND="cargo run -- --debug-match --players 2 --local-port 7001 \
+--net-player 0=127.0.0.1:7000 --net-player 1=local"
+
+(trap 'kill 0' SIGINT; $FIRST & $SECOND)
@@ -1,2 +1,2 @@
 [toolchain]
-channel = "nightly"
+channel = "nightly-2026-09-14"
@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+version="5.2.2"
+sha256="84098912789dc450e95697c4184fb8a90acbe5111c2ba4aede3fecb57806a168"
+install_dir="${1:-${BLENDER_INSTALL_DIR:-${HOME}/.local/blender-${version}}}"
+
+if [[ "$(uname -s)" != Linux || "$(uname -m)" != x86_64 ]]; then
+    echo "error: this installer currently supports Linux x86_64 only" >&2
+    exit 1
+fi
+
+if [[ -x "$install_dir/blender" ]]; then
+    "$install_dir/blender" --version | head -n 1
+    exit 0
+fi
+
+mkdir -p "$(dirname "$install_dir")"
+tmp_dir="$(mktemp -d)"
+trap 'rm -rf "$tmp_dir"' EXIT
+
+archive="blender-${version}-linux-x64.tar.xz"
+url="https://download.blender.org/release/Blender5.2/${archive}"
+
+curl --fail --location --silent --show-error --output "$tmp_dir/$archive" "$url"
+printf '%s  %s\n' "$sha256" "$tmp_dir/$archive" | sha256sum --check --status
+tar --extract --xz --file "$tmp_dir/$archive" --directory "$tmp_dir"
+mv "$tmp_dir/blender-${version}-linux-x64" "$install_dir"
+
+"$install_dir/blender" --version | head -n 1
@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+version="v0.10.0"
+sha256="0d1633b71e44081c6a3ca57ad5be3df7a9563698827638838939c3c832e87351"
+install_dir="${1:-${LORE_INSTALL_DIR:-${HOME}/.local/bin}}"
+
+if [[ "$(uname -s)" != Linux || "$(uname -m)" != x86_64 ]]; then
+    echo "error: this installer currently supports Linux x86_64 only" >&2
+    exit 1
+fi
+
+mkdir -p "$install_dir"
+tmp_dir="$(mktemp -d)"
+trap 'rm -rf "$tmp_dir"' EXIT
+
+archive="lore-${version}-x86_64-unknown-linux-gnu.tar.gz"
+url="https://github.com/EpicGames/lore/releases/download/${version}/${archive}"
+
+curl --fail --location --silent --show-error --output "$tmp_dir/$archive" "$url"
+printf '%s  %s\n' "$sha256" "$tmp_dir/$archive" | sha256sum --check --status
+tar --extract --gzip --file "$tmp_dir/$archive" --directory "$tmp_dir"
+
+binary="$(find "$tmp_dir" -type f -name lore -print -quit)"
+if [[ -z "$binary" ]]; then
+    echo "error: Lore archive did not contain a lore binary" >&2
+    exit 1
+fi
+
+install -m 0755 "$binary" "$install_dir/lore"
+"$install_dir/lore" --version
@@ -0,0 +1,111 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+readonly lore_url="${LORE_REPOSITORY_URL:-lore://lore.eirexe.moe/shinespark}"
+readonly default_branch="${LORE_DEFAULT_BRANCH:-main}"
+readonly assets_dir="${LORE_ASSETS_DIR:-assets}"
+branch="${1:-${LORE_BRANCH:-$default_branch}}"
+
+case "$branch" in
+    ""|*[!A-Za-z0-9._/-]*)
+        echo "error: invalid Lore branch name: $branch" >&2
+        exit 2
+        ;;
+esac
+
+if [[ -n "${LORE_IDENTITY_TOKEN:-}" ]]; then
+    lore_args=(--identity-token "$LORE_IDENTITY_TOKEN")
+elif [[ -n "${LORE_CI_USERNAME:-}" || -n "${LORE_CI_PASSWORD:-}" ]]; then
+    if [[ -z "${LORE_CI_USERNAME:-}" || -z "${LORE_CI_PASSWORD:-}" ]]; then
+        echo "error: LORE_CI_USERNAME and LORE_CI_PASSWORD must be provided together" >&2
+        exit 2
+    fi
+    : "${LORE_AUTH_URL:=https://auth.eirexe.moe}"
+    export LORE_AUTH_URL
+    token="$(python3 - <<'PY'
+import json
+import os
+import sys
+import urllib.error
+import urllib.request
+
+request = urllib.request.Request(
+    os.environ["LORE_AUTH_URL"].rstrip("/") + "/auth/login",
+    data=json.dumps({
+        "username": os.environ["LORE_CI_USERNAME"],
+        "password": os.environ["LORE_CI_PASSWORD"],
+    }).encode(),
+    headers={"Content-Type": "application/json"},
+    method="POST",
+)
+try:
+    with urllib.request.urlopen(request) as response:
+        payload = json.load(response)
+except urllib.error.HTTPError as error:
+    print(f"Lore authentication failed with HTTP {error.code}", file=sys.stderr)
+    sys.exit(1)
+
+token = payload.get("token")
+if not isinstance(token, str) or not token:
+    print("Lore authentication response did not contain a token", file=sys.stderr)
+    sys.exit(1)
+print(token)
+PY
+    )"
+    if [[ -n "${GITHUB_ENV:-}" ]]; then
+        echo "::add-mask::$token"
+    fi
+    lore_args=(--identity-token "$token")
+else
+    lore_args=()
+fi
+
+if [[ -e "$assets_dir" && ! -d "$assets_dir" ]]; then
+    echo "error: $assets_dir exists but is not a directory" >&2
+    exit 1
+fi
+
+if [[ -d "$assets_dir/.lore" ]]; then
+    if ! lore "${lore_args[@]}" --repository "$assets_dir" repository info >/dev/null; then
+        echo "error: $assets_dir is not a usable Lore checkout" >&2
+        exit 1
+    fi
+    if ! lore "${lore_args[@]}" --repository "$assets_dir" branch list --no-pager \
+        | grep -Fqx "  $branch"; then
+        if [[ "$branch" != "$default_branch" ]]; then
+            echo "warning: Lore branch does not exist: $branch; using $default_branch" >&2
+            branch="$default_branch"
+        else
+            echo "error: Lore branch does not exist: $branch" >&2
+            exit 1
+        fi
+    fi
+    lore "${lore_args[@]}" --repository "$assets_dir" sync "$branch@LATEST"
+    exit 0
+fi
+
+if [[ -d "$assets_dir" && -n "$(find "$assets_dir" -mindepth 1 -maxdepth 1 -print -quit)" ]]; then
+    echo "error: refusing to overwrite non-Lore directory: $assets_dir" >&2
+    exit 1
+fi
+
+metadata_dir="$(mktemp -d)"
+trap 'rm -rf "$metadata_dir"' EXIT
+lore "${lore_args[@]}" --non-interactive clone --bare "$lore_url" "$metadata_dir"
+
+if ! lore "${lore_args[@]}" --repository "$metadata_dir" branch list --no-pager \
+    | grep -Fqx "  $branch"; then
+    if [[ "$branch" != "$default_branch" ]]; then
+        echo "warning: Lore branch does not exist: $branch; using $default_branch" >&2
+        branch="$default_branch"
+    else
+        echo "error: Lore branch does not exist: $branch" >&2
+        echo "available branches:" >&2
+        lore "${lore_args[@]}" --repository "$metadata_dir" branch list --no-pager >&2
+        exit 1
+    fi
+fi
+
+rm -rf "$assets_dir"
+lore "${lore_args[@]}" --non-interactive clone --branch "$branch" "$lore_url" "$assets_dir"
+lore "${lore_args[@]}" --repository "$assets_dir" status --revision-only --no-pager
@@ -1,10 +1,13 @@
 use bevy::prelude::*;
 use clap::Parser;
+use std::net::SocketAddr;
 use std::path::PathBuf;

 #[derive(Parser, Debug, Clone, Resource)]
 #[command(version, about, long_about = None)]
 pub struct Args {
+    #[clap(long)]
+    pub debug_match: bool,
    #[clap(long)]
    pub synctest: bool,
    #[clap(long, default_value_t = 2)]
@@ -13,6 +16,12 @@ pub struct Args {
    pub check_distance: usize,
    #[clap(long, default_value_t = 1)]
    pub players: usize,
+    /// UDP port to bind for a direct peer-to-peer session.
+    #[clap(long, default_value_t = 6969)]
+    pub local_port: u16,
+    /// Player ownership declarations in the form HANDLE=local or HANDLE=ADDRESS.
+    #[clap(long = "net-player", value_name = "HANDLE=local|ADDRESS")]
+    pub net_players: Vec<String>,
    /// Record a replay to this path.
    #[clap(long, conflicts_with = "play_replay")]
    pub record_replay: Option<PathBuf>,
@@ -23,3 +32,41 @@ pub struct Args {
    #[clap(long, value_enum, default_value_t = crate::replay::ReplayFormat::Binary)]
    pub replay_format: crate::replay::ReplayFormat,
 }
+
+pub fn parse_socket_addr(value: &str) -> Result<SocketAddr, String> {
+    let address = value
+        .parse::<SocketAddr>()
+        .map_err(|_| format!("invalid socket address: {value}"))?;
+    if address.port() == 0 {
+        return Err(format!("socket address must use a nonzero port: {value}"));
+    }
+    Ok(address)
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn parses_network_options() {
+        let args = Args::try_parse_from([
+            "game",
+            "--local-port",
+            "7000",
+            "--net-player",
+            "0=local",
+            "--net-player",
+            "1=127.0.0.1:7001",
+        ])
+        .unwrap();
+
+        assert_eq!(args.local_port, 7000);
+        assert_eq!(args.net_players, ["0=local", "1=127.0.0.1:7001"]);
+    }
+
+    #[test]
+    fn rejects_invalid_socket_addresses() {
+        assert!(parse_socket_addr("127.0.0.1:0").is_err());
+        assert!(parse_socket_addr("not-an-address").is_err());
+    }
+}
@@ -0,0 +1,36 @@
+use bevy::{
+    app::ScheduleRunnerPlugin,
+    asset::{AssetMode, AssetPlugin, processor::AssetProcessor, processor::ProcessorState},
+    gltf::GltfPlugin,
+    image::{CompressedImageFormats, ImageLoader, ImagePlugin},
+    prelude::*,
+    tasks::block_on,
+    text::TextPlugin,
+};
+use shinespark::AssetProcessingPlugin;
+use std::{process::ExitCode, time::Duration};
+
+fn main() -> ExitCode {
+    let mut app = App::new();
+    app.add_plugins(MinimalPlugins.set(ScheduleRunnerPlugin::run_loop(Duration::from_millis(50))))
+        .add_plugins(AssetPlugin {
+            mode: AssetMode::Processed,
+            use_asset_processor_override: Some(true),
+            ..default()
+        })
+        .add_plugins((ImagePlugin::default(), TextPlugin, GltfPlugin::default()))
+        .register_asset_loader(ImageLoader::new(CompressedImageFormats::NONE))
+        .add_plugins(AssetProcessingPlugin)
+        .add_systems(Update, finish_when_processed);
+
+    app.run();
+    ExitCode::SUCCESS
+}
+
+fn finish_when_processed(processor: Option<Res<AssetProcessor>>, mut exit: MessageWriter<AppExit>) {
+    if processor
+        .is_some_and(|processor| block_on(processor.get_state()) == ProcessorState::Finished)
+    {
+        exit.write(AppExit::Success);
+    }
+}
@@ -0,0 +1,394 @@
+//! Blender `.blend` source processing.
+//!
+//! Blender is used as an offline importer. The processed result is a normal
+//! GLB, so the runtime continues to use Bevy's built-in glTF loader.
+
+use bevy::{
+    asset::{
+        AssetLoader, AssetPath, AsyncWriteExt, LoadContext,
+        io::{Reader, Writer},
+        processor::LoadTransformAndSave,
+        saver::{AssetSaver, SavedAsset},
+        transformer::{AssetTransformer, TransformedAsset},
+    },
+    gltf::GltfLoader,
+    prelude::*,
+    reflect::TypePath,
+};
+use serde::Deserialize;
+use std::{
+    collections::HashMap,
+    fs, io,
+    path::{Path, PathBuf},
+    process::Command,
+    time::{SystemTime, UNIX_EPOCH},
+};
+
+use crate::fighter::animation::AnimKind;
+
+const EXPORT_SCRIPT: &str = include_str!("blend_asset/export.py");
+
+#[derive(Asset, TypePath)]
+struct BlendSource {
+    glb: Vec<u8>,
+}
+
+#[derive(Default, TypePath)]
+struct BlendSourceLoader;
+
+#[derive(Debug, Deserialize)]
+struct ExportManifest {
+    dependencies: Vec<String>,
+}
+
+#[derive(Debug, Deserialize)]
+struct AnimationManifest {
+    animations: HashMap<AnimKind, String>,
+}
+
+impl AssetLoader for BlendSourceLoader {
+    type Asset = BlendSource;
+    type Settings = ();
+    type Error = io::Error;
+
+    async fn load(
+        &self,
+        reader: &mut dyn Reader,
+        _: &Self::Settings,
+        load_context: &mut LoadContext<'_>,
+    ) -> Result<Self::Asset, Self::Error> {
+        let mut source_bytes = Vec::new();
+        reader.read_to_end(&mut source_bytes).await?;
+
+        let temp = TempDir::new()?;
+        let source_path = locate_source(load_context.path().path());
+        let blend_path = if let Some(path) = source_path.as_deref() {
+            path.to_path_buf()
+        } else {
+            let path = temp.path().join("source.blend");
+            fs::write(&path, source_bytes)?;
+            path
+        };
+        let output = temp.path().join("export.gltf");
+        let script = temp.path().join("export.py");
+        let actions = referenced_actions(load_context, &asset_root()).await?;
+        let actions_path = temp.path().join("actions.json");
+        fs::write(
+            &actions_path,
+            serde_json::to_vec(&actions).map_err(io::Error::other)?,
+        )?;
+        fs::write(&script, EXPORT_SCRIPT)?;
+
+        let result = Command::new(std::env::var_os("BLENDER").unwrap_or_else(|| "blender".into()))
+            .arg("--background")
+            .arg(&blend_path)
+            .arg("--python")
+            .arg(&script)
+            .arg("--")
+            .arg(&output)
+            .arg(&actions_path)
+            .arg(&blend_path)
+            .output()
+            .map_err(|error| io::Error::other(format!("failed to start Blender: {error}")))?;
+        if !result.status.success() {
+            return Err(io::Error::other(format!(
+                "Blender export failed with {}:\n{}\n{}",
+                result.status,
+                String::from_utf8_lossy(&result.stdout),
+                String::from_utf8_lossy(&result.stderr)
+            )));
+        }
+
+        let manifest: ExportManifest =
+            serde_json::from_slice(&fs::read(temp.path().join("export-manifest.json"))?)
+                .map_err(|error| io::Error::new(io::ErrorKind::InvalidData, error))?;
+
+        let asset_root = asset_root();
+        let mut dependencies = manifest.dependencies;
+        let document: serde_json::Value = serde_json::from_slice(&fs::read(&output)?)
+            .map_err(|error| io::Error::new(io::ErrorKind::InvalidData, error))?;
+        validate_export(&document, &output)?;
+        if let Some(images) = document.get("images").and_then(serde_json::Value::as_array) {
+            for image in images {
+                if let Some(uri) = image.get("uri").and_then(serde_json::Value::as_str) {
+                    let path = temp.path().join(uri);
+                    dependencies.push(path.to_string_lossy().into_owned());
+                }
+            }
+        }
+
+        let mut seen = std::collections::HashSet::new();
+        for dependency in dependencies {
+            let physical = PathBuf::from(&dependency);
+            let Some(asset_path) = physical_to_asset_path(&physical, &asset_root) else {
+                continue;
+            };
+            if seen.insert(asset_path.clone()) {
+                // This read is intentionally discarded: it registers the file and
+                // its processed hash as a processor dependency.
+                load_context
+                    .read_asset_bytes(asset_path)
+                    .await
+                    .map_err(|error| {
+                        io::Error::other(format!("failed to read blend dependency: {error}"))
+                    })?;
+            }
+        }
+
+        let glb = make_glb(&output, &temp, load_context.path().path(), &asset_root)?;
+        Ok(BlendSource { glb })
+    }
+
+    fn extensions(&self) -> &[&str] {
+        &["blend"]
+    }
+}
+
+fn validate_export(document: &serde_json::Value, output: &Path) -> io::Result<()> {
+    for key in ["scenes", "nodes", "meshes"] {
+        let count = document
+            .get(key)
+            .and_then(serde_json::Value::as_array)
+            .map_or(0, Vec::len);
+        if count == 0 {
+            return Err(io::Error::new(
+                io::ErrorKind::InvalidData,
+                format!("Blender export {} contains no {key}", output.display()),
+            ));
+        }
+    }
+    Ok(())
+}
+
+async fn referenced_actions(
+    load_context: &mut LoadContext<'_>,
+    root: &Path,
+) -> io::Result<Vec<String>> {
+    let model_path = load_context.path().path();
+    let Some(stem) = model_path.file_stem().and_then(|stem| stem.to_str()) else {
+        return Ok(Vec::new());
+    };
+    let manifest_path = model_path
+        .parent()
+        .unwrap_or_else(|| Path::new(""))
+        .join(format!("{stem}.fighter.ron"));
+    if !root.join(&manifest_path).is_file() {
+        return Ok(Vec::new());
+    }
+    let bytes = load_context
+        .read_asset_bytes(manifest_path)
+        .await
+        .map_err(|error| io::Error::other(error.to_string()))?;
+    let manifest: AnimationManifest = ron::de::from_bytes(&bytes)
+        .map_err(|error| io::Error::new(io::ErrorKind::InvalidData, error))?;
+    Ok(manifest.animations.into_values().collect())
+}
+
+#[derive(Asset, TypePath)]
+struct ProcessedBlend {
+    bytes: Vec<u8>,
+}
+
+#[derive(Default, TypePath)]
+struct BlendTransformer;
+
+impl AssetTransformer for BlendTransformer {
+    type AssetInput = BlendSource;
+    type AssetOutput = ProcessedBlend;
+    type Settings = ();
+    type Error = io::Error;
+
+    async fn transform<'a>(
+        &'a self,
+        source: TransformedAsset<Self::AssetInput>,
+        _: &'a Self::Settings,
+    ) -> Result<TransformedAsset<Self::AssetOutput>, Self::Error> {
+        let bytes = source.glb.clone();
+        Ok(source.replace_asset(ProcessedBlend { bytes }))
+    }
+}
+
+#[derive(Default, TypePath)]
+struct BlendSaver;
+
+impl AssetSaver for BlendSaver {
+    type Asset = ProcessedBlend;
+    type Settings = ();
+    type OutputLoader = GltfLoader;
+    type Error = io::Error;
+
+    async fn save(
+        &self,
+        writer: &mut Writer,
+        asset: SavedAsset<'_, '_, Self::Asset>,
+        _: &Self::Settings,
+        _: AssetPath<'_>,
+    ) -> Result<<Self::OutputLoader as AssetLoader>::Settings, Self::Error> {
+        writer.write_all(&asset.bytes).await?;
+        Ok(default())
+    }
+}
+
+type BlendProcessor = LoadTransformAndSave<BlendSourceLoader, BlendTransformer, BlendSaver>;
+
+pub struct BlendAssetProcessingPlugin;
+
+impl Plugin for BlendAssetProcessingPlugin {
+    fn build(&self, app: &mut App) {
+        app.init_asset::<BlendSource>()
+            .init_asset::<ProcessedBlend>()
+            .register_asset_loader(BlendSourceLoader)
+            .register_asset_processor(BlendProcessor::new(BlendTransformer, BlendSaver))
+            .set_default_asset_processor::<BlendProcessor>("blend");
+    }
+}
+
+struct TempDir(PathBuf);
+
+impl TempDir {
+    fn new() -> io::Result<Self> {
+        let stamp = SystemTime::now()
+            .duration_since(UNIX_EPOCH)
+            .unwrap_or_default()
+            .as_nanos();
+        let path =
+            std::env::temp_dir().join(format!("shinespark-blend-{}-{stamp}", std::process::id()));
+        fs::create_dir_all(&path)?;
+        Ok(Self(path))
+    }
+    fn path(&self) -> &Path {
+        &self.0
+    }
+}
+
+impl Drop for TempDir {
+    fn drop(&mut self) {
+        let _ = fs::remove_dir_all(&self.0);
+    }
+}
+
+fn asset_root() -> PathBuf {
+    std::env::var_os("BEVY_ASSET_ROOT")
+        .map(PathBuf::from)
+        .unwrap_or_else(|| std::env::current_dir().unwrap_or_default().join("assets"))
+}
+
+fn locate_source(path: &Path) -> Option<PathBuf> {
+    let root = asset_root();
+    [root.join(path), PathBuf::from(path)]
+        .into_iter()
+        .find(|candidate| candidate.is_file())
+}
+
+fn physical_to_asset_path(path: &Path, root: &Path) -> Option<String> {
+    let canonical = fs::canonicalize(path).ok()?;
+    let root = fs::canonicalize(root).ok()?;
+    let relative = canonical.strip_prefix(root).ok()?;
+    Some(relative.to_string_lossy().replace('\\', "/"))
+}
+
+fn make_glb(
+    gltf_path: &Path,
+    temp: &TempDir,
+    model_asset_path: &Path,
+    asset_root: &Path,
+) -> io::Result<Vec<u8>> {
+    let mut json: serde_json::Value = serde_json::from_slice(&fs::read(gltf_path)?)
+        .map_err(|error| io::Error::new(io::ErrorKind::InvalidData, error))?;
+    let bin_name = json["buffers"][0]["uri"].as_str().ok_or_else(|| {
+        io::Error::new(io::ErrorKind::InvalidData, "glTF has no binary buffer URI")
+    })?;
+    let mut bin = fs::read(temp.path().join(bin_name))?;
+    let model_parent = model_asset_path.parent().unwrap_or_else(|| Path::new(""));
+    let image_count = json["images"].as_array().map_or(0, Vec::len);
+    if image_count > 0 && !json["bufferViews"].is_array() {
+        return Err(io::Error::new(
+            io::ErrorKind::InvalidData,
+            "glTF bufferViews are not an array",
+        ));
+    }
+    for index in 0..image_count {
+        let uri = json["images"][index]
+            .get("uri")
+            .and_then(serde_json::Value::as_str)
+            .map(str::to_owned);
+        let Some(uri) = uri else { continue };
+        if uri.starts_with("data:") {
+            continue;
+        }
+        let uri_path = temp.path().join(uri);
+        if let Some(asset_path) = physical_to_asset_path(&uri_path, asset_root) {
+            json["images"][index]["uri"] =
+                serde_json::Value::String(relative_uri(model_parent, Path::new(&asset_path)));
+        } else {
+            let bytes = fs::read(&uri_path)?;
+            while bin.len() % 4 != 0 {
+                bin.push(0);
+            }
+            let offset = bin.len();
+            bin.extend_from_slice(&bytes);
+            let mime = mime_type(&uri_path);
+            let view = json["bufferViews"].as_array().unwrap().len();
+            json["bufferViews"]
+                .as_array_mut()
+                .unwrap()
+                .push(serde_json::json!({
+                    "buffer": 0,
+                    "byteOffset": offset,
+                    "byteLength": bytes.len(),
+                }));
+            json["images"][index].as_object_mut().unwrap().remove("uri");
+            json["images"][index]["bufferView"] = serde_json::Value::from(view);
+            json["images"][index]["mimeType"] = serde_json::Value::String(mime.to_owned());
+        }
+    }
+    json["buffers"][0]["byteLength"] = serde_json::Value::from(bin.len());
+    json["buffers"][0].as_object_mut().unwrap().remove("uri");
+    let mut json_bytes = serde_json::to_vec(&json).map_err(io::Error::other)?;
+    while json_bytes.len() % 4 != 0 {
+        json_bytes.push(b' ');
+    }
+    while bin.len() % 4 != 0 {
+        bin.push(0);
+    }
+    let length = 12 + 8 + json_bytes.len() + 8 + bin.len();
+    let mut glb = Vec::with_capacity(length);
+    glb.extend_from_slice(b"glTF");
+    glb.extend_from_slice(&2u32.to_le_bytes());
+    glb.extend_from_slice(&(length as u32).to_le_bytes());
+    glb.extend_from_slice(&(json_bytes.len() as u32).to_le_bytes());
+    glb.extend_from_slice(b"JSON");
+    glb.extend_from_slice(&json_bytes);
+    glb.extend_from_slice(&(bin.len() as u32).to_le_bytes());
+    glb.extend_from_slice(b"BIN\0");
+    glb.extend_from_slice(&bin);
+    Ok(glb)
+}
+
+fn relative_uri(from: &Path, to: &Path) -> String {
+    let from: Vec<_> = from.components().collect();
+    let to: Vec<_> = to.components().collect();
+    let common = from.iter().zip(&to).take_while(|(a, b)| a == b).count();
+    let mut result = PathBuf::new();
+    for _ in common..from.len() {
+        result.push("..");
+    }
+    for component in &to[common..] {
+        result.push(component.as_os_str());
+    }
+    result.to_string_lossy().replace('\\', "/")
+}
+
+fn mime_type(path: &Path) -> &'static str {
+    match path
+        .extension()
+        .and_then(|e| e.to_str())
+        .unwrap_or_default()
+        .to_ascii_lowercase()
+        .as_str()
+    {
+        "jpg" | "jpeg" => "image/jpeg",
+        "webp" => "image/webp",
+        _ => "image/png",
+    }
+}
@@ -0,0 +1,80 @@
+import bpy
+import json
+import os
+import sys
+
+
+def main():
+    output = sys.argv[sys.argv.index("--") + 1]
+    actions_path = sys.argv[sys.argv.index("--") + 2]
+    source_path = sys.argv[sys.argv.index("--") + 3]
+    loaded_path = os.path.realpath(bpy.data.filepath)
+    expected_path = os.path.realpath(source_path)
+    if loaded_path != expected_path:
+        raise RuntimeError(
+            f"Blender loaded {loaded_path!r} instead of {expected_path!r}"
+        )
+    if not bpy.data.objects or not bpy.data.meshes:
+        raise RuntimeError("Blender loaded an empty scene")
+    with open(actions_path) as file:
+        actions_to_keep = set(json.load(file))
+
+    for obj in bpy.data.objects:
+        if not obj.animation_data:
+            continue
+        for track in list(obj.animation_data.nla_tracks):
+            if track.name.startswith("[Action Stash]"):
+                obj.animation_data.nla_tracks.remove(track)
+
+    nla_tracks = [
+        track
+        for obj in bpy.data.objects
+        if obj.animation_data
+        for track in obj.animation_data.nla_tracks
+    ]
+    use_nla_tracks = bool(nla_tracks)
+
+    # For blends without NLA tracks, use the actions referenced by the fighter
+    # manifest instead of sampling every source action.
+    if not use_nla_tracks and actions_to_keep:
+        from io_scene_gltf2 import GLTF2_filter_action
+
+        if not hasattr(bpy.types.Scene, "gltf_action_filter"):
+            bpy.types.Scene.gltf_action_filter = bpy.props.CollectionProperty(
+                type=GLTF2_filter_action
+            )
+        scene = bpy.context.scene
+        scene.gltf_action_filter.clear()
+        for action in bpy.data.actions:
+            item = scene.gltf_action_filter.add()
+            item.action = action
+            item.keep = action.name in actions_to_keep
+
+    bpy.ops.export_scene.gltf(
+        filepath=output,
+        export_format="GLTF_SEPARATE",
+        export_keep_originals=True,
+        export_extras=True,
+        export_animations=True,
+        export_skins=True,
+        export_morph=True,
+        export_yup=True,
+        export_def_bones=True,
+        export_action_filter=False,
+        export_animation_mode="NLA_TRACKS" if use_nla_tracks else "ACTIONS",
+    )
+
+    dependencies = []
+    for image in bpy.data.images:
+        if image.source not in {"FILE", "TILED"}:
+            continue
+        path = image.filepath_raw or image.filepath
+        if path and not image.packed_file:
+            dependencies.append(bpy.path.abspath(path))
+
+    with open(os.path.join(os.path.dirname(output), "export-manifest.json"), "w") as file:
+        json.dump({"dependencies": sorted(set(dependencies))}, file)
+
+
+if __name__ == "__main__":
+    main()
@@ -3,15 +3,16 @@
 use std::{collections::HashMap, time::Duration};

 use bevy::{
-    prelude::*,
-    settings::{ReflectSettingsGroup, SaveSettingsDeferred, SettingsGroup},
+    camera::{CameraOutputMode, visibility::RenderLayers}, input::InputSystems, prelude::*, render::render_resource::BlendState, settings::{ReflectSettingsGroup, SaveSettingsDeferred, SettingsGroup},
 };
-use bevy_egui::{EguiContexts, EguiPrimaryContextPass, egui};
-use bevy_ggrs::RollbackFrameRate;
+use bevy_egui::{EguiContexts, EguiGlobalSettings, EguiPrimaryContextPass, PrimaryEguiContext, egui};
+use bevy_ggrs::{RollbackFrameRate, RunGgrsSystems};
 use enum_cycling::EnumCycle;
 use enum_cycling_derive::EnumCycle;

-use crate::{player::Player, replay::StopReplayRecording, AppState};
+use crate::{AppState, player::Player, replay::StopReplayRecording};
+
+mod save_state;

 pub const PLAYER_DEBUG_ROW_COUNT: usize = 6;

@@ -48,7 +49,7 @@ impl PresentationMotionMode {
    }
 }

-#[derive(EnumCycle, Reflect)]
+#[derive(Clone, Copy, Debug, PartialEq, Eq, EnumCycle, Reflect)]
 pub enum GameSpeedDebug {
    Full,
    Half,
@@ -114,6 +115,7 @@ enum DebugFlag {
    Hurtboxes,
    Camera,
    DrawThroughGeometry,
+    FrameStepping,
 }

 #[derive(Clone, Copy)]
@@ -174,6 +176,10 @@ const WORLD_MENU: &[DebugMenuEntry] = &[
    DebugMenuEntry::GameSpeed {
        label: "Game speed",
    },
+    DebugMenuEntry::Toggle {
+        label: "Frame stepping",
+        flag: DebugFlag::FrameStepping,
+    },
 ];

 const DIAGNOSTICS_MENU: &[DebugMenuEntry] = &[DebugMenuEntry::Toggle {
@@ -233,6 +239,8 @@ pub struct DebugSettings {
    selections: Vec<usize>,
    #[reflect(ignore)]
    pub player_rows: HashMap<usize, [FighterDebugRowKind; PLAYER_DEBUG_ROW_COUNT]>,
+    #[reflect(ignore)]
+    pub frame_stepping: bool,
    pub network: bool,
    pub ecb: bool,
    pub stage_collision: bool,
@@ -253,6 +261,7 @@ impl Default for DebugSettings {
            pages: vec![DebugMenuPage::Static(ROOT_MENU)],
            selections: vec![0],
            player_rows: HashMap::new(),
+            frame_stepping: false,
            network: false,
            ecb: false,
            stage_collision: false,
@@ -325,6 +334,7 @@ impl DebugSettings {
            DebugFlag::Hurtboxes => self.hurtboxes,
            DebugFlag::DrawThroughGeometry => self.draw_through_geometry,
            DebugFlag::Camera => self.camera,
+            DebugFlag::FrameStepping => self.frame_stepping,
        }
    }

@@ -340,6 +350,7 @@ impl DebugSettings {
                self.draw_through_geometry = !self.draw_through_geometry
            }
            DebugFlag::Camera => self.camera = !self.camera,
+            DebugFlag::FrameStepping => self.frame_stepping = !self.frame_stepping,
        }
    }

@@ -347,10 +358,6 @@ impl DebugSettings {
        self.motion_sampling.cycle();
    }

-    fn cycle_game_speed(&mut self) {
-        self.motion_sampling.cycle();
-    }
-
    fn rows_mut(&mut self, handle: usize) -> &mut [FighterDebugRowKind; PLAYER_DEBUG_ROW_COUNT] {
        self.player_rows
            .entry(handle)
@@ -360,9 +367,36 @@ impl DebugSettings {

 pub struct DebugToolsPlugin;

+#[derive(Resource, Default)]
+struct FrameStepState {
+    requested: bool,
+    time_backup: Option<Time>,
+    last_step_time: Time
+}
+
 impl Plugin for DebugToolsPlugin {
    fn build(&self, app: &mut App) {
        app.init_resource::<DebugSettings>()
+            .init_resource::<FrameStepState>()
+            .init_resource::<save_state::DebugSaveState>()
+            .add_systems(OnEnter(AppState::InMatch), save_state::clear)
+            .add_systems(OnExit(AppState::InMatch), save_state::clear)
+            .add_systems(
+                PreUpdate,
+                prepare_frame_step
+                    .after(InputSystems)
+                    .before(RunGgrsSystems)
+                    .run_if(in_state(AppState::InMatch)),
+            )
+            .add_systems(
+                PreUpdate,
+                save_state::save_or_restore
+                    .after(InputSystems)
+                    .before(RunGgrsSystems)
+                    .run_if(in_state(AppState::InMatch)),
+            )
+            .add_systems(Startup, spawn_egui_camera)
+            .add_systems(PreUpdate, restore_frame_step_time.after(RunGgrsSystems))
            .add_systems(
                Update,
                (handle_palette_input, sync_gizmo_depth_bias)
@@ -373,6 +407,26 @@ impl Plugin for DebugToolsPlugin {
    }
 }

+pub fn spawn_egui_camera(mut commands: Commands, mut egui_global_settings: ResMut<EguiGlobalSettings>,) {
+    egui_global_settings.auto_create_primary_context = false;
+    commands.spawn((
+        // The `PrimaryEguiContext` component requires everything needed to render a primary context.
+        PrimaryEguiContext,
+        Camera2d,
+        // Setting RenderLayers to none makes sure we won't render anything apart from the UI.
+        RenderLayers::none(),
+        Camera {
+            order: 2,
+            output_mode: CameraOutputMode::Write {
+                blend_state: Some(BlendState::ALPHA_BLENDING),
+                clear_color: ClearColorConfig::None,
+            },
+            clear_color: ClearColorConfig::Custom(Color::NONE),
+            ..default()
+        },
+    ));
+}
+
 fn player_handles(players: &Query<&Player>) -> Vec<usize> {
    let mut handles = players
        .iter()
@@ -391,6 +445,141 @@ fn page_len(page: DebugMenuPage, player_handles: &[usize]) -> usize {
    }
 }

+fn queue_settings_save(commands: &mut Commands) {
+    commands.queue(SaveSettingsDeferred(Duration::from_secs_f32(0.1)));
+}
+
+fn frame_step_duration(frame_rate: usize) -> Duration {
+    Duration::from_nanos(1_000_000_000u64 / frame_rate as u64)
+}
+
+fn prepare_frame_step(
+    settings: Res<DebugSettings>,
+    gamepads: Query<&Gamepad>,
+    key: Res<ButtonInput<KeyCode>>,
+    mut state: ResMut<FrameStepState>,
+    mut time: ResMut<Time>,
+    frame_rate: Res<RollbackFrameRate>,
+) {
+    if !settings.frame_stepping {
+        state.requested = false;
+        return;
+    }
+
+    let pressed = gamepads
+        .iter()
+        .any(|gamepad| gamepad.pressed(GamepadButton::DPadDown));
+
+    let just_pressed = gamepads
+            .iter()
+            .any(|gamepad| gamepad.just_pressed(GamepadButton::DPadDown));
+
+    let just_pressed = key.just_pressed(KeyCode::F4) || just_pressed;
+    let pressed = key.pressed(KeyCode::F4) || pressed;
+
+    if just_pressed {
+        state.last_step_time = time.clone();
+    }
+
+    let can_repress = pressed && (time.elapsed() - state.last_step_time.elapsed()).as_millis() > 500;
+
+    if !settings.menu_open && (just_pressed || can_repress)
+    {
+        state.requested = true;
+    }
+
+    state.time_backup = Some(*time);
+    let delta = if state.requested {
+        frame_step_duration(**frame_rate)
+    } else {
+        Duration::ZERO
+    };
+    time.advance_by(delta);
+}
+
+fn restore_frame_step_time(mut state: ResMut<FrameStepState>, mut time: ResMut<Time>) {
+    if let Some(backup) = state.time_backup.take() {
+        *time = backup;
+        state.requested = false;
+    }
+}
+
+fn activate_selected(
+    settings: &mut DebugSettings,
+    page_len: usize,
+    player_handles: &[usize],
+    commands: &mut Commands,
+) {
+    if page_len == 0 {
+        return;
+    }
+
+    match settings.page() {
+        DebugMenuPage::Static(entries) => match entries[settings.selected()] {
+            DebugMenuEntry::StopRecording { .. } => {
+                commands.insert_resource(StopReplayRecording);
+            }
+            DebugMenuEntry::Toggle { flag, .. } => {
+                settings.toggle_flag(flag);
+                if !matches!(flag, DebugFlag::FrameStepping) {
+                    queue_settings_save(commands);
+                }
+            }
+            DebugMenuEntry::Submenu { entries, .. } => {
+                settings.push_page(DebugMenuPage::Static(entries));
+            }
+            DebugMenuEntry::PlayerSlots { .. } => settings.push_page(DebugMenuPage::PlayerList),
+            DebugMenuEntry::MotionSampling { .. } => {
+                settings.cycle_motion_sampling();
+                queue_settings_save(commands);
+            }
+            DebugMenuEntry::GameSpeed { .. } => {
+                commands.insert_resource(RollbackFrameRate(settings.game_speed.frame_rate()));
+                queue_settings_save(commands);
+            }
+        },
+        DebugMenuPage::PlayerList => {
+            let handle = player_handles[settings.selected()];
+            settings.rows_mut(handle);
+            settings.push_page(DebugMenuPage::PlayerRows(handle));
+        }
+        DebugMenuPage::PlayerRows(_) => {}
+    }
+}
+
+fn cycle_selected_value(settings: &mut DebugSettings, direction: i8, commands: &mut Commands) {
+    match settings.page() {
+        DebugMenuPage::Static(entries) => {
+            if let Some(entry) = entries.get(settings.selected()) {
+                match entry {
+                    DebugMenuEntry::MotionSampling { .. } => {
+                        settings.cycle_motion_sampling();
+                        queue_settings_save(commands);
+                    }
+                    DebugMenuEntry::GameSpeed { .. } => {
+                        settings.game_speed = if direction > 0 {
+                            settings.game_speed.up()
+                        } else {
+                            settings.game_speed.down()
+                        };
+                        commands
+                            .insert_resource(RollbackFrameRate(settings.game_speed.frame_rate()));
+                        queue_settings_save(commands);
+                    }
+                    _ => {}
+                }
+            }
+        }
+        DebugMenuPage::PlayerRows(handle) => {
+            let selected = settings.selected();
+            let rows = settings.rows_mut(handle);
+            rows[selected] = rows[selected].cycle(direction);
+            queue_settings_save(commands);
+        }
+        DebugMenuPage::PlayerList => {}
+    }
+}
+
 fn handle_palette_input(
    keyboard: Res<ButtonInput<KeyCode>>,
    gamepads: Query<(Entity, &Gamepad)>,
@@ -402,6 +591,15 @@ fn handle_palette_input(
        settings.toggle_flag(DebugFlag::DrawThroughGeometry);
    }

+    if keyboard.just_pressed(KeyCode::F3) {
+        settings.menu_open = !settings.menu_open;
+        settings.controller = None;
+        if settings.menu_open {
+            settings.reset_navigation();
+        }
+        return;
+    }
+
    if !settings.menu_open {
        for (entity, gamepad) in &gamepads {
            if gamepad.just_pressed(GamepadButton::Start) && gamepad.pressed(GamepadButton::DPadUp)
@@ -415,14 +613,15 @@ fn handle_palette_input(
        return;
    }

-    let Some(controller) = settings.controller else {
-        settings.menu_open = false;
-        return;
-    };
-    let Ok((_, gamepad)) = gamepads.get(controller) else {
-        settings.menu_open = false;
-        settings.controller = None;
-        return;
+    let gamepad = if let Some(controller) = settings.controller {
+        let Ok((_, gamepad)) = gamepads.get(controller) else {
+            settings.menu_open = false;
+            settings.controller = None;
+            return;
+        };
+        Some(gamepad)
+    } else {
+        None
    };
    let player_handles = player_handles(&players);
    let page = settings.page();
@@ -432,95 +631,51 @@ fn handle_palette_input(
        *settings.selected_mut() = 0;
    }

-    if gamepad.just_pressed(GamepadButton::DPadUp) && page_len != 0 {
+    if (gamepad.is_some_and(|pad| pad.just_pressed(GamepadButton::DPadUp))
+        || keyboard.just_pressed(KeyCode::ArrowUp)
+        || keyboard.just_pressed(KeyCode::KeyW))
+        && page_len != 0
+    {
        let selected = settings.selected_mut();
        *selected = selected.checked_sub(1).unwrap_or(page_len - 1);
    }
-    if gamepad.just_pressed(GamepadButton::DPadDown) && page_len != 0 {
+    if (gamepad.is_some_and(|pad| pad.just_pressed(GamepadButton::DPadDown))
+        || keyboard.just_pressed(KeyCode::ArrowDown)
+        || keyboard.just_pressed(KeyCode::KeyS))
+        && page_len != 0
+    {
        let selected = settings.selected_mut();
        *selected = (*selected + 1) % page_len;
    }

-    let direction = if gamepad.just_pressed(GamepadButton::DPadLeft) {
+    let direction = if gamepad.is_some_and(|pad| pad.just_pressed(GamepadButton::DPadLeft))
+        || keyboard.just_pressed(KeyCode::ArrowLeft)
+        || keyboard.just_pressed(KeyCode::KeyA)
+    {
        Some(-1)
-    } else if gamepad.just_pressed(GamepadButton::DPadRight) {
+    } else if gamepad.is_some_and(|pad| pad.just_pressed(GamepadButton::DPadRight))
+        || keyboard.just_pressed(KeyCode::ArrowRight)
+        || keyboard.just_pressed(KeyCode::KeyD)
+    {
        Some(1)
    } else {
        None
    };

    if let Some(direction) = direction {
-        match page {
-            DebugMenuPage::Static(entries) => {
-                if let Some(entry) = entries.get(settings.selected()) {
-                    match entry {
-                        DebugMenuEntry::StopRecording { .. } => {}
-                        DebugMenuEntry::MotionSampling { .. } => settings.cycle_motion_sampling(),
-                        DebugMenuEntry::GameSpeed { .. } => {
-                            if direction > 0 {
-                                settings.game_speed = settings.game_speed.up();
-                            } else {
-                                settings.game_speed = settings.game_speed.down();
-                            }
-
-                            commands.insert_resource(RollbackFrameRate(
-                                settings.game_speed.frame_rate(),
-                            ));
-                        }
-                        _ => {}
-                    }
-                }
-            }
-            DebugMenuPage::PlayerList => todo!(),
-            DebugMenuPage::PlayerRows(_) => {
-                let DebugMenuPage::PlayerRows(handle) = page else {
-                    unreachable!("player row navigation must have a player row page")
-                };
-                let selected = settings.selected();
-                let rows = settings.rows_mut(handle);
-                rows[selected] = rows[selected].cycle(direction);
-
-                commands.queue(SaveSettingsDeferred(Duration::from_secs_f32(0.1)));
-            }
-        }
+        cycle_selected_value(&mut settings, direction, &mut commands);
    }
-
-    if matches!(page, DebugMenuPage::PlayerRows(_)) {
-        let direction = if gamepad.just_pressed(GamepadButton::DPadLeft) {
-            Some(-1)
-        } else if gamepad.just_pressed(GamepadButton::DPadRight) {
-            Some(1)
-        } else {
-            None
-        };
-        if let Some(direction) = direction {}
+    if (gamepad.is_some_and(|pad| pad.just_pressed(GamepadButton::South))
+        || keyboard.just_pressed(KeyCode::Enter)
+        || keyboard.just_pressed(KeyCode::Space))
+        && page_len != 0
+    {
+        activate_selected(&mut settings, page_len, &player_handles, &mut commands);
    }
-    if gamepad.just_pressed(GamepadButton::South) {
-        match page {
-            DebugMenuPage::Static(entries) if page_len != 0 => match entries[settings.selected()] {
-                DebugMenuEntry::StopRecording { .. } => {
-                    commands.insert_resource(StopReplayRecording);
-                }
-                DebugMenuEntry::Toggle { flag, .. } => {
-                    settings.toggle_flag(flag);
-                    commands.queue(SaveSettingsDeferred(Duration::from_secs_f32(0.1)));
-                }
-                DebugMenuEntry::Submenu { entries, .. } => {
-                    settings.push_page(DebugMenuPage::Static(entries));
-                }
-                DebugMenuEntry::PlayerSlots { .. } => settings.push_page(DebugMenuPage::PlayerList),
-                DebugMenuEntry::MotionSampling { .. } => settings.cycle_motion_sampling(),
-                DebugMenuEntry::GameSpeed { .. } => {}
-            },
-            DebugMenuPage::PlayerList if page_len != 0 => {
-                let handle = player_handles[settings.selected()];
-                settings.rows_mut(handle);
-                settings.push_page(DebugMenuPage::PlayerRows(handle));
-            }
-            _ => {}
-        }
-    }
-    if gamepad.just_pressed(GamepadButton::West) && !settings.pop_page() {
+    if (gamepad.is_some_and(|pad| pad.just_pressed(GamepadButton::West))
+        || keyboard.just_pressed(KeyCode::Escape))
+        && !settings.pop_page()
+    {
        settings.menu_open = false;
        settings.controller = None;
    }
@@ -542,8 +697,9 @@ fn sync_gizmo_depth_bias(settings: Res<DebugSettings>, mut configs: ResMut<Gizmo

 fn draw_palette(
    mut contexts: EguiContexts,
-    settings: Res<DebugSettings>,
+    mut settings: ResMut<DebugSettings>,
    players: Query<&Player>,
+    mut commands: Commands,
 ) -> Result {
    if !settings.menu_open {
        return Ok(());
@@ -551,7 +707,7 @@ fn draw_palette(

    let player_handles = player_handles(&players);
    let page = settings.page();
-    let selected = settings.selected();
+    let page_len = page_len(page, &player_handles);
    egui::Window::new("Debug")
        .anchor(egui::Align2::RIGHT_TOP, egui::vec2(-12.0, 12.0))
        .resizable(false)
@@ -560,38 +716,113 @@ fn draw_palette(
            match page {
                DebugMenuPage::Static(entries) => {
                    for (index, entry) in entries.iter().enumerate() {
-                        let marker = if index == selected { ">" } else { " " };
-                        match entry {
-                            DebugMenuEntry::StopRecording { label } => {
-                                ui.label(format!("{marker} {label}"));
+                        ui.horizontal(|ui| {
+                            ui.label(if index == settings.selected() {
+                                ">"
+                            } else {
+                                " "
+                            });
+                            match entry {
+                                DebugMenuEntry::StopRecording { label } => {
+                                    if ui.button(*label).clicked() {
+                                        *settings.selected_mut() = index;
+                                        activate_selected(
+                                            &mut settings,
+                                            page_len,
+                                            &player_handles,
+                                            &mut commands,
+                                        );
+                                    }
+                                }
+                                DebugMenuEntry::Toggle { label, flag } => {
+                                    let mut value = settings.flag(*flag);
+                                    if ui.checkbox(&mut value, *label).changed() {
+                                        settings.toggle_flag(*flag);
+                                        if !matches!(flag, DebugFlag::FrameStepping) {
+                                            queue_settings_save(&mut commands);
+                                        }
+                                    }
+                                }
+                                DebugMenuEntry::Submenu { label, .. }
+                                | DebugMenuEntry::PlayerSlots { label } => {
+                                    if ui.button(format!("{label} >")).clicked() {
+                                        *settings.selected_mut() = index;
+                                        activate_selected(
+                                            &mut settings,
+                                            page_len,
+                                            &player_handles,
+                                            &mut commands,
+                                        );
+                                    }
+                                }
+                                DebugMenuEntry::MotionSampling { label } => {
+                                    let old = settings.motion_sampling;
+                                    egui::ComboBox::from_id_salt(("debug-motion", index))
+                                        .width(180.0)
+                                        .selected_text(format!("{label}: {}", old.label()))
+                                        .show_ui(ui, |ui| {
+                                            ui.selectable_value(
+                                                &mut settings.motion_sampling,
+                                                PresentationMotionMode::Interpolation,
+                                                "Interpolation",
+                                            );
+                                            ui.selectable_value(
+                                                &mut settings.motion_sampling,
+                                                PresentationMotionMode::Extrapolation,
+                                                "Extrapolation",
+                                            );
+                                        });
+                                    if settings.motion_sampling != old {
+                                        queue_settings_save(&mut commands);
+                                    }
+                                }
+                                DebugMenuEntry::GameSpeed { label } => {
+                                    let old = settings.game_speed;
+                                    egui::ComboBox::from_id_salt(("debug-speed", index))
+                                        .width(180.0)
+                                        .selected_text(format!("{label}: {}", old.label()))
+                                        .show_ui(ui, |ui| {
+                                            for speed in [
+                                                GameSpeedDebug::Full,
+                                                GameSpeedDebug::Half,
+                                                GameSpeedDebug::Quarter,
+                                            ] {
+                                                ui.selectable_value(
+                                                    &mut settings.game_speed,
+                                                    speed,
+                                                    speed.label(),
+                                                );
+                                            }
+                                        });
+                                    if settings.game_speed != old {
+                                        commands.insert_resource(RollbackFrameRate(
+                                            settings.game_speed.frame_rate(),
+                                        ));
+                                        queue_settings_save(&mut commands);
+                                    }
+                                }
                            }
-                            DebugMenuEntry::Toggle { label, flag } => {
-                                let state = if settings.flag(*flag) { "on" } else { "off" };
-                                ui.label(format!("{marker} {label}: {state}"));
-                            }
-                            DebugMenuEntry::Submenu { label, .. }
-                            | DebugMenuEntry::PlayerSlots { label } => {
-                                ui.label(format!("{marker} {label} >"));
-                            }
-                            DebugMenuEntry::MotionSampling { label } => {
-                                ui.label(format!(
-                                    "{marker} {label}: {}",
-                                    settings.motion_sampling.label()
-                                ));
-                            }
-                            DebugMenuEntry::GameSpeed { label } => {
-                                ui.label(format!(
-                                    "{marker} {label}: {}",
-                                    settings.game_speed.label()
-                                ));
-                            }
-                        }
+                        });
                    }
                }
                DebugMenuPage::PlayerList => {
                    for (index, handle) in player_handles.iter().enumerate() {
-                        let marker = if index == selected { ">" } else { " " };
-                        ui.label(format!("{marker} Player {} >", handle + 1));
+                        ui.horizontal(|ui| {
+                            ui.label(if index == settings.selected() {
+                                ">"
+                            } else {
+                                " "
+                            });
+                            if ui.button(format!("Player {} >", handle + 1)).clicked() {
+                                *settings.selected_mut() = index;
+                                activate_selected(
+                                    &mut settings,
+                                    page_len,
+                                    &player_handles,
+                                    &mut commands,
+                                );
+                            }
+                        });
                    }
                    if player_handles.is_empty() {
                        ui.label("No players in match");
@@ -604,16 +835,30 @@ fn draw_palette(
                        .unwrap_or([FighterDebugRowKind::None; PLAYER_DEBUG_ROW_COUNT]);
                    ui.label(format!("Player {}", handle + 1));
                    for (index, row) in rows.iter().enumerate() {
-                        let marker = if index == selected { ">" } else { " " };
-                        ui.label(format!("{marker} Row {}: {}", index + 1, row.label()));
+                        ui.horizontal(|ui| {
+                            ui.label(if index == settings.selected() {
+                                ">"
+                            } else {
+                                " "
+                            });
+                            egui::ComboBox::from_id_salt(("debug-row", handle, index))
+                                .width(180.0)
+                                .selected_text(format!("Row {}: {}", index + 1, row.label()))
+                                .show_ui(ui, |ui| {
+                                    let rows = settings.rows_mut(handle);
+                                    for kind in FighterDebugRowKind::ALL {
+                                        ui.selectable_value(&mut rows[index], kind, kind.label());
+                                    }
+                                });
+                        });
                    }
                }
            }
            ui.separator();
            let controls = if matches!(page, DebugMenuPage::PlayerRows(_)) {
-                "D-pad: select/change   B: back"
+                "Arrows/WASD: select/change   Escape/B: back"
            } else {
-                "D-pad: select   A: enter/toggle   Left/right: change   B: back"
+                "Arrows/WASD: select   Enter/A: activate   Escape/B: back"
            };
            ui.label(controls);
        });
@@ -703,4 +948,29 @@ mod tests {
        mode.cycle();
        assert_eq!(mode, PresentationMotionMode::Interpolation);
    }
+
+    #[test]
+    fn game_speed_has_expected_frame_rates() {
+        assert_eq!(GameSpeedDebug::Full.frame_rate(), 60);
+        assert_eq!(GameSpeedDebug::Half.frame_rate(), 30);
+        assert_eq!(GameSpeedDebug::Quarter.frame_rate(), 15);
+    }
+
+    #[test]
+    fn frame_stepping_is_disabled_by_default_and_uses_game_speed_timestep() {
+        let settings = DebugSettings::default();
+
+        assert!(!settings.frame_stepping);
+        assert_eq!(frame_step_duration(60), Duration::from_nanos(16_666_666));
+        assert_eq!(frame_step_duration(30), Duration::from_nanos(33_333_333));
+    }
+
+    #[test]
+    fn empty_player_list_does_not_activate() {
+        let mut settings = DebugSettings::default();
+        settings.push_page(DebugMenuPage::PlayerList);
+
+        assert_eq!(page_len(settings.page(), &[]), 0);
+        assert_eq!(settings.selected(), 0);
+    }
 }
@@ -0,0 +1,196 @@
+use bevy::prelude::*;
+
+use crate::{
+    camera::MatchCamera,
+    fighter::{
+        FighterECB, FighterFacingDirection, FighterHitboxes, FighterHitstop, FighterHitstopShake,
+        FighterPreviousFacingDirection, FighterPreviousTranslation, FighterSurfaceState,
+        FighterTranslation, FighterVelocity,
+        animation::FighterAnimationFrame,
+        attack::{
+            FighterDamage, FighterKnockbackVelocity, FighterPendingHitReaction, FighterPendingHits,
+            FighterSolvedHurtboxes, FighterStaleMoveQueue,
+        },
+        baked_animation::FighterBoneMatrices,
+        state::FighterState,
+    },
+    input::FighterInput,
+    player::Player,
+    stage::line::StageCollision,
+};
+
+#[derive(Resource, Default)]
+pub(super) struct DebugSaveState {
+    checkpoint: Option<Checkpoint>,
+}
+
+#[derive(Clone)]
+struct Checkpoint {
+    fighters: Vec<FighterCheckpoint>,
+    stage_collision: StageCollision,
+    pending_hits: FighterPendingHits,
+}
+
+#[derive(Clone)]
+struct FighterCheckpoint {
+    entity: Entity,
+    handle: usize,
+    ecb: FighterECB,
+    previous_ecb: crate::fighter::ecb::FighterPreviousECB,
+    velocity: FighterVelocity,
+    translation: FighterTranslation,
+    previous_translation: FighterPreviousTranslation,
+    facing: FighterFacingDirection,
+    previous_facing: FighterPreviousFacingDirection,
+    animation: FighterAnimationFrame,
+    state: FighterState,
+    input: FighterInput,
+    damage: FighterDamage,
+    pending_hit_reaction: FighterPendingHitReaction,
+    hitstop: FighterHitstop,
+    hitstop_shake: FighterHitstopShake,
+    knockback_velocity: FighterKnockbackVelocity,
+    stale_moves: FighterStaleMoveQueue,
+    hitboxes: FighterHitboxes,
+    solved_hurtboxes: FighterSolvedHurtboxes,
+    bone_matrices: FighterBoneMatrices,
+    surface: FighterSurfaceState,
+}
+
+pub(super) fn save_or_restore(world: &mut World) {
+    if world.resource::<super::DebugSettings>().menu_open {
+        return;
+    }
+
+    let left = world
+        .query::<&Gamepad>()
+        .iter(world)
+        .any(|gamepad| gamepad.just_pressed(GamepadButton::DPadLeft));
+    let right = world
+        .query::<&Gamepad>()
+        .iter(world)
+        .any(|gamepad| gamepad.just_pressed(GamepadButton::DPadRight));
+
+    if left == right {
+        return;
+    }
+
+    let Some(roster) = world
+        .get_resource::<crate::fighter::FighterRoster>()
+        .map(|roster| roster.0.clone())
+    else {
+        return;
+    };
+    if roster.len() != 1 {
+        warn!("Save states are only available in single-player matches");
+        return;
+    }
+
+    if left {
+        let Some(stage_collision) = world.get_resource::<StageCollision>().cloned() else {
+            return;
+        };
+        let mut checkpoint_fighters = Vec::with_capacity(roster.len());
+        for entity in roster.iter().copied() {
+            let Some(checkpoint) = capture_fighter(world, entity) else {
+                warn!("Could not save the current fighter state");
+                return;
+            };
+            checkpoint_fighters.push(checkpoint);
+        }
+        let pending_hits = world.resource::<FighterPendingHits>().clone();
+        world.resource_mut::<DebugSaveState>().checkpoint = Some(Checkpoint {
+            fighters: checkpoint_fighters,
+            stage_collision,
+            pending_hits,
+        });
+        info!("Saved debug game state");
+        return;
+    }
+
+    let Some(checkpoint) = world.resource::<DebugSaveState>().checkpoint.clone() else {
+        warn!("No debug game state has been saved");
+        return;
+    };
+    if checkpoint.fighters.len() != roster.len()
+        || checkpoint
+            .fighters
+            .iter()
+            .zip(roster.iter())
+            .any(|(saved, current)| saved.entity != *current)
+    {
+        warn!("Saved debug game state belongs to another match");
+        return;
+    }
+
+    for saved in &checkpoint.fighters {
+        let Some(player) = world.entity(saved.entity).get::<Player>() else {
+            warn!("Could not restore the saved fighter state");
+            return;
+        };
+        if player.handle != saved.handle {
+            warn!("Saved debug game state belongs to another match");
+            return;
+        }
+
+        let mut entity = world.entity_mut(saved.entity);
+        entity.insert(saved.ecb);
+        entity.insert(saved.previous_ecb);
+        entity.insert(saved.velocity);
+        entity.insert(saved.translation);
+        entity.insert(saved.previous_translation);
+        entity.insert(saved.facing);
+        entity.insert(saved.previous_facing);
+        entity.insert(saved.animation);
+        entity.insert(saved.state.clone());
+        entity.insert(saved.input);
+        entity.insert(saved.damage);
+        entity.insert(saved.pending_hit_reaction.clone());
+        entity.insert(saved.hitstop);
+        entity.insert(saved.hitstop_shake);
+        entity.insert(saved.knockback_velocity);
+        entity.insert(saved.stale_moves.clone());
+        entity.insert(saved.hitboxes.clone());
+        entity.insert(saved.solved_hurtboxes.clone());
+        entity.insert(saved.bone_matrices.clone());
+        entity.insert(saved.surface);
+    }
+    world.insert_resource(checkpoint.pending_hits.clone());
+    world.insert_resource(checkpoint.stage_collision);
+    for mut match_camera in world.query::<&mut MatchCamera>().iter_mut(world) {
+        match_camera.needs_snap = true;
+    }
+    info!("Restored debug game state");
+}
+
+fn capture_fighter(world: &World, entity: Entity) -> Option<FighterCheckpoint> {
+    let fighter = world.entity(entity);
+    Some(FighterCheckpoint {
+        entity,
+        handle: fighter.get::<Player>()?.handle,
+        ecb: *fighter.get::<FighterECB>()?,
+        previous_ecb: *fighter.get::<crate::fighter::ecb::FighterPreviousECB>()?,
+        velocity: *fighter.get::<FighterVelocity>()?,
+        translation: *fighter.get::<FighterTranslation>()?,
+        previous_translation: *fighter.get::<FighterPreviousTranslation>()?,
+        facing: *fighter.get::<FighterFacingDirection>()?,
+        previous_facing: *fighter.get::<FighterPreviousFacingDirection>()?,
+        animation: *fighter.get::<FighterAnimationFrame>()?,
+        state: fighter.get::<FighterState>()?.clone(),
+        input: *fighter.get::<FighterInput>()?,
+        damage: *fighter.get::<FighterDamage>()?,
+        pending_hit_reaction: fighter.get::<FighterPendingHitReaction>()?.clone(),
+        hitstop: *fighter.get::<FighterHitstop>()?,
+        hitstop_shake: *fighter.get::<FighterHitstopShake>()?,
+        knockback_velocity: *fighter.get::<FighterKnockbackVelocity>()?,
+        stale_moves: fighter.get::<FighterStaleMoveQueue>()?.clone(),
+        hitboxes: fighter.get::<FighterHitboxes>()?.clone(),
+        solved_hurtboxes: fighter.get::<FighterSolvedHurtboxes>()?.clone(),
+        bone_matrices: fighter.get::<FighterBoneMatrices>()?.clone(),
+        surface: *fighter.get::<FighterSurfaceState>()?,
+    })
+}
+
+pub(super) fn clear(mut save_state: ResMut<DebugSaveState>) {
+    save_state.checkpoint = None;
+}
@@ -1,7 +1,7 @@
 use bevy::prelude::*;
 use strum_macros::EnumIter;

-use crate::fighter::{FighterFacingDirection, FighterVisual};
+use crate::fighter::{FighterFacingDirection, FighterHitstop, FighterVisual};

 /// The simulation-owned animation clock. Rendering may interpolate freely, but
 /// gameplay samples baked data only with this rollback-tracked value.
@@ -32,9 +32,13 @@ impl FighterAnimationFrame {
    }
 }

-pub fn advance_fighter_animation_frames(mut fighters: Query<&mut FighterAnimationFrame>) {
-    for mut animation in &mut fighters {
-        animation.advance();
+pub fn advance_fighter_animation_frames(
+    mut fighters: Query<(&mut FighterAnimationFrame, &FighterHitstop)>,
+) {
+    for (mut animation, hitstop) in &mut fighters {
+        if hitstop.remaining_frames == 0 {
+            animation.advance();
+        }
    }
 }

@@ -49,7 +53,6 @@ pub fn apply_animation(
    >,
 ) {
    for (mut trf, facing_direction, frame) in children {
-        // Melee model scale is in decimeters
        trf.rotation = Quat::IDENTITY;
        if let AnimKind::Turn = frame.kind {
            trf.rotate_local_y(
@@ -64,7 +67,7 @@ pub fn apply_animation(
 }

 #[derive(
-    Debug, Clone, Copy, PartialEq, Eq, Hash, serde::Deserialize, serde::Serialize, Reflect, EnumIter
+    Debug, Clone, Copy, PartialEq, Eq, Hash, serde::Deserialize, serde::Serialize, Reflect, EnumIter,
 )]
 pub enum AnimKind {
    Wait,
@@ -74,11 +77,19 @@ pub enum AnimKind {
    JumpSquat,
    JumpForward,
    JumpBack,
-    DoubleJump,
+    DoubleJumpForward,
+    DoubleJumpBack,
    Landing,
+    LandingSpecial,
    AirDodge,
    Fall,
    Turn,
+    CrouchEnter,
+    CrouchIdle,
+    CrouchExit,
+
+    FlinchGround,
+    FlinchAir,

    // Attacks
    AttackJab1,
@@ -1,346 +0,0 @@
-use std::collections::{HashMap, VecDeque};
-
-use bevy::prelude::*;
-use bevy_ggrs::prelude::GgrsSchedule;
-use serde::{Deserialize, Serialize};
-
-use crate::{
-    fighter::{
-        Fighter, FighterAttributes, FighterFacingDirection, FighterHitboxes, FighterTranslation, animation::{AnimKind, FighterAnimationFrame}, baked_animation::{FighterBoneMatrices, FixedMat4}, hurtbox::{FixedAffineCapsule, FixedCapsule}, manifest::FighterManifest,
-    }, math::{
-        int::{FGi32, FGi32Ext},
-        vec3::FGVec3,
-    }, schedule::GameplaySet, scripting::FighterAttackScript,
-};
-#[derive(Debug, Default, Clone, Serialize, Deserialize)]
-pub struct FighterDamage(FGi32);
-
-impl FighterDamage {
-    pub fn lit(text: &str) -> Self {
-        Self(FGi32::lit(text))
-    }
-}
-
-#[derive(Clone, Debug, Serialize, Deserialize)]
-pub enum KnockbackType {
-    Normal,
-    Fixed,
-}
-
-impl KnockbackType {
-    pub fn make_normal() -> Self {
-        Self::Normal
-    }
-
-    pub fn make_fixed() -> Self {
-        Self::Fixed
-    }
-}
-
-#[derive(Debug, Default, Clone, Serialize, Deserialize)]
-pub struct Knockback(FGi32);
-
-impl Knockback {
-    pub fn lit(val: &str) -> Self {
-        Self(FGi32::lit(val))
-    }
-}
-
-#[derive(Debug, Clone, Serialize, Deserialize)]
-pub enum AttackAngle {
-    Normal(FGi32),
-    Sakurai,
-}
-
-impl Default for AttackAngle {
-    fn default() -> Self {
-        AttackAngle::Normal(FGi32::lit("0"))
-    }
-}
-
-impl AttackAngle {
-    pub fn make_normal(angle: FGi32) -> Self {
-        Self::Normal(angle)
-    }
-
-    pub fn make_sakurai() -> Self {
-        Self::Sakurai
-    }
-}
-
-#[derive(Serialize, Deserialize, Reflect, PartialEq, Eq, Hash, Clone, Debug)]
-pub enum AttackKind {
-    NeutralAir,
-    ForwardAir,
-    BackAir,
-    DownAir,
-    UpAir,
-    Jab,
-    UpTilt,
-    DownTilt,
-    ForwardTilt,
-    UpSmash,
-    DownSmash,
-    ForwardSmash,
-}
-
-impl AttackKind {
-    pub fn get_animation(&self) -> AnimKind {
-        match self {
-            AttackKind::NeutralAir => AnimKind::AttackJab1,
-            AttackKind::Jab => AnimKind::AttackJab1,
-            AttackKind::UpTilt => AnimKind::AttackUpTilt,
-            AttackKind::ForwardAir => AnimKind::AttackUpTilt,
-            AttackKind::BackAir => AnimKind::AttackUpTilt,
-            AttackKind::DownAir => AnimKind::AttackUpTilt,
-            AttackKind::UpAir => AnimKind::AttackUpTilt,
-            AttackKind::DownTilt => AnimKind::AttackDownTilt,
-            AttackKind::ForwardTilt => AnimKind::AttackForwardTilt,
-            AttackKind::UpSmash => AnimKind::AttackUpTilt,
-            AttackKind::DownSmash => AnimKind::AttackUpTilt,
-            AttackKind::ForwardSmash => AnimKind::AttackUpTilt,
-        }
-    }
-}
-
-#[derive(Debug, Clone, Reflect, Serialize, Deserialize)]
-#[reflect(opaque)]
-pub struct AttackHitbox {
-    pub id: u32,
-    pub bone: String,
-    pub damage: FighterDamage,
-    pub offset: FGVec3,
-    pub radius: FGi32,
-    pub angle: AttackAngle,
-    pub knockback_type: KnockbackType,
-    pub knockback: Knockback,
-    pub knockback_growth: FGi32,
-    pub start_frame: u32,
-    pub end_frame: u32,
-}
-
-pub struct StaleMoveQueue(pub VecDeque<AttackKind>);
-
-impl AttackHitbox {
-    /// Knockback calculation
-    pub fn calculate_knockback(
-        &self,
-        attack: AttackKind,
-
-        receiver_attribs: &FighterAttributes,
-        receiver_damage: FighterDamage,
-        total_damage_received_this_frame: FighterDamage,
-        interrupted_smash_charge: bool,
-        receiver_crouching: bool,
-    ) -> Knockback {
-        /// Weight that produces a weight modifier of exactly 1.0. Weight-independent
-        /// attacks pass this value in place of the target's real weight.
-        const BASELINE_WEIGHT: FGi32 = FGi32::lit("100.0");
-
-        /// Applied to the weight-scaled damage term.
-        const KB_GAIN: FGi32 = FGi32::lit("1.4");
-
-        /// Constant floor added to the damage term before knockback growth scales it.
-        /// At 0% and 0 damage, knockback reduces to KB_OFFSET * s + b.
-        const KB_OFFSET: FGi32 = FGi32::lit("18.0");
-
-        /// Knockback growth is authored in percent (110 means 1.1x).
-        const KB_GROWTH_SCALE: FGi32 = FGi32::lit("0.01");
-        const DAMAGE_TERM_DIVISOR: FGi32 = FGi32::lit("20.0");
-        const DAMAGE_BONUS: FGi32 = FGi32::lit("2.0"); // effective damage floor in the damage term
-        const CHARGE_SMASH_INTERRUPTION_MODIFIER: FGi32 = FGi32::lit("1.2");
-        const CROUCH_CANCEL_MODIFIER: FGi32 = FGi32::lit("0.666667");
-
-        let attack_damage_unstalled = self.damage.0;
-
-        let modifier = {
-            let mut out = FGi32::ONE;
-            if interrupted_smash_charge {
-                out *= CHARGE_SMASH_INTERRUPTION_MODIFIER
-            } else if receiver_crouching {
-                out *= CROUCH_CANCEL_MODIFIER
-            }
-            out
-        };
-
-        let s = KB_GROWTH_SCALE * self.knockback_growth;
-        let p = receiver_damage.0.floor() + total_damage_received_this_frame.0;
-        let d = attack_damage_unstalled;
-        let damage_term = p / DAMAGE_TERM_DIVISOR * (d + DAMAGE_BONUS);
-
-        let scaled = damage_term * (FGi32::lit("2.0") * BASELINE_WEIGHT)
-            / (receiver_attribs.weight + BASELINE_WEIGHT);
-        let kb = (scaled * KB_GAIN + KB_OFFSET) * s + self.knockback.0;
-
-        Knockback(modifier * kb)
-    }
-}
-
-pub fn update_active_hitbox_list(script: &FighterAttackScript, list: &mut Vec<usize>, frame: u32) {
-    *list = script
-        .hitboxes
-        .iter()
-        .enumerate()
-        .filter(|(_, hb)| hb.start_frame <= frame && hb.end_frame > frame)
-        .map(|(i, _)| i)
-        .collect()
-}
-
-#[derive(Clone, Debug, PartialEq, Hash)]
-pub struct FighterSolvedHurtbox {
-    pub hurtbox_idx: usize,
-    pub capsule: FixedAffineCapsule,
-}
-
-#[derive(Clone, Debug, PartialEq, Hash)]
-pub struct FighterSolvedHitbox {
-    pub hitbox_idx: usize,
-    pub capsule: FixedCapsule,
-}
-
-#[derive(Component, Clone, Debug, Default, Hash)]
-pub struct FighterSolvedHitboxes(pub Vec<FighterSolvedHitbox>);
-
-pub fn solve_hitboxes(
-    mut query: Query<(
-        &FighterBoneMatrices,
-        &FighterTranslation,
-        &FighterFacingDirection,
-        &mut FighterHitboxes,
-        &FighterAnimationFrame
-    )>,
-    attack_scripts: Res<Assets<FighterAttackScript>>,
-) {
-    for (matrices, translation, facing_direction, mut hitboxes, animation_frame) in &mut query {
-        hitboxes.active_hitboxes_solved.clear();
-        if let Some(ref attack_script) = hitboxes.attack_script {
-            let attack_script = attack_scripts.get(attack_script).expect("Attack script should be valid");
-            let fighter_trf = translation.get_3d_transform(facing_direction);
-            let active_hitboxes = hitboxes.active_hitboxes.clone();
-            for hitbox_idx in active_hitboxes {
-                let hitbox = attack_script.hitboxes.get(hitbox_idx).expect("Hitbox IDX should be valid");
-                let matrices = matrices.get(&hitbox.bone);
-
-                if let None = matrices {
-                    warn!("Bone {} not found!", hitbox.bone);
-                    continue;
-                }
-
-                let (prev_bone_matrix, curr_bone_matrix) = matrices.unwrap();
-
-                let curr_hbox_matrix = fighter_trf.mul(curr_bone_matrix);
-                let curr_hbox_pos = curr_hbox_matrix.transform_point(hitbox.offset);
-
-                if hitbox.start_frame == animation_frame.frame {
-                    // Sphere only
-                    hitboxes.active_hitboxes_solved.push(
-                        FixedCapsule {
-                            start: curr_hbox_pos,
-                            end: curr_hbox_pos,
-                            radius: hitbox.radius
-                        }
-                    )
-                } else {
-                    let prev_hbox_matrix = fighter_trf.mul(prev_bone_matrix);
-                    let prev_hbox_pos = prev_hbox_matrix.transform_point(hitbox.offset);
-                    hitboxes.active_hitboxes_solved.push(
-                        FixedCapsule {
-                            start: prev_hbox_pos,
-                            end: curr_hbox_pos,
-                            radius: hitbox.radius
-                        }
-                    );
-                }
-            }
-        }
-    }
-}
-#[derive(Component)]
-pub struct FighterAttackScriptAssets {
-    pub scripts: HashMap<AttackKind, Handle<FighterAttackScript>>,
-}
-#[derive(Component, Clone, Debug, Default, Hash)]
-pub struct FighterSolvedHurtboxes(pub Vec<FighterSolvedHurtbox>);
-
-pub fn solve_hurtboxes(
-    mut query: Query<(
-        &FighterBoneMatrices,
-        &FighterTranslation,
-        &FighterFacingDirection,
-        &mut FighterSolvedHurtboxes,
-        &Fighter,
-    )>,
-    manifests: Res<Assets<FighterManifest>>,
-) {
-    for (matrices, translation, facing_direction, mut solved_hurtboxes, fighter) in &mut query {
-        let manifest = manifests
-            .get(&fighter.manifest)
-            .expect("Manifest should be valid");
-        let fighter_trf = translation.get_3d_transform(facing_direction);
-        solved_hurtboxes.0.clear();
-        for (hurtbox_idx, hurtbox) in manifest.hurtboxes.iter().enumerate() {
-            let bone_matrix = matrices.get_current(&hurtbox.bone);
-
-            if let Some(bone_matrix) = bone_matrix {
-                let to_global = fighter_trf.mul(bone_matrix);
-                let hurtbox_trf = FixedMat4::IDENTITY
-                    .with_rotation(FGVec3::new(
-                        hurtbox.rotation.x.to_radians(),
-                        hurtbox.rotation.y.to_radians(),
-                        hurtbox.rotation.z.to_radians(),
-                    ))
-                    .with_translation(hurtbox.offset);
-                solved_hurtboxes.0.push(FighterSolvedHurtbox {
-                    hurtbox_idx,
-                    capsule: FixedAffineCapsule::new(
-                        to_global.mul(hurtbox_trf),
-                        hurtbox.half_length,
-                        hurtbox.radius,
-                    ),
-                });
-            }
-        }
-    }
-}
-
-pub fn intersect_attacks_with_hurtboxes(query: Query<(Entity, &FighterSolvedHurtboxes, &FighterHitboxes)>, attack_scripts: Res<Assets<FighterAttackScript>>) {
-    /*for (entity_hurting, _, hitboxes) in query {
-        if hitboxes.attack_script.is_none() {
-            continue;
-        }
-
-        if let Some(ref attack_script) = hitboxes.attack_script {
-            let attack_script = attack_scripts.get(attack_script);
-
-            if attack_script.is_none() {
-                continue;
-            }
-
-            let attack_script = attack_script.unwrap();
-
-            let capsules: Vec<(&AttackHitbox, FixedCapsule)> = hitboxes.active_hitboxes.iter().map(|idx| {
-                (attack_script.hitboxes.get(*idx).unwrap(), )
-            }).collect();
-
-            for (entity_to_hurt, hurtboxes, _) in query {
-                // Self collisions not allowed
-                if entity_to_hurt == entity_hurting {
-                    continue;
-                }
-            }
-        }
-    }*/
-}
-
-pub struct FighterAttackPlugin;
-
-impl Plugin for FighterAttackPlugin {
-    fn build(&self, app: &mut App) {
-        app.add_systems(
-            GgrsSchedule,
-            (solve_hurtboxes, solve_hitboxes).chain()
-                .after(crate::fighter::baked_animation::update_fighter_bone_matrices)
-                .in_set(GameplaySet::Animation),
-        );
-    }
-}
@@ -0,0 +1,69 @@
+use fixed::traits::ToFixed;
+use fixed_math::SinCos;
+
+use crate::math::{
+    int::{FGWide, FGi32},
+    vec::FGVec2,
+};
+
+/// Applies DI to a given attack direction
+pub fn apply_directional_influence(
+    receiver_stick: FGVec2,
+    attack_angle: FGi32,
+    di_max_angle: FGi32,
+) -> FGVec2 {
+    let (sin, cos) = attack_angle.sin_cos();
+    let base_launch_direction = FGVec2::new(cos, sin);
+
+    let Some(base_launch_direction) = base_launch_direction.normalize() else {
+        return FGVec2::ZERO;
+    };
+
+    if receiver_stick.length_squared().is_zero() {
+        return base_launch_direction;
+    }
+
+    let normal = FGVec2::new(-base_launch_direction.y, base_launch_direction.x);
+    let di_amount = receiver_stick.dot(normal);
+    let angle_change = di_amount * di_max_angle.to_fixed::<FGWide>();
+    let angle_change = angle_change.clamp(
+        -di_max_angle.to_fixed::<FGWide>(),
+        di_max_angle.to_fixed::<FGWide>(),
+    );
+    let (sin, cos) = (attack_angle + angle_change.to_fixed::<FGi32>()).sin_cos();
+    FGVec2::new(cos, sin).normalize_or_zero()
+}
+
+#[cfg(test)]
+mod test {
+    use crate::{
+        fighter::attack::directional_influence::apply_directional_influence,
+        math::{int::FGi32, vec::FGVec2},
+    };
+
+    #[test]
+    fn di_zero_passes_unmodified() {
+        let di = apply_directional_influence(FGVec2::ZERO, FGi32::lit("0.0"), FGi32::lit("18.0"));
+        const EPSILON: FGi32 = FGi32::from_bits(4);
+        assert!(di.x.abs_diff(FGi32::ONE) < EPSILON);
+        assert!(di.y.abs_diff(FGi32::ZERO) < EPSILON);
+    }
+
+    #[test]
+    fn di_applies_on_the_correct_side() {
+        let di = apply_directional_influence(
+            FGVec2::lit("0.0", "1.0"),
+            FGi32::lit("0.0"),
+            FGi32::lit("18.0"),
+        );
+        assert!(di.x > FGi32::ZERO);
+        assert!(di.y > FGi32::ZERO);
+        let di = apply_directional_influence(
+            FGVec2::lit("0.0", "-1.0"),
+            FGi32::lit("0.0"),
+            FGi32::lit("18.0"),
+        );
+        assert!(di.x > FGi32::ZERO);
+        assert!(di.y < FGi32::ZERO);
+    }
+}
@@ -0,0 +1,611 @@
+use std::collections::{HashMap, VecDeque};
+
+mod reaction;
+pub mod directional_influence;
+
+use bevy::ecs::entity::{EntityMapper, MapEntities};
+use bevy::prelude::*;
+use bevy_ggrs::{Rollback, RollbackApp, prelude::GgrsSchedule};
+use serde::{Deserialize, Serialize};
+
+use crate::{
+    fighter::{
+        Fighter, FighterAttributes, FighterFacingDirection, FighterHitboxes,
+        FighterPreviousFacingDirection, FighterPreviousTranslation, FighterRoster,
+        FighterTranslation,
+        animation::{AnimKind, FighterAnimationFrame},
+        baked_animation::{FighterBoneIndexMap, FighterBoneMatrices, FixedMat4},
+        hurtbox::{FixedAffineCapsule, FixedCapsule},
+        manifest::FighterManifest,
+    },
+    game_settings::GameSettings,
+    math::{
+        int::{FGWide, FGi32, FGi32Ext},
+        vec::FGVec2,
+        vec3::FGVec3,
+    },
+    player::Player,
+    schedule::GameplaySet,
+    scripting::FighterAttackScript,
+};
+
+#[derive(Deref, Component, Default, Hash, Debug, Copy, Clone)]
+pub struct FighterKnockbackVelocity(pub FGVec2);
+
+#[derive(Debug, Default, Clone, Copy, Serialize, Deserialize, Component, Hash, PartialEq)]
+pub struct FighterDamage(FGi32);
+
+impl std::fmt::Display for FighterDamage {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{:.2}", self.0)
+    }
+}
+
+#[derive(Debug, Hash, Clone)]
+pub enum HitReactionKind {
+    Flinch,
+    Tumble,
+}
+
+#[derive(Debug, Hash, Clone)]
+pub struct FighterHitReaction {
+    pub launch_velocity: FGi32,
+    pub launch_angle: FGi32,
+    pub hitstop_frames: HitStop,
+    pub hitstun_frames: u32,
+    pub kind: HitReactionKind,
+    pub damage: FighterDamage,
+}
+
+#[derive(Component, DerefMut, Deref, Debug, Default, Hash, Clone)]
+pub struct FighterPendingHitReaction(pub Option<FighterHitReaction>);
+
+impl FighterDamage {
+    pub fn lit(text: &str) -> Self {
+        Self(FGi32::lit(text))
+    }
+}
+
+#[derive(Component)]
+pub struct FighterLastAttackDebug {
+    pub trajectory_points: Vec<Vec3>,
+}
+
+#[derive(Debug, Default, Clone, Deref, DerefMut, Hash, PartialEq, PartialOrd)]
+pub struct HitStop(u32);
+
+impl HitStop {
+    pub fn new(hitstop: u32) -> Self {
+        HitStop(hitstop)
+    }
+    pub fn calculate(attack_damage_stalled: FighterDamage, crouch_cancelling: bool) -> Self {
+        let a = (attack_damage_stalled.0 / FGi32::lit("3.0") + FGi32::lit("4.0")).round_to_zero();
+        let crouch_cancelling_factor = if crouch_cancelling {
+            FGi32::lit("0.66666666")
+        } else {
+            FGi32::ONE
+        };
+
+        let frames: u32 = ((a * crouch_cancelling_factor).round_to_zero()).to_num();
+
+        Self(frames)
+    }
+
+    pub fn calculate_shake_frames(&self, game_settings: &GameSettings) -> u32 {
+        (FGi32::from_num(self.0) * game_settings.fighter_common.visual_shake_frames_per_hitstop_frame).floor().to_num()
+    }
+}
+
+#[derive(Clone, Copy, Debug, Serialize, Deserialize)]
+pub enum KnockbackType {
+    Normal,
+    Fixed,
+}
+
+impl KnockbackType {
+    pub fn make_normal() -> Self {
+        Self::Normal
+    }
+
+    pub fn make_fixed() -> Self {
+        Self::Fixed
+    }
+}
+
+#[derive(Debug, Default, Clone, Serialize, Deserialize)]
+pub struct Knockback(FGi32);
+
+impl Knockback {
+    pub fn lit(val: &str) -> Self {
+        Self(FGi32::lit(val))
+    }
+
+    pub fn get_launch_speed(&self, game_settings: &GameSettings) -> FGi32 {
+        self.0
+            * game_settings
+                .fighter_common
+                .knockback_launch_velocity_multiplier
+    }
+
+    pub fn get_hitstun_frames(&self, game_settings: &GameSettings) -> u32 {
+        (self.0
+            * game_settings
+                .fighter_common
+                .hitstun_frames_per_unit_knockback)
+            .floor()
+            .to_num()
+    }
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub enum AttackAngle {
+    Normal(FGi32),
+    Sakurai,
+}
+
+impl Default for AttackAngle {
+    fn default() -> Self {
+        AttackAngle::Normal(FGi32::lit("0"))
+    }
+}
+
+impl AttackAngle {
+    pub fn make_normal(angle: FGi32) -> Self {
+        Self::Normal(angle)
+    }
+
+    pub fn make_sakurai() -> Self {
+        Self::Sakurai
+    }
+}
+
+#[derive(Serialize, Deserialize, Reflect, PartialEq, Eq, Hash, Clone, Debug, Default, Copy)]
+pub enum AttackKind {
+    #[default]
+    NeutralAir,
+    ForwardAir,
+    BackAir,
+    DownAir,
+    UpAir,
+    Jab,
+    UpTilt,
+    DownTilt,
+    ForwardTilt,
+    UpSmash,
+    DownSmash,
+    ForwardSmash,
+}
+
+impl AttackKind {
+    pub fn get_animation(&self) -> AnimKind {
+        match self {
+            AttackKind::NeutralAir => AnimKind::AttackJab1,
+            AttackKind::Jab => AnimKind::AttackJab1,
+            AttackKind::UpTilt => AnimKind::AttackUpTilt,
+            AttackKind::ForwardAir => AnimKind::AttackUpTilt,
+            AttackKind::BackAir => AnimKind::AttackUpTilt,
+            AttackKind::DownAir => AnimKind::AttackUpTilt,
+            AttackKind::UpAir => AnimKind::AttackUpTilt,
+            AttackKind::DownTilt => AnimKind::AttackDownTilt,
+            AttackKind::ForwardTilt => AnimKind::AttackForwardTilt,
+            AttackKind::UpSmash => AnimKind::AttackUpTilt,
+            AttackKind::DownSmash => AnimKind::AttackUpTilt,
+            AttackKind::ForwardSmash => AnimKind::AttackUpTilt,
+        }
+    }
+}
+
+#[derive(Debug, Clone, Reflect, Serialize, Deserialize)]
+#[reflect(opaque)]
+pub struct AttackHitbox {
+    pub id: u32,
+    pub bone: String,
+    pub damage: FighterDamage,
+    pub offset: FGVec3,
+    pub radius: FGi32,
+    pub angle: AttackAngle,
+    pub knockback_type: KnockbackType,
+    pub knockback: Knockback,
+    pub knockback_growth: FGi32,
+    pub start_frame: u32,
+    pub end_frame: u32,
+}
+
+const STALE_MOVE_QUEUE_COUNT: usize = 9;
+
+#[derive(Component, Hash, Clone, Default)]
+#[require(Rollback)]
+pub struct FighterStaleMoveQueue(VecDeque<AttackKind>);
+
+const STALENESS_REDUCTIONS: [FGi32; 9] = [
+    FGi32::lit("0.09"),
+    FGi32::lit("0.08"),
+    FGi32::lit("0.07"),
+    FGi32::lit("0.06"),
+    FGi32::lit("0.05"),
+    FGi32::lit("0.04"),
+    FGi32::lit("0.03"),
+    FGi32::lit("0.02"),
+    FGi32::lit("0.01"),
+];
+
+impl FighterStaleMoveQueue {
+    pub fn push(&mut self, attack: AttackKind) {
+        if self.0.len() == STALE_MOVE_QUEUE_COUNT {
+            self.0.pop_front();
+        }
+
+        self.0.push_back(attack);
+    }
+
+    pub fn get_attack_damage_multiplier(&self, attack: AttackKind) -> FGi32 {
+        FGi32::ONE
+            - self
+                .0
+                .iter()
+                .rev()
+                .enumerate()
+                .map(|(idx, kind)| {
+                    if *kind == attack {
+                        STALENESS_REDUCTIONS[idx]
+                    } else {
+                        FGi32::ZERO
+                    }
+                })
+                .sum::<FGi32>()
+                .min(FGi32::ONE)
+    }
+}
+
+impl AttackHitbox {
+    pub fn validate(&self) -> Result<(), String> {
+        if self.bone.trim().is_empty() {
+            return Err("bone name is empty".into());
+        }
+        if self.radius <= FGi32::ZERO {
+            return Err("radius must be positive".into());
+        }
+        if self.damage.0 < FGi32::ZERO {
+            return Err("damage must be non-negative".into());
+        }
+        if self.knockback.0 < FGi32::ZERO {
+            return Err("knockback must be non-negative".into());
+        }
+        if self.knockback_growth < FGi32::ZERO {
+            return Err("knockback growth must be non-negative".into());
+        }
+        if self.end_frame <= self.start_frame {
+            return Err("end frame must be greater than start frame".into());
+        }
+        Ok(())
+    }
+
+    /// Knockback calculation
+    pub fn calculate_knockback(
+        &self,
+        receiver_attribs: &FighterAttributes,
+        receiver_damage: FighterDamage,
+        total_damage_received_this_frame: FighterDamage,
+        interrupted_smash_charge: bool,
+        receiver_crouching: bool,
+    ) -> Knockback {
+        /// Weight that produces a weight modifier of exactly 1.0. Weight-independent
+        /// attacks pass this value in place of the target's real weight.
+        const BASELINE_WEIGHT: FGi32 = FGi32::lit("100.0");
+
+        /// Applied to the weight-scaled damage term.
+        const KB_GAIN: FGi32 = FGi32::lit("1.4");
+
+        /// Constant floor added to the damage term before knockback growth scales it.
+        /// At 0% and 0 damage, knockback reduces to KB_OFFSET * s + b.
+        const KB_OFFSET: FGi32 = FGi32::lit("18.0");
+
+        /// Knockback growth is authored in percent (110 means 1.1x).
+        const KB_GROWTH_SCALE: FGi32 = FGi32::lit("0.01");
+        const DAMAGE_TERM_DIVISOR: FGi32 = FGi32::lit("20.0");
+        const DAMAGE_BONUS: FGi32 = FGi32::lit("2.0"); // effective damage floor in the damage term
+        const CHARGE_SMASH_INTERRUPTION_MODIFIER: FGi32 = FGi32::lit("1.2");
+        const CROUCH_CANCEL_MODIFIER: FGi32 = FGi32::lit("0.666667");
+
+        let attack_damage_unstalled = self.damage.0;
+
+        let modifier = {
+            let mut out = FGi32::ONE;
+            if interrupted_smash_charge {
+                out *= CHARGE_SMASH_INTERRUPTION_MODIFIER
+            } else if receiver_crouching {
+                out *= CROUCH_CANCEL_MODIFIER
+            }
+            out
+        };
+
+        let kb = match self.knockback_type {
+            KnockbackType::Fixed => FGWide::from_num(self.knockback.0),
+            KnockbackType::Normal => {
+                let p = FGWide::from_num(receiver_damage.0.floor())
+                    + FGWide::from_num(total_damage_received_this_frame.0);
+                let d = FGWide::from_num(attack_damage_unstalled);
+                let s = FGWide::from_num(KB_GROWTH_SCALE * self.knockback_growth);
+                let damage_term = p / FGWide::from_num(DAMAGE_TERM_DIVISOR)
+                    * (d + FGWide::from_num(DAMAGE_BONUS));
+                let scaled = damage_term * FGWide::from_num(FGi32::lit("2.0") * BASELINE_WEIGHT)
+                    / FGWide::from_num(receiver_attribs.weight + BASELINE_WEIGHT);
+                (scaled * FGWide::from_num(KB_GAIN) + FGWide::from_num(KB_OFFSET)) * s
+                    + FGWide::from_num(self.knockback.0)
+            }
+        };
+
+        Knockback((FGWide::from_num(modifier) * kb).saturating_to_num())
+    }
+}
+
+pub fn update_active_hitbox_list(script: &FighterAttackScript, list: &mut Vec<usize>, frame: u32) {
+    list.clear();
+    list.extend(
+        script
+            .hitboxes
+            .iter()
+            .enumerate()
+            .filter(|(_, hb)| hb.start_frame <= frame && hb.end_frame > frame)
+            .map(|(i, _)| i),
+    );
+}
+
+#[derive(Clone, Debug, PartialEq, Hash)]
+pub struct FighterSolvedHurtbox {
+    pub hurtbox_idx: usize,
+    pub capsule: FixedAffineCapsule,
+}
+
+#[derive(Clone, Debug, PartialEq, Hash)]
+pub struct FighterSolvedHitbox {
+    pub hitbox_idx: usize,
+    pub capsule: FixedCapsule,
+}
+
+pub fn solve_hitboxes(
+    mut query: Query<(
+        &FighterBoneMatrices,
+        &FighterBoneIndexMap,
+        &FighterTranslation,
+        &FighterPreviousTranslation,
+        &FighterFacingDirection,
+        &FighterPreviousFacingDirection,
+        &mut FighterHitboxes,
+        &FighterAnimationFrame,
+    )>,
+    attack_scripts: Res<Assets<FighterAttackScript>>,
+) {
+    for (
+        matrices,
+        bone_indices,
+        translation,
+        previous_translation,
+        facing_direction,
+        previous_facing_direction,
+        mut hitboxes,
+        animation_frame,
+    ) in &mut query
+    {
+        let Some(active_attack) = hitboxes.0.as_mut() else {
+            continue;
+        };
+        active_attack.solved_hitboxes.clear();
+        let attack_script = attack_scripts
+            .get(&active_attack.script)
+            .expect("Attack script should be valid");
+        let fighter_trf = translation.get_3d_transform(facing_direction);
+        let previous_fighter_trf = FighterTranslation(previous_translation.0)
+            .get_3d_transform(&previous_facing_direction.0);
+        for hitbox_idx in active_attack.active_hitboxes.iter().copied() {
+            let hitbox = attack_script
+                .hitboxes
+                .get(hitbox_idx)
+                .expect("Hitbox IDX should be valid");
+            let matrices = bone_indices
+                .0
+                .get(&hitbox.bone)
+                .and_then(|index| matrices.get_index(*index));
+
+            if matrices.is_none() {
+                warn!("Bone {} not found!", hitbox.bone);
+                continue;
+            }
+
+            let (prev_bone_matrix, curr_bone_matrix) = matrices.unwrap();
+
+            let curr_hbox_matrix = fighter_trf.mul(curr_bone_matrix);
+            let curr_hbox_pos = curr_hbox_matrix.transform_point(hitbox.offset);
+
+            if hitbox.start_frame == animation_frame.frame {
+                // Sphere only
+                active_attack.solved_hitboxes.push(FighterSolvedHitbox {
+                    hitbox_idx,
+                    capsule: FixedCapsule {
+                        start: curr_hbox_pos,
+                        end: curr_hbox_pos,
+                        radius: hitbox.radius,
+                    },
+                })
+            } else {
+                let prev_hbox_matrix = previous_fighter_trf.mul(prev_bone_matrix);
+                let prev_hbox_pos = prev_hbox_matrix.transform_point(hitbox.offset);
+                active_attack.solved_hitboxes.push(FighterSolvedHitbox {
+                    hitbox_idx,
+                    capsule: FixedCapsule {
+                        start: prev_hbox_pos,
+                        end: curr_hbox_pos,
+                        radius: hitbox.radius,
+                    },
+                });
+            }
+        }
+    }
+}
+#[derive(Component)]
+pub struct FighterAttackScriptAssets {
+    pub scripts: HashMap<AttackKind, Handle<FighterAttackScript>>,
+}
+#[derive(Component, Clone, Debug, Default, Hash)]
+pub struct FighterSolvedHurtboxes(pub Vec<FighterSolvedHurtbox>);
+
+#[derive(Clone, Debug, Hash)]
+pub struct FighterHit {
+    pub attacker: Entity,
+    pub defender: Entity,
+    pub attack_script: Handle<FighterAttackScript>,
+    pub attack_kind: AttackKind,
+    pub hitbox_index: usize,
+}
+
+#[derive(Resource, Clone, Debug, Default, Hash)]
+pub struct FighterPendingHits(pub Vec<FighterHit>);
+
+impl MapEntities for FighterPendingHits {
+    fn map_entities<M: EntityMapper>(&mut self, entity_mapper: &mut M) {
+        for hit in &mut self.0 {
+            hit.attacker = entity_mapper.get_mapped(hit.attacker);
+            hit.defender = entity_mapper.get_mapped(hit.defender);
+        }
+    }
+}
+
+pub fn solve_hurtboxes(
+    mut query: Query<(
+        &FighterBoneMatrices,
+        &FighterBoneIndexMap,
+        &FighterTranslation,
+        &FighterFacingDirection,
+        &mut FighterSolvedHurtboxes,
+        &Fighter,
+    )>,
+    manifests: Res<Assets<FighterManifest>>,
+) {
+    for (matrices, bone_indices, translation, facing_direction, mut solved_hurtboxes, fighter) in
+        &mut query
+    {
+        let manifest = manifests
+            .get(&fighter.manifest)
+            .expect("Manifest should be valid");
+        let fighter_trf = translation.get_3d_transform(facing_direction);
+        solved_hurtboxes.0.clear();
+        for (hurtbox_idx, hurtbox) in manifest.hurtboxes.iter().enumerate() {
+            let bone_matrix = bone_indices
+                .0
+                .get(&hurtbox.bone)
+                .and_then(|index| matrices.get_current_index(*index));
+
+            if let Some(bone_matrix) = bone_matrix {
+                let to_global = fighter_trf.mul(bone_matrix);
+                let hurtbox_trf = FixedMat4::IDENTITY
+                    .with_rotation(FGVec3::new(
+                        hurtbox.rotation.x.to_radians(),
+                        hurtbox.rotation.y.to_radians(),
+                        hurtbox.rotation.z.to_radians(),
+                    ))
+                    .with_translation(hurtbox.offset);
+                solved_hurtboxes.0.push(FighterSolvedHurtbox {
+                    hurtbox_idx,
+                    capsule: FixedAffineCapsule::new(
+                        to_global.mul(hurtbox_trf),
+                        hurtbox.half_length,
+                        hurtbox.radius,
+                    ),
+                });
+            }
+        }
+    }
+}
+
+pub fn intersect_attacks_with_hurtboxes(
+    roster: Res<FighterRoster>,
+    mut query_attacker: Query<(
+        Entity,
+        &mut FighterHitboxes,
+        &Fighter,
+        &Player,
+        &FighterStaleMoveQueue,
+    )>,
+    query_attacked: Query<(Entity, &FighterSolvedHurtboxes)>,
+    mut pending_hits: ResMut<FighterPendingHits>,
+    attack_scripts: Res<Assets<FighterAttackScript>>,
+) {
+    pending_hits.0.clear();
+
+    for &entity_receiving in &roster.0 {
+        let Ok((_, hurtboxes)) = query_attacked.get(entity_receiving) else {
+            continue;
+        };
+
+        for &entity_hurting in &roster.0 {
+            if entity_hurting == entity_receiving {
+                continue;
+            }
+            let Ok((_, mut hitboxes, _, _, _)) = query_attacker.get_mut(entity_hurting) else {
+                continue;
+            };
+            let Some(active_attack) = hitboxes.0.as_mut() else {
+                continue;
+            };
+            if active_attack.hit_fighters.contains(&entity_receiving) {
+                continue;
+            }
+
+            let attack_script = attack_scripts
+                .get(&active_attack.script)
+                .expect("Attack script should be valid");
+
+            let mut hitting_hitbox_idx = None;
+            for hurtbox in hurtboxes.0.iter() {
+                for solved_hitbox in active_attack.solved_hitboxes.iter() {
+                    if hurtbox.capsule.intersects(solved_hitbox.capsule) {
+                        let candidate = solved_hitbox.hitbox_idx;
+                        if hitting_hitbox_idx.is_none_or(|current: usize| {
+                            attack_script.hitboxes[candidate].id
+                                < attack_script.hitboxes[current].id
+                        }) {
+                            hitting_hitbox_idx = Some(candidate);
+                        }
+                    }
+                }
+            }
+
+            let Some(hitting_hitbox_idx) = hitting_hitbox_idx else {
+                continue;
+            };
+
+            pending_hits.0.push(FighterHit {
+                attacker: entity_hurting,
+                defender: entity_receiving,
+                attack_script: active_attack.script.clone(),
+                attack_kind: active_attack.kind,
+                hitbox_index: hitting_hitbox_idx,
+            });
+            info!("Hit by hitbox {}!!!!", hitting_hitbox_idx);
+
+            active_attack.hit_fighters.push(entity_receiving);
+        }
+    }
+}
+
+pub struct FighterAttackPlugin;
+
+impl Plugin for FighterAttackPlugin {
+    fn build(&self, app: &mut App) {
+        app.init_resource::<FighterPendingHits>()
+            .add_plugins(reaction::FighterReactionPlugin)
+            .rollback_resource_with_clone::<FighterPendingHits>()
+            .update_resource_with_map_entities::<FighterPendingHits>()
+            .checksum_resource_with_hash::<FighterPendingHits>();
+        app.add_systems(
+            GgrsSchedule,
+            (
+                solve_hurtboxes,
+                solve_hitboxes,
+                intersect_attacks_with_hurtboxes,
+            )
+                .chain()
+                .in_set(GameplaySet::Attacks),
+        );
+    }
+}
@@ -0,0 +1,165 @@
+use bevy::prelude::*;
+use bevy_ggrs::prelude::GgrsSchedule;
+
+use super::*;
+use crate::{
+    fighter::{
+        Fighter, FighterFacingDirection, FighterHitboxes, FighterHitstop, FighterHitstopShake, FighterHitstopShakeKind, FighterHitstopShakeRole, FighterPendingHitReaction, FighterStaleMoveQueue, errors::FighterErrors, manifest::FighterManifest, state::FighterState,
+    }, game_settings::GameSettings, math::{int::FGi32}, player::Player, schedule::GameplaySet, scripting::FighterAttackScript,
+};
+
+pub fn resolve_fighter_hits(
+    mut pending_hits: ResMut<FighterPendingHits>,
+    mut attacker: Query<(
+        &mut FighterStaleMoveQueue,
+        &FighterFacingDirection,
+        &mut FighterHitboxes,
+        &Player,
+        &mut FighterHitstop,
+        &mut FighterHitstopShake,
+    )>,
+    mut receiver: Query<(&mut FighterDamage, &Fighter, &mut FighterPendingHitReaction, &FighterState)>,
+    attack_scripts: Res<Assets<FighterAttackScript>>,
+    game_settings: Res<GameSettings>,
+    fighter_manifests: Res<Assets<FighterManifest>>,
+) -> Result {
+    let hits = std::mem::take(&mut pending_hits.0);
+    let mut hit_offset = 0;
+
+    while hit_offset < hits.len() {
+        let defender = hits[hit_offset].defender;
+        let next_defender = hits[hit_offset..]
+            .iter()
+            .position(|hit| hit.defender != defender)
+            .map_or(hits.len(), |offset| hit_offset + offset);
+
+        let Ok((mut receiver_damage, fighter, mut pending_reaction, receiver_state)) = receiver.get_mut(defender)
+        else {
+            hit_offset = next_defender;
+            continue;
+        };
+
+        let damage_data = hits[hit_offset..next_defender]
+            .iter()
+            .filter_map(|hit| {
+                let Ok((stale_move_queue, facing_dir, _, player, _, _)) =
+                    attacker.get(hit.attacker)
+                else {
+                    return None;
+                };
+                let attack_script = attack_scripts.get(&hit.attack_script)?;
+                let hitbox = attack_script.hitboxes.get(hit.hitbox_index)?;
+                let damage_received = stale_move_queue
+                    .get_attack_damage_multiplier(hit.attack_kind)
+                    * hitbox.damage.0;
+                Some((
+                    hit.attacker,
+                    damage_received,
+                    hitbox,
+                    matches!(facing_dir, FighterFacingDirection::Left),
+                    player.handle,
+                ))
+            })
+            .collect::<Vec<_>>();
+
+        let total_damage_received_this_frame = damage_data
+            .iter()
+            .map(|(_, damage, ..)| damage)
+            .sum::<FGi32>();
+        let fighter_manifest = fighter_manifests
+            .get(&fighter.manifest)
+            .ok_or(FighterErrors::FighterManifestNotFound)?;
+        let mut reactions = Vec::with_capacity(damage_data.len());
+
+        for (attacker_entity, attack_damage, hitbox, facing_left, attacker_slot) in damage_data {
+            let knockback = hitbox.calculate_knockback(
+                &fighter_manifest.attributes,
+                *receiver_damage,
+                FighterDamage(total_damage_received_this_frame),
+                false,
+                false,
+            );
+            let angle = match &hitbox.angle {
+                AttackAngle::Normal(angle) => *angle,
+                AttackAngle::Sakurai => FGi32::lit("32.0"),
+            };
+            let launch_angle = if facing_left {
+                FGi32::lit("180.0") - angle
+            } else {
+                angle
+            };
+
+            // Attacker hitstop and data
+            let hitstop = HitStop::calculate(FighterDamage(attack_damage), false);
+            reactions.push((
+                attacker_entity,
+                attacker_slot,
+                FighterHitReaction {
+                    launch_velocity: knockback.get_launch_speed(&game_settings),
+                    launch_angle,
+                    hitstun_frames: knockback.get_hitstun_frames(&game_settings),
+                    hitstop_frames: hitstop,
+                    kind: HitReactionKind::Flinch,
+                    damage: FighterDamage(attack_damage)
+                },
+            ));
+        }
+
+        receiver_damage.0 += total_damage_received_this_frame;
+
+        for (attacker_entity, _, reaction) in &reactions {
+            let Ok((.., _, mut hitstop, mut hitstop_shake)) = attacker.get_mut(*attacker_entity) else {
+                continue;
+            };
+
+            if hitstop.remaining_frames < reaction.hitstop_frames.0 {
+                let shake_kind = if receiver_state.is_visually_grounded() {
+                    FighterHitstopShakeKind::Horizontal
+                } else {
+                    FighterHitstopShakeKind::Vertical
+                };
+                hitstop.remaining_frames = reaction.hitstop_frames.0;
+                let shake_frames = reaction.hitstop_frames.calculate_shake_frames(&game_settings);
+                hitstop_shake.total_frames = shake_frames;
+                hitstop_shake.remaining_frames = shake_frames;
+                hitstop_shake.kind = shake_kind;
+                hitstop_shake.role = FighterHitstopShakeRole::Attacker;
+            }
+        }
+
+        pending_reaction.0 = reactions
+            .into_iter()
+            .min_by(|(_, port_a, _), (_, port_b, _)| port_a.cmp(port_b))
+            .map(|(_, _, reaction)| reaction);
+
+        hit_offset = next_defender;
+    }
+
+    for hit in hits {
+        let Ok((mut stale_move_queue, _facing_direction, mut hitboxes, ..)) = attacker.get_mut(hit.attacker) else {
+            continue;
+        };
+
+        if let Some(ref mut hitbox) = hitboxes.0 {
+            if !hitbox.stalled {
+                hitbox.stalled = true;
+                stale_move_queue.push(hitbox.kind);
+            }
+        }
+    }
+
+    Ok(())
+}
+
+pub struct FighterReactionPlugin;
+
+impl Plugin for FighterReactionPlugin {
+    fn build(&self, app: &mut App) {
+        app.add_systems(
+            GgrsSchedule,
+            resolve_fighter_hits
+                .in_set(GameplaySet::Attacks)
+                .after(super::intersect_attacks_with_hurtboxes),
+        );
+    }
+}
@@ -32,10 +32,12 @@ pub struct FighterAttributes {
    pub air_acceleration_base: FGi32,
    pub air_acceleration_stick: FGi32,
    pub max_air_horizontal_velocity: FGi32,
+    pub air_drift_max: FGi32,

    pub ground_friction: FGi32,
    pub terminal_velocity: FGi32,
    pub gravity: FGi32,
+    pub fast_fall_speed: FGi32,
    pub weight: FGi32,
    pub air_friction: FGi32,

@@ -45,6 +47,13 @@ pub struct FighterAttributes {
 }

 impl FighterAttributes {
+    pub fn validate(&self) -> Result<(), String> {
+        if self.weight <= FGi32::ZERO {
+            return Err("weight must be positive".into());
+        }
+        Ok(())
+    }
+
    pub fn get_accel_and_target_dashrun(
        &self,
        input: &FighterInputFrame,
@@ -1,996 +0,0 @@
-//! Deterministic, fighter-local skeletal animation samples for gameplay and rendering.
-
-use std::{
-    collections::{HashMap, HashSet},
-    io,
-    path::Path,
-};
-
-use bevy::{
-    asset::{
-        AssetLoader, AssetPath, AsyncWriteExt, LoadContext,
-        io::{Reader, Writer},
-        processor::LoadTransformAndSave,
-        saver::{AssetSaver, SavedAsset},
-        transformer::{AssetTransformer, TransformedAsset},
-    },
-    prelude::*,
-    reflect::TypePath,
-    world_serialization::{WorldInstanceReady, WorldInstanceSpawner},
-};
-use bevy_ggrs::prelude::GgrsSchedule;
-use serde::{Deserialize, Serialize};
-
-use crate::{
-    fighter::{
-        animation::{AnimKind, FighterAnimationFrame},
-        manifest::FighterManifest,
-        visual::FighterAnimations,
-    },
-    math::{
-        int::{FGWide, FGi32, FGi32Ext},
-        vec3::FGVec3,
-    },
-    schedule::GameplaySet,
-};
-
-pub const BAKED_ANIMATION_FPS: u32 = 60;
-
-/// Parent transforms are composed after
-/// quantization, which makes every runtime sample platform-independent.
-#[derive(Clone, Copy, Debug, PartialEq, Eq, Serialize, Deserialize, Hash)]
-pub struct FixedMat4 {
-    pub cols: [[FGi32; 4]; 4],
-}
-
-impl FixedMat4 {
-    pub const IDENTITY: Self = Self {
-        cols: [
-            [FGi32::ONE, FGi32::ZERO, FGi32::ZERO, FGi32::ZERO],
-            [FGi32::ZERO, FGi32::ONE, FGi32::ZERO, FGi32::ZERO],
-            [FGi32::ZERO, FGi32::ZERO, FGi32::ONE, FGi32::ZERO],
-            [FGi32::ZERO, FGi32::ZERO, FGi32::ZERO, FGi32::ONE],
-        ],
-    };
-    fn from_mat4(matrix: Mat4) -> io::Result<Self> {
-        let values = matrix.to_cols_array();
-        let mut cols = [[FGi32::ZERO; 4]; 4];
-        for (index, value) in values.into_iter().enumerate() {
-            cols[index / 4][index % 4] = FGi32::checked_from_num(value).ok_or_else(|| {
-                io::Error::new(
-                    io::ErrorKind::InvalidData,
-                    "animation transform overflows Q16.16",
-                )
-            })?;
-        }
-        Ok(Self { cols })
-    }
-
-    pub fn to_mat4(self) -> Mat4 {
-        Mat4::from_cols_array_2d(&self.cols.map(|column| column.map(|value| value.to_num())))
-    }
-
-    pub fn mul(self, rhs: Self) -> Self {
-        let mut cols = [[FGi32::ZERO; 4]; 4];
-        for column in 0..4 {
-            for row in 0..4 {
-                let mut value = FGWide::ZERO;
-                for k in 0..4 {
-                    value +=
-                        FGWide::from_num(self.cols[k][row]) * FGWide::from_num(rhs.cols[column][k]);
-                }
-                cols[column][row] = FGi32::from_num(value);
-            }
-        }
-        Self { cols }
-    }
-
-    pub fn transform_point(self, point: FGVec3) -> FGVec3 {
-        let input = [point.x, point.y, point.z, FGi32::ONE];
-        let mut output = [FGi32::ZERO; 3];
-        for row in 0..3 {
-            let mut value = FGWide::ZERO;
-            for (column, input) in input.into_iter().enumerate() {
-                value += FGWide::from_num(self.cols[column][row]) * FGWide::from_num(input);
-            }
-            output[row] = FGi32::from_num(value);
-        }
-        FGVec3 {
-            x: output[0],
-            y: output[1],
-            z: output[2],
-        }
-    }
-
-    pub fn translate(&mut self, translation: FGVec3) {
-        self.cols[3][0] = translation.x;
-        self.cols[3][1] = translation.y;
-        self.cols[3][2] = translation.z;
-    }
-
-    pub fn with_translation(mut self, translation: FGVec3) -> Self {
-        self.translate(translation);
-        self
-    }
-
-    /// Replaces the rotation with XYZ Euler angles expressed in radians.
-    pub fn with_rotation(mut self, rotation: FGVec3) -> Self {
-        let (sin_x, cos_x) = rotation.x.sin_cos();
-        let (sin_y, cos_y) = rotation.y.sin_cos();
-        let (sin_z, cos_z) = rotation.z.sin_cos();
-        self.cols[0][0] = cos_y * cos_z;
-        self.cols[0][1] = cos_x * sin_z + sin_x * sin_y * cos_z;
-        self.cols[0][2] = sin_x * sin_z - cos_x * sin_y * cos_z;
-        self.cols[1][0] = -cos_y * sin_z;
-        self.cols[1][1] = cos_x * cos_z - sin_x * sin_y * sin_z;
-        self.cols[1][2] = sin_x * cos_z + cos_x * sin_y * sin_z;
-        self.cols[2][0] = sin_y;
-        self.cols[2][1] = -sin_x * cos_y;
-        self.cols[2][2] = cos_x * cos_y;
-        self
-    }
-
-    pub fn get_translation(&self) -> FGVec3 {
-        FGVec3::new(self.cols[3][0], self.cols[3][1], self.cols[3][2])
-    }
-
-    pub fn rotate_y(self, quarter_turns: u8) -> Self {
-        let rotation = match quarter_turns % 4 {
-            0 => Self {
-                cols: [
-                    [FGi32::ONE, FGi32::ZERO, FGi32::ZERO, FGi32::ZERO],
-                    [FGi32::ZERO, FGi32::ONE, FGi32::ZERO, FGi32::ZERO],
-                    [FGi32::ZERO, FGi32::ZERO, FGi32::ONE, FGi32::ZERO],
-                    [FGi32::ZERO, FGi32::ZERO, FGi32::ZERO, FGi32::ONE],
-                ],
-            },
-            1 => Self {
-                cols: [
-                    [FGi32::ZERO, FGi32::ZERO, FGi32::NEG_ONE, FGi32::ZERO],
-                    [FGi32::ZERO, FGi32::ONE, FGi32::ZERO, FGi32::ZERO],
-                    [FGi32::ONE, FGi32::ZERO, FGi32::ZERO, FGi32::ZERO],
-                    [FGi32::ZERO, FGi32::ZERO, FGi32::ZERO, FGi32::ONE],
-                ],
-            },
-            2 => Self {
-                cols: [
-                    [FGi32::NEG_ONE, FGi32::ZERO, FGi32::ZERO, FGi32::ZERO],
-                    [FGi32::ZERO, FGi32::ONE, FGi32::ZERO, FGi32::ZERO],
-                    [FGi32::ZERO, FGi32::ZERO, FGi32::NEG_ONE, FGi32::ZERO],
-                    [FGi32::ZERO, FGi32::ZERO, FGi32::ZERO, FGi32::ONE],
-                ],
-            },
-            _ => Self {
-                cols: [
-                    [FGi32::ZERO, FGi32::ZERO, FGi32::ONE, FGi32::ZERO],
-                    [FGi32::ZERO, FGi32::ONE, FGi32::ZERO, FGi32::ZERO],
-                    [FGi32::NEG_ONE, FGi32::ZERO, FGi32::ZERO, FGi32::ZERO],
-                    [FGi32::ZERO, FGi32::ZERO, FGi32::ZERO, FGi32::ONE],
-                ],
-            },
-        };
-        self.mul(rotation)
-    }
-}
-
-#[derive(Clone, Debug, Serialize, Deserialize)]
-pub struct BakedAnimationClip {
-    /// One parent-relative matrix per stored node, for each 60 Hz simulation frame.
-    pub frames: Vec<Vec<FixedMat4>>,
-}
-
-#[derive(Asset, TypePath, Clone, Debug, Serialize, Deserialize)]
-pub struct BakedFighterAnimations {
-    pub frame_rate: u32,
-    /// Indexed exactly like every frame in each clip.
-    pub bone_names: Vec<String>,
-    /// Parent node for each stored node, indexed like `bone_names`.
-    pub parents: Vec<Option<usize>>,
-    clips: Vec<BakedAnimationClip>,
-    clip_indices: HashMap<AnimKind, usize>,
-}
-
-impl BakedFighterAnimations {
-    pub fn sample_pose(&self, frame: &FighterAnimationFrame) -> Option<&[FixedMat4]> {
-        let frames = &self.clip(frame.kind)?.frames;
-        let frame_index = if frame.repeat {
-            frame.frame % frames.len() as u32
-        } else {
-            frame.frame
-        };
-        frames
-            .get(frame_index as usize)
-            .or_else(|| frames.last())
-            .map(Vec::as_slice)
-    }
-
-    pub fn frame_count(&self, kind: AnimKind) -> Option<u32> {
-        self.clip(kind).map(|clip| clip.frames.len() as u32)
-    }
-
-    fn clip(&self, kind: AnimKind) -> Option<&BakedAnimationClip> {
-        self.clip_indices
-            .get(&kind)
-            .and_then(|index| self.clips.get(*index))
-    }
-}
-
-/// The current baked model-space pose for a fighter, recalculated every
-/// rollback frame from its animation clock and immutable baked asset.
-#[derive(Component, Clone, Debug, Default)]
-pub struct FighterBoneMatrices {
-    bone_names: Vec<String>,
-    parents: Vec<Option<usize>>,
-    matrices: Vec<FixedMat4>,
-    previous_frame_matrices: Vec<FixedMat4>,
-    local_matrices: Vec<FixedMat4>,
-}
-
-#[derive(Component)]
-struct BakedFighterBone {
-    fighter: Entity,
-    index: usize,
-}
-
-impl FighterBoneMatrices {
-    pub fn get(&self, bone: &str) -> Option<(FixedMat4, FixedMat4)> {
-        let index = self.bone_names.iter().position(|name| name == bone)?;
-        let curr = self.matrices.get(index).copied();
-        let prev = self.previous_frame_matrices.get(index).copied();
-
-        if let Some(prev) = prev {
-            if let Some(curr) = curr {
-                return Some((prev, curr));
-            }
-        }
-
-        None
-    }
-
-    pub fn get_current(&self, bone: &str) -> Option<FixedMat4> {
-        let index = self.bone_names.iter().position(|name| name == bone)?;
-        self.matrices.get(index).copied()
-    }
-
-    pub fn iter(&self) -> impl Iterator<Item = (&str, FixedMat4)> {
-        self.bone_names
-            .iter()
-            .map(String::as_str)
-            .zip(self.matrices.iter().copied())
-    }
-
-    pub fn local(&self, index: usize) -> Option<FixedMat4> {
-        self.local_matrices.get(index).copied()
-    }
-
-    fn set_pose(&mut self, bone_names: &[String], parents: &[Option<usize>], local: &[FixedMat4]) {
-        assert_eq!(
-            bone_names.len(),
-            local.len(),
-            "baked animation pose does not match its bone names"
-        );
-        assert_eq!(
-            bone_names.len(),
-            parents.len(),
-            "baked bone parents do not match names"
-        );
-        if self.bone_names.is_empty() {
-            self.bone_names.extend_from_slice(bone_names);
-            self.parents.extend_from_slice(parents);
-        } else {
-            assert_eq!(self.bone_names, bone_names, "baked bone names changed");
-            assert_eq!(self.parents, parents, "baked bone parents changed");
-        }
-        std::mem::swap(&mut self.matrices, &mut self.previous_frame_matrices);
-        self.local_matrices.clear();
-        self.local_matrices.extend_from_slice(local);
-        let mut model = vec![None; local.len()];
-        for index in 0..local.len() {
-            resolve_model_transform(index, parents, local, &mut model)
-                .expect("baked bone hierarchy should be valid");
-        }
-        self.matrices = model
-            .into_iter()
-            .map(|matrix| matrix.expect("baked bone hierarchy should be valid"))
-            .collect();
-    }
-}
-
-pub fn update_fighter_bone_matrices(
-    mut fighters: Query<(
-        &FighterAnimationFrame,
-        &FighterAnimations,
-        &mut FighterBoneMatrices,
-    )>,
-    baked_assets: Res<Assets<BakedFighterAnimations>>,
-) {
-    for (frame, animations, mut matrices) in &mut fighters {
-        let baked = baked_assets
-            .get(&animations.baked)
-            .expect("fighter baked animation asset should be loaded before the match starts");
-        let pose = baked
-            .sample_pose(frame)
-            .expect("fighter animation frame should select a baked pose");
-        matrices.set_pose(&baked.bone_names, &baked.parents, pose);
-    }
-}
-
-fn bind_fighter_visual_bones(
-    ready: On<WorldInstanceReady>,
-    mut commands: Commands,
-    spawner: Res<WorldInstanceSpawner>,
-    fighters: Query<&FighterAnimations>,
-    baked_assets: Res<Assets<BakedFighterAnimations>>,
-    nodes: Query<(&Name, Option<&ChildOf>)>,
-    animation_players: Query<(), With<AnimationPlayer>>,
-) {
-    let fighter = ready.entity;
-    let Ok(animations) = fighters.get(fighter) else {
-        return;
-    };
-    let baked = baked_assets
-        .get(&animations.baked)
-        .expect("fighter baked animation asset should be loaded before its visual scene");
-    let entities = spawner
-        .iter_instance_entities(ready.instance_id)
-        .collect::<HashSet<_>>();
-    for &entity in &entities {
-        if animation_players.contains(entity) {
-            commands.entity(entity).remove::<AnimationPlayer>();
-        }
-    }
-    let mut indices = HashMap::with_capacity(baked.bone_names.len());
-    for (index, name) in baked.bone_names.iter().enumerate() {
-        let key = (baked.parents[index], name.as_str());
-        assert!(
-            indices.insert(key, index).is_none(),
-            "fighter GLTF has duplicate node names under the same parent"
-        );
-    }
-
-    let mut assigned = HashMap::new();
-    let mut remaining = entities.iter().copied().collect::<Vec<_>>();
-    while !remaining.is_empty() {
-        let mut next = Vec::new();
-        let mut progress = false;
-        for entity in remaining {
-            let Ok((name, parent)) = nodes.get(entity) else {
-                continue;
-            };
-            let parent = parent.map(ChildOf::parent);
-            let parent_index = match parent {
-                Some(parent) if entities.contains(&parent) => {
-                    if let Some(index) = assigned.get(&parent) {
-                        Some(*index)
-                    } else if nodes.get(parent).ok().is_some_and(|(name, _)| {
-                        baked.bone_names.iter().any(|bone| bone == name.as_str())
-                    }) {
-                        next.push(entity);
-                        continue;
-                    } else {
-                        // WorldAsset adds an unnamed instance root above the GLTF scene roots.
-                        None
-                    }
-                }
-                _ => None,
-            };
-            if let Some(&index) = indices.get(&(parent_index, name.as_str())) {
-                assigned.insert(entity, index);
-                progress = true;
-            }
-        }
-        if !progress {
-            break;
-        }
-        remaining = next;
-    }
-
-    if assigned.len() != baked.bone_names.len() {
-        warn!(
-            fighter = ?fighter,
-            bound = assigned.len(),
-            expected = baked.bone_names.len(),
-            "could not bind every baked fighter node to its visual scene"
-        );
-    }
-    for (entity, index) in assigned {
-        commands
-            .entity(entity)
-            .insert(BakedFighterBone { fighter, index });
-    }
-}
-
-fn apply_baked_fighter_visual_pose(
-    mut nodes: Query<(&mut Transform, &BakedFighterBone)>,
-    fighters: Query<&FighterBoneMatrices>,
-) {
-    for (mut transform, bone) in &mut nodes {
-        let Ok(matrices) = fighters.get(bone.fighter) else {
-            continue;
-        };
-        let Some(local) = matrices.local(bone.index) else {
-            continue;
-        };
-        *transform = Transform::from_matrix(local.to_mat4());
-    }
-}
-
-#[derive(Deserialize)]
-struct FighterBakeDeclaration {
-    manifest_path: String,
-}
-
-#[derive(Asset, TypePath)]
-struct FighterBakeSource {
-    model_bytes: Vec<u8>,
-    animations: HashMap<AnimKind, String>,
-}
-
-#[derive(Default, TypePath)]
-struct FighterBakeSourceLoader;
-
-impl AssetLoader for FighterBakeSourceLoader {
-    type Asset = FighterBakeSource;
-    type Settings = ();
-    type Error = io::Error;
-
-    async fn load(
-        &self,
-        reader: &mut dyn Reader,
-        _: &Self::Settings,
-        load_context: &mut LoadContext<'_>,
-    ) -> Result<Self::Asset, Self::Error> {
-        let mut declaration = Vec::new();
-        reader.read_to_end(&mut declaration).await?;
-        let declaration: FighterBakeDeclaration = ron::de::from_bytes(&declaration)
-            .map_err(|error| io::Error::new(io::ErrorKind::InvalidData, error))?;
-
-        let manifest_bytes = load_context
-            .read_asset_bytes(&declaration.manifest_path)
-            .await
-            .map_err(|error| io::Error::other(error.to_string()))?;
-        let manifest: FighterManifest = ron::de::from_bytes(&manifest_bytes)
-            .map_err(|error| io::Error::new(io::ErrorKind::InvalidData, error))?;
-
-        // The processor's AssetServer reads processed assets. Reading this
-        // source dependency through it would wait for a processed GLB while
-        // this processor is still producing the first processed asset.
-        let model_bytes = std::fs::read(Path::new("assets").join(&manifest.model_path))?;
-        Ok(FighterBakeSource {
-            model_bytes,
-            animations: manifest.animations,
-        })
-    }
-
-    fn extensions(&self) -> &[&str] {
-        &["fighterbake"]
-    }
-}
-
-#[derive(Default, TypePath)]
-struct BakedFighterAnimationsLoader;
-
-impl AssetLoader for BakedFighterAnimationsLoader {
-    type Asset = BakedFighterAnimations;
-    type Settings = ();
-    type Error = io::Error;
-
-    async fn load(
-        &self,
-        reader: &mut dyn Reader,
-        _: &Self::Settings,
-        _: &mut LoadContext<'_>,
-    ) -> Result<Self::Asset, Self::Error> {
-        let mut bytes = Vec::new();
-        reader.read_to_end(&mut bytes).await?;
-        bincode::deserialize(&bytes)
-            .map_err(|error| io::Error::new(io::ErrorKind::InvalidData, error))
-    }
-
-    fn extensions(&self) -> &[&str] {
-        &["fighterbake"]
-    }
-}
-
-#[derive(Default, TypePath)]
-struct FighterBakeTransformer;
-
-impl AssetTransformer for FighterBakeTransformer {
-    type AssetInput = FighterBakeSource;
-    type AssetOutput = BakedFighterAnimations;
-    type Settings = ();
-    type Error = io::Error;
-
-    async fn transform<'a>(
-        &'a self,
-        source: TransformedAsset<Self::AssetInput>,
-        _: &'a Self::Settings,
-    ) -> Result<TransformedAsset<Self::AssetOutput>, Self::Error> {
-        let baked = bake_gltf(&source.model_bytes, &source.animations)?;
-        Ok(source.replace_asset(baked))
-    }
-}
-
-#[derive(Default, TypePath)]
-struct BakedFighterAnimationsSaver;
-
-impl AssetSaver for BakedFighterAnimationsSaver {
-    type Asset = BakedFighterAnimations;
-    type Settings = ();
-    type OutputLoader = BakedFighterAnimationsLoader;
-    type Error = io::Error;
-
-    async fn save(
-        &self,
-        writer: &mut Writer,
-        asset: SavedAsset<'_, '_, Self::Asset>,
-        _: &Self::Settings,
-        _: AssetPath<'_>,
-    ) -> Result<(), Self::Error> {
-        let bytes = bincode::serialize(&*asset)
-            .map_err(|error| io::Error::new(io::ErrorKind::InvalidData, error))?;
-        writer.write_all(&bytes).await
-    }
-}
-
-type FighterBakeProcessor = LoadTransformAndSave<
-    FighterBakeSourceLoader,
-    FighterBakeTransformer,
-    BakedFighterAnimationsSaver,
->;
-
-pub struct BakedAnimationPlugin;
-
-impl Plugin for BakedAnimationPlugin {
-    fn build(&self, app: &mut App) {
-        app.init_asset::<BakedFighterAnimations>()
-            .register_asset_loader(FighterBakeSourceLoader)
-            .register_asset_loader(BakedFighterAnimationsLoader)
-            .register_asset_processor(FighterBakeProcessor::new(
-                FighterBakeTransformer,
-                BakedFighterAnimationsSaver,
-            ))
-            .set_default_asset_processor::<FighterBakeProcessor>("fighterbake")
-            .add_systems(
-                GgrsSchedule,
-                update_fighter_bone_matrices.in_set(GameplaySet::Animation),
-            )
-            .add_systems(Update, apply_baked_fighter_visual_pose)
-            .add_observer(bind_fighter_visual_bones);
-    }
-}
-
-fn bake_gltf(
-    bytes: &[u8],
-    animations: &HashMap<AnimKind, String>,
-) -> io::Result<BakedFighterAnimations> {
-    let (document, buffers, _) = gltf::import_slice(bytes)
-        .map_err(|error| io::Error::new(io::ErrorKind::InvalidData, error))?;
-    let nodes: Vec<_> = document.nodes().collect();
-    if nodes.is_empty() {
-        return Err(io::Error::new(
-            io::ErrorKind::InvalidData,
-            "fighter model has no nodes",
-        ));
-    }
-    let mut parents = vec![None; nodes.len()];
-    for node in &nodes {
-        for child in node.children() {
-            parents[child.index()] = Some(node.index());
-        }
-    }
-    let names = nodes
-        .iter()
-        .map(|node| {
-            node.name().map(str::to_owned).ok_or_else(|| {
-                io::Error::new(
-                    io::ErrorKind::InvalidData,
-                    format!("node {} has no name", node.index()),
-                )
-            })
-        })
-        .collect::<io::Result<Vec<_>>>()?;
-
-    let mut pending = HashMap::<&str, Vec<AnimKind>>::new();
-    for (kind, name) in animations {
-        pending.entry(name).or_default().push(*kind);
-    }
-
-    let mut clips = Vec::with_capacity(pending.len());
-    let mut clip_indices = HashMap::with_capacity(animations.len());
-    for animation in document.animations() {
-        let name = animation.name().ok_or_else(|| {
-            io::Error::new(
-                io::ErrorKind::InvalidData,
-                format!("animation {} has no name", animation.index()),
-            )
-        })?;
-        let Some(kinds) = pending.remove(name) else {
-            continue;
-        };
-        let channels = animation
-            .channels()
-            .map(|channel| read_channel(channel, &buffers))
-            .collect::<io::Result<Vec<_>>>()?;
-        let duration = channels
-            .iter()
-            .filter_map(Channel::duration)
-            .fold(0.0_f32, f32::max);
-        let frame_count = (duration * BAKED_ANIMATION_FPS as f32).ceil() as usize + 1;
-        let mut frames = Vec::with_capacity(frame_count);
-        for frame in 0..frame_count {
-            let time = frame as f32 / BAKED_ANIMATION_FPS as f32;
-            let local = nodes
-                .iter()
-                .map(|node| local_transform(node.clone(), &channels, time))
-                .collect::<io::Result<Vec<_>>>()?;
-            frames.push(local);
-        }
-        let index = clips.len();
-        clips.push(BakedAnimationClip { frames });
-        for kind in kinds {
-            clip_indices.insert(kind, index);
-        }
-    }
-    if clips.is_empty() {
-        return Err(io::Error::new(
-            io::ErrorKind::InvalidData,
-            "fighter model has no animations",
-        ));
-    }
-    if !pending.is_empty() {
-        let mut missing = pending.keys().copied().collect::<Vec<_>>();
-        missing.sort_unstable();
-        return Err(io::Error::new(
-            io::ErrorKind::InvalidData,
-            format!(
-                "fighter model has no animations named {}",
-                missing.join(", ")
-            ),
-        ));
-    }
-    Ok(BakedFighterAnimations {
-        frame_rate: BAKED_ANIMATION_FPS,
-        bone_names: names,
-        parents,
-        clips,
-        clip_indices,
-    })
-}
-
-fn resolve_model_transform(
-    index: usize,
-    parents: &[Option<usize>],
-    local: &[FixedMat4],
-    model: &mut [Option<FixedMat4>],
-) -> io::Result<FixedMat4> {
-    if let Some(value) = model[index] {
-        return Ok(value);
-    }
-    let value = match parents[index] {
-        Some(parent) => resolve_model_transform(parent, parents, local, model)?.mul(local[index]),
-        None => local[index],
-    };
-    model[index] = Some(value);
-    Ok(value)
-}
-
-#[derive(Clone)]
-struct Channel {
-    node: usize,
-    property: gltf::animation::Property,
-    interpolation: gltf::animation::Interpolation,
-    times: Vec<f32>,
-    values: ChannelValues,
-}
-
-impl Channel {
-    fn duration(&self) -> Option<f32> {
-        self.times.last().copied()
-    }
-}
-
-#[derive(Clone)]
-enum ChannelValues {
-    Vec3(Vec<[f32; 3]>),
-    Rotation(Vec<[f32; 4]>),
-}
-
-fn read_channel(
-    channel: gltf::animation::Channel<'_>,
-    buffers: &[gltf::buffer::Data],
-) -> io::Result<Channel> {
-    let reader = channel.reader(|buffer| Some(&buffers[buffer.index()].0));
-    let times = reader
-        .read_inputs()
-        .ok_or_else(|| {
-            io::Error::new(io::ErrorKind::InvalidData, "animation channel has no input")
-        })?
-        .collect();
-    let values = match reader.read_outputs().ok_or_else(|| {
-        io::Error::new(
-            io::ErrorKind::InvalidData,
-            "animation channel has no output",
-        )
-    })? {
-        gltf::animation::util::ReadOutputs::Translations(values)
-        | gltf::animation::util::ReadOutputs::Scales(values) => {
-            ChannelValues::Vec3(values.collect())
-        }
-        gltf::animation::util::ReadOutputs::Rotations(values) => {
-            ChannelValues::Rotation(values.into_f32().collect())
-        }
-        gltf::animation::util::ReadOutputs::MorphTargetWeights(_) => {
-            return Err(io::Error::new(
-                io::ErrorKind::InvalidData,
-                "morph target animation is not supported for bone baking",
-            ));
-        }
-    };
-    if channel.sampler().interpolation() == gltf::animation::Interpolation::CubicSpline {
-        return Err(io::Error::new(
-            io::ErrorKind::InvalidData,
-            "cubic spline animation is not supported for bone baking",
-        ));
-    }
-    Ok(Channel {
-        node: channel.target().node().index(),
-        property: channel.target().property(),
-        interpolation: channel.sampler().interpolation(),
-        times,
-        values,
-    })
-}
-
-fn local_transform(node: gltf::Node<'_>, channels: &[Channel], time: f32) -> io::Result<FixedMat4> {
-    let (mut translation, mut rotation, mut scale) = match node.transform() {
-        gltf::scene::Transform::Decomposed {
-            translation,
-            rotation,
-            scale,
-        } => (
-            Vec3::from(translation),
-            Quat::from_array(rotation),
-            Vec3::from(scale),
-        ),
-        gltf::scene::Transform::Matrix { matrix } => {
-            return FixedMat4::from_mat4(Mat4::from_cols_array_2d(&matrix));
-        }
-    };
-    for channel in channels
-        .iter()
-        .filter(|channel| channel.node == node.index())
-    {
-        match (&channel.values, channel.property) {
-            (ChannelValues::Vec3(values), gltf::animation::Property::Translation) => {
-                translation = Vec3::from(sample_vec3(channel, values, time))
-            }
-            (ChannelValues::Vec3(values), gltf::animation::Property::Scale) => {
-                scale = Vec3::from(sample_vec3(channel, values, time))
-            }
-            (ChannelValues::Rotation(values), gltf::animation::Property::Rotation) => {
-                rotation = Quat::from_array(sample_rotation(channel, values, time))
-            }
-            _ => {
-                return Err(io::Error::new(
-                    io::ErrorKind::InvalidData,
-                    "animation property does not match its values",
-                ));
-            }
-        }
-    }
-    FixedMat4::from_mat4(Mat4::from_scale_rotation_translation(
-        scale,
-        rotation,
-        translation,
-    ))
-}
-
-fn sample_index(channel: &Channel, time: f32) -> (usize, usize, f32) {
-    let next = channel.times.partition_point(|key| *key <= time);
-    if next == 0 {
-        return (0, 0, 0.0);
-    }
-    if next == channel.times.len() {
-        let last = next - 1;
-        return (last, last, 0.0);
-    }
-    let previous = next - 1;
-    let factor = (time - channel.times[previous]) / (channel.times[next] - channel.times[previous]);
-    (previous, next, factor)
-}
-
-fn sample_vec3(channel: &Channel, values: &[[f32; 3]], time: f32) -> [f32; 3] {
-    let (from, to, factor) = sample_index(channel, time);
-    if channel.interpolation == gltf::animation::Interpolation::Step {
-        return values[from];
-    }
-    Vec3::from(values[from])
-        .lerp(Vec3::from(values[to]), factor)
-        .to_array()
-}
-
-fn sample_rotation(channel: &Channel, values: &[[f32; 4]], time: f32) -> [f32; 4] {
-    let (from, to, factor) = sample_index(channel, time);
-    if channel.interpolation == gltf::animation::Interpolation::Step {
-        return values[from];
-    }
-    Quat::from_array(values[from])
-        .slerp(Quat::from_array(values[to]), factor)
-        .to_array()
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn configured_fighter_clips_bake_to_fixed_point_frames() {
-        let manifest: FighterManifest =
-            ron::from_str(include_str!("../../assets/fighters/test/test.fighter.ron")).unwrap();
-        let baked = bake_gltf(
-            include_bytes!("../../assets/fighters/test/test-fighter-normal.glb"),
-            &manifest.animations,
-        )
-        .unwrap();
-
-        assert_eq!(baked.frame_rate, BAKED_ANIMATION_FPS);
-        assert!(baked.frame_count(AnimKind::Wait).unwrap() > 1);
-        assert_eq!(baked.clip_indices.len(), manifest.animations.len());
-        assert_eq!(
-            baked.clip_indices[&AnimKind::JumpSquat],
-            baked.clip_indices[&AnimKind::Landing]
-        );
-        assert_eq!(
-            baked.clip(AnimKind::Wait).unwrap().frames[0].len(),
-            baked.bone_names.len()
-        );
-        assert_eq!(baked.parents.len(), baked.bone_names.len());
-    }
-
-    #[test]
-    fn pose_sampling_wraps_repeating_frames_and_clamps_finished_frames() {
-        let first = FixedMat4::IDENTITY;
-        let mut second = FixedMat4::IDENTITY;
-        second.translate(FGVec3::lit("2", "0", "0"));
-        let baked = BakedFighterAnimations {
-            frame_rate: BAKED_ANIMATION_FPS,
-            bone_names: vec!["root".into()],
-            parents: vec![None],
-            clips: vec![BakedAnimationClip {
-                frames: vec![vec![first], vec![second]],
-            }],
-            clip_indices: HashMap::from([(AnimKind::Wait, 0)]),
-        };
-
-        let repeating = FighterAnimationFrame {
-            kind: AnimKind::Wait,
-            frame: 3,
-            repeat: true,
-        };
-        let finished = FighterAnimationFrame {
-            kind: AnimKind::Wait,
-            frame: 3,
-            repeat: false,
-        };
-
-        assert_eq!(baked.sample_pose(&repeating), Some(&[second][..]));
-        assert_eq!(baked.sample_pose(&finished), Some(&[second][..]));
-    }
-
-    #[test]
-    fn bone_matrix_component_keeps_names_aligned_with_the_current_pose() {
-        let first = FixedMat4::IDENTITY;
-        let mut second = FixedMat4::IDENTITY;
-        second.translate(FGVec3::lit("0", "3", "0"));
-        let mut matrices = FighterBoneMatrices::default();
-        matrices.set_pose(
-            &["root".into(), "hand".into()],
-            &[None, Some(0)],
-            &[first, second],
-        );
-
-        assert_eq!(matrices.get_current("hand"), Some(second));
-        assert_eq!(
-            matrices.iter().collect::<Vec<_>>(),
-            vec![("root", first), ("hand", second)]
-        );
-    }
-
-    #[test]
-    fn local_pose_reconstructs_model_space_for_gameplay() {
-        let mut root = FixedMat4::IDENTITY;
-        root.translate(FGVec3::lit("10", "0", "0"));
-        let mut hand = FixedMat4::IDENTITY;
-        hand.translate(FGVec3::lit("0", "3", "0"));
-        let mut matrices = FighterBoneMatrices::default();
-
-        matrices.set_pose(
-            &["root".into(), "hand".into()],
-            &[None, Some(0)],
-            &[root, hand],
-        );
-
-        assert_eq!(matrices.local(1), Some(hand));
-        assert_eq!(
-            matrices.get_current("hand").unwrap().get_translation(),
-            FGVec3::lit("10", "3", "0")
-        );
-        assert_eq!(
-            matrices
-                .local(1)
-                .unwrap()
-                .to_mat4()
-                .transform_point3(Vec3::ZERO),
-            Vec3::new(0.0, 3.0, 0.0)
-        );
-    }
-
-    #[test]
-    fn fixed_matrix_transforms_points() {
-        let transform = FixedMat4 {
-            cols: [
-                [FGi32::lit("2"), FGi32::ZERO, FGi32::ZERO, FGi32::ZERO],
-                [FGi32::ZERO, FGi32::lit("3"), FGi32::ZERO, FGi32::ZERO],
-                [FGi32::ZERO, FGi32::ZERO, FGi32::lit("4"), FGi32::ZERO],
-                [
-                    FGi32::lit("10"),
-                    FGi32::lit("-5"),
-                    FGi32::lit("1.5"),
-                    FGi32::ONE,
-                ],
-            ],
-        };
-
-        assert_eq!(
-            transform.transform_point(FGVec3::lit("1.25", "-2", "0.5")),
-            FGVec3::lit("12.5", "-11", "3.5")
-        );
-    }
-
-    #[test]
-    fn fixed_matrix_rotates_points_around_y() {
-        let transform = FixedMat4 {
-            cols: [
-                [FGi32::ONE, FGi32::ZERO, FGi32::ZERO, FGi32::ZERO],
-                [FGi32::ZERO, FGi32::ONE, FGi32::ZERO, FGi32::ZERO],
-                [FGi32::ZERO, FGi32::ZERO, FGi32::ONE, FGi32::ZERO],
-                [
-                    FGi32::lit("10"),
-                    FGi32::lit("2"),
-                    FGi32::lit("-3"),
-                    FGi32::ONE,
-                ],
-            ],
-        };
-
-        assert_eq!(
-            transform
-                .rotate_y(5)
-                .transform_point(FGVec3::lit("1", "0", "0")),
-            FGVec3::lit("10", "2", "-4")
-        );
-    }
-
-    #[test]
-    fn fixed_matrix_builders_set_euler_rotation_and_translation() {
-        let transform = FixedMat4::IDENTITY
-            .with_rotation(FGVec3::lit("0", "0", "1.5707963267948966"))
-            .with_translation(FGVec3::lit("10", "2", "-3"));
-
-        assert_eq!(
-            transform.transform_point(FGVec3::lit("1", "0", "0")),
-            FGVec3::lit("10", "3", "-3")
-        );
-        assert_eq!(transform.get_translation(), FGVec3::lit("10", "2", "-3"));
-    }
-
-    #[test]
-    fn fixed_matrix_rotation_builder_preserves_translation() {
-        let transform = FixedMat4::IDENTITY
-            .with_translation(FGVec3::lit("4", "5", "6"))
-            .with_rotation(FGVec3::lit("0", "0", "1.5707963267948966"));
-
-        assert_eq!(transform.get_translation(), FGVec3::lit("4", "5", "6"));
-    }
-}
@@ -0,0 +1,468 @@
+use super::{
+    BAKED_ANIMATION_FPS,
+    runtime::{BakedAnimationClip, BakedFighterAnimations},
+};
+use crate::fighter::{animation::AnimKind, manifest::FighterManifest};
+use crate::math::fixed_transform::FixedMat4;
+use bevy::{
+    asset::{
+        AssetLoader, AssetPath, AsyncWriteExt, LoadContext,
+        io::{Reader, Writer},
+        processor::LoadTransformAndSave,
+        saver::{AssetSaver, SavedAsset},
+        transformer::{AssetTransformer, TransformedAsset},
+    },
+    prelude::*,
+    reflect::TypePath,
+};
+use serde::Deserialize;
+use std::{collections::HashMap, io, path::Path};
+
+#[derive(Deserialize)]
+struct FighterBakeDeclaration {
+    manifest_path: String,
+}
+#[derive(Asset, TypePath)]
+struct FighterBakeSource {
+    model_bytes: Vec<u8>,
+    buffers: Vec<Vec<u8>>,
+    animations: HashMap<AnimKind, String>,
+}
+#[derive(Default, TypePath)]
+struct FighterBakeSourceLoader;
+
+impl AssetLoader for FighterBakeSourceLoader {
+    type Asset = FighterBakeSource;
+    type Settings = ();
+    type Error = io::Error;
+    async fn load(
+        &self,
+        reader: &mut dyn Reader,
+        _: &Self::Settings,
+        load_context: &mut LoadContext<'_>,
+    ) -> Result<Self::Asset, Self::Error> {
+        let mut declaration = Vec::new();
+        reader.read_to_end(&mut declaration).await?;
+        let declaration: FighterBakeDeclaration = ron::de::from_bytes(&declaration)
+            .map_err(|error| io::Error::new(io::ErrorKind::InvalidData, error))?;
+        let manifest_bytes = load_context
+            .read_asset_bytes(&declaration.manifest_path)
+            .await
+            .map_err(|error| io::Error::other(error.to_string()))?;
+        let manifest: FighterManifest = ron::de::from_bytes(&manifest_bytes)
+            .map_err(|error| io::Error::new(io::ErrorKind::InvalidData, error))?;
+        // `read_asset_bytes` uses the processor's processed asset source. This
+        // deliberately allows `model_path` to point at a `.blend`: the blend
+        // processor has already converted it to a hybrid GLB by this point.
+        let model_bytes = load_context
+            .read_asset_bytes(&manifest.model_path)
+            .await
+            .map_err(|error| io::Error::other(error.to_string()))?;
+        let gltf = gltf::Gltf::from_slice(&model_bytes)
+            .map_err(|error| io::Error::new(io::ErrorKind::InvalidData, error))?;
+        let mut buffers = Vec::with_capacity(gltf.buffers().len());
+        for buffer in gltf.buffers() {
+            let bytes = match buffer.source() {
+                gltf::buffer::Source::Uri(uri) => load_context
+                    .read_asset_bytes(AssetPath::from_path_buf(
+                        Path::new(&manifest.model_path)
+                            .parent()
+                            .unwrap_or_else(|| Path::new(""))
+                            .join(uri),
+                    ))
+                    .await
+                    .map_err(|error| io::Error::other(error.to_string()))?,
+                gltf::buffer::Source::Bin => gltf.blob.clone().ok_or_else(|| {
+                    io::Error::new(io::ErrorKind::InvalidData, "missing glTF binary blob")
+                })?,
+            };
+            buffers.push(bytes);
+        }
+        Ok(FighterBakeSource {
+            model_bytes,
+            buffers,
+            animations: manifest.animations,
+        })
+    }
+    fn extensions(&self) -> &[&str] {
+        &["fighterbake"]
+    }
+}
+
+#[derive(Default, TypePath)]
+struct BakedFighterAnimationsLoader;
+impl AssetLoader for BakedFighterAnimationsLoader {
+    type Asset = BakedFighterAnimations;
+    type Settings = ();
+    type Error = io::Error;
+    async fn load(
+        &self,
+        reader: &mut dyn Reader,
+        _: &Self::Settings,
+        _: &mut LoadContext<'_>,
+    ) -> Result<Self::Asset, Self::Error> {
+        let mut bytes = Vec::new();
+        reader.read_to_end(&mut bytes).await?;
+        bincode::deserialize(&bytes)
+            .map_err(|error| io::Error::new(io::ErrorKind::InvalidData, error))
+    }
+    fn extensions(&self) -> &[&str] {
+        &["fighterbake"]
+    }
+}
+
+#[derive(Default, TypePath)]
+struct FighterBakeTransformer;
+impl AssetTransformer for FighterBakeTransformer {
+    type AssetInput = FighterBakeSource;
+    type AssetOutput = BakedFighterAnimations;
+    type Settings = ();
+    type Error = io::Error;
+    async fn transform<'a>(
+        &'a self,
+        source: TransformedAsset<Self::AssetInput>,
+        _: &'a Self::Settings,
+    ) -> Result<TransformedAsset<Self::AssetOutput>, Self::Error> {
+        let baked = bake_gltf(&source.model_bytes, &source.buffers, &source.animations)?;
+        Ok(source.replace_asset(baked))
+    }
+}
+
+#[derive(Default, TypePath)]
+struct BakedFighterAnimationsSaver;
+impl AssetSaver for BakedFighterAnimationsSaver {
+    type Asset = BakedFighterAnimations;
+    type Settings = ();
+    type OutputLoader = BakedFighterAnimationsLoader;
+    type Error = io::Error;
+    async fn save(
+        &self,
+        writer: &mut Writer,
+        asset: SavedAsset<'_, '_, Self::Asset>,
+        _: &Self::Settings,
+        _: AssetPath<'_>,
+    ) -> Result<(), Self::Error> {
+        let bytes = bincode::serialize(&*asset)
+            .map_err(|error| io::Error::new(io::ErrorKind::InvalidData, error))?;
+        writer.write_all(&bytes).await
+    }
+}
+type FighterBakeProcessor = LoadTransformAndSave<
+    FighterBakeSourceLoader,
+    FighterBakeTransformer,
+    BakedFighterAnimationsSaver,
+>;
+
+pub struct BakedAnimationPlugin;
+
+pub struct BakedAnimationAssetProcessingPlugin;
+
+impl Plugin for BakedAnimationAssetProcessingPlugin {
+    fn build(&self, app: &mut App) {
+        app.init_asset::<BakedFighterAnimations>()
+            .register_asset_loader(FighterBakeSourceLoader)
+            .register_asset_loader(BakedFighterAnimationsLoader)
+            .register_asset_processor(FighterBakeProcessor::new(
+                FighterBakeTransformer,
+                BakedFighterAnimationsSaver,
+            ))
+            .set_default_asset_processor::<FighterBakeProcessor>("fighterbake");
+    }
+}
+
+impl Plugin for BakedAnimationPlugin {
+    fn build(&self, app: &mut App) {
+        app.add_plugins(BakedAnimationAssetProcessingPlugin)
+            .add_systems(
+                bevy_ggrs::prelude::GgrsSchedule,
+                super::runtime::update_fighter_bone_matrices
+                    .in_set(crate::schedule::GameplaySet::Animation),
+            )
+            .add_systems(
+                Update,
+                super::visual_binding::apply_baked_fighter_visual_pose,
+            )
+            .add_observer(super::visual_binding::bind_fighter_visual_bones);
+    }
+}
+
+fn bake_gltf(
+    bytes: &[u8],
+    buffer_bytes: &[Vec<u8>],
+    animations: &HashMap<AnimKind, String>,
+) -> io::Result<BakedFighterAnimations> {
+    let gltf = gltf::Gltf::from_slice(bytes)
+        .map_err(|error| io::Error::new(io::ErrorKind::InvalidData, error))?;
+    let buffers = gltf
+        .buffers()
+        .zip(buffer_bytes)
+        .map(|(buffer, bytes)| {
+            if bytes.len() < buffer.length() {
+                return Err(io::Error::new(
+                    io::ErrorKind::InvalidData,
+                    format!(
+                        "glTF buffer {} is too short: expected {}, got {}",
+                        buffer.index(),
+                        buffer.length(),
+                        bytes.len()
+                    ),
+                ));
+            }
+            Ok(gltf::buffer::Data(bytes.clone()))
+        })
+        .collect::<io::Result<Vec<_>>>()?;
+    if buffers.len() != gltf.buffers().len() {
+        return Err(io::Error::new(
+            io::ErrorKind::InvalidData,
+            "glTF buffer data is incomplete",
+        ));
+    }
+    bake_gltf_document(gltf.document, buffers, animations)
+}
+
+pub(super) fn bake_gltf_document(
+    document: gltf::Document,
+    buffers: Vec<gltf::buffer::Data>,
+    animations: &HashMap<AnimKind, String>,
+) -> io::Result<BakedFighterAnimations> {
+    let nodes: Vec<_> = document.nodes().collect();
+    if nodes.is_empty() {
+        return Err(io::Error::new(
+            io::ErrorKind::InvalidData,
+            "fighter model has no nodes",
+        ));
+    }
+    let mut parents = vec![None; nodes.len()];
+    for node in &nodes {
+        for child in node.children() {
+            parents[child.index()] = Some(node.index());
+        }
+    }
+    let names = nodes
+        .iter()
+        .map(|node| {
+            node.name().map(str::to_owned).ok_or_else(|| {
+                io::Error::new(
+                    io::ErrorKind::InvalidData,
+                    format!("node {} has no name", node.index()),
+                )
+            })
+        })
+        .collect::<io::Result<Vec<_>>>()?;
+    let mut pending = HashMap::<&str, Vec<AnimKind>>::new();
+    for (kind, name) in animations {
+        pending.entry(name).or_default().push(*kind);
+    }
+    let mut clips = Vec::with_capacity(pending.len());
+    let mut clip_indices = HashMap::with_capacity(animations.len());
+    for animation in document.animations() {
+        let name = animation.name().ok_or_else(|| {
+            io::Error::new(
+                io::ErrorKind::InvalidData,
+                format!("animation {} has no name", animation.index()),
+            )
+        })?;
+        let Some(kinds) = pending.remove(name) else {
+            continue;
+        };
+        let channels = animation
+            .channels()
+            .map(|channel| read_channel(channel, &buffers))
+            .collect::<io::Result<Vec<_>>>()?;
+        let duration = channels
+            .iter()
+            .filter_map(Channel::duration)
+            .fold(0.0_f32, f32::max);
+        let frame_count = baked_frame_count(duration, BAKED_ANIMATION_FPS);
+        let mut frames = Vec::with_capacity(frame_count);
+        for frame in 0..frame_count {
+            let time = (frame as f32 / BAKED_ANIMATION_FPS as f32).min(duration);
+            frames.push(
+                nodes
+                    .iter()
+                    .map(|node| local_transform(node.clone(), &channels, time))
+                    .collect::<io::Result<Vec<_>>>()?,
+            );
+        }
+        let index = clips.len();
+        clips.push(BakedAnimationClip { frames });
+        for kind in kinds {
+            clip_indices.insert(kind, index);
+        }
+    }
+    if clips.is_empty() {
+        return Err(io::Error::new(
+            io::ErrorKind::InvalidData,
+            "fighter model has no animations",
+        ));
+    }
+    if !pending.is_empty() {
+        let mut missing = pending.keys().copied().collect::<Vec<_>>();
+        missing.sort_unstable();
+        return Err(io::Error::new(
+            io::ErrorKind::InvalidData,
+            format!(
+                "fighter model has no animations named {}",
+                missing.join(", ")
+            ),
+        ));
+    }
+    Ok(BakedFighterAnimations {
+        frame_rate: BAKED_ANIMATION_FPS,
+        bone_names: names,
+        parents,
+        clips,
+        clip_indices,
+    })
+}
+
+pub(super) fn baked_frame_count(duration: f32, frame_rate: u32) -> usize {
+    let frame = duration as f64 * frame_rate as f64;
+    let nearest_frame = frame.round();
+    let last_frame = if (frame - nearest_frame).abs() < 0.0001 {
+        nearest_frame
+    } else {
+        frame.ceil()
+    };
+    last_frame as usize + 1
+}
+
+#[derive(Clone)]
+pub(super) struct Channel {
+    pub(super) node: usize,
+    pub(super) property: gltf::animation::Property,
+    pub(super) interpolation: gltf::animation::Interpolation,
+    pub(super) times: Vec<f32>,
+    pub(super) values: ChannelValues,
+}
+impl Channel {
+    fn duration(&self) -> Option<f32> {
+        self.times.last().copied()
+    }
+}
+#[derive(Clone)]
+pub(super) enum ChannelValues {
+    Vec3(Vec<[f32; 3]>),
+    Rotation(Vec<[f32; 4]>),
+}
+
+fn read_channel(
+    channel: gltf::animation::Channel<'_>,
+    buffers: &[gltf::buffer::Data],
+) -> io::Result<Channel> {
+    let reader = channel.reader(|buffer| Some(&buffers[buffer.index()].0));
+    let times = reader
+        .read_inputs()
+        .ok_or_else(|| {
+            io::Error::new(io::ErrorKind::InvalidData, "animation channel has no input")
+        })?
+        .collect();
+    let values = match reader.read_outputs().ok_or_else(|| {
+        io::Error::new(
+            io::ErrorKind::InvalidData,
+            "animation channel has no output",
+        )
+    })? {
+        gltf::animation::util::ReadOutputs::Translations(values)
+        | gltf::animation::util::ReadOutputs::Scales(values) => {
+            ChannelValues::Vec3(values.collect())
+        }
+        gltf::animation::util::ReadOutputs::Rotations(values) => {
+            ChannelValues::Rotation(values.into_f32().collect())
+        }
+        gltf::animation::util::ReadOutputs::MorphTargetWeights(_) => {
+            return Err(io::Error::new(
+                io::ErrorKind::InvalidData,
+                "morph target animation is not supported for bone baking",
+            ));
+        }
+    };
+    if channel.sampler().interpolation() == gltf::animation::Interpolation::CubicSpline {
+        return Err(io::Error::new(
+            io::ErrorKind::InvalidData,
+            "cubic spline animation is not supported for bone baking",
+        ));
+    }
+    Ok(Channel {
+        node: channel.target().node().index(),
+        property: channel.target().property(),
+        interpolation: channel.sampler().interpolation(),
+        times,
+        values,
+    })
+}
+
+fn local_transform(node: gltf::Node<'_>, channels: &[Channel], time: f32) -> io::Result<FixedMat4> {
+    let (mut translation, mut rotation, mut scale) = match node.transform() {
+        gltf::scene::Transform::Decomposed {
+            translation,
+            rotation,
+            scale,
+        } => (
+            Vec3::from(translation),
+            Quat::from_array(rotation),
+            Vec3::from(scale),
+        ),
+        gltf::scene::Transform::Matrix { matrix } => {
+            return FixedMat4::from_mat4(Mat4::from_cols_array_2d(&matrix));
+        }
+    };
+    for channel in channels
+        .iter()
+        .filter(|channel| channel.node == node.index())
+    {
+        match (&channel.values, channel.property) {
+            (ChannelValues::Vec3(values), gltf::animation::Property::Translation) => {
+                translation = Vec3::from(sample_vec3(channel, values, time))
+            }
+            (ChannelValues::Vec3(values), gltf::animation::Property::Scale) => {
+                scale = Vec3::from(sample_vec3(channel, values, time))
+            }
+            (ChannelValues::Rotation(values), gltf::animation::Property::Rotation) => {
+                rotation = Quat::from_array(sample_rotation(channel, values, time))
+            }
+            _ => {
+                return Err(io::Error::new(
+                    io::ErrorKind::InvalidData,
+                    "animation property does not match its values",
+                ));
+            }
+        }
+    }
+    FixedMat4::from_mat4(Mat4::from_scale_rotation_translation(
+        scale,
+        rotation,
+        translation,
+    ))
+}
+fn sample_index(channel: &Channel, time: f32) -> (usize, usize, f32) {
+    let next = channel.times.partition_point(|key| *key <= time);
+    if next == 0 {
+        return (0, 0, 0.0);
+    }
+    if next == channel.times.len() {
+        let last = next - 1;
+        return (last, last, 0.0);
+    }
+    let previous = next - 1;
+    let factor = (time - channel.times[previous]) / (channel.times[next] - channel.times[previous]);
+    (previous, next, factor)
+}
+pub(super) fn sample_vec3(channel: &Channel, values: &[[f32; 3]], time: f32) -> [f32; 3] {
+    let (from, to, factor) = sample_index(channel, time);
+    if channel.interpolation == gltf::animation::Interpolation::Step {
+        return values[from];
+    }
+    Vec3::from(values[from])
+        .lerp(Vec3::from(values[to]), factor)
+        .to_array()
+}
+fn sample_rotation(channel: &Channel, values: &[[f32; 4]], time: f32) -> [f32; 4] {
+    let (from, to, factor) = sample_index(channel, time);
+    if channel.interpolation == gltf::animation::Interpolation::Step {
+        return values[from];
+    }
+    Quat::from_array(values[from])
+        .slerp(Quat::from_array(values[to]), factor)
+        .to_array()
+}
@@ -0,0 +1,362 @@
+//! Deterministic, fighter-local skeletal animation samples for gameplay and rendering.
+
+mod asset_baking;
+mod runtime;
+mod visual_binding;
+
+pub use crate::math::fixed_transform::FixedMat4;
+pub use asset_baking::{BakedAnimationAssetProcessingPlugin, BakedAnimationPlugin};
+pub use runtime::{
+    BakedAnimationClip, BakedFighterAnimations, FighterBoneIndexMap, FighterBoneMatrices,
+    update_fighter_bone_matrices,
+};
+
+pub const BAKED_ANIMATION_FPS: u32 = 60;
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::fighter::{animation::AnimKind, manifest::FighterManifest};
+    use crate::math::{int::FGi32, vec3::FGVec3};
+    use asset_baking::{
+        Channel, ChannelValues, bake_gltf_document, baked_frame_count, sample_vec3,
+    };
+    use serde_json::json;
+    use std::collections::HashMap;
+
+    #[test]
+    fn configured_fighter_clips_bake_to_fixed_point_frames() {
+        let manifest: FighterManifest = ron::from_str(include_str!(
+            "../../../assets/fighters/test/test.fighter.ron"
+        ))
+        .unwrap();
+        let (document, buffers) = test_gltf(&manifest.animations);
+        let baked = bake_gltf_document(document, buffers, &manifest.animations).unwrap();
+
+        assert_eq!(baked.frame_rate, BAKED_ANIMATION_FPS);
+        assert_eq!(baked.frame_count(AnimKind::Wait), Some(121));
+        assert_eq!(baked.frame_count(AnimKind::Walk), Some(33));
+        assert_eq!(baked.frame_count(AnimKind::Run), Some(33));
+        assert_eq!(baked.frame_count(AnimKind::Dash), Some(21));
+        assert_eq!(baked.frame_count(AnimKind::Landing), Some(9));
+        assert_eq!(baked.frame_count(AnimKind::JumpBack), Some(57));
+        assert_eq!(baked.clip_indices.len(), manifest.animations.len());
+        assert_eq!(
+            baked.clip(AnimKind::Wait).unwrap().frames[0].len(),
+            baked.bone_names.len()
+        );
+        assert_eq!(baked.parents.len(), baked.bone_names.len());
+    }
+
+    /// Builds the smallest glTF document that still exercises the complete
+    /// animation-baking path. Keeping this fixture in memory avoids making
+    /// unit tests depend on the production Blender asset or Blender itself.
+    fn test_gltf(
+        animations: &HashMap<AnimKind, String>,
+    ) -> (gltf::Document, Vec<gltf::buffer::Data>) {
+        let mut names: Vec<_> = animations.values().cloned().collect();
+        names.sort();
+        names.dedup();
+
+        let mut data = Vec::new();
+        let mut buffer_views = Vec::new();
+        let mut accessors = Vec::new();
+        let mut gltf_animations = Vec::new();
+
+        for name in names {
+            let duration: f32 = match name.as_str() {
+                "Idle_Loop_Game" => 2.0,
+                "Walk_Loop_IK_Game" | "Run_Game" => 0.533333361,
+                "Dash_Game" => 0.333333343,
+                "Jump_Land_Game" => 0.133333340,
+                "JumpB_Game" => 56.0 / 60.0,
+                _ => 0.0,
+            };
+            let input_offset = data.len();
+            data.extend_from_slice(&0.0_f32.to_le_bytes());
+            data.extend_from_slice(&duration.to_le_bytes());
+            let output_offset = data.len();
+            data.extend_from_slice(
+                &[0.0_f32, 0.0, 0.0]
+                    .into_iter()
+                    .flat_map(f32::to_le_bytes)
+                    .collect::<Vec<_>>(),
+            );
+            data.extend_from_slice(
+                &[1.0_f32, 0.0, 0.0]
+                    .into_iter()
+                    .flat_map(f32::to_le_bytes)
+                    .collect::<Vec<_>>(),
+            );
+
+            let input_view = buffer_views.len();
+            buffer_views.push(json!({
+                "buffer": 0,
+                "byteOffset": input_offset,
+                "byteLength": 8
+            }));
+            let output_view = buffer_views.len();
+            buffer_views.push(json!({
+                "buffer": 0,
+                "byteOffset": output_offset,
+                "byteLength": 24
+            }));
+            let input_accessor = accessors.len();
+            accessors.push(json!({
+                "bufferView": input_view,
+                "componentType": 5126,
+                "count": 2,
+                "type": "SCALAR",
+                "min": [0.0],
+                "max": [duration]
+            }));
+            let output_accessor = accessors.len();
+            accessors.push(json!({
+                "bufferView": output_view,
+                "componentType": 5126,
+                "count": 2,
+                "type": "VEC3"
+            }));
+            gltf_animations.push(json!({
+                "name": name,
+                "samplers": [{
+                    "input": input_accessor,
+                    "output": output_accessor,
+                    "interpolation": "LINEAR"
+                }],
+                "channels": [{
+                    "sampler": 0,
+                    "target": { "node": 0, "path": "translation" }
+                }]
+            }));
+        }
+
+        let document = json!({
+            "asset": { "version": "2.0" },
+            "scene": 0,
+            "scenes": [{ "nodes": [0] }],
+            "nodes": [{ "name": "root", "children": [1] }, { "name": "hand" }],
+            "buffers": [{ "byteLength": data.len() }],
+            "bufferViews": buffer_views,
+            "accessors": accessors,
+            "animations": gltf_animations
+        });
+        let bytes = serde_json::to_vec(&document).unwrap();
+        let gltf = gltf::Gltf::from_slice(&bytes).unwrap();
+        (gltf.document, vec![gltf::buffer::Data(data)])
+    }
+
+    #[test]
+    fn pose_sampling_wraps_repeating_frames_and_clamps_finished_frames() {
+        let first = FixedMat4::IDENTITY;
+        let mut second = FixedMat4::IDENTITY;
+        second.translate(FGVec3::lit("2", "0", "0"));
+        let mut terminal = FixedMat4::IDENTITY;
+        terminal.translate(FGVec3::lit("4", "0", "0"));
+        let baked = BakedFighterAnimations {
+            frame_rate: BAKED_ANIMATION_FPS,
+            bone_names: vec!["root".into()],
+            parents: vec![None],
+            clips: vec![BakedAnimationClip {
+                frames: vec![vec![first], vec![second], vec![terminal]],
+            }],
+            clip_indices: HashMap::from([(AnimKind::Wait, 0)]),
+        };
+        let repeating = crate::fighter::animation::FighterAnimationFrame {
+            kind: AnimKind::Wait,
+            frame: 3,
+            repeat: true,
+        };
+        let finished = crate::fighter::animation::FighterAnimationFrame {
+            kind: AnimKind::Wait,
+            frame: 4,
+            repeat: false,
+        };
+        assert_eq!(baked.sample_pose(&repeating), Some(&[second][..]));
+        assert_eq!(baked.sample_pose(&finished), Some(&[terminal][..]));
+    }
+
+    #[test]
+    fn frame_count_snaps_source_frame_rounding_error_to_the_bake_grid() {
+        assert_eq!(baked_frame_count(0.533333361, 60), 33);
+        assert_eq!(baked_frame_count(0.333333343, 60), 21);
+        assert_eq!(baked_frame_count(0.133333340, 60), 9);
+        assert_eq!(baked_frame_count(2.0, 60), 121);
+    }
+
+    #[test]
+    fn linear_source_channel_is_resampled_between_thirty_hz_keys() {
+        let channel = Channel {
+            node: 0,
+            property: gltf::animation::Property::Translation,
+            interpolation: gltf::animation::Interpolation::Linear,
+            times: vec![0.0, 1.0 / 30.0],
+            values: ChannelValues::Vec3(vec![[0.0, 0.0, 0.0], [2.0, 0.0, 0.0]]),
+        };
+        let ChannelValues::Vec3(values) = &channel.values else {
+            unreachable!()
+        };
+        assert_eq!(sample_vec3(&channel, values, 1.0 / 60.0), [1.0, 0.0, 0.0]);
+    }
+
+    #[test]
+    fn presentation_pose_interpolates_previous_and_current_local_transforms() {
+        let mut previous = FixedMat4::IDENTITY;
+        previous.translate(FGVec3::lit("2", "0", "0"));
+        let mut current = FixedMat4::IDENTITY;
+        current.translate(FGVec3::lit("6", "0", "0"));
+        let transform = runtime::interpolate_transform(previous, current, 0.25);
+        assert_eq!(
+            transform.translation,
+            bevy::prelude::Vec3::new(3.0, 0.0, 0.0)
+        );
+    }
+
+    #[test]
+    fn bone_matrix_component_keeps_names_aligned_with_the_current_pose() {
+        let first = FixedMat4::IDENTITY;
+        let mut second = FixedMat4::IDENTITY;
+        second.translate(FGVec3::lit("0", "3", "0"));
+        let mut matrices = FighterBoneMatrices::default();
+        matrices.set_pose(
+            AnimKind::Wait,
+            &["root".into(), "hand".into()],
+            &[None, Some(0)],
+            &[first, second],
+            FGi32::ONE,
+        );
+        assert_eq!(matrices.get_current("hand"), Some(second));
+        assert_eq!(
+            matrices.iter().collect::<Vec<_>>(),
+            vec![("root", first), ("hand", second)]
+        );
+    }
+
+    #[test]
+    fn local_pose_reconstructs_model_space_for_gameplay() {
+        let mut root = FixedMat4::IDENTITY;
+        root.translate(FGVec3::lit("10", "0", "0"));
+        let mut hand = FixedMat4::IDENTITY;
+        hand.translate(FGVec3::lit("0", "3", "0"));
+        let mut matrices = FighterBoneMatrices::default();
+        matrices.set_pose(
+            AnimKind::Wait,
+            &["root".into(), "hand".into()],
+            &[None, Some(0)],
+            &[root, hand],
+            FGi32::ONE,
+        );
+        assert_eq!(matrices.local(1), Some(hand));
+        assert_eq!(
+            matrices.get_current("hand").unwrap().get_translation(),
+            FGVec3::lit("10", "3", "0")
+        );
+        assert_eq!(
+            matrices
+                .local(1)
+                .unwrap()
+                .to_mat4()
+                .transform_point3(bevy::prelude::Vec3::ZERO),
+            bevy::prelude::Vec3::new(0.0, 3.0, 0.0)
+        );
+    }
+
+    #[test]
+    fn repeated_pose_updates_reuse_scratch_and_output_buffers() {
+        let mut matrices = FighterBoneMatrices::default();
+        let names = ["root".into(), "hand".into()];
+        let parents = [None, Some(0)];
+        let pose = [FixedMat4::IDENTITY, FixedMat4::IDENTITY];
+
+        matrices.set_pose(AnimKind::Wait, &names, &parents, &pose, FGi32::ONE);
+        let capacities = matrices.buffer_capacities();
+        matrices.set_pose(AnimKind::Wait, &names, &parents, &pose, FGi32::ONE);
+
+        assert_eq!(capacities, matrices.buffer_capacities());
+    }
+
+    #[test]
+    fn model_scale_affects_gameplay_bones_without_changing_visual_locals() {
+        let mut root = FixedMat4::IDENTITY;
+        root.translate(FGVec3::lit("1", "0", "0"));
+        let mut hand = FixedMat4::IDENTITY;
+        hand.translate(FGVec3::lit("0", "2", "0"));
+        let mut matrices = FighterBoneMatrices::default();
+        matrices.set_pose(
+            AnimKind::Wait,
+            &["root".into(), "hand".into()],
+            &[None, Some(0)],
+            &[root, hand],
+            FGi32::lit("10"),
+        );
+        assert_eq!(matrices.local(1), Some(hand));
+        assert_eq!(
+            matrices.get_current("hand").unwrap().get_translation(),
+            FGVec3::lit("10", "20", "0")
+        );
+    }
+
+    #[test]
+    fn fixed_matrix_transforms_points() {
+        let transform = FixedMat4 {
+            cols: [
+                [FGi32::lit("2"), FGi32::ZERO, FGi32::ZERO, FGi32::ZERO],
+                [FGi32::ZERO, FGi32::lit("3"), FGi32::ZERO, FGi32::ZERO],
+                [FGi32::ZERO, FGi32::ZERO, FGi32::lit("4"), FGi32::ZERO],
+                [
+                    FGi32::lit("10"),
+                    FGi32::lit("-5"),
+                    FGi32::lit("1.5"),
+                    FGi32::ONE,
+                ],
+            ],
+        };
+        assert_eq!(
+            transform.transform_point(FGVec3::lit("1.25", "-2", "0.5")),
+            FGVec3::lit("12.5", "-11", "3.5")
+        );
+    }
+
+    #[test]
+    fn fixed_matrix_rotates_points_around_y() {
+        let transform = FixedMat4 {
+            cols: [
+                [FGi32::ONE, FGi32::ZERO, FGi32::ZERO, FGi32::ZERO],
+                [FGi32::ZERO, FGi32::ONE, FGi32::ZERO, FGi32::ZERO],
+                [FGi32::ZERO, FGi32::ZERO, FGi32::ONE, FGi32::ZERO],
+                [
+                    FGi32::lit("10"),
+                    FGi32::lit("2"),
+                    FGi32::lit("-3"),
+                    FGi32::ONE,
+                ],
+            ],
+        };
+        assert_eq!(
+            transform
+                .rotate_y(5)
+                .transform_point(FGVec3::lit("1", "0", "0")),
+            FGVec3::lit("10", "2", "-4")
+        );
+    }
+
+    #[test]
+    fn fixed_matrix_builders_set_euler_rotation_and_translation() {
+        let transform = FixedMat4::IDENTITY
+            .with_rotation(FGVec3::lit("0", "0", "1.5707963267948966"))
+            .with_translation(FGVec3::lit("10", "2", "-3"));
+        assert_eq!(
+            transform.transform_point(FGVec3::lit("1", "0", "0")),
+            FGVec3::lit("10", "3", "-3")
+        );
+        assert_eq!(transform.get_translation(), FGVec3::lit("10", "2", "-3"));
+    }
+
+    #[test]
+    fn fixed_matrix_rotation_builder_preserves_translation() {
+        let transform = FixedMat4::IDENTITY
+            .with_translation(FGVec3::lit("4", "5", "6"))
+            .with_rotation(FGVec3::lit("0", "0", "1.5707963267948966"));
+        assert_eq!(transform.get_translation(), FGVec3::lit("4", "5", "6"));
+    }
+}
@@ -0,0 +1,282 @@
+use std::collections::HashMap;
+
+use bevy::prelude::*;
+use serde::{Deserialize, Serialize};
+
+use super::BAKED_ANIMATION_FPS;
+
+use crate::{
+    fighter::{
+        Fighter,
+        animation::{AnimKind, FighterAnimationFrame},
+        manifest::FighterManifest,
+        visual::FighterAnimations,
+    },
+    math::fixed_transform::FixedMat4,
+    math::int::FGi32,
+};
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+pub struct BakedAnimationClip {
+    pub frames: Vec<Vec<FixedMat4>>,
+}
+
+#[derive(Asset, bevy::reflect::TypePath, Clone, Debug, Serialize, Deserialize)]
+#[type_path = "shinespark::fighter::baked_animation"]
+pub struct BakedFighterAnimations {
+    pub frame_rate: u32,
+    pub bone_names: Vec<String>,
+    pub parents: Vec<Option<usize>>,
+    pub(super) clips: Vec<BakedAnimationClip>,
+    pub(super) clip_indices: HashMap<AnimKind, usize>,
+}
+
+impl BakedFighterAnimations {
+    pub fn contains_bone(&self, bone: &str) -> bool {
+        self.bone_names.iter().any(|name| name == bone)
+    }
+    pub fn has_unique_bone_names(&self) -> bool {
+        let mut names = std::collections::HashSet::with_capacity(self.bone_names.len());
+        self.bone_names.iter().all(|name| names.insert(name))
+    }
+    pub fn sample_pose(&self, frame: &FighterAnimationFrame) -> Option<&[FixedMat4]> {
+        let frames = &self.clip(frame.kind)?.frames;
+        let frame_index = if frame.repeat {
+            let loop_frame_count = frames.len().saturating_sub(1).max(1) as u32;
+            frame.frame % loop_frame_count
+        } else {
+            frame.frame
+        };
+        frames
+            .get(frame_index as usize)
+            .or_else(|| frames.last())
+            .map(Vec::as_slice)
+    }
+    pub fn frame_count(&self, kind: AnimKind) -> Option<u32> {
+        self.clip(kind).map(|clip| clip.frames.len() as u32)
+    }
+    pub(super) fn clip(&self, kind: AnimKind) -> Option<&BakedAnimationClip> {
+        self.clip_indices
+            .get(&kind)
+            .and_then(|index| self.clips.get(*index))
+    }
+}
+
+#[derive(Component, Clone, Debug, Default)]
+pub struct FighterBoneMatrices {
+    bone_names: Vec<String>,
+    parents: Vec<Option<usize>>,
+    matrices: Vec<FixedMat4>,
+    previous_frame_matrices: Vec<FixedMat4>,
+    local_matrices: Vec<FixedMat4>,
+    previous_local_matrices: Vec<FixedMat4>,
+    model_matrices: Vec<Option<FixedMat4>>,
+    presentation_kind: Option<AnimKind>,
+}
+
+#[derive(Component, Clone, Debug, Default)]
+pub struct FighterBoneIndexMap(pub HashMap<String, usize>);
+
+impl FighterBoneMatrices {
+    #[cfg(test)]
+    pub(super) fn buffer_capacities(&self) -> [usize; 5] {
+        [
+            self.matrices.capacity(),
+            self.local_matrices.capacity(),
+            self.previous_frame_matrices.capacity(),
+            self.previous_local_matrices.capacity(),
+            self.model_matrices.capacity(),
+        ]
+    }
+
+    pub fn get_by_idx(&self, index: usize) -> Option<(FixedMat4, FixedMat4)> {
+        Some((
+            *self.previous_frame_matrices.get(index)?,
+            *self.matrices.get(index)?,
+        ))
+    }
+    pub fn get(&self, bone: &str) -> Option<(FixedMat4, FixedMat4)> {
+        let index = self.bone_names.iter().position(|name| name == bone)?;
+        Some((
+            *self.previous_frame_matrices.get(index)?,
+            *self.matrices.get(index)?,
+        ))
+    }
+    pub fn get_current(&self, bone: &str) -> Option<FixedMat4> {
+        let index = self.bone_names.iter().position(|name| name == bone)?;
+        self.matrices.get(index).copied()
+    }
+    pub fn get_index(&self, index: usize) -> Option<(FixedMat4, FixedMat4)> {
+        Some((
+            *self.previous_frame_matrices.get(index)?,
+            *self.matrices.get(index)?,
+        ))
+    }
+    pub fn get_current_index(&self, index: usize) -> Option<FixedMat4> {
+        self.matrices.get(index).copied()
+    }
+    pub fn iter(&self) -> impl Iterator<Item = (&str, FixedMat4)> {
+        self.bone_names
+            .iter()
+            .map(String::as_str)
+            .zip(self.matrices.iter().copied())
+    }
+    pub fn local(&self, index: usize) -> Option<FixedMat4> {
+        self.local_matrices.get(index).copied()
+    }
+    pub(super) fn presentation_local(
+        &self,
+        index: usize,
+        overstep_fraction: f32,
+    ) -> Option<Transform> {
+        let current = self.local_matrices.get(index).copied()?;
+        let previous = self
+            .previous_local_matrices
+            .get(index)
+            .copied()
+            .unwrap_or(current);
+        Some(interpolate_transform(previous, current, overstep_fraction))
+    }
+    pub(super) fn set_pose(
+        &mut self,
+        kind: AnimKind,
+        bone_names: &[String],
+        parents: &[Option<usize>],
+        local: &[FixedMat4],
+        model_scale: FGi32,
+    ) {
+        assert_eq!(
+            bone_names.len(),
+            local.len(),
+            "baked animation pose does not match its bone names"
+        );
+        assert_eq!(
+            bone_names.len(),
+            parents.len(),
+            "baked bone parents do not match names"
+        );
+        if self.bone_names.is_empty() {
+            self.bone_names.extend_from_slice(bone_names);
+            self.parents.extend_from_slice(parents);
+        } else {
+            assert_eq!(self.bone_names, bone_names, "baked bone names changed");
+            assert_eq!(self.parents, parents, "baked bone parents changed");
+        }
+        self.matrices.reserve(local.len());
+        self.previous_frame_matrices.reserve(local.len());
+        self.local_matrices.reserve(local.len());
+        self.previous_local_matrices.reserve(local.len());
+        self.model_matrices.reserve(local.len());
+        std::mem::swap(&mut self.matrices, &mut self.previous_frame_matrices);
+        let animation_changed = self.presentation_kind != Some(kind);
+        std::mem::swap(&mut self.local_matrices, &mut self.previous_local_matrices);
+        self.local_matrices.clear();
+        self.local_matrices.extend_from_slice(local);
+        self.model_matrices.resize(local.len(), None);
+        self.model_matrices.fill(None);
+        for index in 0..local.len() {
+            resolve_model_transform(index, parents, local, &mut self.model_matrices)
+                .expect("baked bone hierarchy should be valid");
+        }
+        let model_scale = FixedMat4 {
+            cols: [
+                [model_scale, FGi32::ZERO, FGi32::ZERO, FGi32::ZERO],
+                [FGi32::ZERO, model_scale, FGi32::ZERO, FGi32::ZERO],
+                [FGi32::ZERO, FGi32::ZERO, model_scale, FGi32::ZERO],
+                [FGi32::ZERO, FGi32::ZERO, FGi32::ZERO, FGi32::ONE],
+            ],
+        };
+        self.matrices.clear();
+        self.matrices.extend(
+            self.model_matrices.iter().map(|matrix| {
+                model_scale.mul(matrix.expect("baked bone hierarchy should be valid"))
+            }),
+        );
+        // A state transition is a discontinuity, not an animation frame to
+        // interpolate from the previous clip.  Keep the presentation pose at
+        // the new clip's first/current frame immediately.
+        if animation_changed {
+            self.previous_local_matrices
+                .clone_from(&self.local_matrices);
+        }
+        self.presentation_kind = Some(kind);
+    }
+}
+
+pub fn update_fighter_bone_matrices(
+    mut fighters: Query<(
+        &FighterAnimationFrame,
+        &FighterAnimations,
+        &Fighter,
+        &mut FighterBoneMatrices,
+        &mut FighterBoneIndexMap,
+    )>,
+    baked_assets: Res<Assets<BakedFighterAnimations>>,
+    manifests: Res<Assets<FighterManifest>>,
+) {
+    for (frame, animations, fighter, mut matrices, mut bone_indices) in &mut fighters {
+        let baked = baked_assets
+            .get(&animations.baked)
+            .expect("fighter baked animation asset should be loaded before the match starts");
+        assert_eq!(
+            baked.frame_rate, BAKED_ANIMATION_FPS,
+            "fighter baked animation rate does not match the simulation rate"
+        );
+        let pose = baked
+            .sample_pose(frame)
+            .expect("fighter animation frame should select a baked pose");
+        let manifest = manifests
+            .get(&fighter.manifest)
+            .expect("fighter manifest should be loaded before the match starts");
+        matrices.set_pose(
+            frame.kind,
+            &baked.bone_names,
+            &baked.parents,
+            pose,
+            manifest.model_scale,
+        );
+        if bone_indices.0.is_empty() {
+            bone_indices.0.extend(
+                baked
+                    .bone_names
+                    .iter()
+                    .enumerate()
+                    .map(|(index, name)| (name.clone(), index)),
+            );
+        }
+    }
+}
+
+fn resolve_model_transform(
+    index: usize,
+    parents: &[Option<usize>],
+    local: &[FixedMat4],
+    model: &mut [Option<FixedMat4>],
+) -> std::io::Result<FixedMat4> {
+    if let Some(value) = model[index] {
+        return Ok(value);
+    }
+    let value = match parents[index] {
+        Some(parent) => resolve_model_transform(parent, parents, local, model)?.mul(local[index]),
+        None => local[index],
+    };
+    model[index] = Some(value);
+    Ok(value)
+}
+
+pub(super) fn interpolate_transform(
+    previous: FixedMat4,
+    current: FixedMat4,
+    factor: f32,
+) -> Transform {
+    let (previous_scale, previous_rotation, previous_translation) =
+        previous.to_mat4().to_scale_rotation_translation();
+    let (current_scale, current_rotation, current_translation) =
+        current.to_mat4().to_scale_rotation_translation();
+    let factor = factor.clamp(0.0, 1.0);
+    Transform {
+        translation: previous_translation.lerp(current_translation, factor),
+        rotation: previous_rotation.slerp(current_rotation, factor),
+        scale: previous_scale.lerp(current_scale, factor),
+    }
+}
@@ -0,0 +1,107 @@
+use bevy::prelude::*;
+use bevy::world_serialization::{WorldInstanceReady, WorldInstanceSpawner};
+use bevy_ggrs::GgrsFrameTiming;
+use std::collections::{HashMap, HashSet};
+
+use super::{BakedFighterAnimations, FighterBoneMatrices};
+use crate::fighter::visual::FighterAnimations;
+
+#[derive(Component)]
+pub(super) struct BakedFighterBone {
+    fighter: Entity,
+    index: usize,
+}
+
+pub(super) fn bind_fighter_visual_bones(
+    ready: On<WorldInstanceReady>,
+    mut commands: Commands,
+    spawner: Res<WorldInstanceSpawner>,
+    fighters: Query<&FighterAnimations>,
+    baked_assets: Res<Assets<BakedFighterAnimations>>,
+    nodes: Query<(&Name, Option<&ChildOf>)>,
+    animation_players: Query<(), With<AnimationPlayer>>,
+) {
+    let fighter = ready.entity;
+    let Ok(animations) = fighters.get(fighter) else {
+        return;
+    };
+    let baked = baked_assets
+        .get(&animations.baked)
+        .expect("fighter baked animation asset should be loaded before its visual scene");
+    let entities = spawner
+        .iter_instance_entities(ready.instance_id)
+        .collect::<HashSet<_>>();
+    for &entity in &entities {
+        if animation_players.contains(entity) {
+            commands.entity(entity).remove::<AnimationPlayer>();
+        }
+    }
+    let mut indices = HashMap::with_capacity(baked.bone_names.len());
+    for (index, name) in baked.bone_names.iter().enumerate() {
+        let key = (baked.parents[index], name.as_str());
+        assert!(
+            indices.insert(key, index).is_none(),
+            "fighter GLTF has duplicate node names under the same parent"
+        );
+    }
+    let mut assigned = HashMap::new();
+    let mut remaining = entities.iter().copied().collect::<Vec<_>>();
+    while !remaining.is_empty() {
+        let mut next = Vec::new();
+        let mut progress = false;
+        for entity in remaining {
+            let Ok((name, parent)) = nodes.get(entity) else {
+                continue;
+            };
+            let parent = parent.map(ChildOf::parent);
+            let parent_index = match parent {
+                Some(parent) if entities.contains(&parent) => {
+                    if let Some(index) = assigned.get(&parent) {
+                        Some(*index)
+                    } else if nodes.get(parent).ok().is_some_and(|(name, _)| {
+                        baked.bone_names.iter().any(|bone| bone == name.as_str())
+                    }) {
+                        next.push(entity);
+                        continue;
+                    } else {
+                        None
+                    }
+                }
+                _ => None,
+            };
+            if let Some(&index) = indices.get(&(parent_index, name.as_str())) {
+                assigned.insert(entity, index);
+                progress = true;
+            }
+        }
+        if !progress {
+            break;
+        }
+        remaining = next;
+    }
+    if assigned.len() != baked.bone_names.len() {
+        warn!(fighter = ?fighter, bound = assigned.len(), expected = baked.bone_names.len(), "could not bind every baked fighter node to its visual scene");
+    }
+    for (entity, index) in assigned {
+        commands
+            .entity(entity)
+            .insert(BakedFighterBone { fighter, index });
+    }
+}
+
+pub(super) fn apply_baked_fighter_visual_pose(
+    mut nodes: Query<(&mut Transform, &BakedFighterBone)>,
+    fighters: Query<&FighterBoneMatrices>,
+    timing: Res<GgrsFrameTiming>,
+) {
+    let overstep_fraction = timing.overstep_fraction();
+    for (mut transform, bone) in &mut nodes {
+        let Ok(matrices) = fighters.get(bone.fighter) else {
+            continue;
+        };
+        let Some(local) = matrices.presentation_local(bone.index, overstep_fraction) else {
+            continue;
+        };
+        *transform = local;
+    }
+}
@@ -1,9 +1,10 @@
 //! Resolving an integrated fighter position against the stage.

-use crate::fighter::state::FighterStateContext;
+use crate::fighter::ecb::FighterPreviousECB;
+use crate::fighter::{FighterECB, FighterPreviousTranslation, FighterTranslation};
 use crate::math::segment::FGSegment2d;
 use crate::math::vec::FGVec2;
-use crate::stage::line::StageLineID;
+use crate::stage::line::{StageCollision, StageLineID};
 /*
 pub fn collide_fighter_with_scene(
    fighters: Query<(&FighterECB, &mut FighterVelocity, &mut FighterTranslation)>,
@@ -38,34 +39,40 @@ pub struct AirCollisionWithStageResult {
 }

 pub fn air_collide_with_stage(
-    state_context: &FighterStateContext,
+    prev_translation: &FighterPreviousTranslation,
+    translation: &FighterTranslation,
+    prev_ecb: &FighterPreviousECB,
+    ecb: &FighterECB,
+    stage_collision: &StageCollision,
 ) -> Option<AirCollisionWithStageResult> {
    let ray_segment = FGSegment2d::new(
-        state_context.prev_translation.0 + state_context.prev_ecb.get_bottom_point(),
-        state_context.translation.0 + state_context.ecb.get_bottom_point(),
+        prev_translation.0 + prev_ecb.get_bottom_point(),
+        translation.0 + ecb.get_bottom_point(),
    );

-    let mut intersect_results = vec![];
-
-    for (poly_idx, poly) in state_context.stage_collision.stage_polys.iter().enumerate() {
-        if let Some(intersect_result) = poly.intersect_ray(ray_segment) {
-            intersect_results.push((AirCollisionWithStageResult {
-                line_id: {
-                    StageLineID {
-                        polygon: poly_idx,
-                        segment: intersect_result.segment_idx,
-                    }
-                },
-                hit_position: intersect_result.position,
-                hit_normal: intersect_result.normal,
-            }, intersect_result.position.distance_squared(ray_segment.point2())));
-        }
-    }
-    intersect_results.sort_by(| (_, a), (_, b) | {
-        a.cmp(b)
-    });
-
-    intersect_results.iter().last().map(|(val, _)| {
-        val.to_owned().clone()
-    })
+    stage_collision
+        .stage_polys
+        .iter()
+        .enumerate()
+        .filter_map(|(poly_idx, poly)| {
+            poly.intersect_ray(ray_segment).map(|intersect_result| {
+                (
+                    AirCollisionWithStageResult {
+                        line_id: {
+                            StageLineID {
+                                polygon: poly_idx,
+                                segment: intersect_result.segment_idx,
+                            }
+                        },
+                        hit_position: intersect_result.position,
+                        hit_normal: intersect_result.normal,
+                    },
+                    intersect_result
+                        .position
+                        .distance_squared(ray_segment.point2()),
+                )
+            })
+        })
+        .max_by(|(_, a), (_, b)| a.cmp(b))
+        .map(|(result, _)| result)
 }
@@ -8,21 +8,27 @@ use bevy_egui::{EguiContexts, egui};

 use crate::debug_tools::{DebugSettings, FighterDebugRowKind};
 use crate::fighter::animation::FighterAnimationFrame;
-use crate::fighter::attack::FighterSolvedHurtboxes;
+use crate::fighter::attack::{
+    self, FighterKnockbackVelocity, FighterLastAttackDebug, FighterPendingHitReaction,
+    FighterSolvedHurtboxes,
+};
 use crate::fighter::baked_animation::{BakedFighterAnimations, FighterBoneMatrices};
 use crate::fighter::ecb::FighterPreviousECB;
+use crate::fighter::errors::FighterErrors;
 use crate::fighter::hurtbox::FixedAffineCapsule;
-use crate::fighter::state::StateNameDebug;
+use crate::fighter::manifest::FighterManifest;
+use crate::fighter::state::{FighterState, air};
 use crate::fighter::visual::FighterAnimations;
 use crate::fighter::{
-    FighterECB, FighterFacingDirection, FighterHitboxes, FighterPreviousTranslation,
+    Fighter, FighterECB, FighterFacingDirection, FighterHitboxes, FighterPreviousTranslation,
    FighterTranslation, FighterVelocity,
 };
+use crate::game_settings::GameSettings;
 use crate::input::FighterInput;
 use crate::math::int::FGi32;
+use crate::math::vec::FGVec2;
 use crate::math::vec3::FGVec3;
 use crate::player::Player;
-use crate::scripting::FighterAttackScript;

 pub fn debug_draw_ecb(
    ecbs: Query<(
@@ -34,6 +40,12 @@ pub fn debug_draw_ecb(
    mut gizmos: Gizmos,
 ) {
    for (ecb, trf, ecb_prev, trf_prev) in ecbs {
+        gizmos.cross(
+            FGVec3::new(trf.0.x, trf.0.y, FGi32::ZERO).to_vec3(),
+            2.0,
+            bevy::color::palettes::css::BLUE,
+        );
+
        let transformed =
            ecb.to_3d_lineloop(Transform::from_xyz(trf.x.to_num(), trf.y.to_num(), 0.0));
        gizmos.lineloop(transformed, YELLOW);
@@ -52,7 +64,7 @@ pub fn fighter_debug(
        &FighterVelocity,
        &FighterInput,
        &FighterAnimationFrame,
-        &StateNameDebug,
+        &FighterState,
        &FighterAnimations,
        &FighterTranslation,
        &FighterFacingDirection,
@@ -63,7 +75,7 @@ pub fn fighter_debug(
    let mut fighters = query.iter().collect::<Vec<_>>();
    fighters.sort_unstable_by_key(|(player, ..)| player.handle);

-    for (player, velocity, input, animation_frame, state_name, animations, translation, facing) in
+    for (player, velocity, input, animation_frame, state, animations, translation, facing) in
        fighters
    {
        let Some(rows) = settings.player_rows(player.handle) else {
@@ -86,7 +98,7 @@ pub fn fighter_debug(
                            if let Some(frame_count) = frame_count {
                                ui.label(format!(
                                    "State: {:?} ({:?} {}/{})",
-                                    state_name.0,
+                                    state.name(),
                                    animation_frame.kind,
                                    animation_frame.frame,
                                    frame_count
@@ -94,7 +106,8 @@ pub fn fighter_debug(
                            } else {
                                ui.label(format!(
                                    "State: {:?} ({:?})",
-                                    state_name.0, animation_frame.kind
+                                    state.name(),
+                                    animation_frame.kind
                                ));
                            }
                        }
@@ -147,16 +160,25 @@ pub fn fighter_debug(
    Ok(())
 }

-pub fn animation_debug(query: Query<(&GlobalTransform, &FighterBoneMatrices)>, mut gizmos: Gizmos) {
-    for (global_transform, matrices) in query {
+pub fn animation_debug(
+    query: Query<(
+        &FighterTranslation,
+        &FighterFacingDirection,
+        &FighterBoneMatrices,
+    )>,
+    mut gizmos: Gizmos,
+) {
+    for (global_transform, facing_dir, matrices) in query {
+        let global_transform = global_transform.get_3d_transform(facing_dir);
+        let marker_transform = global_transform.to_mat4();
        for (_, matrix) in matrices.iter() {
-            let pos = global_transform.transform_point(Vec3::new(
+            let pos = marker_transform.transform_point(Vec3::new(
                matrix.cols[3][0].to_num(),
                matrix.cols[3][1].to_num(),
                matrix.cols[3][2].to_num(),
            ));
            gizmos.cross(pos, 0.5, bevy::color::palettes::css::RED);
-            gizmos.axes(*global_transform, 1.0);
+            gizmos.axes(marker_transform, 1.0);
        }
    }
 }
@@ -290,6 +312,20 @@ fn capsule_wireframe() -> &'static CapsuleWireframe {
 mod capsule_debug_tests {
    use super::*;

+    #[test]
+    fn animation_markers_ignore_visual_scale() {
+        let global = GlobalTransform::from(Transform {
+            translation: Vec3::new(3.0, 4.0, 5.0),
+            rotation: Quat::from_rotation_y(std::f32::consts::FRAC_PI_2),
+            scale: Vec3::splat(10.0),
+        });
+        let (_, rotation, translation) = global.to_scale_rotation_translation();
+        let marker_transform = Transform::from_translation(translation).with_rotation(rotation);
+
+        let marker = marker_transform.transform_point(Vec3::new(2.0, 0.0, 0.0));
+        assert!(marker.abs_diff_eq(Vec3::new(3.0, 4.0, 3.0), 1e-5));
+    }
+
    #[test]
    fn capsule_wireframe_caps_extend_in_opposite_directions() {
        let wireframe = capsule_wireframe();
@@ -319,20 +355,20 @@ pub fn attack_debug(
        &FighterFacingDirection,
        &FighterAnimationFrame,
    )>,
-    attack_scripts: Res<Assets<FighterAttackScript>>,
    mut gizmos: Gizmos,
 ) {
-    for (hitboxes, matrices, translation, facing_direction, frame) in query {
-        if let Some(script) = &hitboxes.attack_script {
-            for solved_hitbox in hitboxes.active_hitboxes_solved.iter() {
-                let start = solved_hitbox.start.to_vec3();
-                let end = solved_hitbox.end.to_vec3();
-                let center = (solved_hitbox.start + solved_hitbox.end) * FGi32::lit("0.5");
+    for (hitboxes, _matrices, _translation, _facing_direction, _frame) in query {
+        if let Some(active_attack) = &hitboxes.0 {
+            for solved_hitbox in active_attack.solved_hitboxes.iter() {
+                let start = solved_hitbox.capsule.start.to_vec3();
+                let end = solved_hitbox.capsule.end.to_vec3();
+                let center =
+                    (solved_hitbox.capsule.start + solved_hitbox.capsule.end) * FGi32::lit("0.5");
                let length = (start - end).length();

                let attack_capsule = Capsule3d {
                    half_length: length * 0.5,
-                    radius: solved_hitbox.radius.to_num(),
+                    radius: solved_hitbox.capsule.radius.to_num(),
                };

                let aim_dir = (end - start).normalize_or(Vec3::Y);
@@ -353,3 +389,67 @@ pub fn attack_debug(
        }
    }
 }
+
+pub fn attack_debug_gather(
+    query: Query<(
+        Entity,
+        &FighterPendingHitReaction,
+        &FighterTranslation,
+        &Fighter,
+        &FighterInput,
+    )>,
+    mut commands: Commands,
+    manifests: Res<Assets<FighterManifest>>,
+    game_settings: Res<GameSettings>,
+) -> Result {
+    for (entity, reaction, translation, fighter, input) in query {
+        let Some(ref hit) = reaction.0 else {
+            continue;
+        };
+
+        let manifest = manifests
+            .get(&fighter.manifest)
+            .ok_or(FighterErrors::FighterManifestNotFound)?;
+
+        let launch_dir = attack::directional_influence::apply_directional_influence(
+            input.get_last_frame().movement,
+            hit.launch_angle,
+            game_settings.fighter_common.di_max_angle,
+        );
+
+        let mut knockback_vel = FighterKnockbackVelocity(launch_dir * hit.launch_velocity);
+        let mut fighter_vel = FighterVelocity(FGVec2::ZERO);
+        let mut translation = Vec3::new(translation.x.to_num(), translation.y.to_num(), 0.0);
+
+        let mut points = vec![];
+        points.push(translation);
+        points.reserve(hit.hitstun_frames as usize);
+
+        for _ in 1..hit.hitstun_frames {
+            air::integrate_gravity(&mut fighter_vel, &manifest.attributes, false);
+
+            let vel = knockback_vel.length();
+            let new_vel = vel
+                .saturating_sub(game_settings.fighter_common.knockback_decay_per_frame)
+                .max(FGi32::ZERO);
+            knockback_vel = FighterKnockbackVelocity(knockback_vel.0.normalize_or_zero() * new_vel);
+            translation += Vec3::new(knockback_vel.x.to_num(), knockback_vel.y.to_num(), 0.0);
+            translation += Vec3::new(fighter_vel.x.to_num(), fighter_vel.y.to_num(), 0.0);
+            points.push(translation);
+        }
+        commands.entity(entity).insert(FighterLastAttackDebug {
+            trajectory_points: points,
+        });
+    }
+
+    Ok(())
+}
+
+pub fn attack_launch_debug_draw(query: Query<&FighterLastAttackDebug>, mut gizmos: Gizmos) {
+    for debug_attack in query {
+        gizmos.linestrip(
+            debug_attack.trajectory_points.iter().copied(),
+            bevy::color::palettes::css::GREEN,
+        );
+    }
+}
@@ -1,28 +1,44 @@
 use bevy::prelude::*;

-use crate::math::{int::FGi32, vec::FGVec2};
+use crate::{
+    fighter::{
+        FighterFacingDirection, FighterSurfaceState, FighterTranslation,
+        baked_animation::FighterBoneMatrices,
+    }, math::{int::FGi32, vec::FGVec2},
+};

 /// Environment collision box: the diamond used to resolve a fighter against
 /// the stage. Purely geometry — the collision response lives in
 /// [`super::collision`].
-#[derive(Component, Debug, Clone, Copy, Hash)]
+#[derive(Component, Debug, Clone, Copy, Hash, Default)]
 #[require(FighterPreviousECB)]
 pub struct FighterECB {
-    pub vertical_half: FGi32,
-    pub horizontal_half: FGi32,
+    pub top: FGVec2,
+    pub bottom: FGVec2,
+    pub left: FGVec2,
+    pub right: FGVec2,
+}
+
+#[derive(Component, Debug, Clone)]
+pub struct FighterECBBoneIndices {
+    pub indices: Vec<usize>,
 }

 #[derive(Component, Debug, Clone, Copy, Default, Hash)]
 pub struct FighterPreviousECB {
-    pub vertical_half: FGi32,
-    pub horizontal_half: FGi32,
+    pub top: FGVec2,
+    pub bottom: FGVec2,
+    pub left: FGVec2,
+    pub right: FGVec2,
 }

 impl From<FighterECB> for FighterPreviousECB {
    fn from(ecb: FighterECB) -> Self {
        Self {
-            vertical_half: ecb.vertical_half,
-            horizontal_half: ecb.horizontal_half,
+            top: ecb.top,
+            bottom: ecb.bottom,
+            left: ecb.left,
+            right: ecb.right,
        }
    }
 }
@@ -35,53 +51,84 @@ pub fn snapshot_fighter_ecb(fighters: Query<(&FighterECB, &mut FighterPreviousEC

 impl FighterECB {
    pub fn to_3d_lineloop(&self, trf: Transform) -> [Vec3; 4] {
-        let rel_up = trf.transform_point(Vec3::new(
-            0.0,
-            (self.vertical_half + self.vertical_half).to_num(),
-            0.0,
-        ));
-        let rel_down = trf.transform_point(Vec3::new(0.0, 0.0, 0.0));
-        let rel_left = trf.transform_point(Vec3::new(
-            (-self.horizontal_half).to_num(),
-            self.vertical_half.to_num(),
-            0.0,
-        ));
-        let rel_right = trf.transform_point(Vec3::new(
-            self.horizontal_half.to_num(),
-            self.vertical_half.to_num(),
-            0.0,
-        ));
-        [rel_up, rel_right, rel_down, rel_left]
+        [self.top, self.right, self.bottom, self.left]
+            .map(|point| trf.transform_point(Vec3::new(point.x.to_num(), point.y.to_num(), 0.0)))
    }

    pub fn get_bottom_point(&self) -> FGVec2 {
-        FGVec2::new(FGi32::ZERO, FGi32::ZERO)
+        self.bottom
    }
 }

 impl FighterPreviousECB {
    pub fn to_3d_lineloop(&self, trf: Transform) -> [Vec3; 4] {
-        let rel_up = trf.transform_point(Vec3::new(
-            0.0,
-            (self.vertical_half + self.vertical_half).to_num(),
-            0.0,
-        ));
-        let rel_down = trf.transform_point(Vec3::new(0.0, 0.0, 0.0));
-        let rel_left = trf.transform_point(Vec3::new(
-            (-self.horizontal_half).to_num(),
-            self.vertical_half.to_num(),
-            0.0,
-        ));
-        let rel_right = trf.transform_point(Vec3::new(
-            self.horizontal_half.to_num(),
-            self.vertical_half.to_num(),
-            0.0,
-        ));
-        [rel_up, rel_right, rel_down, rel_left]
+        [self.top, self.right, self.bottom, self.left]
+            .map(|point| trf.transform_point(Vec3::new(point.x.to_num(), point.y.to_num(), 0.0)))
    }

    pub fn get_bottom_point(&self) -> FGVec2 {
-        FGVec2::new(FGi32::ZERO, FGi32::ZERO)
+        self.bottom
+    }
+}
+
+pub fn update_ecb(
+    query: Query<(
+        &mut FighterECB,
+        &FighterSurfaceState,
+        &FighterECBBoneIndices,
+        &FighterBoneMatrices,
+        &FighterTranslation,
+        &FighterFacingDirection,
+    )>,
+) {
+    for (mut ecb, surface_state, bone_indices, bone_matrices, translation, facing_dir) in query {
+        let trf = translation.get_3d_transform(facing_dir);
+
+        let transformed_ecb_bones = bone_indices.indices.iter().filter_map(|idx| {
+            let Some((_, bone_matrix)) = bone_matrices.get_by_idx(*idx) else {
+                return None;
+            };
+
+            let pt = trf.transform_point(bone_matrix.get_translation());
+
+            Some(FGVec2::new(pt.x, pt.y) - translation.0)
+        }).collect::<Vec<_>>();
+
+        let max_x = transformed_ecb_bones.iter().max_by(|a, b| a.x.cmp(&b.x)).map(|final_val| final_val.x).unwrap_or(FGi32::lit("0.5"));
+        let min_x = transformed_ecb_bones.iter().min_by(|a, b| a.x.cmp(&b.x)).map(|final_val| final_val.x).unwrap_or(FGi32::lit("-0.5"));
+        let max_y = transformed_ecb_bones.iter().max_by(|a, b| a.y.cmp(&b.y)).map(|final_val| final_val.y).unwrap_or(FGi32::lit("0.5"));
+        let min_y = transformed_ecb_bones.iter().min_by(|a, b| a.y.cmp(&b.y)).map(|final_val| final_val.y).unwrap_or(FGi32::lit("-0.5"));
+
+        let midpoint_height = (max_y + min_y) / FGi32::lit("2.0");
+        let top = FGVec2::new(FGi32::ZERO, max_y);
+        let bottom = FGVec2::new(FGi32::ZERO, min_y);
+        let left = FGVec2::new(min_x, midpoint_height);
+        let right = FGVec2::new(max_x, midpoint_height);
+
+        let ecb_lock_frames_remaining = if let FighterSurfaceState::Airborne { ecb_lock_frames_remaining } = *surface_state {
+            ecb_lock_frames_remaining
+        } else {
+            0
+        };
+
+        ecb.top = top;
+
+        if ecb_lock_frames_remaining == 0 {
+            ecb.bottom = bottom;
+        }
+
+        ecb.left = left;
+        ecb.right = right;
+
+        if surface_state.is_grounded() {
+            ecb.bottom = FGVec2::ZERO;
+        }
+    }
+}
+
+pub fn decrement_ecb_lockout(surface_states: Query<&mut FighterSurfaceState>) {
+    for mut state in surface_states {
+        state.tick_ecb_lock();
    }
 }

@@ -92,12 +139,16 @@ mod tests {
    #[test]
    fn previous_ecb_copies_current_dimensions() {
        let current = FighterECB {
-            vertical_half: FGi32::lit("0.5"),
-            horizontal_half: FGi32::lit("0.25"),
+            bottom: FGVec2::lit("0.0", "-0.5"),
+            top: FGVec2::lit("0.0", "0.5"),
+            left: FGVec2::lit("-0.5", "0.0"),
+            right: FGVec2::lit("0.5", "0.0"),
        };
        let previous = FighterPreviousECB::from(current);

-        assert_eq!(previous.vertical_half, current.vertical_half);
-        assert_eq!(previous.horizontal_half, current.horizontal_half);
+        assert_eq!(previous.top, current.top);
+        assert_eq!(previous.bottom, current.bottom);
+        assert_eq!(previous.left, current.left);
+        assert_eq!(previous.right, current.right);
    }
 }
@@ -0,0 +1,7 @@
+use bevy::reflect::Reflect;
+
+#[derive(thiserror::Error, Debug, Reflect)]
+pub enum FighterErrors {
+    #[error("Fighter manifest not found")]
+    FighterManifestNotFound,
+}
@@ -52,11 +52,21 @@ impl FixedAffineCapsule {
        }
        let mut simplex = [FGVec3::ZERO; 4];
        let mut simplex_len = 0;
-        for _ in 0..20 {
+        let mut supports = [FGVec3::ZERO; 20];
+        let mut support_count = 0;
+        while support_count < supports.len() {
            let point = self.support(direction) - rhs.support(-direction);
            if point.dot(direction) < FGWide::ZERO {
                return false;
            }
+            if supports[..support_count].contains(&point) {
+                // Fixed-point quantization can make GJK revisit a support
+                // point without making progress. This is not proof of an
+                // intersection, so terminate conservatively as a miss
+                return false;
+            }
+            supports[support_count] = point;
+            support_count += 1;
            for index in (1..=simplex_len.min(3)).rev() {
                simplex[index] = simplex[index - 1];
            }
@@ -69,11 +79,11 @@ impl FixedAffineCapsule {
                return true;
            }
        }
-        // A capped GJK iteration means the origin remains enclosed by the
-        // current simplex to fixed-point precision, so conservatively collide.
-        true
+        // Exhaustion means the fixed-point solver could not prove an
+        // intersection. Treating it as a hit creates phantom contacts for
+        // cycling or degenerate simplexes
+        false
    }
-
 }

 trait SupportMap {
@@ -243,18 +253,10 @@ mod tests {

    #[test]
    fn affine_scale_changes_capsule_intersection() {
-        let sphere = FixedAffineCapsule::new(
-            FixedMat4::IDENTITY,
-            FGi32::ZERO,
-            FGi32::lit("1"),
-        );
+        let sphere = FixedAffineCapsule::new(FixedMat4::IDENTITY, FGi32::ZERO, FGi32::lit("1"));
        let mut squashed_transform = FixedMat4::IDENTITY;
        squashed_transform.cols[1][1] = FGi32::lit("0.5");
-        let squashed = FixedAffineCapsule::new(
-            squashed_transform,
-            FGi32::ZERO,
-            FGi32::lit("1"),
-        );
+        let squashed = FixedAffineCapsule::new(squashed_transform, FGi32::ZERO, FGi32::lit("1"));
        let target = FixedCapsule::new(
            FGVec3::lit("0", "1.4", "0"),
            FGVec3::lit("0", "1.4", "0"),
@@ -1,9 +1,6 @@
 use std::collections::HashMap;

-use bevy::{
-    asset::UntypedHandle,
-    prelude::*,
-};
+use bevy::{asset::UntypedHandle, prelude::*};
 use bevy_asset_loader::asset_collection::AssetCollection;
 use ron_asset_manager::prelude::RonAsset;
 use serde::{Deserialize, Serialize};
@@ -11,10 +8,16 @@ use strum::IntoEnumIterator;
 use strum_macros::EnumIter;

 use crate::{
-    AppState, fighter::{FighterAttributes, FighterCameraProfile, animation::AnimKind, attack::AttackKind}, game_settings::GameSettings, math::{int::FGi32, vec3::FGVec3}, texture_reference::TextureReference,
+    AppState,
+    fighter::{FighterAttributes, FighterCameraProfile, animation::AnimKind, attack::AttackKind},
+    game_settings::GameSettings,
+    math::{int::FGi32, vec3::FGVec3},
+    texture_reference::TextureReference,
 };

-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Serialize, Deserialize, Reflect, EnumIter, Default)]
+#[derive(
+    Debug, Clone, Copy, PartialEq, Eq, Hash, Serialize, Deserialize, Reflect, EnumIter, Default,
+)]
 pub enum FighterId {
    #[default]
    TestFighter,
@@ -31,10 +34,27 @@ pub struct FighterHurtbox {
    pub radius: FGi32,
 }

+impl FighterHurtbox {
+    pub fn validate(&self) -> Result<(), String> {
+        if self.bone.trim().is_empty() {
+            return Err("bone name is empty".into());
+        }
+        if self.radius <= FGi32::ZERO {
+            return Err("radius must be positive".into());
+        }
+        if self.half_length < FGi32::ZERO {
+            return Err("half-length must be non-negative".into());
+        }
+        Ok(())
+    }
+}
+
 #[derive(Clone, Asset, Deserialize, Reflect, RonAsset)]
 pub struct FighterManifest {
    pub id: FighterId,
    pub model_path: String,
+    #[reflect(ignore)]
+    pub model_scale: FGi32,
    pub baked_animation_path: String,
    #[asset]
    #[dependency]
@@ -45,6 +65,7 @@ pub struct FighterManifest {
    pub animations: HashMap<AnimKind, String>,
    pub attack_scripts: HashMap<AttackKind, String>,
    pub hurtboxes: Vec<FighterHurtbox>,
+    pub ecb_bones: Vec<String>,
 }

 #[derive(Resource)]
@@ -108,6 +129,13 @@ pub fn prepare_fighter_manifests(
            );
            return;
        }
+        if manifest.model_scale <= FGi32::ZERO {
+            fail(
+                &mut next_state,
+                &format!("{:?} has a non-positive model scale", manifest.id),
+            );
+            return;
+        }
        if manifest.baked_animation_path.is_empty() {
            fail(
                &mut next_state,
@@ -13,10 +13,12 @@ pub mod baked_animation;
 pub mod collision;
 pub mod debug;
 pub mod ecb;
+pub mod errors;
 pub mod hurtbox;
 pub mod manifest;
 pub mod motion;
 pub mod state;
+pub mod surface;
 pub mod visual;

 // The fighter components are re-exported so the rest of the crate can say
@@ -26,11 +28,18 @@ pub mod visual;
 pub use attributes::FighterAttributes;
 pub use ecb::FighterECB;
 pub use manifest::FighterId;
-pub use motion::{FighterPreviousTranslation, FighterTranslation, FighterVelocity, Grounded};
+pub use motion::{
+    FighterPreviousFacingDirection, FighterPreviousTranslation, FighterTranslation, FighterVelocity,
+};
+pub use surface::FighterSurfaceState;

 use crate::{
-    fighter::{
-        attack::{FighterAttackPlugin, FighterAttackScriptAssets, FighterSolvedHurtboxes}, baked_animation::FighterBoneMatrices, hurtbox::FixedCapsule, manifest::FighterManifest, state::{FighterState, fall::FallState}, visual::FighterAnimations,
+    AppState, fighter::{
+        attack::{
+            AttackKind, FighterAttackPlugin, FighterAttackScriptAssets, FighterDamage,
+            FighterKnockbackVelocity, FighterPendingHitReaction, FighterSolvedHurtboxes,
+            FighterStaleMoveQueue,
+        }, baked_animation::{FighterBoneIndexMap, FighterBoneMatrices}, ecb::FighterECBBoneIndices, manifest::FighterManifest, state::{FighterState, air::AirborneStateCommon, fall::FallState}, visual::FighterAnimations,
    }, input::FighterInput, math::{int::FGi32, vec::FGVec2}, player::Player, schedule::GameplaySet, scripting::FighterAttackScript, stage::line::StageCollision,
 };
 use state::state_interrupt_system;
@@ -46,6 +55,34 @@ pub enum FighterFacingDirection {
    Right,
 }

+#[derive(Component, Copy, Clone, Hash, Debug, PartialEq, Reflect, Default)]
+pub enum FighterHitstopShakeKind {
+    #[default]
+    Horizontal,
+    Vertical,
+}
+
+#[derive(Component, Copy, Clone, Hash, Debug, PartialEq, Reflect, Default)]
+pub enum FighterHitstopShakeRole {
+    #[default]
+    Attacker,
+    Receiver,
+}
+
+#[derive(Component, Default, Copy, Clone, Hash)]
+pub struct FighterHitstopShake {
+    pub remaining_frames: u32,
+    pub total_frames: u32,
+    pub kind: FighterHitstopShakeKind,
+    pub role: FighterHitstopShakeRole,
+}
+
+#[derive(Component, Default, Copy, Clone, Hash)]
+#[require(FighterHitstopShake)]
+pub struct FighterHitstop {
+    pub remaining_frames: u32,
+}
+
 impl FighterFacingDirection {
    fn reverse(&self) -> Self {
        match self {
@@ -91,10 +128,21 @@ impl FighterFacingDirection {
 pub struct FighterVisual;

 #[derive(Component)]
+#[require(
+    FighterStaleMoveQueue,
+    FighterDamage,
+    FighterPendingHitReaction,
+    FighterHitstop,
+    FighterKnockbackVelocity,
+    FighterTranslation
+)]
 pub struct Fighter {
    pub manifest: Handle<FighterManifest>,
 }

+#[derive(Resource, Clone, Debug)]
+pub struct FighterRoster(pub Vec<Entity>);
+
 impl Plugin for FighterPlugin {
    fn build(&self, app: &mut App) {
        app.add_plugins(FighterAttackPlugin)
@@ -102,7 +150,8 @@ impl Plugin for FighterPlugin {
            .add_systems(
                GgrsSchedule,
                (
-                    ecb::snapshot_fighter_ecb.before(state_interrupt_system),
+                    (ecb::snapshot_fighter_ecb, motion::snapshot_fighter_motion)
+                        .before(state_interrupt_system),
                    animation::advance_fighter_animation_frames.before(state_interrupt_system),
                    state::state_interrupt_system,
                )
@@ -110,7 +159,9 @@ impl Plugin for FighterPlugin {
            )
            .add_systems(
                GgrsSchedule,
-                (state::state_update_system,).in_set(GameplaySet::StateUpdate),
+                (state::state_update_system, decay_hitstop)
+                    .chain()
+                    .in_set(GameplaySet::StateUpdate),
            )
            /*.add_systems(
                GgrsSchedule,
@@ -120,10 +171,15 @@ impl Plugin for FighterPlugin {
            )*/
            .add_systems(
                GgrsSchedule,
-                state::state_collision_interrupt_system.in_set(GameplaySet::Collision),
+                (
+                    (ecb::update_ecb, ecb::decrement_ecb_lockout, state::state_collision_interrupt_system).chain(),
+                    baked_animation::update_fighter_bone_matrices,
+                )
+                    .chain()
+                    .in_set(GameplaySet::Collision),
            )
            .add_systems(
-                Update,
+                PostUpdate,
                (
                    motion::apply_fighter_translation_to_visuals,
                    animation::apply_animation,
@@ -136,6 +192,8 @@ impl Plugin for FighterPlugin {
            // is a desync waiting to happen.
            .rollback_component_with_copy::<FighterECB>()
            .checksum_component_with_hash::<FighterECB>()
+            .rollback_component_with_clone::<FighterStaleMoveQueue>()
+            .checksum_component_with_hash::<FighterStaleMoveQueue>()
            .rollback_component_with_copy::<ecb::FighterPreviousECB>()
            .checksum_component_with_hash::<ecb::FighterPreviousECB>()
            .rollback_component_with_copy::<FighterVelocity>()
@@ -144,11 +202,21 @@ impl Plugin for FighterPlugin {
            .checksum_component_with_hash::<FighterTranslation>()
            .rollback_component_with_copy::<FighterPreviousTranslation>()
            .checksum_component_with_hash::<FighterPreviousTranslation>()
+            .rollback_component_with_copy::<FighterPreviousFacingDirection>()
+            .checksum_component_with_hash::<FighterPreviousFacingDirection>()
            .rollback_component_with_copy::<animation::FighterAnimationFrame>()
            .checksum_component_with_hash::<animation::FighterAnimationFrame>()
-            .rollback_component_with_copy::<Grounded>()
-            .checksum_component_with_hash::<Grounded>()
+            .rollback_component_with_copy::<FighterSurfaceState>()
+            .checksum_component_with_hash::<FighterSurfaceState>()
            .rollback_component_with_copy::<FighterFacingDirection>()
+            .rollback_component_with_copy::<FighterDamage>()
+            .checksum_component_with_hash::<FighterDamage>()
+            .rollback_component_with_clone::<FighterPendingHitReaction>()
+            .checksum_component_with_hash::<FighterPendingHitReaction>()
+            .rollback_component_with_copy::<FighterHitstop>()
+            .checksum_component_with_hash::<FighterHitstop>()
+            .rollback_component_with_copy::<FighterKnockbackVelocity>()
+            .checksum_component_with_hash::<FighterKnockbackVelocity>()
            .rollback_resource_with_reflect::<StageCollision>()
            // Debug views.
            .add_systems(
@@ -165,7 +233,14 @@ impl Plugin for FighterPlugin {
            )
            .add_systems(
                FixedPostUpdate,
-                debug::attack_debug.run_if(crate::debug_tools::attack_hitboxes_enabled),
+                (
+                    debug::attack_debug_gather,
+                    (debug::attack_debug, debug::attack_launch_debug_draw)
+                        .after(debug::attack_debug_gather),
+                )
+                    .chain()
+                    .run_if(crate::debug_tools::attack_hitboxes_enabled)
+                    .run_if(in_state(AppState::InMatch)),
            )
            .add_systems(
                FixedPostUpdate,
@@ -174,6 +249,7 @@ impl Plugin for FighterPlugin {
            .rollback_component_with_clone::<FighterState>()
            .rollback_component_with_clone::<FighterHitboxes>()
            .rollback_component_with_clone::<FighterBoneMatrices>()
+            .rollback_component_with_clone::<FighterHitstopShake>()
            .checksum_component_with_hash::<FighterHitboxes>()
            .rollback_component_with_clone::<FighterSolvedHurtboxes>()
            .checksum_component_with_hash::<FighterSolvedHurtboxes>()
@@ -182,64 +258,73 @@ impl Plugin for FighterPlugin {
            .register_type::<FighterFacingDirection>();
    }
 }
-
-#[derive(Component, Clone, Hash)]
-pub struct FighterHitboxes {
-    pub attack_script: Option<Handle<FighterAttackScript>>,
+#[derive(Clone, Debug, Hash)]
+pub struct FighterActiveAttack {
+    pub kind: AttackKind,
+    pub script: Handle<FighterAttackScript>,
    pub active_hitboxes: Vec<usize>,
-    pub active_hitboxes_solved: Vec<FixedCapsule>,
+    pub solved_hitboxes: Vec<attack::FighterSolvedHitbox>,
+    pub hit_fighters: Vec<Entity>,
+    pub stalled: bool,
 }

-impl FighterHitboxes {
-    pub fn clear(&mut self) {
-        self.attack_script = None;
-        self.active_hitboxes.clear();
-    }
-}
+#[derive(Component, Clone, Debug, Default, Hash)]
+pub struct FighterHitboxes(pub Option<FighterActiveAttack>);

 pub fn spawn_fighter(
    commands: &mut Commands,
    player_handle: usize,
    spawn_position: FGVec2,
    manifest: Handle<FighterManifest>,
+    model_scale: FGi32,
    animations: FighterAnimations,
    attack_scripts: FighterAttackScriptAssets,
    visual_root: WorldAssetRoot,
-) {
-    commands.spawn((
-        Name(format!("Fighter {player_handle}").into()),
-        Player {
-            handle: player_handle,
-        },
-        Fighter { manifest: manifest },
-        FighterFacingDirection::Right,
-        (
-            FighterECB {
-                vertical_half: FGi32::lit("5.0"),
-                horizontal_half: FGi32::lit("2.5"),
+    ecb_bone_indices: Vec<usize>,
+) -> Entity {
+    commands
+        .spawn((
+            Name(format!("Fighter {player_handle}").into()),
+            Player {
+                handle: player_handle,
            },
-            FighterHitboxes {
-                attack_script: None,
-                active_hitboxes: vec![],
-                active_hitboxes_solved: vec![]
-            },
-        ),
-        (
-            FighterVelocity::default(),
-            FighterTranslation(spawn_position),
-            FighterPreviousTranslation(spawn_position),
-        ),
-        visual_root,
-        animations,
-        attack_scripts,
-        FighterState::Fall(FallState),
-        animation::FighterAnimationFrame::new(animation::AnimKind::Wait, true),
-        (
-            baked_animation::FighterBoneMatrices::default(),
-            FighterSolvedHurtboxes::default(),
-            FighterVisual,
-            FighterInput::default(),
-            crate::camera::FighterCameraExtents::default(),
-        ),
-    ));
+            Fighter { manifest: manifest },
+            FighterFacingDirection::Right,
+            FighterPreviousFacingDirection(FighterFacingDirection::Right),
+            FighterSurfaceState::default(),
+            Transform::from_scale(Vec3::splat(model_scale.to_num())),
+            (
+                FighterECB::default(),
+                FighterHitboxes::default(),
+                FighterECBBoneIndices {
+                    indices: ecb_bone_indices
+                }
+            ),
+            (
+                FighterVelocity::default(),
+                FighterTranslation(spawn_position),
+                FighterPreviousTranslation(spawn_position),
+            ),
+            visual_root,
+            animations,
+            attack_scripts,
+            FighterState::Fall(FallState::new(AirborneStateCommon::default())),
+            animation::FighterAnimationFrame::new(animation::AnimKind::Wait, true),
+            (
+                baked_animation::FighterBoneMatrices::default(),
+                FighterBoneIndexMap::default(),
+                FighterSolvedHurtboxes::default(),
+                FighterVisual,
+                FighterInput::default(),
+                crate::camera::FighterCameraExtents::default(),
+            ),
+        ))
+        .id()
+}
+
+pub fn decay_hitstop(query: Query<(&mut FighterHitstop, &mut FighterHitstopShake)>) {
+    for (mut hitstop, mut hitstop_shake) in query {
+        hitstop.remaining_frames = hitstop.remaining_frames.saturating_sub(1);
+        hitstop_shake.remaining_frames = hitstop_shake.remaining_frames.saturating_sub(1);
+    }
 }
@@ -5,13 +5,15 @@ use bevy::prelude::*;
 use bevy_ggrs::GgrsFrameTiming;

 use crate::debug_tools::PresentationMotionMode;
+use crate::fighter::FighterHitstopShake;
+use crate::game_settings::GameSettings;
 use crate::{
-    fighter::{FighterECB, FighterFacingDirection, baked_animation::FixedMat4},
+    fighter::{FighterFacingDirection, baked_animation::FixedMat4},
    math::{int::FGi32, vec::FGVec2, vec3::FGVec3},
 };

 #[derive(Component, Clone, Copy, Hash)]
-pub struct Grounded;
+pub struct FighterPreviousFacingDirection(pub FighterFacingDirection);

 #[derive(Component, Deref, DerefMut, Default, Debug, Clone, Copy, Hash)]
 pub struct FighterVelocity(pub FGVec2);
@@ -54,26 +56,58 @@ pub fn apply_fighter_translation_to_visuals(
    query: Query<(
        &FighterTranslation,
        &FighterPreviousTranslation,
-        &FighterECB,
+        &FighterHitstopShake,
        &mut Transform,
    )>,
    timing: Res<GgrsFrameTiming>,
    debug_settings: Res<crate::debug_tools::DebugSettings>,
+    game_settings: Res<GameSettings>,
 ) {
    let overstep_fraction = timing.overstep_fraction();
-    for (translation, previous_translation, ecb, mut transform) in query {
+    for (translation, previous_translation, hitstop_shake, mut transform) in query {
        let translation = sample_presentation_translation(
            *previous_translation,
            *translation,
            overstep_fraction,
            debug_settings.motion_sampling,
        );
-        let bottom = ecb.get_bottom_point();
        transform.translation = Vec3::new(
-            translation.x + bottom.x.to_num::<f32>(),
-            translation.y + bottom.y.to_num::<f32>(),
+            translation.x,
+            translation.y,
            0.0,
        );
+
+        if hitstop_shake.remaining_frames > 0
+            && hitstop_shake.total_frames > 0
+            && !game_settings.fighter_common.visual_shake_table.is_empty()
+        {
+            let total = hitstop_shake.total_frames as f32;
+            let curr = hitstop_shake.remaining_frames as f32;
+            let elapsed = 1.0 - curr / total;
+
+            let access_index = (hitstop_shake.remaining_frames as usize)
+                % game_settings.fighter_common.visual_shake_table.len();
+            let shake_multiplier = match hitstop_shake.role {
+                super::FighterHitstopShakeRole::Attacker => {
+                    game_settings
+                        .fighter_common
+                        .attacker_visual_shake_multiplier
+                }
+                super::FighterHitstopShakeRole::Receiver => 1.0,
+            };
+            let shake_amount: f32 =
+                1.0 - EaseFunction::QuinticIn.sample(elapsed).unwrap_or_default();
+            let shake_amount = game_settings.fighter_common.visual_shake_table[access_index]
+                * shake_amount
+                * shake_multiplier;
+
+            let shake_offset = match hitstop_shake.kind {
+                super::FighterHitstopShakeKind::Horizontal => Vec3::new(shake_amount, 0.0, 0.0),
+                super::FighterHitstopShakeKind::Vertical => Vec3::new(0.0, shake_amount, 0.0),
+            };
+
+            transform.translation += shake_offset;
+        }
    }
 }

@@ -82,24 +116,31 @@ pub fn apply_air_motion(
        &FighterVelocity,
        &mut FighterTranslation,
        &mut FighterPreviousTranslation,
-        &mut Transform,
    )>,
    _time: Res<Time<Fixed>>,
 ) {
-    for (velocity, mut translation, mut prev_translation, _transform) in fighters {
+    for (velocity, mut translation, mut prev_translation) in fighters {
        prev_translation.0 = translation.0;
        translation.0 += velocity.0;
    }
 }

-pub fn copy_fighter_transform_to_visuals(fighters: Query<(&FighterTranslation, &mut Transform)>) {
-    for (translation, mut transform) in fighters {
-        transform.translation = Vec3::new(translation.x.to_num(), translation.y.to_num(), 0.0);
+pub fn fighter_movement() {}
+
+pub fn snapshot_fighter_motion(
+    query: Query<(
+        &FighterTranslation,
+        &FighterFacingDirection,
+        &mut FighterPreviousTranslation,
+        &mut FighterPreviousFacingDirection,
+    )>,
+) {
+    for (translation, facing, mut previous_translation, mut previous_facing) in query {
+        previous_translation.0 = translation.0;
+        previous_facing.0 = *facing;
    }
 }

-pub fn fighter_movement() {}
-
 #[cfg(test)]
 mod tests {
    use super::*;
@@ -127,4 +168,34 @@ mod tests {

        assert_eq!(position, Vec2::new(7.0, 14.0));
    }
+
+    #[test]
+    fn snapshot_fighter_motion_copies_current_world_state() {
+        let mut world = World::new();
+        world.spawn((
+            FighterTranslation(FGVec2::new(FGi32::lit("3"), FGi32::lit("4"))),
+            FighterFacingDirection::Left,
+            FighterPreviousTranslation::default(),
+            FighterPreviousFacingDirection(FighterFacingDirection::Right),
+        ));
+
+        let mut schedule = Schedule::default();
+        schedule.add_systems(snapshot_fighter_motion);
+        schedule.run(&mut world);
+
+        let (_, _, previous_translation, previous_facing) = world
+            .query::<(
+                &FighterTranslation,
+                &FighterFacingDirection,
+                &FighterPreviousTranslation,
+                &FighterPreviousFacingDirection,
+            )>()
+            .single(&world)
+            .unwrap();
+        assert_eq!(
+            previous_translation.0,
+            FGVec2::new(FGi32::lit("3"), FGi32::lit("4"))
+        );
+        assert_eq!(previous_facing.0, FighterFacingDirection::Left);
+    }
 }
@@ -1,8 +1,44 @@
+use crate::fighter::state::land::{LandingState, LandingType};
+use crate::fighter::state::{CollisionContext, FighterState};
 use crate::fighter::*;
+use crate::input::FighterCommands;

-pub fn integrate_gravity(velocity: &mut FighterVelocity, attributes: &FighterAttributes) {
+#[derive(Default, Debug, Clone, Copy, Hash)]
+pub struct AirborneStateCommon {
+    pub is_fast_falling: bool,
+}
+
+pub fn process_fast_fall(
+    airborne_state_common: &mut AirborneStateCommon,
+    input: &mut FighterInput,
+    velocity: &mut FighterVelocity,
+    attributes: &FighterAttributes,
+) {
+    if velocity.y.is_negative() {
+        if input.has_command(FighterCommands::SmashMoveDown) {
+            airborne_state_common.is_fast_falling = true;
+        }
+        input.clear_command(FighterCommands::SmashMoveDown);
+    }
+
+    if airborne_state_common.is_fast_falling {
+        velocity.y = -attributes.fast_fall_speed;
+    }
+}
+
+pub fn integrate_gravity(
+    velocity: &mut FighterVelocity,
+    attributes: &FighterAttributes,
+    fast_fall: bool,
+) {
    velocity.y -= attributes.gravity;
-    velocity.y = velocity.y.max(-attributes.terminal_velocity);
+
+    let terminal_vel = if fast_fall {
+        -attributes.fast_fall_speed
+    } else {
+        -attributes.terminal_velocity
+    };
+    velocity.y = velocity.y.max(terminal_vel);
 }

 pub fn apply_air_drift(
@@ -18,32 +54,24 @@ pub fn apply_air_drift(
            velocity.x += (-velocity_sign) * attribs.air_friction;
        }
    } else {
-        let target_velocity =
-            input.get_last_frame().movement.x.signum() * attribs.max_air_horizontal_velocity;
-        let acceleration =
-            input.get_last_frame().movement.x.signum() * attribs.air_acceleration_base;
-        let mut acceleration =
-            acceleration + input.get_last_frame().movement.x * attribs.air_acceleration_stick;
-        let velocity_x = velocity.x;
-        if !(velocity_x * acceleration < FGi32::ZERO) {
-            if acceleration > FGi32::ZERO {
-                if velocity_x + acceleration > target_velocity {
-                    acceleration = -attribs.air_friction;
-                    if velocity_x + acceleration < target_velocity {
-                        acceleration = target_velocity - velocity_x;
-                    }
-                    if velocity_x + acceleration > attribs.max_air_horizontal_velocity {
-                        acceleration = attribs.max_air_horizontal_velocity - velocity_x;
-                    }
-                }
-            } else if velocity_x + acceleration < target_velocity {
-                acceleration = attribs.air_friction;
-                if velocity_x + acceleration > target_velocity {
-                    acceleration = target_velocity - velocity_x;
-                }
-                if velocity_x + acceleration < -attribs.max_air_horizontal_velocity {
-                    acceleration = -attribs.max_air_horizontal_velocity - velocity_x;
-                }
+        let target_velocity = input.get_last_frame().movement.x * attribs.air_drift_max;
+        let mut acceleration = input.get_last_frame().movement.x.signum()
+            * attribs.air_acceleration_base
+            + input.get_last_frame().movement.x * attribs.air_acceleration_stick;
+
+        // Acceleration opposes velocity
+        if acceleration * velocity.x < 0 {
+            // do nothing
+        } else {
+            let predicted_vel = velocity.x + acceleration;
+            let will_go_past = predicted_vel.abs() > target_velocity.abs();
+
+            if velocity.x.abs() < target_velocity.abs() && will_go_past {
+                // Prevent overshoot
+                acceleration = target_velocity - velocity.x
+            } else if velocity.x.abs() > target_velocity.abs() {
+                let diff = (velocity.x - target_velocity).abs();
+                acceleration = velocity.x.signum() * (-(attribs.air_friction).min(diff));
            }
        }

@@ -60,3 +88,108 @@ pub fn apply_air_motion(
    prev_translation.0 = translation.0;
    translation.0 += velocity.0;
 }
+
+pub fn update_standard_motion(
+    ctx: &mut crate::fighter::state::UpdateContext,
+    airborne_common: &mut AirborneStateCommon,
+) {
+    process_fast_fall(
+        airborne_common,
+        ctx.input,
+        &mut ctx.velocity,
+        ctx.fighter_attributes,
+    );
+    integrate_gravity(
+        ctx.velocity,
+        ctx.fighter_attributes,
+        airborne_common.is_fast_falling,
+    );
+    apply_air_drift(ctx.velocity, ctx.fighter_attributes, ctx.input);
+    apply_air_motion(
+        ctx.velocity,
+        ctx.translation,
+        ctx.prev_translation,
+    );
+}
+
+pub fn collision_interrupt(
+    ctx: &mut CollisionContext,
+    landing_type: LandingType,
+) -> Option<FighterState> {
+    let res = ctx.air_collide_with_stage()?;
+    let diff = res.hit_position - ctx.translation.0;
+    ctx.ecb.bottom -= diff;
+    ctx.ecb.top -= diff;
+    ctx.ecb.left -= diff;
+    ctx.ecb.right -= diff;
+    ctx.translation.0 = res.hit_position;
+    ctx.surface.land(res.line_id);
+    Some(FighterState::Land(LandingState::create(landing_type)))
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::{
+        input::{FighterInput, FighterInputFrame},
+        math::vec::FGVec2,
+    };
+
+    fn test_attributes() -> FighterAttributes {
+        FighterAttributes {
+            base_walk_accel: FGi32::ZERO,
+            stick_walk_accel: FGi32::ZERO,
+            max_walk_vel: FGi32::ZERO,
+            dash_acceleration_duration: 0,
+            dash_duration: 0,
+            dash_initial_velocity: FGi32::ZERO,
+            base_dash_accel: FGi32::ZERO,
+            stick_dash_accel: FGi32::ZERO,
+            max_dash_vel: FGi32::ZERO,
+            jumpsquat_duration: 0,
+            short_hop_vertical_velocity: FGi32::ZERO,
+            full_jump_vertical_velocity: FGi32::ZERO,
+            jump_horizontal_velocity: FGi32::ZERO,
+            air_jump_multiplier: FGi32::ZERO,
+            air_jump_horizontal_velocity: FGi32::ZERO,
+            landing_iasa: 0,
+            landing_duration: 0,
+            air_acceleration_base: FGi32::ZERO,
+            air_acceleration_stick: FGi32::ZERO,
+            max_air_horizontal_velocity: FGi32::lit("1.2"),
+            air_drift_max: FGi32::lit("1.2"),
+            ground_friction: FGi32::ZERO,
+            terminal_velocity: FGi32::ZERO,
+            fast_fall_speed: FGi32::ZERO,
+            gravity: FGi32::ZERO,
+            weight: FGi32::lit("1"),
+            air_friction: FGi32::lit("0.001"),
+            air_dodge_duration: 0,
+            air_dodge_velocity: FGi32::ZERO,
+            air_dodge_decay: FGi32::ZERO,
+        }
+    }
+
+    #[test]
+    fn zero_air_acceleration_is_symmetric() {
+        let attributes = test_attributes();
+        let mut right_input = FighterInput::default();
+        right_input.push_input_frame(FighterInputFrame {
+            movement: FGVec2::new(FGi32::ONE, FGi32::ZERO),
+            ..default()
+        });
+        let mut left_input = FighterInput::default();
+        left_input.push_input_frame(FighterInputFrame {
+            movement: FGVec2::new(-FGi32::ONE, FGi32::ZERO),
+            ..default()
+        });
+
+        let mut right_velocity = FighterVelocity(FGVec2::ZERO);
+        let mut left_velocity = FighterVelocity(FGVec2::ZERO);
+        apply_air_drift(&mut right_velocity, &attributes, &right_input);
+        apply_air_drift(&mut left_velocity, &attributes, &left_input);
+
+        assert_eq!(right_velocity.x, FGi32::ZERO);
+        assert_eq!(left_velocity.x, FGi32::ZERO);
+    }
+}
@@ -1,10 +1,12 @@
 use crate::{
    fighter::{
        animation::AnimKind,
-        collision,
        state::{
-            FighterState, FighterStateContext, FighterStateImpl, air, fall::FallState,
-            ground::GroundedStateCommon, land::LandingState,
+            CollisionContext, EnterContext, FighterState, FighterStateImpl, InterruptContext,
+            UpdateContext,
+            air::{self, AirborneStateCommon},
+            fall::FallState,
+            land::LandingType,
        },
    },
    input,
@@ -19,16 +21,18 @@ pub struct AirDodgeState {
 impl FighterStateImpl for AirDodgeState {
    const NAME: &'static str = "AirDodge";

-    fn check_interrupt(&self, state_context: &mut FighterStateContext) -> Option<FighterState> {
+    fn check_interrupt(&self, state_context: &mut InterruptContext) -> Option<FighterState> {
        if state_context.is_current_animation_finished() {
-            Some(FighterState::Fall(FallState))
+            Some(FighterState::Fall(FallState::new(
+                AirborneStateCommon::default(),
+            )))
        } else {
            None
        }
    }

-    fn update(&mut self, state_context: &mut FighterStateContext) {
-        state_context.velocity.0 *= state_context.fighter_manifest.attributes.air_dodge_decay;
+    fn update(&mut self, state_context: &mut UpdateContext) {
+        state_context.velocity.0 *= state_context.fighter_attributes.air_dodge_decay;

        air::apply_air_motion(
            state_context.velocity,
@@ -39,29 +43,28 @@ impl FighterStateImpl for AirDodgeState {

    fn check_collision_interrupt(
        &mut self,
-        state_context: &mut FighterStateContext,
+        state_context: &mut CollisionContext,
    ) -> Option<FighterState> {
-        if let Some(res) = collision::air_collide_with_stage(state_context) {
-            // Adjust translation
-            state_context.translation.0 = res.hit_position - state_context.ecb.get_bottom_point();
-            let grounded_common = GroundedStateCommon {
-                current_line_id: res.line_id,
-            };
-            Some(FighterState::Land(LandingState { grounded_common }))
-        } else {
-            None
-        }
+        air::collision_interrupt(state_context, LandingType::Special)
    }

-    fn on_enter(&mut self, state_context: &mut FighterStateContext) {
+    fn on_enter(&mut self, state_context: &mut EnterContext) {
        state_context.play_animation(AnimKind::AirDodge, false);

        state_context.velocity.0 =
-            self.direction * state_context.fighter_manifest.attributes.air_dodge_velocity;
+            self.direction * state_context.fighter_attributes.air_dodge_velocity;
+    }
+
+    fn is_visually_grounded<'a>(&'a self) -> bool {
+        false
+    }
+
+    fn surface_policy(&self) -> super::SurfacePolicy {
+        super::SurfacePolicy::Airborne(crate::fighter::surface::EcbLockPolicy::StartOnDetach)
    }
 }

-pub fn check_input(state_context: &FighterStateContext) -> Option<FighterState> {
+pub fn check_input(state_context: &InterruptContext) -> Option<FighterState> {
    state_context
        .input
        .has_command(input::FighterCommands::Shield)
@@ -0,0 +1,126 @@
+use super::{
+    CollisionContext, EnterContext, FighterStateImpl, InterruptContext, UpdateContext, ground,
+};
+use crate::fighter::animation::AnimKind;
+use crate::fighter::state::{FighterState, dash, ground_attack, turn, walk};
+use crate::fighter::state::ground::{grounded_movement_common_interrupts, grounded_movement_standstill_common_interrupts};
+
+#[derive(Debug, Clone, Hash)]
+pub enum CrouchSubState {
+    Entering,
+    Idle,
+    Exiting
+}
+
+#[derive(Debug, Clone, Hash)]
+pub struct CrouchState {
+    sub_state: CrouchSubState
+}
+
+pub fn crouch_idle_interrupts(
+    state_context: &InterruptContext,
+) -> Option<FighterState> {
+    if let Some(state) = ground_attack::check_interrupt(state_context) {
+        Some(state)
+    } else if let Some(state) = dash::check_input(state_context) {
+        Some(state)
+    } else if let Some(state) = turn::check_input(state_context) {
+        Some(state)
+    } else if let Some(state) = walk::check_input(state_context) {
+        Some(state)
+    } else {
+        None
+    }
+}
+
+pub fn crouch_entering_interrupts(
+    state_context: &InterruptContext,
+) -> Option<FighterState> {
+    if let Some(state) = ground_attack::check_interrupt(state_context) {
+        Some(state)
+    } else {
+        None
+    }
+}
+
+impl FighterStateImpl for CrouchState {
+    const NAME: &'static str = "Crouch";
+    fn check_interrupt(&self, state_context: &mut InterruptContext) -> Option<FighterState> {
+        if let Some(state) = grounded_movement_common_interrupts(state_context) {
+            return Some(state);
+        }
+
+        match self.sub_state {
+            CrouchSubState::Entering => {
+                // While entering the crouch animation we do not allow movement inputs, but we do allow attacks and jumps
+                if state_context.is_current_animation_finished() {
+                    return Some(FighterState::Crouch(
+                        CrouchState {
+                            sub_state: CrouchSubState::Idle,
+                        }
+                    ));
+                } else {
+                    return crouch_entering_interrupts(state_context);
+                }
+            },
+            CrouchSubState::Idle => {
+                if state_context.input.get_last_frame().movement.y > -state_context.game_settings.input_common.run_stick_threshold {
+                    return Some(FighterState::Crouch (
+                        CrouchState {
+                            sub_state: CrouchSubState::Exiting,
+                        }
+                    ));
+                } else {
+                    return crouch_idle_interrupts(state_context);
+                }
+            },
+            CrouchSubState::Exiting => {
+                if state_context.is_current_animation_finished() {
+                    return grounded_movement_standstill_common_interrupts(state_context);
+                } else {
+                    return crouch_idle_interrupts(state_context);
+                }
+            },
+        }
+    }
+
+    fn on_enter(&mut self, state_context: &mut EnterContext) {
+        match self.sub_state {
+            CrouchSubState::Entering => {
+                state_context.play_animation(AnimKind::CrouchEnter, false);
+            },
+            CrouchSubState::Idle => {
+                state_context.play_animation(AnimKind::CrouchIdle, true);
+            },
+            CrouchSubState::Exiting => {
+                state_context.play_animation(AnimKind::CrouchExit, false);
+            },
+        }
+    }
+
+    fn update(&mut self, state_context: &mut UpdateContext) {
+        ground::update_friction_motion(state_context);
+    }
+
+    fn check_collision_interrupt(
+        &mut self,
+        state_context: &mut CollisionContext,
+    ) -> Option<FighterState> {
+        ground::collision_interrupt(state_context, false)
+    }
+
+    fn is_visually_grounded<'a>(&'a self) -> bool {
+        true
+    }
+}
+
+pub fn check_input(state_context: &InterruptContext) -> Option<FighterState> {
+    let input_frame = state_context.input.get_last_frame();
+
+    if input_frame.movement.y <= -state_context.game_settings.input_common.run_stick_threshold {
+        return Some(FighterState::Crouch(CrouchState {
+            sub_state: CrouchSubState::Entering
+        }));
+    }
+    None
+}
@@ -1,74 +1,56 @@
-use std::hash::Hasher;
-
-use super::{FighterStateContext, FighterStateImpl, ground, run, wait, walk};
+use super::{
+    CollisionContext, EnterContext, FighterStateImpl, InterruptContext, UpdateContext, ground, run,
+    wait, walk,
+};
 use crate::fighter::FighterFacingDirection;
 use crate::fighter::animation::AnimKind;
 use crate::fighter::state::FighterState;
-use crate::fighter::state::fall::FallState;
-use crate::fighter::state::ground::{GroundedMotionResult, GroundedStateCommon};
 use crate::input::FighterCommands::{SmashMoveLeft, SmashMoveRight};

-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, Hash)]
 pub struct DashState {
    direction: FighterFacingDirection,
-    ground_common: GroundedStateCommon,
-}
-
-impl std::hash::Hash for DashState {
-    fn hash<H: Hasher>(&self, state: &mut H) {
-        self.direction.hash(state);
-    }
 }

 impl DashState {
-    pub fn new(direction: FighterFacingDirection, ground_common: GroundedStateCommon) -> Self {
-        Self {
-            direction,
-            ground_common,
-        }
+    pub fn new(direction: FighterFacingDirection) -> Self {
+        Self { direction }
    }
 }

 impl FighterStateImpl for DashState {
    const NAME: &'static str = "Dash";
-    fn check_interrupt(&self, ctx: &mut FighterStateContext) -> Option<FighterState> {
-        let ground = &self.ground_common;
-        let attributes = ctx.fighter_manifest.attributes;
+    fn check_interrupt(&self, ctx: &mut InterruptContext) -> Option<FighterState> {
+        let attributes = ctx.fighter_attributes;

        // A reverse dash can interrupt before IASA
        if let Some(direction) =
            check_smash_input_with_dir(ctx).filter(|direction| *direction != self.direction)
        {
-            return Some(FighterState::Dash(DashState::new(
-                direction,
-                ground.clone(),
-            )));
+            return Some(FighterState::Dash(DashState::new(direction)));
        }

-        if let Some(state) = ground::grounded_movement_common_interrupts(ctx, ground) {
+        if let Some(state) = ground::grounded_movement_common_interrupts(ctx) {
            return Some(state);
        }

        if ctx.is_current_animation_finished() {
-            return run::check_input(ctx, ground)
-                .or_else(|| walk::check_input(ctx, ground))
-                .or_else(|| wait::check_input(ctx, ground));
+            return run::check_input(ctx)
+                .or_else(|| walk::check_input(ctx))
+                .or_else(|| wait::check_input(ctx));
        }

        if ctx.get_current_animation_frame() > attributes.dash_acceleration_duration {
-            return run::check_input(ctx, ground);
+            return run::check_input(ctx);
        }

        None
    }

-    fn on_enter(&mut self, state_context: &mut FighterStateContext) {
+    fn on_enter(&mut self, state_context: &mut EnterContext) {
        *state_context.facing_direction = self.direction;
-        state_context.velocity.x = state_context
-            .fighter_manifest
-            .attributes
-            .dash_initial_velocity
-            * self.direction.to_sign();
+        state_context.velocity.x =
+            state_context.fighter_attributes.dash_initial_velocity * self.direction.to_sign();

        state_context.play_animation(AnimKind::Dash, false);

@@ -86,24 +68,20 @@ impl FighterStateImpl for DashState {
        }
    }

-    fn update(&mut self, state_context: &mut FighterStateContext) {
+    fn update(&mut self, state_context: &mut UpdateContext) {
        if state_context.get_current_animation_frame()
-            < state_context
-                .fighter_manifest
-                .attributes
-                .dash_acceleration_duration
+            < state_context.fighter_attributes.dash_acceleration_duration
        {}

        let last_frame = state_context.input.get_last_frame();
        let (accel, target_vel) = state_context
-            .fighter_manifest
-            .attributes
+            .fighter_attributes
            .get_accel_and_target_dashrun(&last_frame, self.direction.to_sign());
        let accel = ground::compute_ground_accel(
            accel,
            target_vel,
            state_context.velocity.x,
-            &state_context.fighter_manifest.attributes,
+            state_context.fighter_attributes,
            state_context.game_settings,
        );
        state_context.velocity.x += accel;
@@ -117,21 +95,17 @@ impl FighterStateImpl for DashState {

    fn check_collision_interrupt(
        &mut self,
-        state_context: &mut FighterStateContext,
+        state_context: &mut CollisionContext,
    ) -> Option<FighterState> {
-        if let GroundedMotionResult::InAir =
-            ground::collide_with_stage_grounded(state_context, &mut self.ground_common, true)
-        {
-            Some(FighterState::Fall(FallState))
-        } else {
-            None
-        }
+        ground::collision_interrupt(state_context, true)
+    }
+
+    fn is_visually_grounded<'a>(&'a self) -> bool {
+        true
    }
 }

-fn check_smash_input_with_dir(
-    state_context: &FighterStateContext,
-) -> Option<FighterFacingDirection> {
+fn check_smash_input_with_dir(state_context: &InterruptContext) -> Option<FighterFacingDirection> {
    if state_context.input.has_command(SmashMoveLeft) {
        return Some(FighterFacingDirection::Left);
    } else if state_context.input.has_command(SmashMoveRight) {
@@ -141,10 +115,6 @@ fn check_smash_input_with_dir(
    }
 }

-pub fn check_input(
-    state_context: &FighterStateContext,
-    ground_common: &GroundedStateCommon,
-) -> Option<FighterState> {
-    check_smash_input_with_dir(state_context)
-        .map(|dir| FighterState::Dash(DashState::new(dir, ground_common.clone())))
+pub fn check_input(state_context: &InterruptContext) -> Option<FighterState> {
+    check_smash_input_with_dir(state_context).map(|dir| FighterState::Dash(DashState::new(dir)))
 }
@@ -1,62 +1,53 @@
-use super::{FighterStateContext, FighterStateImpl};
+use super::{CollisionContext, EnterContext, FighterStateImpl, InterruptContext, UpdateContext};
 use crate::fighter::animation::AnimKind;
-use crate::fighter::collision;
-use crate::fighter::state::ground::GroundedStateCommon;
-use crate::fighter::state::land::LandingState;
+use crate::fighter::state::air::AirborneStateCommon;
 use crate::fighter::state::{FighterState, air, jump};

-#[derive(Debug, Clone, Copy, Hash)]
-pub struct FallState;
+#[derive(Debug, Clone, Copy, Hash, Default)]
+pub struct FallState {
+    airborne_state_common: AirborneStateCommon
+}

-impl FighterStateImpl for FallState {
-    const NAME: &'static str = "Fall";
-    fn check_interrupt(&self, state_context: &mut FighterStateContext) -> Option<FighterState> {
-        jump::check_input_double_jump(state_context)
-    }
-
-    fn on_enter(&mut self, state_context: &mut super::FighterStateContext) {
-        state_context.play_animation(AnimKind::Fall, true);
-    }
-
-    fn update(&mut self, state_context: &mut super::FighterStateContext) {
-        air::integrate_gravity(
-            state_context.velocity,
-            &state_context.fighter_manifest.attributes,
-        );
-        air::apply_air_drift(
-            state_context.velocity,
-            &state_context.fighter_manifest.attributes,
-            state_context.input,
-        );
-        air::apply_air_motion(
-            state_context.velocity,
-            state_context.translation,
-            state_context.prev_translation,
-        );
-    }
-
-    fn check_collision_interrupt(
-        &mut self,
-        state_context: &mut FighterStateContext,
-    ) -> Option<FighterState> {
-        if let Some(res) = collision::air_collide_with_stage(state_context) {
-            // Adjust translation
-            state_context.translation.0 = res.hit_position - state_context.ecb.get_bottom_point();
-            let grounded_common = GroundedStateCommon {
-                current_line_id: res.line_id,
-            };
-            Some(FighterState::Land(LandingState { grounded_common }))
-        } else {
-            None
+impl FallState {
+    pub fn new(airborne_state_common: AirborneStateCommon) -> Self {
+        Self {
+            airborne_state_common
        }
    }
 }

-pub fn check_input(state_context: &FighterStateContext) -> Option<FighterState> {
-    let input_frame = state_context.input.get_last_frame();
+impl FighterStateImpl for FallState {
+    const NAME: &'static str = "Fall";
+    
+    fn check_interrupt(&self, state_context: &mut InterruptContext) -> Option<FighterState> {
+        jump::check_input_double_jump(state_context)
+    }

-    if input_frame.movement.x.abs() < state_context.game_settings.input_common.stick_deadzone {
-        return Some(FighterState::Fall(FallState));
+    fn on_enter(&mut self, state_context: &mut EnterContext) {
+        state_context.play_animation(AnimKind::Fall, true);
+    }
+
+    fn update(&mut self, state_context: &mut UpdateContext) {
+        air::update_standard_motion(state_context, &mut self.airborne_state_common);
+    }
+
+    fn check_collision_interrupt(
+        &mut self,
+        state_context: &mut CollisionContext,
+    ) -> Option<FighterState> {
+        air::collision_interrupt(
+            state_context,
+            crate::fighter::state::land::LandingType::Normal,
+        )
+    }
+    
+    fn is_visually_grounded<'a>(
+        &'a self,
+    ) -> bool {
+        false
+    }
+
+    fn surface_policy(&self) -> super::SurfacePolicy {
+        super::SurfacePolicy::Airborne(crate::fighter::surface::EcbLockPolicy::StartOnDetach)
    }
-    None
 }
@@ -3,22 +3,15 @@
 //! bit-for-bit deterministic for rollback.

 use crate::fighter::state::{
-    FighterState, FighterStateContext, dash, ground_attack, turn, wait, walk,
+    CollisionContext, FighterState, InterruptContext, air, crouch, dash, fall, ground_attack, turn, wait, walk,
 };
 use crate::fighter::{
    FighterAttributes, FighterPreviousTranslation, FighterTranslation, FighterVelocity,
 };
 use crate::game_settings::GameSettings;
-use crate::math::int::FGi32;
+use crate::math::int::{FGWide, FGi32};
 use crate::math::vec::FGVec2;
-use crate::stage::line::{StageLineID, StagePolyLineSegmentType};
-
-use bevy::prelude::*;
-
-#[derive(Reflect, Hash, Clone, Debug)]
-pub struct GroundedStateCommon {
-    pub current_line_id: StageLineID,
-}
+use crate::stage::line::{StageLineID, StagePoly, StagePolyLineSegment, StagePolyLineSegmentType};

 pub fn apply_grounded_friction(friction: FGi32, ground_vel: FGi32) -> FGi32 {
    if friction.abs() > ground_vel.abs() {
@@ -74,6 +67,85 @@ pub enum GroundedMotionResult {
    InAir,
 }

+enum GroundedPositionResult {
+    InGround {
+        point: FGVec2,
+        segment_idx: usize,
+        blocked: bool,
+    },
+    InAir,
+}
+
+fn is_walkable_floor(segment: &StagePolyLineSegment) -> bool {
+    segment.segment_type == StagePolyLineSegmentType::Floor && segment.normal.y > FGi32::ZERO
+}
+
+fn resolve_grounded_position(
+    stage_poly: &StagePoly,
+    starting_segment_idx: usize,
+    point: FGVec2,
+    can_walk_off: bool,
+) -> GroundedPositionResult {
+    let mut segment_idx = starting_segment_idx;
+
+    // A single frame can cross several short connected segments. The bound also
+    // prevents malformed closed polygons from cycling forever.
+    for _ in 0..stage_poly.segments.len() {
+        let Some(segment) = stage_poly.get_segment(segment_idx) else {
+            return GroundedPositionResult::InAir;
+        };
+        if !is_walkable_floor(segment) {
+            return GroundedPositionResult::InAir;
+        }
+
+        let segment_vector = segment.segment.point2() - segment.segment.point1();
+        let projection = segment_vector.dot(point - segment.segment.point1());
+        let length_squared = segment_vector.length_squared();
+
+        let (next_segment_idx, edge_point) = if projection < FGWide::ZERO {
+            (
+                stage_poly.get_prev_segment_index(segment_idx),
+                segment.segment.point1(),
+            )
+        } else if projection > length_squared {
+            (
+                stage_poly.get_next_segment_index(segment_idx),
+                segment.segment.point2(),
+            )
+        } else {
+            let projected_point = segment.segment.point1()
+                + (point - segment.segment.point1()).project_onto(segment.segment.direction());
+            return GroundedPositionResult::InGround {
+                point: projected_point,
+                segment_idx,
+                blocked: false,
+            };
+        };
+
+        if let Some(next_segment_idx) = next_segment_idx
+            && next_segment_idx != segment_idx
+            && stage_poly
+                .get_segment(next_segment_idx)
+                .is_some_and(is_walkable_floor)
+        {
+            segment_idx = next_segment_idx;
+            continue;
+        }
+
+        return if can_walk_off {
+            GroundedPositionResult::InAir
+        } else {
+            GroundedPositionResult::InGround {
+                point: edge_point,
+                segment_idx,
+                blocked: true,
+            }
+        };
+    }
+
+    GroundedPositionResult::InAir
+}
+
 pub fn apply_grounded_motion(
    velocity: &FighterVelocity,
    translation: &mut FighterTranslation,
@@ -84,84 +156,315 @@ pub fn apply_grounded_motion(
    translation.0 += FGVec2::new(velocity.0.x, FGi32::ZERO);
 }

+pub fn update_friction_motion(ctx: &mut crate::fighter::state::UpdateContext) {
+    let friction = if ctx.velocity.x.abs() > ctx.fighter_attributes.max_walk_vel {
+        ctx.fighter_attributes.ground_friction
+            * ctx
+                .game_settings
+                .fighter_common
+                .ground_friction_over_walk_speed_multiplier
+    } else {
+        ctx.fighter_attributes.ground_friction
+    };
+
+    let ground_velocity = ctx.velocity.x;
+    ctx.velocity.x += apply_grounded_friction(friction, ground_velocity);
+    apply_grounded_motion(ctx.velocity, ctx.translation, ctx.prev_translation);
+}
+
 pub fn collide_with_stage_grounded(
-    state_context: &mut FighterStateContext,
-    ground_common: &mut GroundedStateCommon,
-    _can_walk_off: bool,
+    state_context: &mut CollisionContext,
+    can_walk_off: bool,
 ) -> GroundedMotionResult {
    let translation = &mut state_context.translation;
    let ecb = &state_context.ecb;
-    let stage_collision = &state_context.stage_collision;
+    let stage_collision = state_context.stage_collision;

-    let stage_poly = stage_collision
-        .stage_polys
-        .get(ground_common.current_line_id.polygon);
+    let Some(current_line_id) = state_context.surface.line_id() else {
+        return GroundedMotionResult::InAir;
+    };
+
+    let stage_poly = stage_collision.stage_polys.get(current_line_id.polygon);

    if let Some(stage_poly) = stage_poly {
        let ecb_bottom_pos = translation.0 + ecb.get_bottom_point();
-        let current_segment_idx = ground_common.current_line_id.segment;
-
-        // First, we check the current segment, if that fails, we check the surrounding ones
-        let grounded_ecb_bottom_pos = [
-            Some(current_segment_idx),
-            stage_poly.get_prev_segment_index(current_segment_idx),
-            stage_poly.get_next_segment_index(current_segment_idx),
-        ]
-        .into_iter()
-        .flatten()
-        .find_map(|segment_idx| {
-            let segment = stage_poly.get_segment(segment_idx)?;
-            if segment.segment_type != StagePolyLineSegmentType::Floor {
-                return None;
+        match resolve_grounded_position(
+            stage_poly,
+            current_line_id.segment,
+            ecb_bottom_pos,
+            can_walk_off,
+        ) {
+            GroundedPositionResult::InGround {
+                point,
+                segment_idx,
+                blocked,
+            } => {
+                let current_segment = stage_poly.get_segment(segment_idx).unwrap();
+                translation.0 = point - ecb.get_bottom_point();
+                state_context.velocity.0 = if blocked {
+                    FGVec2::ZERO
+                } else {
+                    state_context.velocity.0
+                        - state_context
+                            .velocity
+                            .0
+                            .project_onto_normalized(current_segment.normal)
+                };
+                state_context.surface.land(StageLineID {
+                    polygon: current_line_id.polygon,
+                    segment: segment_idx,
+                });
+                GroundedMotionResult::InGround
            }
-
-            let line_dir = segment.segment.direction();
-            let projected_point = segment.segment.point1()
-                + (ecb_bottom_pos - segment.segment.point1()).project_onto(line_dir);
-            let closest_point = segment.segment.closest_point(ecb_bottom_pos);
-            let distance = closest_point.distance(projected_point);
-
-            if distance < 0.01 {
-                return Some((projected_point, segment_idx, segment.normal));
+            GroundedPositionResult::InAir => {
+                state_context.surface.apply_airborne_policy(
+                    crate::fighter::surface::EcbLockPolicy::StartOnDetach,
+                    state_context.leave_ground_ecb_lock_duration,
+                );
+                GroundedMotionResult::InAir
            }
-
-            None
-        });
-
-        if let Some((bp, new_segment_idx, normal)) = grounded_ecb_bottom_pos {
-            translation.0 = bp - ecb.get_bottom_point();
-            state_context.velocity.0 =
-                state_context.velocity.0 - state_context.velocity.0.project_onto_normalized(normal);
-            ground_common.current_line_id.segment = new_segment_idx;
-            GroundedMotionResult::InGround
-        } else {
-            GroundedMotionResult::InAir
        }
    } else {
+        state_context.surface.apply_airborne_policy(
+            crate::fighter::surface::EcbLockPolicy::StartOnDetach,
+            state_context.leave_ground_ecb_lock_duration,
+        );
        GroundedMotionResult::InAir
    }
 }

+pub fn collision_interrupt(ctx: &mut CollisionContext, can_walk_off: bool) -> Option<FighterState> {
+    match collide_with_stage_grounded(ctx, can_walk_off) {
+        GroundedMotionResult::InGround => None,
+        GroundedMotionResult::InAir => Some(FighterState::Fall(fall::FallState::new(
+            air::AirborneStateCommon::default(),
+        ))),
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::fighter::ecb::FighterPreviousECB;
+    use crate::fighter::{FighterECB, FighterSurfaceState};
+    use crate::stage::line::StagePolyType;
+
+    fn two_segment_floor() -> StagePoly {
+        StagePoly::build(
+            StagePolyType::Platform,
+            &[
+                (FGVec2::lit("0", "0"), StagePolyLineSegmentType::Floor),
+                (FGVec2::lit("10", "0"), StagePolyLineSegmentType::Floor),
+                (FGVec2::lit("20", "0"), StagePolyLineSegmentType::Floor),
+            ],
+        )
+    }
+
+    #[test]
+    fn tiny_endpoint_crossing_moves_to_adjacent_floor() {
+        let stage = two_segment_floor();
+        let point = FGVec2::new(FGi32::from_bits(10 * 65_536 + 1), FGi32::ZERO);
+
+        let GroundedPositionResult::InGround {
+            point: resolved,
+            segment_idx,
+            blocked,
+        } = resolve_grounded_position(&stage, 0, point, false)
+        else {
+            panic!("connected floor should remain grounded");
+        };
+
+        assert_eq!(segment_idx, 1);
+        assert_eq!(resolved, point);
+        assert!(!blocked);
+    }
+
+    #[test]
+    fn blocked_edge_keeps_floor_and_can_move_inward() {
+        let stage = StagePoly::build(
+            StagePolyType::Platform,
+            &[
+                (FGVec2::lit("0", "0"), StagePolyLineSegmentType::Floor),
+                (FGVec2::lit("10", "0"), StagePolyLineSegmentType::Wall),
+                (FGVec2::lit("10", "-2"), StagePolyLineSegmentType::Ceiling),
+            ],
+        );
+        let just_past_edge = FGVec2::new(FGi32::from_bits(10 * 65_536 + 1), FGi32::ZERO);
+
+        let GroundedPositionResult::InGround {
+            point,
+            segment_idx,
+            blocked,
+        } = resolve_grounded_position(&stage, 0, just_past_edge, false)
+        else {
+            panic!("non-walk-off movement should stop at the edge");
+        };
+        assert_eq!(point, FGVec2::lit("10", "0"));
+        assert_eq!(segment_idx, 0);
+        assert!(blocked);
+
+        let GroundedPositionResult::InGround {
+            point,
+            segment_idx,
+            blocked,
+        } = resolve_grounded_position(
+            &stage,
+            segment_idx,
+            FGVec2::new(FGi32::from_bits(10 * 65_536 - 1), FGi32::ZERO),
+            false,
+        )
+        else {
+            panic!("fighter should be able to move back from the edge");
+        };
+        assert!(point.x < FGi32::lit("10"));
+        assert_eq!(segment_idx, 0);
+        assert!(!blocked);
+    }
+
+    #[test]
+    fn walk_off_edge_enters_air() {
+        let stage = StagePoly::build(
+            StagePolyType::Platform,
+            &[
+                (FGVec2::lit("0", "0"), StagePolyLineSegmentType::Floor),
+                (FGVec2::lit("10", "0"), StagePolyLineSegmentType::Floor),
+            ],
+        );
+        let just_past_edge = FGVec2::new(FGi32::from_bits(10 * 65_536 + 1), FGi32::ZERO);
+
+        assert!(matches!(
+            resolve_grounded_position(&stage, 0, just_past_edge, true),
+            GroundedPositionResult::InAir
+        ));
+    }
+
+    #[test]
+    fn vertical_segment_cannot_hold_grounded_fighter() {
+        let stage = StagePoly::build(
+            StagePolyType::Platform,
+            &[
+                (FGVec2::lit("10", "0"), StagePolyLineSegmentType::Floor),
+                (FGVec2::lit("10", "-2"), StagePolyLineSegmentType::Floor),
+            ],
+        );
+
+        assert!(matches!(
+            resolve_grounded_position(&stage, 0, FGVec2::lit("10", "0"), false),
+            GroundedPositionResult::InAir
+        ));
+    }
+
+    #[test]
+    fn grounded_collision_updates_surface_segment() {
+        let stage_collision = crate::stage::line::StageCollision {
+            stage_polys: vec![two_segment_floor()],
+        };
+        let mut surface = FighterSurfaceState::Grounded {
+            line_id: StageLineID {
+                polygon: 0,
+                segment: 0,
+            },
+        };
+        let mut translation = FighterTranslation(FGVec2::lit("11", "0"));
+        let previous_translation = FighterPreviousTranslation(translation.0);
+        let mut velocity = FighterVelocity::default();
+        let mut ecb = FighterECB {
+            bottom: FGVec2::lit("0.0", "-0.5"),
+            top: FGVec2::lit("0.0", "0.5"),
+            left: FGVec2::lit("-0.5", "0.0"),
+            right: FGVec2::lit("0.5", "0.0"),
+        };
+        let previous_ecb = FighterPreviousECB::from(ecb);
+        let mut context = CollisionContext {
+            translation: &mut translation,
+            prev_translation: &previous_translation,
+            velocity: &mut velocity,
+            surface: &mut surface,
+            ecb: &mut ecb,
+            prev_ecb: &previous_ecb,
+            stage_collision: &stage_collision,
+            leave_ground_ecb_lock_duration: 10,
+        };
+
+        assert!(matches!(
+            collide_with_stage_grounded(&mut context, true),
+            GroundedMotionResult::InGround
+        ));
+        assert_eq!(
+            surface.line_id(),
+            Some(StageLineID {
+                polygon: 0,
+                segment: 1,
+            })
+        );
+    }
+
+    #[test]
+    fn walking_off_edge_clears_surface_contact() {
+        let stage_collision = crate::stage::line::StageCollision {
+            stage_polys: vec![StagePoly::build(
+                StagePolyType::Platform,
+                &[
+                    (FGVec2::lit("0", "0"), StagePolyLineSegmentType::Floor),
+                    (FGVec2::lit("10", "0"), StagePolyLineSegmentType::Floor),
+                ],
+            )],
+        };
+        let mut surface = FighterSurfaceState::Grounded {
+            line_id: StageLineID {
+                polygon: 0,
+                segment: 0,
+            },
+        };
+        let mut translation = FighterTranslation(FGVec2::lit("11", "0"));
+        let previous_translation = FighterPreviousTranslation(translation.0);
+        let mut velocity = FighterVelocity::default();
+        let mut ecb = FighterECB {
+            bottom: FGVec2::lit("0.0", "-0.5"),
+            top: FGVec2::lit("0.0", "0.5"),
+            left: FGVec2::lit("-0.5", "0.0"),
+            right: FGVec2::lit("0.5", "0.0"),
+        };
+        let previous_ecb = FighterPreviousECB::from(ecb);
+        let mut context = CollisionContext {
+            translation: &mut translation,
+            prev_translation: &previous_translation,
+            velocity: &mut velocity,
+            surface: &mut surface,
+            ecb: &mut ecb,
+            prev_ecb: &previous_ecb,
+            stage_collision: &stage_collision,
+            leave_ground_ecb_lock_duration: 10,
+        };
+
+        assert!(matches!(
+            collide_with_stage_grounded(&mut context, true),
+            GroundedMotionResult::InAir
+        ));
+        assert!(matches!(surface, FighterSurfaceState::Airborne { .. }));
+    }
+}
+
 pub fn grounded_movement_common_interrupts(
-    state_context: &FighterStateContext,
-    ground_common: &GroundedStateCommon,
+    state_context: &InterruptContext,
 ) -> Option<FighterState> {
-    super::jump::check_input(state_context, ground_common)
+    super::jump::check_input(state_context)
 }

 pub fn grounded_movement_standstill_common_interrupts(
-    state_context: &FighterStateContext,
-    ground_common: &GroundedStateCommon,
+    state_context: &InterruptContext,
 ) -> Option<FighterState> {
-    if let Some(state) = ground_attack::check_interrupt(state_context, &ground_common) {
+    if let Some(state) = ground_attack::check_interrupt(state_context) {
        Some(state)
-    } else if let Some(state) = dash::check_input(state_context, &ground_common) {
+    } else if let Some(state) = dash::check_input(state_context) {
        Some(state)
-    } else if let Some(state) = turn::check_input(state_context, &ground_common) {
+    } else if let Some(state) = turn::check_input(state_context) {
        Some(state)
-    } else if let Some(state) = walk::check_input(state_context, &ground_common) {
+    } else if let Some(state) = crouch::check_input(state_context) {
        Some(state)
-    } else if let Some(state) = wait::check_input(state_context, &ground_common) {
+    } else if let Some(state) = walk::check_input(state_context) {
+        Some(state)
+    } else if let Some(state) = wait::check_input(state_context) {
        Some(state)
    } else {
        None
@@ -1,80 +1,86 @@
-use fixed::types::I16F16;
-
-use crate::{
-    fighter::{
-        attack::{AttackKind, update_active_hitbox_list},
-        state::{FighterState, FighterStateImpl, ground::GroundedStateCommon, wait::WaitState},
+use crate::fighter::{
+    attack::{AttackKind, update_active_hitbox_list},
+    state::{
+        CollisionContext, EnterContext, ExitContext, FighterState, FighterStateImpl,
+        InterruptContext, UpdateContext, wait::WaitState,
    },
-    math::int::FGi32,
 };

 #[derive(Clone, Debug, Hash)]
 pub struct GroundAttackState {
    pub attack_kind: AttackKind,
-    pub grounded_common: GroundedStateCommon,
 }

 impl FighterStateImpl for GroundAttackState {
    const NAME: &'static str = "GroundAttack";

-    fn check_interrupt(
-        &self,
-        state_context: &mut super::FighterStateContext,
-    ) -> Option<FighterState> {
+    fn check_interrupt(&self, state_context: &mut InterruptContext) -> Option<FighterState> {
        if state_context.is_current_animation_finished() {
-            Some(FighterState::Wait(WaitState {
-                grounded_common: self.grounded_common.clone(),
-            }))
+            Some(FighterState::Wait(WaitState))
        } else {
            None
        }
    }

-    fn update(&mut self, state_context: &mut super::FighterStateContext) {
+    fn update(&mut self, state_context: &mut UpdateContext) {
+        let animation_frame = state_context.get_current_animation_frame();
        let script = state_context
            .attack_scripts
            .get(&state_context.attack_script_assets.scripts[&self.attack_kind]);
        if let Some(script) = script {
-            let animation_frame = state_context.get_current_animation_frame();
            update_active_hitbox_list(
                script,
-                &mut state_context.hitboxes.active_hitboxes,
+                &mut state_context
+                    .hitboxes
+                    .0
+                    .as_mut()
+                    .expect("ground attack must have active hitboxes")
+                    .active_hitboxes,
                animation_frame,
            );
        }
    }

-    fn on_enter(&mut self, state_context: &mut super::FighterStateContext) {
+    fn on_enter(&mut self, state_context: &mut EnterContext) {
        state_context.play_animation(self.attack_kind.get_animation(), false);
-        state_context.hitboxes.attack_script =
-            Some(state_context.attack_script_assets.scripts[&self.attack_kind].clone());
-        state_context.hitboxes.active_hitboxes.clear();
+        let script = state_context.attack_script_assets.scripts[&self.attack_kind].clone();
+        state_context.hitboxes.0 = Some(crate::fighter::FighterActiveAttack {
+            kind: self.attack_kind,
+            script,
+            active_hitboxes: Vec::new(),
+            solved_hitboxes: Vec::new(),
+            hit_fighters: Vec::new(),
+            stalled: false,
+        });
    }

-    fn on_exit(&mut self, state_context: &mut super::FighterStateContext) {
-        state_context.hitboxes.clear();
+    fn on_exit(&mut self, state_context: &mut ExitContext) {
+        state_context.hitboxes.0 = None;
    }

    fn check_collision_interrupt(
        &mut self,
-        _state_context: &mut super::FighterStateContext,
+        _state_context: &mut CollisionContext,
    ) -> Option<FighterState> {
        None
    }
+
+    fn is_visually_grounded<'a>(&'a self) -> bool {
+        true
+    }
 }

-pub fn check_interrupt(
-    state_context: &super::FighterStateContext,
-    grounded_common: &GroundedStateCommon,
-) -> Option<FighterState> {
+pub fn check_interrupt(state_context: &InterruptContext) -> Option<FighterState> {
    if state_context
        .input
        .has_command(crate::input::FighterCommands::Attack)
    {
-        let attack_kind = state_context.input.get_attack_command_type().to_attack_kind_grounded();
+        let attack_kind = state_context
+            .input
+            .get_attack_command_type()
+            .to_attack_kind_grounded();
        Some(FighterState::GroundAttack(GroundAttackState {
            attack_kind,
-            grounded_common: grounded_common.clone(),
        }))
    } else {
        None
@@ -0,0 +1,137 @@
+use crate::{
+    fighter::{
+        animation::AnimKind,
+        attack::{self, FighterHitReaction},
+        state::{
+            CollisionContext, EnterContext, ExitContext, FighterState, FighterStateImpl,
+            InterruptContext, UpdateContext,
+            air::{self, AirborneStateCommon},
+            fall::FallState,
+            ground::collision_interrupt,
+            land::LandingType,
+            wait::WaitState,
+        },
+    },
+    math::int::FGi32,
+};
+
+#[derive(Clone, Debug, Hash)]
+pub enum HitstopStateKind {
+    Grounded,
+    Airborne,
+}
+
+#[derive(Clone, Debug, Hash)]
+pub struct HitstunState {
+    pub hit_reaction: FighterHitReaction,
+    pub hitstop_kind: HitstopStateKind,
+    knockback_applied: bool,
+}
+
+impl HitstunState {
+    pub fn new(hit_reaction: FighterHitReaction, hitstop_kind: HitstopStateKind) -> Self {
+        Self {
+            hit_reaction,
+            hitstop_kind,
+            knockback_applied: false,
+        }
+    }
+}
+
+impl FighterStateImpl for HitstunState {
+    const NAME: &'static str = "Hitstun";
+
+    fn name(&self) -> String {
+        let hitstop_kind = match self.hitstop_kind {
+            HitstopStateKind::Grounded => "Grounded",
+            HitstopStateKind::Airborne => "Airborne",
+        };
+
+        let hit_reaction_type = match &self.hit_reaction.kind {
+            crate::fighter::attack::HitReactionKind::Flinch => "Flinch",
+            crate::fighter::attack::HitReactionKind::Tumble => "Tumble",
+        };
+
+        format!("Hitstun ({hitstop_kind}, {hit_reaction_type})")
+    }
+
+    fn check_interrupt(&self, state_context: &mut InterruptContext) -> Option<FighterState> {
+        if state_context.get_current_animation_frame() > self.hit_reaction.hitstun_frames {
+            match &self.hitstop_kind {
+                HitstopStateKind::Grounded => Some(FighterState::Wait(WaitState)),
+                HitstopStateKind::Airborne => Some(FighterState::Fall(FallState::new(
+                    AirborneStateCommon::default(),
+                ))),
+            }
+        } else {
+            None
+        }
+    }
+
+    fn update(&mut self, ctx: &mut UpdateContext) {
+        if !self.knockback_applied {
+            let launch_direction = attack::directional_influence::apply_directional_influence(
+                ctx.input.get_last_frame().movement,
+                self.hit_reaction.launch_angle,
+                ctx.game_settings.fighter_common.di_max_angle,
+            );
+
+            ctx.knockback_velocity.0 = launch_direction * self.hit_reaction.launch_velocity;
+            self.knockback_applied = true;
+        }
+
+        match self.hitstop_kind {
+            HitstopStateKind::Grounded => {}
+            HitstopStateKind::Airborne => {
+                air::integrate_gravity(ctx.velocity, ctx.fighter_attributes, false);
+            }
+        }
+
+        let speed = ctx.knockback_velocity.length();
+        let next_speed = speed
+            .saturating_sub(ctx.game_settings.fighter_common.knockback_decay_per_frame)
+            .max(FGi32::ZERO);
+
+        ctx.knockback_velocity.0 = ctx.knockback_velocity.normalize_or_zero() * next_speed;
+
+        ctx.translation.0 += ctx.velocity.0 + ctx.knockback_velocity.0;
+    }
+
+    fn on_enter(&mut self, state_context: &mut EnterContext) {
+        let animation = match self.hitstop_kind {
+            HitstopStateKind::Grounded => AnimKind::FlinchGround,
+            HitstopStateKind::Airborne => AnimKind::FlinchAir,
+        };
+        state_context.play_animation(animation, false);
+    }
+
+    fn on_exit(&mut self, _state_context: &mut ExitContext) {}
+
+    fn check_collision_interrupt(
+        &mut self,
+        state_context: &mut CollisionContext,
+    ) -> Option<FighterState> {
+        match &mut self.hitstop_kind {
+            HitstopStateKind::Grounded => collision_interrupt(state_context, true),
+            HitstopStateKind::Airborne => {
+                air::collision_interrupt(state_context, LandingType::Normal)
+            }
+        }
+    }
+
+    fn is_visually_grounded<'a>(&'a self) -> bool {
+        match self.hitstop_kind {
+            HitstopStateKind::Grounded => true,
+            HitstopStateKind::Airborne => false,
+        }
+    }
+
+    fn surface_policy(&self) -> super::SurfacePolicy {
+        match self.hitstop_kind {
+            HitstopStateKind::Grounded => super::SurfacePolicy::Grounded,
+            HitstopStateKind::Airborne => super::SurfacePolicy::Airborne(
+                crate::fighter::surface::EcbLockPolicy::StartOnDetach,
+            ),
+        }
+    }
+}
@@ -3,13 +3,12 @@ use bevy::prelude::*;
 use crate::{
    fighter::{
        animation::AnimKind,
-        collision,
        state::{
-            FighterState, FighterStateContext, FighterStateImpl, air,
+            CollisionContext, EnterContext, FighterState, FighterStateImpl, InterruptContext,
+            UpdateContext,
+            air::{self, AirborneStateCommon},
            air_dodge::{self, AirDodgeState},
-            fall::FallState,
-            ground::{self, GroundedMotionResult, GroundedStateCommon},
-            land::LandingState,
+            ground,
        },
    },
    input::FighterCommands,
@@ -25,18 +24,17 @@ pub enum JumpType {
 #[derive(Debug, Clone, Hash)]
 pub struct JumpState {
    jump_type: JumpType,
+    airborne_state_common: AirborneStateCommon,
 }

 #[derive(Debug, Clone, Hash)]
 pub struct JumpSquatState {
-    pub grounded_common: GroundedStateCommon,
    pub duration_counter: u32,
 }

 impl JumpSquatState {
-    pub fn create(grounded_common: GroundedStateCommon) -> Self {
+    pub fn create() -> Self {
        Self {
-            grounded_common,
            duration_counter: 0,
        }
    }
@@ -45,7 +43,7 @@ impl JumpSquatState {
 impl FighterStateImpl for JumpSquatState {
    const NAME: &'static str = "JumpSquat";

-    fn check_interrupt(&self, state_context: &mut FighterStateContext) -> Option<FighterState> {
+    fn check_interrupt(&self, state_context: &mut InterruptContext) -> Option<FighterState> {
        // Special handling for wavedash from jump squat
        if state_context.input.has_command(FighterCommands::Shield) {
            // If aiming sideways and in the deadzone, do a perfect wavedash
@@ -69,96 +67,62 @@ impl FighterStateImpl for JumpSquatState {
            Some(FighterState::AirDodge(AirDodgeState {
                direction: wavedash_dir.normalize_or_zero(),
            }))
-        } else if self.duration_counter
-            >= state_context.fighter_manifest.attributes.jumpsquat_duration
-        {
+        } else if self.duration_counter >= state_context.fighter_attributes.jumpsquat_duration {
            info!("Jump {}", state_context.input.get_last_frame().jump);
            let jump_type = if state_context.input.get_last_frame().jump {
                JumpType::LongJump
            } else {
                JumpType::ShortHop
            };
-            Some(FighterState::Jump(JumpState { jump_type }))
+            Some(FighterState::Jump(JumpState {
+                jump_type,
+                airborne_state_common: AirborneStateCommon::default(),
+            }))
        } else {
            None
        }
    }

-    fn update(&mut self, state_context: &mut FighterStateContext) {
+    fn update(&mut self, state_context: &mut UpdateContext) {
        self.duration_counter += 1;
-
-        let friction = if state_context.velocity.x.abs()
-            > state_context.fighter_manifest.attributes.max_walk_vel
-        {
-            state_context.fighter_manifest.attributes.ground_friction
-                * state_context
-                    .game_settings
-                    .fighter_common
-                    .ground_friction_over_walk_speed_multiplier
-        } else {
-            state_context.fighter_manifest.attributes.ground_friction
-        };
-
-        let ground_velocity = state_context.velocity.x;
-
-        state_context.velocity.x += ground::apply_grounded_friction(friction, ground_velocity);
-
-        ground::apply_grounded_motion(
-            state_context.velocity,
-            state_context.translation,
-            state_context.prev_translation,
-        );
+        ground::update_friction_motion(state_context);
    }

    fn check_collision_interrupt(
        &mut self,
-        state_context: &mut FighterStateContext,
+        state_context: &mut CollisionContext,
    ) -> Option<FighterState> {
-        if let GroundedMotionResult::InAir =
-            ground::collide_with_stage_grounded(state_context, &mut self.grounded_common, false)
-        {
-            Some(FighterState::Fall(FallState))
-        } else {
-            None
-        }
+        ground::collision_interrupt(state_context, false)
    }

-    fn on_enter(&mut self, state_context: &mut FighterStateContext) {
+    fn on_enter(&mut self, state_context: &mut EnterContext) {
        state_context.play_animation(AnimKind::JumpSquat, false);
        state_context.input.clear_command(FighterCommands::Jump);
    }
+
+    fn is_visually_grounded<'a>(&'a self) -> bool {
+        true
+    }
 }

 impl FighterStateImpl for JumpState {
    const NAME: &'static str = "Jump";
-    fn check_interrupt(&self, state_context: &mut FighterStateContext) -> Option<FighterState> {
+    fn check_interrupt(&self, state_context: &mut InterruptContext) -> Option<FighterState> {
        if state_context.input.has_command(FighterCommands::Jump) {
            Some(FighterState::Jump(JumpState {
                jump_type: JumpType::DoubleJump,
+                airborne_state_common: AirborneStateCommon::default(),
            }))
        } else {
            air_dodge::check_input(state_context)
        }
    }

-    fn update(&mut self, state_context: &mut FighterStateContext) {
-        air::integrate_gravity(
-            state_context.velocity,
-            &state_context.fighter_manifest.attributes,
-        );
-        air::apply_air_drift(
-            state_context.velocity,
-            &state_context.fighter_manifest.attributes,
-            state_context.input,
-        );
-        air::apply_air_motion(
-            state_context.velocity,
-            state_context.translation,
-            state_context.prev_translation,
-        );
+    fn update(&mut self, state_context: &mut UpdateContext) {
+        air::update_standard_motion(state_context, &mut self.airborne_state_common);
    }

-    fn on_enter(&mut self, state_context: &mut FighterStateContext) {
+    fn on_enter(&mut self, state_context: &mut EnterContext) {
        if let JumpType::DoubleJump = self.jump_type {
            state_context.input.clear_command(FighterCommands::Jump);
        }
@@ -174,47 +138,33 @@ impl FighterStateImpl for JumpState {
                }
            }
            JumpType::DoubleJump => {
-                state_context.play_animation(AnimKind::DoubleJump, false);
+                if movement_stick_x.is_zero()
+                    || movement_stick_x.signum() == state_context.facing_direction.to_sign()
+                {
+                    state_context.play_animation(AnimKind::DoubleJumpForward, false);
+                } else {
+                    state_context.play_animation(AnimKind::DoubleJumpBack, false);
+                }
            }
        }

        let vertical_vel = match self.jump_type {
-            JumpType::ShortHop => {
-                state_context
-                    .fighter_manifest
-                    .attributes
-                    .short_hop_vertical_velocity
-            }
-            JumpType::LongJump => {
-                state_context
-                    .fighter_manifest
-                    .attributes
-                    .full_jump_vertical_velocity
-            }
+            JumpType::ShortHop => state_context.fighter_attributes.short_hop_vertical_velocity,
+            JumpType::LongJump => state_context.fighter_attributes.full_jump_vertical_velocity,
            JumpType::DoubleJump => {
-                state_context
-                    .fighter_manifest
-                    .attributes
-                    .full_jump_vertical_velocity
-                    * state_context
-                        .fighter_manifest
-                        .attributes
-                        .air_jump_multiplier
+                state_context.fighter_attributes.full_jump_vertical_velocity
+                    * state_context.fighter_attributes.air_jump_multiplier
            }
        };

        match self.jump_type {
            JumpType::ShortHop | JumpType::LongJump => {
-                state_context.velocity.x += state_context
-                    .fighter_manifest
-                    .attributes
-                    .jump_horizontal_velocity
-                    * movement_stick_x;
+                state_context.velocity.x +=
+                    state_context.fighter_attributes.jump_horizontal_velocity * movement_stick_x;
            }
            JumpType::DoubleJump => {
                state_context.velocity.x = state_context
-                    .fighter_manifest
-                    .attributes
+                    .fighter_attributes
                    .air_jump_horizontal_velocity
                    * movement_stick_x;
            }
@@ -225,38 +175,44 @@ impl FighterStateImpl for JumpState {

    fn check_collision_interrupt(
        &mut self,
-        state_context: &mut FighterStateContext,
+        state_context: &mut CollisionContext,
    ) -> Option<FighterState> {
-        if let Some(res) = collision::air_collide_with_stage(state_context) {
-            // Adjust translation
-            state_context.translation.0 = res.hit_position - state_context.ecb.get_bottom_point();
-            let grounded_common = GroundedStateCommon {
-                current_line_id: res.line_id,
-            };
-            Some(FighterState::Land(LandingState { grounded_common }))
-        } else {
-            None
+        air::collision_interrupt(
+            state_context,
+            crate::fighter::state::land::LandingType::Normal,
+        )
+    }
+
+    fn is_visually_grounded<'a>(&'a self) -> bool {
+        false
+    }
+
+    fn surface_policy(&self) -> super::SurfacePolicy {
+        use crate::fighter::surface::EcbLockPolicy;
+        match self.jump_type {
+            JumpType::DoubleJump => super::SurfacePolicy::Airborne(EcbLockPolicy::Restart),
+            JumpType::ShortHop | JumpType::LongJump => {
+                super::SurfacePolicy::Airborne(EcbLockPolicy::StartOnDetach)
+            }
        }
    }
 }

-pub fn check_input(
-    state_context: &FighterStateContext,
-    ground_common: &GroundedStateCommon,
-) -> Option<FighterState> {
+pub fn check_input(state_context: &InterruptContext) -> Option<FighterState> {
    state_context
        .input
        .has_command(FighterCommands::Jump)
-        .then(|| FighterState::JumpSquat(JumpSquatState::create(ground_common.clone())))
+        .then(|| FighterState::JumpSquat(JumpSquatState::create()))
 }

-pub fn check_input_double_jump(state_context: &FighterStateContext) -> Option<FighterState> {
+pub fn check_input_double_jump(state_context: &InterruptContext) -> Option<FighterState> {
    state_context
        .input
        .has_command(FighterCommands::Jump)
        .then(|| {
            FighterState::Jump(JumpState {
                jump_type: JumpType::DoubleJump,
+                airborne_state_common: AirborneStateCommon::default(),
            })
        })
 }
@@ -1,83 +1,72 @@
 use crate::fighter::{
    animation::AnimKind,
    state::{
-        FighterState, FighterStateContext, FighterStateImpl, dash,
-        fall::FallState,
-        ground::{
-            self, GroundedMotionResult, GroundedStateCommon,
-            grounded_movement_standstill_common_interrupts,
-        },
+        CollisionContext, EnterContext, FighterState, FighterStateImpl, InterruptContext,
+        UpdateContext, dash,
+        ground::{self, grounded_movement_standstill_common_interrupts},
        walk,
    },
 };

+#[derive(Debug, Clone, Hash)]
+pub enum LandingType {
+    Normal,
+    Special,
+}
+
 #[derive(Debug, Clone, Hash)]
 pub struct LandingState {
-    pub grounded_common: GroundedStateCommon,
+    pub landing_type: LandingType,
 }

 impl LandingState {
-    pub fn create(grounded_common: GroundedStateCommon) -> Self {
-        Self { grounded_common }
+    pub fn create(landing_type: LandingType) -> Self {
+        Self { landing_type }
    }
 }

 impl FighterStateImpl for LandingState {
    const NAME: &'static str = "Landing";

-    fn check_interrupt(&self, state_context: &mut FighterStateContext) -> Option<FighterState> {
+    fn check_interrupt(&self, state_context: &mut InterruptContext) -> Option<FighterState> {
        if state_context.is_current_animation_finished() {
-            grounded_movement_standstill_common_interrupts(state_context, &self.grounded_common)
+            grounded_movement_standstill_common_interrupts(state_context)
        } else if state_context.get_current_animation_frame()
-            >= state_context.fighter_manifest.attributes.landing_iasa
+            >= state_context.fighter_attributes.landing_iasa
+            && let LandingType::Normal = self.landing_type
        {
-            dash::check_input(state_context, &self.grounded_common).or_else(|| {
-                ground::grounded_movement_common_interrupts(state_context, &self.grounded_common)
-                    .or_else(|| walk::check_input(state_context, &self.grounded_common))
+            dash::check_input(state_context).or_else(|| {
+                ground::grounded_movement_common_interrupts(state_context)
+                    .or_else(|| walk::check_input(state_context))
            })
        } else {
            None
        }
    }

-    fn update(&mut self, state_context: &mut FighterStateContext) {
-        let friction = if state_context.velocity.x.abs()
-            > state_context.fighter_manifest.attributes.max_walk_vel
-        {
-            state_context.fighter_manifest.attributes.ground_friction
-                * state_context
-                    .game_settings
-                    .fighter_common
-                    .ground_friction_over_walk_speed_multiplier
-        } else {
-            state_context.fighter_manifest.attributes.ground_friction
-        };
-
-        let ground_velocity = state_context.velocity.x;
-
-        state_context.velocity.x += ground::apply_grounded_friction(friction, ground_velocity);
-
-        ground::apply_grounded_motion(
-            state_context.velocity,
-            state_context.translation,
-            state_context.prev_translation,
-        );
+    fn update(&mut self, state_context: &mut UpdateContext) {
+        ground::update_friction_motion(state_context);
    }

    fn check_collision_interrupt(
        &mut self,
-        state_context: &mut FighterStateContext,
+        state_context: &mut CollisionContext,
    ) -> Option<FighterState> {
-        if let GroundedMotionResult::InAir =
-            ground::collide_with_stage_grounded(state_context, &mut self.grounded_common, false)
-        {
-            Some(FighterState::Fall(FallState))
-        } else {
-            None
-        }
+        ground::collision_interrupt(state_context, true)
    }

-    fn on_enter(&mut self, state_context: &mut FighterStateContext) {
-        state_context.play_animation(AnimKind::Landing, false);
+    fn on_enter(&mut self, state_context: &mut EnterContext) {
+        match self.landing_type {
+            LandingType::Normal => {
+                state_context.play_animation(AnimKind::Landing, false);
+            }
+            LandingType::Special => {
+                state_context.play_animation(AnimKind::LandingSpecial, false);
+            }
+        };
+    }
+
+    fn is_visually_grounded<'a>(&'a self) -> bool {
+        true
    }
 }
@@ -6,17 +6,25 @@ use bevy::ecs::query::QueryData;
 use bevy::prelude::*;

 use crate::fighter::animation::{AnimKind, FighterAnimationFrame};
-use crate::fighter::attack::FighterAttackScriptAssets;
+use crate::fighter::attack::{
+    FighterAttackScriptAssets, FighterKnockbackVelocity, FighterPendingHitReaction,
+    FighterStaleMoveQueue, HitStop,
+};
+use crate::fighter::attributes::FighterAttributes;
 use crate::fighter::baked_animation::BakedFighterAnimations;
 use crate::fighter::ecb::FighterPreviousECB;
 use crate::fighter::manifest::FighterManifest;
+use crate::fighter::state::hitstun::HitstunState;
 use crate::fighter::visual::FighterAnimations;
 use crate::fighter::{
-    Fighter, FighterECB, FighterFacingDirection, FighterHitboxes, FighterPreviousTranslation,
-    FighterTranslation, FighterVelocity,
+    Fighter, FighterECB, FighterFacingDirection, FighterHitboxes, FighterHitstop,
+    FighterHitstopShake, FighterHitstopShakeKind, FighterHitstopShakeRole,
+    FighterPreviousTranslation, FighterSurfaceState, FighterTranslation, FighterVelocity,
 };
+use crate::fighter::surface::EcbLockPolicy;
 use crate::game_settings::GameSettings;
 use crate::input::FighterInput;
+use crate::math::int::FGi32;
 use crate::scripting::FighterAttackScript;
 use crate::stage::line::StageCollision;

@@ -26,12 +34,20 @@ pub mod dash;
 pub mod fall;
 pub mod ground;
 pub mod ground_attack;
+pub mod hitstun;
 pub mod jump;
 pub mod land;
 pub mod run;
 pub mod turn;
 pub mod wait;
 pub mod walk;
+pub mod crouch;
+
+#[derive(Clone, Copy, Debug, Hash, PartialEq, Eq)]
+pub enum SurfacePolicy {
+    Grounded,
+    Airborne(EcbLockPolicy),
+}

 macro_rules! fighter_states {
    ($($variant:ident => $ty:ty),* $(,)?) => {
@@ -42,24 +58,32 @@ macro_rules! fighter_states {
            pub fn name(&self) -> &'static str {
                match self { $(Self::$variant(_) => <$ty>::NAME),* }
            }
-            pub fn check_interrupt(&self, ctx: &mut FighterStateContext) -> Option<FighterState> {
+            pub fn check_interrupt(&self, ctx: &mut InterruptContext) -> Option<FighterState> {
                match self { $(Self::$variant(s) => s.check_interrupt(ctx)),* }
            }

-            pub fn update(&mut self, ctx: &mut FighterStateContext) {
+            pub fn update(&mut self, ctx: &mut UpdateContext) {
                match self { $(Self::$variant(s) => s.update(ctx)),* }
            }
-            pub fn on_enter(&mut self, ctx: &mut FighterStateContext) {
+            pub fn on_enter(&mut self, ctx: &mut EnterContext) {
                match self { $(Self::$variant(s) => s.on_enter(ctx)),* }
            }

-            pub fn on_exit(&mut self, ctx: &mut FighterStateContext) {
+            pub fn on_exit(&mut self, ctx: &mut ExitContext) {
                match self { $(Self::$variant(s) => s.on_exit(ctx)),* }
            }

-            pub fn check_collision_interrupt(&mut self, ctx: &mut FighterStateContext) -> Option<FighterState> {
+            pub fn check_collision_interrupt(&mut self, ctx: &mut CollisionContext) -> Option<FighterState> {
                match self { $(Self::$variant(s) => s.check_collision_interrupt(ctx)),* }
            }
+
+            pub fn is_visually_grounded(&self) -> bool {
+                match self { $(Self::$variant(s) => s.is_visually_grounded()),* }
+            }
+
+            pub fn surface_policy(&self) -> SurfacePolicy {
+                match self { $(Self::$variant(s) => s.surface_policy()),* }
+            }
        }

        $(impl From<$ty> for FighterState {
@@ -70,63 +94,125 @@ macro_rules! fighter_states {

 pub trait FighterStateImpl: Sized {
    const NAME: &'static str;
-    fn check_interrupt(&self, state_context: &mut FighterStateContext) -> Option<FighterState>;
+    fn check_interrupt(&self, state_context: &mut InterruptContext) -> Option<FighterState>;

-    fn on_enter(&mut self, _state_context: &mut FighterStateContext) {}
-    fn on_exit(&mut self, _state_context: &mut FighterStateContext) {}
-    fn update(&mut self, _state_context: &mut FighterStateContext);
+    fn on_enter(&mut self, _state_context: &mut EnterContext) {}
+    fn on_exit(&mut self, _state_context: &mut ExitContext) {}
+    fn name(&self) -> String {
+        Self::NAME.to_owned()
+    }
+    fn update(&mut self, _state_context: &mut UpdateContext);

    fn check_collision_interrupt(
        &mut self,
-        _state_context: &mut FighterStateContext,
+        _state_context: &mut CollisionContext,
    ) -> Option<FighterState> {
        None
    }
+
+    fn is_visually_grounded<'a>(&'a self) -> bool;
+
+    fn surface_policy(&self) -> SurfacePolicy {
+        SurfacePolicy::Grounded
+    }
 }

-pub struct FighterStateContext<'a> {
+pub struct AnimationStatus {
+    pub frame: u32,
+    pub finished: bool,
+}
+
+pub struct InterruptContext<'a> {
+    pub input: &'a FighterInput,
+    pub facing_direction: &'a mut FighterFacingDirection,
+    pub game_settings: &'a GameSettings,
+    pub fighter_attributes: &'a FighterAttributes,
+    pub animation: AnimationStatus,
+}
+
+impl InterruptContext<'_> {
+    pub fn get_current_animation_frame(&self) -> u32 {
+        self.animation.frame
+    }
+
+    pub fn is_current_animation_finished(&self) -> bool {
+        self.animation.finished
+    }
+}
+
+pub struct EnterContext<'a> {
+    pub input: &'a mut FighterInput,
+    pub hitboxes: &'a mut FighterHitboxes,
+    pub velocity: &'a mut FighterVelocity,
+    pub knockback_velocity: &'a mut FighterKnockbackVelocity,
+    pub stale_move_queue: &'a mut FighterStaleMoveQueue,
+    pub facing_direction: &'a mut FighterFacingDirection,
+    pub animation_frame: &'a mut FighterAnimationFrame,
+    pub fighter_attributes: &'a FighterAttributes,
+    pub attack_script_assets: &'a FighterAttackScriptAssets,
+}
+
+impl EnterContext<'_> {
+    pub fn play_animation(&mut self, kind: AnimKind, repeat: bool) {
+        self.animation_frame.reset(kind, repeat);
+    }
+}
+
+pub struct ExitContext<'a> {
+    pub hitboxes: &'a mut FighterHitboxes,
+}
+
+pub struct UpdateContext<'a> {
    pub translation: &'a mut FighterTranslation,
    pub prev_translation: &'a mut FighterPreviousTranslation,
    pub input: &'a mut FighterInput,
    pub hitboxes: &'a mut FighterHitboxes,
    pub velocity: &'a mut FighterVelocity,
-    pub ecb: &'a mut FighterECB,
-    pub prev_ecb: &'a mut FighterPreviousECB,
-    pub facing_direction: &'a mut FighterFacingDirection,
+    pub surface: &'a mut FighterSurfaceState,
+    pub knockback_velocity: &'a mut FighterKnockbackVelocity,
    pub game_settings: &'a GameSettings,
-    pub stage_collision: &'a StageCollision,
-    pub animations: &'a FighterAnimations,
-    pub animation_frame: &'a mut FighterAnimationFrame,
-    pub baked_animations: &'a Assets<BakedFighterAnimations>,
+    pub animation_frame: u32,
+    pub fighter_attributes: &'a FighterAttributes,
    pub attack_scripts: &'a Assets<FighterAttackScript>,
-    pub fighter_manifest: &'a FighterManifest,
    pub attack_script_assets: &'a FighterAttackScriptAssets,
+    pub facing_direction: &'a FighterFacingDirection,
 }

-impl FighterStateContext<'_> {
-    pub fn play_animation(&mut self, kind: AnimKind, repeat: bool) {
-        self.animation_frame.reset(kind, repeat);
-    }
-
+impl UpdateContext<'_> {
    pub fn get_current_animation_frame(&self) -> u32 {
-        self.animation_frame.frame
+        self.animation_frame
    }
+}

-    pub fn is_current_animation_finished(&self) -> bool {
-        let anims_data = self
-            .baked_animations
-            .get(&self.animations.baked)
-            .expect("Animation should exist");
-        anims_data
-            .frame_count(self.animation_frame.kind)
-            .expect("Current animation should have baked frames")
-            <= self.animation_frame.frame
+pub struct CollisionContext<'a> {
+    pub translation: &'a mut FighterTranslation,
+    pub prev_translation: &'a FighterPreviousTranslation,
+    pub velocity: &'a mut FighterVelocity,
+    pub surface: &'a mut FighterSurfaceState,
+    pub ecb: &'a mut FighterECB,
+    pub prev_ecb: &'a FighterPreviousECB,
+    pub stage_collision: &'a StageCollision,
+    pub leave_ground_ecb_lock_duration: u32,
+}
+
+impl CollisionContext<'_> {
+    pub fn air_collide_with_stage(
+        &self,
+    ) -> Option<crate::fighter::collision::AirCollisionWithStageResult> {
+        crate::fighter::collision::air_collide_with_stage(
+            self.prev_translation,
+            self.translation,
+            self.prev_ecb,
+            self.ecb,
+            self.stage_collision,
+        )
    }
 }

 fighter_states! {
    Wait => wait::WaitState,
    Walk => walk::WalkState,
+    Crouch => crouch::CrouchState,
    Dash => dash::DashState,
    Run => run::RunState,
    Fall => fall::FallState,
@@ -136,6 +222,7 @@ fighter_states! {
    AirDodge => air_dodge::AirDodgeState,
    Turn => turn::TurnState,
    GroundAttack => ground_attack::GroundAttackState,
+    Hitstun => hitstun::HitstunState,
 }

 #[derive(QueryData)]
@@ -146,41 +233,112 @@ pub struct FighterFrameQuery {
    pub input: &'static mut FighterInput,
    pub hitboxes: &'static mut FighterHitboxes,
    pub velocity: &'static mut FighterVelocity,
+    pub surface: &'static mut FighterSurfaceState,
+    pub knockback_velocity: &'static mut FighterKnockbackVelocity,
+    pub stale_move_queue: &'static mut FighterStaleMoveQueue,
    pub ecb: &'static mut FighterECB,
-    pub prev_ecb: &'static mut FighterPreviousECB,
+    pub prev_ecb: &'static FighterPreviousECB,
    pub facing_direction: &'static mut FighterFacingDirection,
    pub animation_frame: &'static mut FighterAnimationFrame,
    pub fighter: &'static Fighter,
 }

 impl<'w, 's> FighterFrameQueryItem<'w, 's> {
-    fn context<'a>(
+    fn animation_status(
+        &self,
+        animations: &FighterAnimations,
+        baked_animations: &Assets<BakedFighterAnimations>,
+    ) -> AnimationStatus {
+        let baked = baked_animations
+            .get(&animations.baked)
+            .expect("Animation should exist");
+        let frame = self.animation_frame.frame;
+        let finished = baked
+            .frame_count(self.animation_frame.kind)
+            .expect("Current animation should have baked frames")
+            <= frame;
+        AnimationStatus { frame, finished }
+    }
+
+    fn interrupt_context<'a>(
        &'a mut self,
        game_settings: &'a GameSettings,
-        stage_collision: &'a StageCollision,
        animations: &'a FighterAnimations,
        baked_animations: &'a Assets<BakedFighterAnimations>,
+        attributes: &'a FighterAttributes,
+    ) -> InterruptContext<'a> {
+        let animation = self.animation_status(animations, baked_animations);
+        InterruptContext {
+            input: &self.input,
+            facing_direction: &mut self.facing_direction,
+            game_settings,
+            fighter_attributes: attributes,
+            animation,
+        }
+    }
+
+    fn enter_context<'a>(
+        &'a mut self,
+        attributes: &'a FighterAttributes,
+        attack_script_assets: &'a FighterAttackScriptAssets,
+    ) -> EnterContext<'a> {
+        EnterContext {
+            input: &mut self.input,
+            hitboxes: &mut self.hitboxes,
+            velocity: &mut self.velocity,
+            knockback_velocity: &mut self.knockback_velocity,
+            stale_move_queue: &mut self.stale_move_queue,
+            facing_direction: &mut self.facing_direction,
+            animation_frame: &mut self.animation_frame,
+            fighter_attributes: attributes,
+            attack_script_assets,
+        }
+    }
+
+    fn exit_context(&mut self) -> ExitContext<'_> {
+        ExitContext {
+            hitboxes: &mut self.hitboxes,
+        }
+    }
+
+    fn update_context<'a>(
+        &'a mut self,
+        game_settings: &'a GameSettings,
+        attributes: &'a FighterAttributes,
        attack_scripts: &'a Assets<FighterAttackScript>,
        attack_script_assets: &'a FighterAttackScriptAssets,
-        manifest: &'a FighterManifest,
-    ) -> FighterStateContext<'a> {
-        FighterStateContext {
+    ) -> UpdateContext<'a> {
+        UpdateContext {
            translation: &mut self.translation,
            prev_translation: &mut self.prev_translation,
            input: &mut self.input,
            hitboxes: &mut self.hitboxes,
            velocity: &mut self.velocity,
-            ecb: &mut self.ecb,
-            prev_ecb: &mut self.prev_ecb,
-            facing_direction: &mut self.facing_direction,
+            surface: &mut self.surface,
+            knockback_velocity: &mut self.knockback_velocity,
            game_settings,
-            stage_collision,
-            animations,
-            animation_frame: &mut self.animation_frame,
-            baked_animations,
+            animation_frame: self.animation_frame.frame,
+            fighter_attributes: attributes,
            attack_scripts,
            attack_script_assets,
-            fighter_manifest: manifest,
+            facing_direction: &self.facing_direction,
+        }
+    }
+
+    fn collision_context<'a>(
+        &'a mut self,
+        stage_collision: &'a StageCollision,
+        game_settings: &'a GameSettings,
+    ) -> CollisionContext<'a> {
+        CollisionContext {
+            translation: &mut self.translation,
+            prev_translation: &self.prev_translation,
+            velocity: &mut self.velocity,
+            surface: &mut self.surface,
+            ecb: &mut self.ecb,
+            prev_ecb: &self.prev_ecb,
+            stage_collision,
+            leave_ground_ecb_lock_duration: game_settings.fighter_common.leave_ground_ecb_frame_lock_duration
        }
    }
 }
@@ -188,28 +346,19 @@ impl<'w, 's> FighterFrameQueryItem<'w, 's> {
 #[derive(QueryData)]
 #[query_data(mutable)]
 pub struct StatefulFighterQuery {
-    pub entity: Entity,
    pub state: &'static mut FighterState,
    pub frame: FighterFrameQuery,
    pub animations: &'static FighterAnimations,
    pub fighter: &'static Fighter,
    pub attack_script_assets: &'static FighterAttackScriptAssets,
-}
-
-#[derive(Component)]
-pub struct StateNameDebug(pub &'static str);
-
-impl std::fmt::Display for StateNameDebug {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(f, "{}", self.0)
-    }
+    pub pending_hit_reaction: &'static mut FighterPendingHitReaction,
+    pub hitstop: &'static mut FighterHitstop,
+    pub hitstop_shake: &'static mut FighterHitstopShake,
 }

 pub fn state_update_system(
    mut query: Query<StatefulFighterQuery>,
-    stage_collision: Res<StageCollision>,
    game_settings: Res<GameSettings>,
-    baked_animations: Res<Assets<BakedFighterAnimations>>,
    attack_scripts: Res<Assets<FighterAttackScript>>,
    manifests: Res<Assets<FighterManifest>>,
 ) {
@@ -217,107 +366,177 @@ pub fn state_update_system(
        let StatefulFighterQueryItem {
            mut state,
            mut frame,
-            animations,
+            hitstop,
            ..
        } = fighter;

-        let mut update_ctx = frame.context(
+        if hitstop.remaining_frames > 0 {
+            continue;
+        }
+
+        let manifest = manifests
+            .get(&fighter.fighter.manifest)
+            .expect("Fighter manifest should be valid");
+        let mut update_ctx = frame.update_context(
            &game_settings,
-            &stage_collision,
-            animations,
-            &baked_animations,
+            &manifest.attributes,
            &attack_scripts,
            &fighter.attack_script_assets,
-            &manifests
-                .get(&(fighter.fighter.manifest))
-                .expect("Fighter manifest should be valid"),
        );
        state.update(&mut update_ctx);
    }
 }

+fn transition_state(
+    current: &mut FighterState,
+    mut next: FighterState,
+    frame: &mut FighterFrameQueryItem,
+    attributes: &FighterAttributes,
+    attack_script_assets: &FighterAttackScriptAssets,
+    game_settings: &GameSettings,
+) {
+    let old_name = current.name();
+    let new_name = next.name();
+
+    current.on_exit(&mut frame.exit_context());
+    if let SurfacePolicy::Airborne(lock_policy) = next.surface_policy() {
+        frame.surface.apply_airborne_policy(
+            lock_policy,
+            game_settings.fighter_common.leave_ground_ecb_frame_lock_duration,
+        );
+    }
+    next.on_enter(&mut frame.enter_context(attributes, attack_script_assets));
+    *current = next;
+    info!("{} -> {}", old_name, new_name);
+}
+
 pub fn state_interrupt_system(
    mut query: Query<StatefulFighterQuery>,
-    stage_collision: Res<StageCollision>,
    game_settings: Res<GameSettings>,
    baked_animations: Res<Assets<BakedFighterAnimations>>,
    fighter_manifests: Res<Assets<FighterManifest>>,
-    attack_scripts: Res<Assets<FighterAttackScript>>,
-    mut commands: Commands,
 ) {
    for fighter in &mut query {
        let StatefulFighterQueryItem {
-            entity,
            mut state,
            mut frame,
            animations,
            fighter,
            attack_script_assets,
+            mut pending_hit_reaction,
+            mut hitstop,
+            mut hitstop_shake,
        } = fighter;
-        let mut state_context = frame.context(
-            &game_settings,
-            &stage_collision,
-            animations,
-            &baked_animations,
-            &attack_scripts,
-            attack_script_assets,
-            fighter_manifests
-                .get(&fighter.manifest)
-                .expect("Fighter manifest should be valid"),
-        );
-        if let Some(new_state) = state.check_interrupt(&mut state_context) {
-            let mut new_state = new_state;
-            let old_state_name = state.name();
-            let new_state_name = new_state.name();
-            state.on_exit(&mut state_context);
-            new_state.on_enter(&mut state_context);
-            commands
-                .entity(entity)
-                .insert((new_state, StateNameDebug(new_state_name)));
-            info!("State {} -> {}", old_state_name, new_state_name);
-        }
+        let manifest = fighter_manifests
+            .get(&fighter.manifest)
+            .expect("Fighter manifest should be valid");
+
+        let new_state = if let Some(reaction) = pending_hit_reaction.take() {
+            hitstop.remaining_frames = *reaction.hitstop_frames;
+            let shake_frames = reaction
+                .hitstop_frames
+                .calculate_shake_frames(&game_settings);
+            hitstop_shake.role = FighterHitstopShakeRole::Receiver;
+            hitstop_shake.total_frames = shake_frames;
+            hitstop_shake.remaining_frames = shake_frames;
+            hitstop_shake.kind = if state.is_visually_grounded() {
+                FighterHitstopShakeKind::Horizontal
+            } else {
+                FighterHitstopShakeKind::Vertical
+            };
+
+            let mut hitstop_kind = if frame.surface.is_grounded() {
+                hitstun::HitstopStateKind::Grounded
+            } else {
+                hitstun::HitstopStateKind::Airborne
+            };
+
+            if let hitstun::HitstopStateKind::Grounded = hitstop_kind {
+                let straight_up_angle = FGi32::lit("90.0");
+                if reaction.hitstop_frames
+                    >= HitStop::new(game_settings.fighter_common.tumble_bounce_hitstop_threshold)
+                {
+                    hitstop_kind = hitstun::HitstopStateKind::Airborne;
+                // TODO: Use floor normal here
+                } else if reaction.launch_angle.abs_diff(straight_up_angle)
+                    < game_settings
+                        .fighter_common
+                        .attack_ground_to_airborne_transition_vertical_angle_threshold
+                {
+                    hitstop_kind = hitstun::HitstopStateKind::Airborne;
+                } else {
+                    // straight down is 270
+                    let straight_down_angle = FGi32::lit("270.0");
+                    let meteor_threshold = game_settings.fighter_common.meteor_angle_threshold;
+                    if (reaction.launch_angle - straight_down_angle).abs() <= meteor_threshold {
+                        // TODO: Floor bounce
+                        hitstop_kind = hitstun::HitstopStateKind::Airborne;
+                    }
+                }
+            }
+
+            info!("Entering hitstop kind: {:?}", hitstop_kind);
+            Some(FighterState::Hitstun(HitstunState::new(
+                reaction,
+                hitstop_kind,
+            )))
+        } else if hitstop.remaining_frames > 0 {
+            None
+        } else {
+            state.check_interrupt(&mut frame.interrupt_context(
+                &game_settings,
+                animations,
+                &baked_animations,
+                &manifest.attributes,
+            ))
+        };
+
+        if let Some(new_state) = new_state {
+            transition_state(
+                &mut state,
+                new_state,
+                &mut frame,
+                &manifest.attributes,
+                attack_script_assets,
+                &game_settings,
+            );
+        };
    }
 }

 pub fn state_collision_interrupt_system(
    mut query: Query<StatefulFighterQuery>,
    stage_collision: Res<StageCollision>,
-    game_settings: Res<GameSettings>,
-    baked_animations: Res<Assets<BakedFighterAnimations>>,
    fighter_manifests: Res<Assets<FighterManifest>>,
-    attack_scripts: Res<Assets<FighterAttackScript>>,
-    mut commands: Commands,
+    game_settings: Res<GameSettings>,
 ) {
    for fighter in &mut query {
        let StatefulFighterQueryItem {
-            entity,
            mut state,
            mut frame,
-            animations,
            fighter,
            attack_script_assets,
+            hitstop,
+            ..
        } = fighter;
-        let mut state_context = frame.context(
-            &game_settings,
-            &stage_collision,
-            animations,
-            &baked_animations,
-            &attack_scripts,
-            &attack_script_assets,
-            fighter_manifests
-                .get(&fighter.manifest)
-                .expect("Fighter manifest should be valid"),
-        );
-        if let Some(new_state) = state.check_collision_interrupt(&mut state_context) {
-            let mut new_state = new_state;
-            let old_state_name = state.name();
-            let new_state_name = new_state.name();
-            state.on_exit(&mut state_context);
-            new_state.on_enter(&mut state_context);
-            commands
-                .entity(entity)
-                .insert((new_state, StateNameDebug(new_state_name)));
-            info!("State {} -> {}", old_state_name, new_state_name);
+        if hitstop.remaining_frames > 0 {
+            continue;
+        }
+
+        let manifest = fighter_manifests
+            .get(&fighter.manifest)
+            .expect("Fighter manifest should be valid");
+        let new_state =
+            state.check_collision_interrupt(&mut frame.collision_context(&stage_collision, &game_settings));
+        if let Some(new_state) = new_state {
+            transition_state(
+                &mut state,
+                new_state,
+                &mut frame,
+                &manifest.attributes,
+                &attack_script_assets,
+                &game_settings,
+            );
        }
    }
 }
@@ -1,23 +1,19 @@
 use bevy::prelude::*;

-use super::{FighterStateContext, FighterStateImpl, ground, wait, walk};
+use super::{
+    CollisionContext, EnterContext, FighterStateImpl, InterruptContext, UpdateContext, ground,
+    wait, walk,
+};
 use crate::fighter::animation::AnimKind;
 use crate::fighter::state::FighterState;
-use crate::fighter::state::fall::FallState;
-use crate::fighter::state::ground::{GroundedMotionResult, GroundedStateCommon};
-use crate::math::int::FGi32;

 #[derive(Component, Debug, Clone, Hash)]
-pub struct RunState {
-    pub grounded_common: GroundedStateCommon,
-}
+pub struct RunState;

 impl FighterStateImpl for RunState {
    const NAME: &'static str = "Run";
-    fn check_interrupt(&self, state_context: &mut FighterStateContext) -> Option<FighterState> {
-        if let Some(state) =
-            ground::grounded_movement_common_interrupts(state_context, &self.grounded_common)
-        {
+    fn check_interrupt(&self, state_context: &mut InterruptContext) -> Option<FighterState> {
+        if let Some(state) = ground::grounded_movement_common_interrupts(state_context) {
            return Some(state);
        }

@@ -27,26 +23,24 @@ impl FighterStateImpl for RunState {
        {
            None
        } else {
-            walk::check_input(state_context, &self.grounded_common)
-                .or_else(|| wait::check_input(state_context, &self.grounded_common))
+            walk::check_input(state_context).or_else(|| wait::check_input(state_context))
        }
    }

-    fn on_enter(&mut self, state_context: &mut super::FighterStateContext) {
+    fn on_enter(&mut self, state_context: &mut EnterContext) {
        state_context.play_animation(AnimKind::Run, true);
    }

-    fn update(&mut self, state_context: &mut super::FighterStateContext) {
+    fn update(&mut self, state_context: &mut UpdateContext) {
        let last_frame = state_context.input.get_last_frame();
        let (accel, target_vel) = state_context
-            .fighter_manifest
-            .attributes
-            .get_accel_and_target_dashrun(&last_frame, FGi32::ONE);
+            .fighter_attributes
+            .get_accel_and_target_dashrun(&last_frame, state_context.facing_direction.to_sign());
        let accel = ground::compute_ground_accel(
            accel,
            target_vel,
            state_context.velocity.x,
-            &state_context.fighter_manifest.attributes,
+            state_context.fighter_attributes,
            state_context.game_settings,
        );
        state_context.velocity.x += accel;
@@ -60,28 +54,21 @@ impl FighterStateImpl for RunState {

    fn check_collision_interrupt(
        &mut self,
-        state_context: &mut FighterStateContext,
+        state_context: &mut CollisionContext,
    ) -> Option<FighterState> {
-        if let GroundedMotionResult::InAir =
-            ground::collide_with_stage_grounded(state_context, &mut self.grounded_common, false)
-        {
-            Some(FighterState::Fall(FallState))
-        } else {
-            None
-        }
+        ground::collision_interrupt(state_context, true)
+    }
+
+    fn is_visually_grounded<'a>(&'a self) -> bool {
+        true
    }
 }

-pub fn check_input(
-    state_context: &FighterStateContext,
-    ground_state_common: &GroundedStateCommon,
-) -> Option<FighterState> {
+pub fn check_input(state_context: &InterruptContext) -> Option<FighterState> {
    let input_frame = state_context.input.get_last_frame();
    if input_frame.movement.x.abs() >= state_context.game_settings.input_common.run_stick_threshold
    {
-        return Some(FighterState::Run(RunState {
-            grounded_common: ground_state_common.clone(),
-        }));
+        return Some(FighterState::Run(RunState));
    }
    None
 }
@@ -1,26 +1,35 @@
-use super::{FighterStateContext, FighterStateImpl};
+use super::{CollisionContext, EnterContext, FighterStateImpl, InterruptContext, UpdateContext};
 use crate::fighter::animation::AnimKind;
-use crate::fighter::state::fall::FallState;
-use crate::fighter::state::ground::{self, GroundedMotionResult, GroundedStateCommon};
+use crate::fighter::state::ground;
 use crate::fighter::state::{FighterState, dash, jump, wait, walk};
+use crate::input::FighterCommands;

 #[derive(Debug, Clone, Hash)]
-pub struct TurnState {
-    grounded_common: GroundedStateCommon,
-}
+pub struct TurnState;

 impl FighterStateImpl for TurnState {
    const NAME: &'static str = "Turn";
-    fn check_interrupt(&self, state_context: &mut FighterStateContext) -> Option<FighterState> {
+    fn check_interrupt(&self, state_context: &mut InterruptContext) -> Option<FighterState> {
        // State chain that results in the turn completing
-        if let Some(state) = jump::check_input(state_context, &self.grounded_common) {
+        if state_context.get_current_animation_frame()
+            <= state_context
+                .game_settings
+                .input_common
+                .turn_into_dashback_window as u32
+        {
+            if let Some(state) = dash::check_input(state_context) {
+                return Some(state);
+            }
+        }
+        if let Some(state) = jump::check_input(state_context) {
+            *state_context.facing_direction = state_context.facing_direction.reverse();
            Some(state)
        } else if state_context.is_current_animation_finished() {
-            if let Some(state) = dash::check_input(state_context, &self.grounded_common) {
+            if let Some(state) = dash::check_input(state_context) {
                Some(state)
-            } else if let Some(state) = walk::check_input(state_context, &self.grounded_common) {
+            } else if let Some(state) = walk::check_input(state_context) {
                Some(state)
-            } else if let Some(state) = wait::check_input(state_context, &self.grounded_common) {
+            } else if let Some(state) = wait::check_input(state_context) {
                Some(state)
            } else {
                None
@@ -30,65 +39,42 @@ impl FighterStateImpl for TurnState {
        }
    }

-    fn on_enter(&mut self, state_context: &mut super::FighterStateContext) {
+    fn on_enter(&mut self, state_context: &mut EnterContext) {
        state_context.play_animation(AnimKind::Turn, false);
        *state_context.facing_direction = state_context.facing_direction.reverse();
    }

-    fn update(&mut self, state_context: &mut super::FighterStateContext) {
-        let friction = if state_context.velocity.x.abs()
-            > state_context.fighter_manifest.attributes.max_walk_vel
-        {
-            state_context.fighter_manifest.attributes.ground_friction
-                * state_context
-                    .game_settings
-                    .fighter_common
-                    .ground_friction_over_walk_speed_multiplier
-        } else {
-            state_context.fighter_manifest.attributes.ground_friction
-        };
-
-        let ground_velocity = state_context.velocity.x;
-
-        state_context.velocity.x += ground::apply_grounded_friction(friction, ground_velocity);
-
-        ground::apply_grounded_motion(
-            state_context.velocity,
-            state_context.translation,
-            state_context.prev_translation,
-        );
+    fn update(&mut self, state_context: &mut UpdateContext) {
+        ground::update_friction_motion(state_context);
    }

    fn check_collision_interrupt(
        &mut self,
-        state_context: &mut FighterStateContext,
+        state_context: &mut CollisionContext,
    ) -> Option<FighterState> {
-        if let GroundedMotionResult::InAir =
-            ground::collide_with_stage_grounded(state_context, &mut self.grounded_common, false)
-        {
-            Some(FighterState::Fall(FallState))
-        } else {
-            None
-        }
+        ground::collision_interrupt(state_context, false)
+    }
+
+    fn is_visually_grounded<'a>(&'a self) -> bool {
+        true
    }
 }

-pub fn check_input(
-    state_context: &FighterStateContext,
-    grounded_common: &GroundedStateCommon,
-) -> Option<FighterState> {
+pub fn check_input(state_context: &InterruptContext) -> Option<FighterState> {
    let input_frame = state_context.input.get_last_frame();
-    let smash_input_frame_threshold = state_context
-        .game_settings
-        .input_common
-        .smash_input_frame_threshold;
+
+    let has_smash_input = state_context
+        .input
+        .has_command(FighterCommands::SmashMoveLeft)
+        || state_context
+            .input
+            .has_command(FighterCommands::SmashMoveRight);
+
    if !input_frame.movement.x.is_zero()
        && input_frame.movement.x.signum() != state_context.facing_direction.to_sign()
-        && state_context.input.get_frames_in_smash_move_deadzone() > smash_input_frame_threshold
+        && !has_smash_input
    {
-        return Some(FighterState::Turn(TurnState {
-            grounded_common: grounded_common.clone(),
-        }));
+        return Some(FighterState::Turn(TurnState));
    }
    None
 }
@@ -1,25 +1,20 @@
-use super::{FighterStateContext, FighterStateImpl, ground};
+use super::{
+    CollisionContext, EnterContext, FighterStateImpl, InterruptContext, UpdateContext, ground,
+};
 use crate::fighter::animation::AnimKind;
 use crate::fighter::state::FighterState;
-use crate::fighter::state::fall::FallState;
-use crate::fighter::state::ground::{GroundedMotionResult, GroundedStateCommon};

 #[derive(Debug, Clone, Hash)]
-pub struct WaitState {
-    pub grounded_common: GroundedStateCommon,
-}
+pub struct WaitState;

 impl FighterStateImpl for WaitState {
    const NAME: &'static str = "Wait";
-    fn check_interrupt(&self, state_context: &mut FighterStateContext) -> Option<FighterState> {
-        if let Some(state) =
-            ground::grounded_movement_common_interrupts(state_context, &self.grounded_common)
-        {
+    fn check_interrupt(&self, state_context: &mut InterruptContext) -> Option<FighterState> {
+        if let Some(state) = ground::grounded_movement_common_interrupts(state_context) {
            Some(state)
-        } else if let Some(state) = ground::grounded_movement_standstill_common_interrupts(
-            state_context,
-            &self.grounded_common,
-        ) {
+        } else if let Some(state) =
+            ground::grounded_movement_standstill_common_interrupts(state_context)
+        {
            // Don't transition into yourself
            if let FighterState::Wait(_) = state {
                None
@@ -31,58 +26,31 @@ impl FighterStateImpl for WaitState {
        }
    }

-    fn on_enter(&mut self, state_context: &mut super::FighterStateContext) {
+    fn on_enter(&mut self, state_context: &mut EnterContext) {
        state_context.play_animation(AnimKind::Wait, true);
    }

-    fn update(&mut self, state_context: &mut super::FighterStateContext) {
-        let friction = if state_context.velocity.x.abs()
-            > state_context.fighter_manifest.attributes.max_walk_vel
-        {
-            state_context.fighter_manifest.attributes.ground_friction
-                * state_context
-                    .game_settings
-                    .fighter_common
-                    .ground_friction_over_walk_speed_multiplier
-        } else {
-            state_context.fighter_manifest.attributes.ground_friction
-        };
-
-        let ground_velocity = state_context.velocity.x;
-
-        state_context.velocity.x += ground::apply_grounded_friction(friction, ground_velocity);
-
-        ground::apply_grounded_motion(
-            state_context.velocity,
-            state_context.translation,
-            state_context.prev_translation,
-        );
+    fn update(&mut self, state_context: &mut UpdateContext) {
+        ground::update_friction_motion(state_context);
    }

    fn check_collision_interrupt(
        &mut self,
-        state_context: &mut FighterStateContext,
+        state_context: &mut CollisionContext,
    ) -> Option<FighterState> {
-        if let GroundedMotionResult::InAir =
-            ground::collide_with_stage_grounded(state_context, &mut self.grounded_common, false)
-        {
-            Some(FighterState::Fall(FallState))
-        } else {
-            None
-        }
+        ground::collision_interrupt(state_context, false)
+    }
+
+    fn is_visually_grounded<'a>(&'a self) -> bool {
+        true
    }
 }

-pub fn check_input(
-    state_context: &FighterStateContext,
-    ground_state_common: &GroundedStateCommon,
-) -> Option<FighterState> {
+pub fn check_input(state_context: &InterruptContext) -> Option<FighterState> {
    let input_frame = state_context.input.get_last_frame();

    if input_frame.movement.x.abs() < state_context.game_settings.input_common.stick_deadzone {
-        return Some(FighterState::Wait(WaitState {
-            grounded_common: ground_state_common.clone(),
-        }));
+        return Some(FighterState::Wait(WaitState));
    }
    None
 }
@@ -1,45 +1,37 @@
-use super::{FighterStateContext, FighterStateImpl, dash, ground, wait};
+use super::{
+    CollisionContext, EnterContext, FighterStateImpl, InterruptContext, UpdateContext, dash,
+    ground, wait,
+};
 use crate::fighter::animation::AnimKind;
 use crate::fighter::state::FighterState;
-use crate::fighter::state::fall::FallState;
-use crate::fighter::state::ground::{GroundedMotionResult, GroundedStateCommon};
-use crate::fighter::state::turn;

 #[derive(Debug, Clone, Hash)]
-pub struct WalkState {
-    pub grounded_common: GroundedStateCommon,
-}
+pub struct WalkState;

 impl FighterStateImpl for WalkState {
    const NAME: &'static str = "Walk";
-    fn check_interrupt(&self, state_context: &mut FighterStateContext) -> Option<FighterState> {
-        if let Some(state) = turn::check_input(state_context, &self.grounded_common) {
-            return Some(state);
-        } else if let Some(state) =
-            ground::grounded_movement_common_interrupts(state_context, &self.grounded_common)
-        {
+    fn check_interrupt(&self, state_context: &mut InterruptContext) -> Option<FighterState> {
+        if let Some(state) = ground::grounded_movement_common_interrupts(state_context) {
            return Some(state);
        }
-        wait::check_input(state_context, &self.grounded_common)
-            .or_else(|| dash::check_input(state_context, &self.grounded_common))
+        wait::check_input(state_context).or_else(|| dash::check_input(state_context))
    }

-    fn on_enter(&mut self, state_context: &mut FighterStateContext) {
+    fn on_enter(&mut self, state_context: &mut EnterContext) {
        state_context.play_animation(AnimKind::Walk, true);
    }

-    fn update(&mut self, state_context: &mut FighterStateContext) {
+    fn update(&mut self, state_context: &mut UpdateContext) {
        let last_frame = state_context.input.get_last_frame();
        let (accel, target_vel) = state_context
-            .fighter_manifest
-            .attributes
+            .fighter_attributes
            .get_accel_and_target_walk(&last_frame);

        let accel = ground::compute_ground_accel(
            accel,
            target_vel,
            state_context.velocity.x,
-            &state_context.fighter_manifest.attributes,
+            state_context.fighter_attributes,
            &state_context.game_settings,
        );

@@ -54,28 +46,21 @@ impl FighterStateImpl for WalkState {

    fn check_collision_interrupt(
        &mut self,
-        state_context: &mut FighterStateContext,
+        state_context: &mut CollisionContext,
    ) -> Option<FighterState> {
-        if let GroundedMotionResult::InAir =
-            ground::collide_with_stage_grounded(state_context, &mut self.grounded_common, false)
-        {
-            Some(FighterState::Fall(FallState))
-        } else {
-            None
-        }
+        ground::collision_interrupt(state_context, false)
+    }
+
+    fn is_visually_grounded<'a>(&'a self) -> bool {
+        true
    }
 }

-pub fn check_input(
-    state_context: &FighterStateContext,
-    ground_state_common: &GroundedStateCommon,
-) -> Option<FighterState> {
+pub fn check_input(state_context: &InterruptContext) -> Option<FighterState> {
    let input_frame = state_context.input.get_last_frame();

    if !input_frame.movement.x.is_zero() {
-        return Some(FighterState::Walk(WalkState {
-            grounded_common: ground_state_common.clone(),
-        }));
+        return Some(FighterState::Walk(WalkState));
    }

    None
@@ -0,0 +1,130 @@
+use bevy::prelude::*;
+
+use crate::{stage::line::StageLineID};
+
+#[derive(Clone, Copy, Debug, Hash, PartialEq, Eq)]
+pub enum EcbLockPolicy {
+    StartOnDetach,
+    Restart,
+    Preserve,
+    Clear,
+}
+
+/// The stage surface currently supporting a fighter.
+///
+/// This is physics state rather than fighter-state-machine state. Keeping it
+/// separate means grounded, landing, and hitstun states all share one source
+/// of truth for stage contact.
+#[derive(Component, Clone, Copy, Debug, Hash, PartialEq, Eq)]
+pub enum FighterSurfaceState {
+    Airborne {
+        ecb_lock_frames_remaining: u32
+    },
+    Grounded {
+        line_id: StageLineID,
+    },
+}
+
+impl Default for FighterSurfaceState {
+    fn default() -> Self {
+        Self::Airborne {
+            ecb_lock_frames_remaining: 0
+        }
+    }
+}
+
+impl FighterSurfaceState {
+    pub fn is_grounded(self) -> bool {
+        matches!(self, Self::Grounded { .. })
+    }
+
+    pub fn line_id(self) -> Option<StageLineID> {
+        match self {
+            Self::Airborne { .. } => None,
+            Self::Grounded { line_id } => Some(line_id),
+        }
+    }
+
+    pub(crate) fn land(&mut self, line_id: StageLineID) {
+        *self = Self::Grounded { line_id };
+    }
+
+    pub(crate) fn apply_airborne_policy(
+        &mut self,
+        policy: EcbLockPolicy,
+        ecb_lock_duration: u32,
+    ) {
+        let current_lock = match *self {
+            Self::Airborne { ecb_lock_frames_remaining } => ecb_lock_frames_remaining,
+            Self::Grounded { .. } => 0,
+        };
+        let ecb_lock_frames_remaining = match policy {
+            EcbLockPolicy::StartOnDetach if self.is_grounded() => ecb_lock_duration,
+            EcbLockPolicy::StartOnDetach => current_lock,
+            EcbLockPolicy::Restart => ecb_lock_duration,
+            EcbLockPolicy::Preserve => current_lock,
+            EcbLockPolicy::Clear => 0,
+        };
+        *self = Self::Airborne { ecb_lock_frames_remaining };
+    }
+
+    pub(crate) fn tick_ecb_lock(&mut self) {
+        if let Self::Airborne { ecb_lock_frames_remaining } = self {
+            *ecb_lock_frames_remaining = ecb_lock_frames_remaining.saturating_sub(1);
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn contact_lifecycle_has_one_source_of_truth() {
+        let mut surface = FighterSurfaceState::default();
+        assert!(!surface.is_grounded());
+        assert_eq!(surface.line_id(), None);
+
+        let line_id = StageLineID {
+            polygon: 2,
+            segment: 3,
+        };
+        surface.land(line_id);
+        assert!(surface.is_grounded());
+        assert_eq!(surface.line_id(), Some(line_id));
+
+        surface.apply_airborne_policy(EcbLockPolicy::Clear, 0);
+        assert!(!surface.is_grounded());
+        assert_eq!(surface.line_id(), None);
+    }
+
+    #[test]
+    fn start_on_detach_does_not_reset_an_existing_lock() {
+        let mut surface = FighterSurfaceState::default();
+        surface.apply_airborne_policy(EcbLockPolicy::Restart, 5);
+        surface.tick_ecb_lock();
+        surface.apply_airborne_policy(EcbLockPolicy::StartOnDetach, 5);
+
+        assert_eq!(
+            surface,
+            FighterSurfaceState::Airborne {
+                ecb_lock_frames_remaining: 4,
+            }
+        );
+    }
+
+    #[test]
+    fn restart_retriggers_an_existing_lock() {
+        let mut surface = FighterSurfaceState::default();
+        surface.apply_airborne_policy(EcbLockPolicy::Restart, 5);
+        surface.tick_ecb_lock();
+        surface.apply_airborne_policy(EcbLockPolicy::Restart, 5);
+
+        assert_eq!(
+            surface,
+            FighterSurfaceState::Airborne {
+                ecb_lock_frames_remaining: 5,
+            }
+        );
+    }
+}
@@ -1,5 +1,6 @@
 use bevy::prelude::*;
 use bevy_asset_loader::asset_collection::AssetCollection;
+use ron_asset_manager::prelude::RonAsset;
 use serde::{Deserialize, Serialize};

 use crate::{math::int::FGi32, menus::style::FGUiStyle};
@@ -8,8 +9,37 @@ use crate::{math::int::FGi32, menus::style::FGUiStyle};
 #[reflect(opaque)]
 pub struct FighterSettingsCommon {
    pub walk_speed_ease: FGi32,
+
+    /// Maximum allowed horizontal velocity
    pub ground_max_horizontal_velocity: FGi32,
+
+    /// Ground friction applied when the fighter is above the walk speed
    pub ground_friction_over_walk_speed_multiplier: FGi32,
+    pub knockback_stacking_window: u32,
+    pub knockback_decay_per_frame: FGi32,
+
+    /// Multiplier that translates knockback -> game unit velocity
+    pub knockback_launch_velocity_multiplier: FGi32,
+    pub hitstun_frames_per_unit_knockback: FGi32,
+
+    /// If an attack's hitstop > this value it will cause a grounded fighter to either bounce (if a meteor/spike)
+    /// or to become airborne
+    pub tumble_bounce_hitstop_threshold: u32,
+
+    /// Angle diff from straight down under which the attack will count as a meteor
+    pub meteor_angle_threshold: FGi32,
+
+    /// Angle diff from straight up under which the attack will force an airborne state 
+    pub attack_ground_to_airborne_transition_vertical_angle_threshold: FGi32,
+    pub visual_shake_frames_per_hitstop_frame: FGi32,
+    // offsets applied when the fighter is in hitstop
+    pub visual_shake_table: Vec<f32>,
+    /// The attacker will always get less hitstop
+    pub attacker_visual_shake_multiplier: f32,
+    
+    /// Maximum angle changed caused by directional influence
+    pub di_max_angle: FGi32,
+    pub leave_ground_ecb_frame_lock_duration: u32
 }
 #[derive(Reflect, Serialize, Deserialize, Clone)]
 #[reflect(opaque)]
@@ -21,9 +51,10 @@ pub struct InputSettingsCommon {
    pub run_stick_threshold: FGi32,
    pub smash_input_frame_threshold: u8,
    pub input_buffer_size: u8,
+    pub turn_into_dashback_window: u8,
 }

-#[derive(Reflect, Serialize, Deserialize, Resource, Asset, Clone)]
+#[derive(Reflect, Serialize, Deserialize, Resource, Asset, Clone, RonAsset)]
 pub struct GameSettings {
    pub fighter_common: FighterSettingsCommon,
    pub input_common: InputSettingsCommon,
@@ -12,7 +12,6 @@ use strum_macros::EnumIter;
 use crate::fighter::attack::AttackKind;
 use crate::game_settings::GameSettings;
 use crate::input::FighterInputFrame;
-use crate::math::int::FGi32;
 use crate::netcode::GGRSCfg;
 use crate::player::Player;

@@ -21,6 +20,8 @@ pub enum FighterCommands {
    Jump,
    Shield,
    Attack,
+    SmashMoveUp,
+    SmashMoveDown,
    SmashMoveLeft,
    SmashMoveRight,
 }
@@ -61,6 +62,8 @@ impl FighterAttackCommandType {
 pub struct FighterCommandLifetimes {
    smash_move_left: u8,
    smash_move_right: u8,
+    smash_move_down: u8,
+    smash_move_up: u8,
    jump: u8,
    shield: u8,
    attack: u8,
@@ -73,6 +76,8 @@ impl Index<FighterCommands> for FighterCommandLifetimes {
        match command {
            FighterCommands::SmashMoveLeft => &self.smash_move_left,
            FighterCommands::SmashMoveRight => &self.smash_move_right,
+            FighterCommands::SmashMoveDown => &self.smash_move_down,
+            FighterCommands::SmashMoveUp => &self.smash_move_up,
            FighterCommands::Jump => &self.jump,
            FighterCommands::Shield => &self.shield,
            FighterCommands::Attack => &self.attack,
@@ -85,6 +90,8 @@ impl IndexMut<FighterCommands> for FighterCommandLifetimes {
        match command {
            FighterCommands::SmashMoveLeft => &mut self.smash_move_left,
            FighterCommands::SmashMoveRight => &mut self.smash_move_right,
+            FighterCommands::SmashMoveDown => &mut self.smash_move_down,
+            FighterCommands::SmashMoveUp => &mut self.smash_move_up,
            FighterCommands::Jump => &mut self.jump,
            FighterCommands::Shield => &mut self.shield,
            FighterCommands::Attack => &mut self.attack,
@@ -177,7 +184,8 @@ pub fn postprocess_input(
            {
                input.frames_in_x_flick_deadzone = 1;
            } else {
-                input.frames_in_x_flick_deadzone = input.frames_in_x_flick_deadzone.saturating_add(1);
+                input.frames_in_x_flick_deadzone =
+                    input.frames_in_x_flick_deadzone.saturating_add(1);
            }
        }

@@ -190,7 +198,8 @@ pub fn postprocess_input(
            {
                input.frames_in_y_flick_deadzone = 1;
            } else {
-                input.frames_in_y_flick_deadzone = input.frames_in_y_flick_deadzone.saturating_add(1);
+                input.frames_in_y_flick_deadzone =
+                    input.frames_in_y_flick_deadzone.saturating_add(1);
            }
        }

@@ -215,22 +224,24 @@ pub fn postprocess_input(
            );
        }

-        if x_abs >= axis_threshold && input.frames_in_x_flick_deadzone <= frame_threshold {
-            input.clear_command(FighterCommands::SmashMoveLeft);
-            input.clear_command(FighterCommands::SmashMoveRight);
+        let mut y_flick_detected =
+            y_abs >= axis_threshold && input.frames_in_y_flick_deadzone <= frame_threshold;
+        let mut x_flick_detected =
+            x_abs >= axis_threshold && input.frames_in_x_flick_deadzone <= frame_threshold;

-            let command_to_set = if input.current_frame.movement.x > 0.0 {
-                FighterCommands::SmashMoveRight
+        if y_flick_detected {
+            input.clear_command(FighterCommands::SmashMoveUp);
+            input.clear_command(FighterCommands::SmashMoveDown);
+
+            let command_to_set = if input.current_frame.movement.y > 0.0 {
+                FighterCommands::SmashMoveUp
            } else {
-                FighterCommands::SmashMoveLeft
+                FighterCommands::SmashMoveDown
            };

            input.set_lifetime(command_to_set, game_settings.input_common.input_buffer_size);
        }

-        let mut y_flick_detected = y_abs >= axis_threshold && input.frames_in_y_flick_deadzone <= frame_threshold;
-        let mut x_flick_detected = x_abs >= axis_threshold && input.frames_in_x_flick_deadzone <= frame_threshold;
-        
        // if both flicks are detected, only one wins

        if x_flick_detected && y_flick_detected {
@@ -239,7 +250,7 @@ pub fn postprocess_input(
        }

        let attack_detected = input.current_frame.attack && !input.prev_frame.attack;
-        
+
        // Tilt/smash up/down
        if attack_detected {
            let attack_type = if y_flick_detected {
@@ -270,11 +281,13 @@ pub fn postprocess_input(
                FighterAttackCommandType::Neutral
            };

-            input.set_lifetime(FighterCommands::Attack, game_settings.input_common.input_buffer_size);
+            input.set_lifetime(
+                FighterCommands::Attack,
+                game_settings.input_common.input_buffer_size,
+            );
            input.set_attack_command_type(attack_type);
        }

-
        if x_flick_detected {
            input.clear_command(FighterCommands::SmashMoveLeft);
            input.clear_command(FighterCommands::SmashMoveRight);
@@ -149,19 +149,19 @@ pub fn gc_event_system(
            send_axis!(GamepadAxis::LeftStickY, now.left_stick.1);
        }
        if prev.right_stick != now.right_stick {
-            send_axis!(
-                GamepadAxis::RightStickX,
-                now.right_stick.0
-            );
-            send_axis!(
-                GamepadAxis::RightStickY,
-                now.right_stick.1
-            );
+            send_axis!(GamepadAxis::RightStickX, now.right_stick.0);
+            send_axis!(GamepadAxis::RightStickY, now.right_stick.1);
        }
        if prev.triggers != now.triggers {
            // The analog triggers are represented as button-axis values, as we have no GamepadAxis to use.
-            send_button!(GamepadButton::LeftTrigger2, unsigned_axis_float(now.triggers.0));
-            send_button!(GamepadButton::RightTrigger2, unsigned_axis_float(now.triggers.1));
+            send_button!(
+                GamepadButton::LeftTrigger2,
+                unsigned_axis_float(now.triggers.0)
+            );
+            send_button!(
+                GamepadButton::RightTrigger2,
+                unsigned_axis_float(now.triggers.1)
+            );
        }

        macro_rules! digital {
@@ -171,10 +171,10 @@ pub fn gc_event_system(
                }
            };
        }
-        digital!(a, GamepadButton::South);
-        digital!(b, GamepadButton::West);
-        digital!(x, GamepadButton::East);
-        digital!(y, GamepadButton::North);
+        digital!(a, GamepadButton::East);
+        digital!(b, GamepadButton::South);
+        digital!(x, GamepadButton::North);
+        digital!(y, GamepadButton::West);
        digital!(z, GamepadButton::Z);
        digital!(start, GamepadButton::Start);
        digital!(dpad_up, GamepadButton::DPadUp);
@@ -1,11 +1,11 @@
 pub mod bridge;
 pub mod poll;

-pub use bridge::{GcPort, GcPorts, GC_PORT_COUNT};
+pub use bridge::{GC_PORT_COUNT, GcPort, GcPorts};
 pub use poll::{GcAdapterSnapshot, GcPortState};

-use bevy::input::gamepad::{gamepad_connection_system, gamepad_event_processing_system};
 use bevy::input::InputSystems;
+use bevy::input::gamepad::{gamepad_connection_system, gamepad_event_processing_system};
 use bevy::prelude::*;

 #[derive(Default)]
@@ -1,6 +1,8 @@
 use std::panic::{self, AssertUnwindSafe};
 use std::sync::atomic::{AtomicBool, Ordering};
 use std::sync::{Arc, Mutex};
+use std::thread::JoinHandle;
+use std::time::{Duration, Instant};

 use bevy::prelude::*;
 use gc_adapter_neo::{Controller, GcAdapter};
@@ -45,8 +47,8 @@ impl GcPortState {
            dpad_right: b.dpad_right(),
            left_trigger_digital: b.left_trigger(),
            right_trigger_digital: b.right_trigger(),
-            left_stick: cal.left_stick(&c),
-            right_stick: cal.right_stick(&c),
+            left_stick: cal.left_stick_coords(&c),
+            right_stick: cal.right_stick_coords(&c),
            triggers: (c.triggers.left.raw(), c.triggers.right.raw()),
        }
    }
@@ -55,10 +57,11 @@ impl GcPortState {
 /// Shared, `Send + Sync` handle to the latest snapshot from the poll
 /// thread. Safe to store as an ordinary [`Resource`] (no `NonSend` needed)
 /// because the `GcAdapter` itself never leaves its thread.
-#[derive(Resource, Clone)]
+#[derive(Resource)]
 pub struct GcAdapterSnapshot {
    ports: Arc<Mutex<[GcPortState; 4]>>,
    shutdown: Arc<AtomicBool>,
+    poll_thread: Option<JoinHandle<()>>,
 }

 impl GcAdapterSnapshot {
@@ -69,14 +72,38 @@ impl GcAdapterSnapshot {

 impl Drop for GcAdapterSnapshot {
    fn drop(&mut self) {
-        // Only actually signals shutdown once the last clone (this resource
-        // is never cloned in practice, but be defensive) is dropped.
-        if Arc::strong_count(&self.shutdown) <= 1 {
-            self.shutdown.store(true, Ordering::Relaxed);
+        self.shutdown.store(true, Ordering::Release);
+
+        if let Some(poll_thread) = self.poll_thread.take() {
+            if let Err(payload) = poll_thread.join() {
+                error!(
+                    "GameCube Controller Adapter poll thread panicked during shutdown: {payload:?}"
+                );
+            }
        }
    }
 }

+const INITIAL_ERROR_BACKOFF: Duration = Duration::from_millis(1);
+const MAX_ERROR_BACKOFF: Duration = Duration::from_millis(100);
+
+fn next_error_backoff(backoff: Duration) -> Duration {
+    backoff.saturating_mul(2).min(MAX_ERROR_BACKOFF)
+}
+
+/// Wait for a retry while still allowing the owner to shut the poll thread down promptly.
+fn wait_for_retry(shutdown: &AtomicBool, delay: Duration) -> bool {
+    let deadline = Instant::now() + delay;
+    while !shutdown.load(Ordering::Acquire) {
+        let remaining = deadline.saturating_duration_since(Instant::now());
+        if remaining.is_zero() {
+            return true;
+        }
+        std::thread::sleep(remaining.min(Duration::from_millis(10)));
+    }
+    false
+}
+
 /// Connects to the first GameCube adapter found on the USB bus and starts
 /// polling it on a dedicated thread. Returns `None` (after logging a
 /// warning) if no adapter is plugged in
@@ -94,34 +121,40 @@ pub fn spawn_poll_thread() -> Result<GcAdapterSnapshot, gc_adapter_neo::UsbError

    let thread_ports = ports.clone();
    let thread_shutdown = shutdown.clone();
-    std::thread::Builder::new()
+    let poll_thread = std::thread::Builder::new()
        .name("gc-adapter-poll".into())
        .spawn(move || {
            // Flush whatever the adapter had buffered before we started
-            if let Err(payload) =
-                panic::catch_unwind(AssertUnwindSafe(|| adapter.refresh_inputs()))
+            if let Err(payload) = panic::catch_unwind(AssertUnwindSafe(|| adapter.refresh_inputs()))
            {
-                error!(
-                    "GameCube Controller Adapter USB refresh panicked on startup: {payload:?}"
-                );
+                error!("GameCube Controller Adapter USB refresh panicked on startup: {payload:?}");
            }

            #[cfg(debug_assertions)]
            let mut rate_window_start = std::time::Instant::now();
            #[cfg(debug_assertions)]
            let mut rate_window_count: u32 = 0;
+            let mut error_backoff = INITIAL_ERROR_BACKOFF;

-            while !thread_shutdown.load(Ordering::Relaxed) {
-                let result =
-                    panic::catch_unwind(AssertUnwindSafe(|| adapter.read_controllers()));
+            while !thread_shutdown.load(Ordering::Acquire) {
+                let result = panic::catch_unwind(AssertUnwindSafe(|| adapter.read_controllers()));

                let controllers = match result {
-                    Ok(Ok(controllers)) => controllers,
+                    Ok(Ok(controllers)) => {
+                        error_backoff = INITIAL_ERROR_BACKOFF;
+                        controllers
+                    }
                    // Ignore this, for some reason we get a bunch of these when we start reading
                    Ok(Err(
                        gc_adapter_neo::AdapterError::Parse(_)
                        | gc_adapter_neo::AdapterError::ShortRead(_),
-                    )) => continue,
+                    )) => {
+                        if !wait_for_retry(&thread_shutdown, error_backoff) {
+                            break;
+                        }
+                        error_backoff = next_error_backoff(error_backoff);
+                        continue;
+                    }
                    Ok(Err(gc_adapter_neo::AdapterError::Usb(err))) => {
                        error!(
                            "GameCube Controller Adapter USB read failed ({err:?}); stopping \
@@ -142,7 +175,8 @@ pub fn spawn_poll_thread() -> Result<GcAdapterSnapshot, gc_adapter_neo::UsbError

                let mut states = [GcPortState::default(); 4];
                for i in 0..4 {
-                    states[i] = GcPortState::make_port_state(&controllers[i], adapter.calibration(i));
+                    states[i] =
+                        GcPortState::make_port_state(&controllers[i], adapter.calibration(i));
                }
                *thread_ports.lock().unwrap_or_else(|e| e.into_inner()) = states;

@@ -163,5 +197,32 @@ pub fn spawn_poll_thread() -> Result<GcAdapterSnapshot, gc_adapter_neo::UsbError
        })
        .expect("failed to spawn gc-adapter poll thread");

-    Ok(GcAdapterSnapshot { ports, shutdown })
+    Ok(GcAdapterSnapshot {
+        ports,
+        shutdown,
+        poll_thread: Some(poll_thread),
+    })
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn error_backoff_is_capped() {
+        let mut backoff = INITIAL_ERROR_BACKOFF;
+        for _ in 0..16 {
+            backoff = next_error_backoff(backoff);
+        }
+
+        assert_eq!(backoff, MAX_ERROR_BACKOFF);
+        assert_eq!(next_error_backoff(MAX_ERROR_BACKOFF), MAX_ERROR_BACKOFF);
+    }
+
+    #[test]
+    fn retry_wait_stops_when_shutdown_is_requested() {
+        let shutdown = AtomicBool::new(true);
+
+        assert!(!wait_for_retry(&shutdown, Duration::from_secs(1)));
+    }
 }
@@ -21,8 +21,16 @@ pub fn sample_gamepad(pad: &Gamepad, input_map: &BaseInputMap) -> FighterInputFr
                    // Digital buttons driving movement isn't used by the
                    // default bindings (the stick covers that), but stay
                    // consistent with the keyboard backend if one is added.
-                    InputMapAction::MovementXDir(sign) => if pressed { movement.x += sign as f32 },
-                    InputMapAction::MovementYDir(sign) => if pressed { movement.y += sign as f32 },
+                    InputMapAction::MovementXDir(sign) => {
+                        if pressed {
+                            movement.x += sign as f32
+                        }
+                    }
+                    InputMapAction::MovementYDir(sign) => {
+                        if pressed {
+                            movement.y += sign as f32
+                        }
+                    }
                }
            }
            // gamepad does not have a separate axis for left and right, so sign here should be 1
@@ -32,7 +40,7 @@ pub fn sample_gamepad(pad: &Gamepad, input_map: &BaseInputMap) -> FighterInputFr
                    InputMapAction::MovementXDir(_) => movement.x += value,
                    InputMapAction::MovementYDir(_) => movement.y += value,
                    _ => {}
-                    }
+                }
            }
        }
    }
@@ -33,7 +33,6 @@ pub fn sample_keyboard(key: &ButtonInput<KeyCode>, input_map: &BaseInputMap) ->
            InputMapAction::Jump => input_frame.jump = action_strength != FGi32::ZERO,
            InputMapAction::Shield => input_frame.shield = action_strength != FGi32::ZERO,
            InputMapAction::Attack => input_frame.attack = action_strength != FGi32::ZERO,
-
        }
    }

@@ -41,6 +41,13 @@ impl LocalInputAssignments {
        }
        None
    }
+
+    pub fn get_from_slot(&self, slot: usize) -> Option<&LocalInputSource> {
+        self.0
+            .iter()
+            .find(|(c_slot, _)| slot == *c_slot)
+            .map(|(_, source)| source)
+    }
 }

 use crate::game_settings::GameSettings;
@@ -92,8 +99,6 @@ impl Plugin for FighterInputPlugin {
                    key: KeyCode::KeyJ,
                    action: InputMapAction::Attack,
                },
-
-
                // Menu
            ],
            gamepad: vec![
@@ -125,33 +130,92 @@ impl Plugin for FighterInputPlugin {
                    binding: GamepadBinding::Button(GamepadButton::East),
                    action: InputMapAction::Attack,
                },
-
            ],
        })
        .insert_resource(MenuInputMap {
            keyboard: vec![
-                MenuKeyboardInputMapElement { key: KeyCode::ArrowUp, action: MenuInputMapAction::MovementYDir(1) },
-                MenuKeyboardInputMapElement { key: KeyCode::ArrowDown, action: MenuInputMapAction::MovementYDir(-1) },
-                MenuKeyboardInputMapElement { key: KeyCode::ArrowLeft, action: MenuInputMapAction::MovementXDir(-1) },
-                MenuKeyboardInputMapElement { key: KeyCode::ArrowRight, action: MenuInputMapAction::MovementXDir(1) },
-                MenuKeyboardInputMapElement { key: KeyCode::Enter, action: MenuInputMapAction::Accept },
-                MenuKeyboardInputMapElement { key: KeyCode::Escape, action: MenuInputMapAction::Back },
-                MenuKeyboardInputMapElement { key: KeyCode::Space, action: MenuInputMapAction::Start },
-                MenuKeyboardInputMapElement { key: KeyCode::KeyW, action: MenuInputMapAction::MovementYDir(1) },
-                MenuKeyboardInputMapElement { key: KeyCode::KeyS, action: MenuInputMapAction::MovementYDir(-1) },
-                MenuKeyboardInputMapElement { key: KeyCode::KeyA, action: MenuInputMapAction::MovementXDir(-1) },
-                MenuKeyboardInputMapElement { key: KeyCode::KeyD, action: MenuInputMapAction::MovementXDir(1) },
+                MenuKeyboardInputMapElement {
+                    key: KeyCode::ArrowUp,
+                    action: MenuInputMapAction::MovementYDir(1),
+                },
+                MenuKeyboardInputMapElement {
+                    key: KeyCode::ArrowDown,
+                    action: MenuInputMapAction::MovementYDir(-1),
+                },
+                MenuKeyboardInputMapElement {
+                    key: KeyCode::ArrowLeft,
+                    action: MenuInputMapAction::MovementXDir(-1),
+                },
+                MenuKeyboardInputMapElement {
+                    key: KeyCode::ArrowRight,
+                    action: MenuInputMapAction::MovementXDir(1),
+                },
+                MenuKeyboardInputMapElement {
+                    key: KeyCode::Enter,
+                    action: MenuInputMapAction::Accept,
+                },
+                MenuKeyboardInputMapElement {
+                    key: KeyCode::Escape,
+                    action: MenuInputMapAction::Back,
+                },
+                MenuKeyboardInputMapElement {
+                    key: KeyCode::Space,
+                    action: MenuInputMapAction::Start,
+                },
+                MenuKeyboardInputMapElement {
+                    key: KeyCode::KeyW,
+                    action: MenuInputMapAction::MovementYDir(1),
+                },
+                MenuKeyboardInputMapElement {
+                    key: KeyCode::KeyS,
+                    action: MenuInputMapAction::MovementYDir(-1),
+                },
+                MenuKeyboardInputMapElement {
+                    key: KeyCode::KeyA,
+                    action: MenuInputMapAction::MovementXDir(-1),
+                },
+                MenuKeyboardInputMapElement {
+                    key: KeyCode::KeyD,
+                    action: MenuInputMapAction::MovementXDir(1),
+                },
            ],
            gamepad: vec![
-                MenuGamepadInputMapElement { binding: GamepadBinding::Button(GamepadButton::DPadUp), action: MenuInputMapAction::MovementYDir(1) },
-                MenuGamepadInputMapElement { binding: GamepadBinding::Button(GamepadButton::DPadDown), action: MenuInputMapAction::MovementYDir(-1) },
-                MenuGamepadInputMapElement { binding: GamepadBinding::Button(GamepadButton::DPadLeft), action: MenuInputMapAction::MovementXDir(-1) },
-                MenuGamepadInputMapElement { binding: GamepadBinding::Button(GamepadButton::DPadRight), action: MenuInputMapAction::MovementXDir(1) },
-                MenuGamepadInputMapElement { binding: GamepadBinding::Axis(GamepadAxis::LeftStickX, 1), action: MenuInputMapAction::MovementXDir(1) },
-                MenuGamepadInputMapElement { binding: GamepadBinding::Axis(GamepadAxis::LeftStickY, 1), action: MenuInputMapAction::MovementYDir(1) },
-                MenuGamepadInputMapElement { binding: GamepadBinding::Button(GamepadButton::South), action: MenuInputMapAction::Accept },
-                MenuGamepadInputMapElement { binding: GamepadBinding::Button(GamepadButton::West), action: MenuInputMapAction::Back },
-                MenuGamepadInputMapElement { binding: GamepadBinding::Button(GamepadButton::Start), action: MenuInputMapAction::Start },
+                MenuGamepadInputMapElement {
+                    binding: GamepadBinding::Button(GamepadButton::DPadUp),
+                    action: MenuInputMapAction::MovementYDir(1),
+                },
+                MenuGamepadInputMapElement {
+                    binding: GamepadBinding::Button(GamepadButton::DPadDown),
+                    action: MenuInputMapAction::MovementYDir(-1),
+                },
+                MenuGamepadInputMapElement {
+                    binding: GamepadBinding::Button(GamepadButton::DPadLeft),
+                    action: MenuInputMapAction::MovementXDir(-1),
+                },
+                MenuGamepadInputMapElement {
+                    binding: GamepadBinding::Button(GamepadButton::DPadRight),
+                    action: MenuInputMapAction::MovementXDir(1),
+                },
+                MenuGamepadInputMapElement {
+                    binding: GamepadBinding::Axis(GamepadAxis::LeftStickX, 1),
+                    action: MenuInputMapAction::MovementXDir(1),
+                },
+                MenuGamepadInputMapElement {
+                    binding: GamepadBinding::Axis(GamepadAxis::LeftStickY, 1),
+                    action: MenuInputMapAction::MovementYDir(1),
+                },
+                MenuGamepadInputMapElement {
+                    binding: GamepadBinding::Button(GamepadButton::South),
+                    action: MenuInputMapAction::Accept,
+                },
+                MenuGamepadInputMapElement {
+                    binding: GamepadBinding::Button(GamepadButton::West),
+                    action: MenuInputMapAction::Back,
+                },
+                MenuGamepadInputMapElement {
+                    binding: GamepadBinding::Button(GamepadButton::Start),
+                    action: MenuInputMapAction::Start,
+                },
            ],
        })
        .init_resource::<LocalInputAssignments>()
@@ -183,16 +247,24 @@ fn read_local_inputs(
    gamepads: Query<&Gamepad>,
    assignments: Res<LocalInputAssignments>,
    local_players: Res<LocalPlayers>,
-    game_settings: Res<GameSettings>
+    game_settings: Res<GameSettings>,
 ) {
    let mut local_inputs = HashMap::new();

    for handle in &local_players.0 {
-        let assigned = assignments.0.iter().find(|(player_handle, _)| player_handle == handle);
+        let assigned = assignments
+            .0
+            .iter()
+            .find(|(player_handle, _)| player_handle == handle);
        let gamepad = match assigned {
            Some((_, LocalInputSource::Gamepad(entity))) => gamepads.get(*entity).ok(),
            Some((_, LocalInputSource::Keyboard)) => None,
-            None => gc_ports.entities.get(*handle).copied().flatten().and_then(|entity| gamepads.get(entity).ok()),
+            None => gc_ports
+                .entities
+                .get(*handle)
+                .copied()
+                .flatten()
+                .and_then(|entity| gamepads.get(entity).ok()),
        };

        let mut input_frame = match assigned {
@@ -200,10 +272,7 @@ fn read_local_inputs(
            Some((_, LocalInputSource::Gamepad(_))) => gamepad
                .map(|pad| gamepad::sample_gamepad(pad, &input_map))
                .unwrap_or_default(),
-            None => match gamepad {
-            Some(pad) => gamepad::sample_gamepad(pad, &input_map),
-            None => keyboard::sample_keyboard(&key, &input_map),
-            },
+            None => FighterInputFrame::default(),
        };

        // preprocess frame
@@ -22,34 +22,40 @@
 //! appears in `Add Component`. No registration code is needed.

 use bevy::{
-    asset::processor::{AssetProcessor, ProcessorState}, prelude::*, settings::SettingsPlugin, tasks::block_on,
+    asset::processor::{AssetProcessor, ProcessorState},
+    prelude::*,
+    settings::SettingsPlugin,
+    tasks::block_on,
 };
 use bevy_asset_loader::prelude::*;
-use ron_asset_manager::RonAssetPlugin;
-use bevy_wind_waker_shader::prelude::*;
 use clap::Parser;
+use ron_asset_manager::RonAssetPlugin;

 use crate::{
    camera::MatchCameraPlugin, fighter::manifest::FighterManifest, game_settings::GameSettings,
-    schedule::GameplaySchedulePlugin, stage::manifest::StageManifest,
+    match_runtime::MatchRuntimePlugin, menus::style::FGUiStyle, schedule::GameplaySchedulePlugin,
+    stage::manifest::StageManifest, ui::InGameUIPlugin,
 };

 mod args;
+pub mod blend_asset;
 pub mod camera;
 pub mod debug_tools;
 pub mod fighter;
 pub mod game_settings;
 pub mod input;
 pub mod match_loading;
+pub mod match_runtime;
 mod math;
+pub mod menus;
 pub mod netcode;
 pub mod player;
 pub mod replay;
 pub mod schedule;
 pub mod scripting;
 pub mod stage;
-pub mod menus;
 pub mod texture_reference;
+pub mod ui;

 #[derive(States, Debug, Clone, Copy, Eq, PartialEq, Hash, Default)]
 pub enum AppState {
@@ -61,12 +67,14 @@ pub enum AppState {
    LoadStageManifests,
    PrepareStageManifests,
    CommonAssetLoadFailed,
+    PreMainMenu,
    MainMenu,
    CharacterSelect,
    StageSelect,
    LoadingMatch,
    PreparingMatch,
    InMatch,
+    MatchDisconnected,
    MatchLoadFailed,
 }

@@ -76,6 +84,21 @@ pub enum AppState {
 #[derive(Default)]
 pub struct GamePlugin;

+/// Registers every custom asset loader used by the game and asset processor.
+pub struct GameAssetPlugin;
+
+impl Plugin for GameAssetPlugin {
+    fn build(&self, app: &mut App) {
+        app.add_plugins((
+            blend_asset::BlendAssetProcessingPlugin,
+            RonAssetPlugin::<FighterManifest>::create("fighter.ron"),
+            RonAssetPlugin::<StageManifest>::create("stage.ron"),
+            RonAssetPlugin::<GameSettings>::create("ron"),
+            RonAssetPlugin::<FGUiStyle>::create("stylesheet.ron"),
+        ));
+    }
+}
+
 impl Plugin for GamePlugin {
    fn build(&self, app: &mut App) {
        // Each module owns its own systems, rollback registrations and
@@ -84,10 +107,10 @@ impl Plugin for GamePlugin {
        app.init_state::<AppState>()
            .add_plugins((
                SettingsPlugin::new("moe.eirteam.shinespark.debug_settings"),
-                WindWakerShaderPlugin::default(),
                // Brings up GGRS (and with it `GgrsSchedule`), so it goes first.
                netcode::FighterNetcodePlugin::default(),
                GameplaySchedulePlugin,
+                MatchRuntimePlugin,
                input::FighterInputPlugin,
                replay::ReplayPlugin,
                debug_tools::DebugToolsPlugin,
@@ -96,9 +119,8 @@ impl Plugin for GamePlugin {
                scripting::importer::FighterScriptImportPlugin,
                stage::StagePlugin,
                MatchCameraPlugin,
-                RonAssetPlugin::<FighterManifest>::create("fighter.ron"),
-                RonAssetPlugin::<StageManifest>::create("stage.ron"),
-                RonAssetPlugin::<GameSettings>::create("ron"),
+                GameAssetPlugin,
+                InGameUIPlugin,
            ))
            .add_plugins(menus::MenuPlugin)
            .add_loading_state(
@@ -139,7 +161,7 @@ impl Plugin for GamePlugin {
                stage::manifest::prepare_stage_manifests,
            )
            .add_systems(
-                OnEnter(AppState::MainMenu),
+                OnEnter(AppState::PreMainMenu),
                match_loading::initiate_default_match,
            )
            .add_systems(
@@ -151,11 +173,27 @@ impl Plugin for GamePlugin {
    }
 }

+/// Registers the custom asset loaders and processors used by CI and release
+/// builds. The processing binary adds this plugin without starting the game.
+pub struct AssetProcessingPlugin;
+
+impl Plugin for AssetProcessingPlugin {
+    fn build(&self, app: &mut App) {
+        app.add_plugins((
+            GameAssetPlugin,
+            scripting::importer::FighterScriptImportPlugin,
+            fighter::baked_animation::BakedAnimationAssetProcessingPlugin,
+        ));
+    }
+}
+
 fn wait_for_asset_processor(
    processor: Option<Res<AssetProcessor>>,
    mut next_state: ResMut<NextState<AppState>>,
 ) {
-    if processor.is_none_or(|processor| block_on(processor.get_state()) == ProcessorState::Finished)
+    if !cfg!(feature = "development")
+        || processor
+            .is_none_or(|processor| block_on(processor.get_state()) == ProcessorState::Finished)
    {
        next_state.set(AppState::LoadCommonAssets);
    }
@@ -1,39 +1,49 @@
-//! Standalone binary for game-test: `cargo run` plays the game
-//! without the editor. The editor's Play button runs the same
-//! [`game_test::GamePlugin`] through its own game runner instead.
-
 use bevy::asset::AssetMode::Processed;
+#[cfg(feature = "debug_features")]
 use bevy::camera_controller::free_camera::FreeCameraPlugin;
+use bevy::gltf::GltfPlugin;
 use bevy::image::{ImageAddressMode, ImagePlugin, ImageSamplerDescriptor};
 use bevy::prelude::*;
+#[cfg(feature = "debug_features")]
 use bevy_egui::EguiPlugin;
+#[cfg(feature = "debug_features")]
 use bevy_inspector_egui::quick::WorldInspectorPlugin;

 fn main() -> AppExit {
    // A `Repeat` sampler so the tileable materials authored in the
    // editor render the same way at runtime; Bevy's default
    // `ClampToEdge` smears texture edges on brush geometry.
+    let default_sampler = ImageSamplerDescriptor::linear()
+        .set_address_mode(ImageAddressMode::Repeat)
+        .set_anisotropic_filter(16)
+        .clone();
+
    let default_plugins = DefaultPlugins
        .set(ImagePlugin {
-            default_sampler: ImageSamplerDescriptor {
-                address_mode_u: ImageAddressMode::Repeat,
-                address_mode_v: ImageAddressMode::Repeat,
-                address_mode_w: ImageAddressMode::Repeat,
-                ..ImageSamplerDescriptor::linear()
-            },
+            default_sampler: default_sampler.clone(),
+        })
+        .set(GltfPlugin {
+            default_sampler,
+            ..default()
        })
        .set(AssetPlugin {
            mode: Processed,
+            use_asset_processor_override: Some(cfg!(feature = "development")),
            ..default()
        });

-    App::new()
-        .add_plugins(default_plugins)
+    let mut app = App::new();
+    app.add_plugins(default_plugins)
        .add_plugins(avian3d::prelude::PhysicsPlugins::default())
-        .add_plugins(game_test::GamePlugin)
-        .add_plugins(FreeCameraPlugin)
-        .add_plugins(EguiPlugin::default())
-        .add_plugins(WorldInspectorPlugin::default()) // adds default options and `InspectorEguiImpl`s
-        .insert_resource(Time::<Fixed>::from_hz(60.0))
-        .run()
+        .add_plugins(shinespark::GamePlugin)
+        .insert_resource(Time::<Fixed>::from_hz(60.0));
+
+    #[cfg(feature = "debug_features")]
+    app.add_plugins((
+        FreeCameraPlugin,
+        EguiPlugin::default(),
+        WorldInspectorPlugin::default(),
+    ));
+
+    app.run()
 }
@@ -11,16 +11,21 @@ use crate::{
    AppState,
    args::Args,
    fighter::{
-        FighterId,
+        FighterId, FighterRoster,
        animation::AnimKind,
        attack::{AttackKind, FighterAttackScriptAssets},
-        baked_animation::BakedFighterAnimations,
+        baked_animation::{BAKED_ANIMATION_FPS, BakedFighterAnimations},
        manifest::{FighterManifest, FighterManifestRegistry},
        spawn_fighter,
        visual::FighterAnimations,
    },
+    input::{LocalInputAssignments, LocalInputSource},
+    match_runtime::MatchState,
    math::{int::FGi32, vec::FGVec2},
-    netcode::{GGRSCfg, session::create_session},
+    netcode::{
+        GGRSCfg,
+        session::{ConnectionStatus, SessionConfig, create_session},
+    },
    scripting::FighterAttackScript,
    stage::{
        self,
@@ -34,10 +39,49 @@ pub struct MatchPlayer {
    pub fighter: FighterId,
 }

-#[derive(Resource, Debug, Clone, PartialEq, Eq)]
-pub struct PendingMatch {
+#[derive(Resource, Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+pub struct MatchConfig {
    pub stage: StageId,
    pub players: Vec<MatchPlayer>,
+    pub rules: MatchRules,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+pub enum MatchRules {
+    Stock {
+        starting_stocks: u8,
+        time_limit_frames: Option<u32>,
+    },
+    Timed {
+        time_limit_frames: u32,
+    },
+}
+
+impl Default for MatchRules {
+    fn default() -> Self {
+        Self::Stock {
+            starting_stocks: 3,
+            time_limit_frames: None,
+        }
+    }
+}
+
+impl MatchRules {
+    fn validate(&self) -> Result<(), &'static str> {
+        match self {
+            Self::Stock {
+                starting_stocks: 0, ..
+            } => Err("stock matches must start with at least one stock"),
+            Self::Stock {
+                time_limit_frames: Some(0),
+                ..
+            } => Err("stock match time limits must be greater than zero frames"),
+            Self::Timed {
+                time_limit_frames: 0,
+            } => Err("timed match limits must be greater than zero frames"),
+            _ => Ok(()),
+        }
+    }
 }

 pub struct SelectedFighterAssets {
@@ -55,7 +99,7 @@ pub struct MatchAssets {

 impl MatchAssets {
    fn requested(world: &World) -> Self {
-        let request = world.resource::<PendingMatch>();
+        let config = world.resource::<MatchConfig>();
        let asset_server = world.resource::<AssetServer>();
        let registry = world.resource::<FighterManifestRegistry>();
        let stage_registry = world.resource::<StageManifestRegistry>();
@@ -63,7 +107,7 @@ impl MatchAssets {
        let stage_manifests = world.resource::<Assets<StageManifest>>();

        let stage_handle = stage_registry
-            .get(request.stage)
+            .get(config.stage)
            .expect("Startup validation guarantees every stage has a manifest");
        let stage_manifest = stage_manifests
            .get(&stage_handle)
@@ -71,7 +115,7 @@ impl MatchAssets {

        Self {
            stage: asset_server.load(stage_manifest.model_path.clone()),
-            fighters: request
+            fighters: config
                .players
                .iter()
                .map(|player| {
@@ -137,30 +181,34 @@ pub struct MatchRoot;
 pub fn initiate_match(
    commands: &mut Commands,
    next_state: &mut NextState<AppState>,
-    request: PendingMatch,
+    config: MatchConfig,
 ) {
-    commands.insert_resource(request);
+    commands.remove_resource::<crate::netcode::session::MatchDisconnected>();
+    commands.insert_resource(config);
    next_state.set(AppState::LoadingMatch);
 }

 pub fn initiate_default_match(
    mut commands: Commands,
    args: Res<Args>,
+    gamepads: Query<Entity, With<Gamepad>>,
+    mut assigments: ResMut<LocalInputAssignments>,
    mut next_state: ResMut<NextState<AppState>>,
    completed: Option<Res<crate::replay::ReplayComplete>>,
 ) {
+    if !args.debug_match {
+        next_state.set(AppState::MainMenu);
+        return;
+    }
    if completed.is_some() {
        return;
    }
    if let Some(path) = &args.play_replay {
        match crate::replay::load(path) {
            Ok(replay) => {
-                let request = PendingMatch {
-                    stage: replay.match_config.stage,
-                    players: replay.match_config.players.clone(),
-                };
+                let config = replay.match_config.clone();
                commands.insert_resource(crate::replay::LoadedReplay(replay));
-                initiate_match(&mut commands, &mut next_state, request);
+                initiate_match(&mut commands, &mut next_state, config);
            }
            Err(error) => {
                error!("Replay load failed: {error}");
@@ -169,9 +217,14 @@ pub fn initiate_default_match(
        }
        return;
    }
-    if !args.synctest {
-        return;
-    }
+    let session_config = match SessionConfig::from_args(&args, args.players) {
+        Ok(config) => config,
+        Err(error) => {
+            error!("Invalid network configuration: {error}");
+            next_state.set(AppState::MatchLoadFailed);
+            return;
+        }
+    };
    let players = (0..args.players)
        .map(|handle| MatchPlayer {
            handle,
@@ -179,22 +232,41 @@ pub fn initiate_default_match(
        })
        .collect();

+    assigments.clear();
+    let local_handles = session_config
+        .players
+        .iter()
+        .enumerate()
+        .filter_map(|(handle, player)| {
+            matches!(player, crate::netcode::session::PlayerConnection::Local).then_some(handle)
+        });
+    let mut local_handles = local_handles;
+    if let Some(handle) = local_handles.next() {
+        assigments.push((handle, LocalInputSource::Keyboard));
+    }
+
+    for (entity, handle) in gamepads.iter().zip(local_handles) {
+        assigments.push((handle, LocalInputSource::Gamepad(entity)));
+    }
+
    initiate_match(
        &mut commands,
        &mut next_state,
-        PendingMatch {
+        MatchConfig {
            stage: StageId::TestStage,
            players,
+            rules: MatchRules::default(),
        },
    );
 }

 pub fn prepare_match(
    mut commands: Commands,
-    request: Res<PendingMatch>,
+    config: Res<MatchConfig>,
    assets: Res<MatchAssets>,
    gltfs: Res<Assets<Gltf>>,
    baked_animations: Res<Assets<BakedFighterAnimations>>,
+    attack_scripts: Res<Assets<FighterAttackScript>>,
    registry: Res<FighterManifestRegistry>,
    stage_registry: Res<StageManifestRegistry>,
    manifests: Res<Assets<FighterManifest>>,
@@ -202,7 +274,7 @@ pub fn prepare_match(
    args: Res<Args>,
    mut next_state: ResMut<NextState<AppState>>,
 ) {
-    if !valid_player_handles(&request.players) {
+    if !valid_player_handles(&config.players) {
        fail_match(
            &mut next_state,
            "player handles must be unique and cover 0..player_count",
@@ -210,7 +282,12 @@ pub fn prepare_match(
        return;
    }

-    if assets.fighters.len() != request.players.len() {
+    if let Err(error) = config.rules.validate() {
+        fail_match(&mut next_state, error);
+        return;
+    }
+
+    if assets.fighters.len() != config.players.len() {
        fail_match(
            &mut next_state,
            "loaded character assets do not match the requested player slots",
@@ -239,6 +316,98 @@ pub fn prepare_match(
            );
            return;
        };
+        if baked.frame_rate != BAKED_ANIMATION_FPS {
+            fail_match(
+                &mut next_state,
+                &format!(
+                    "{:?} baked animation rate is {}, expected {}",
+                    character.fighter, baked.frame_rate, BAKED_ANIMATION_FPS
+                ),
+            );
+            return;
+        }
+        if !baked.has_unique_bone_names() {
+            fail_match(
+                &mut next_state,
+                &format!(
+                    "{:?} baked animation contains duplicate bone names",
+                    character.fighter
+                ),
+            );
+            return;
+        }
+
+        let ecb_bone_indices = baked.bone_names.iter().enumerate().filter_map(|(idx, name)| {
+            if manifest.ecb_bones.contains(name) {
+                Some(idx)
+            } else {
+                None
+            }
+        }).collect::<Vec<_>>();
+
+        if let Err(error) = manifest.attributes.validate() {
+            fail_match(
+                &mut next_state,
+                &format!("{:?} has invalid attributes: {error}", character.fighter),
+            );
+            return;
+        }
+        for (index, hurtbox) in manifest.hurtboxes.iter().enumerate() {
+            if let Err(error) = hurtbox.validate() {
+                fail_match(
+                    &mut next_state,
+                    &format!(
+                        "{:?} hurtbox {index} is invalid: {error}",
+                        character.fighter
+                    ),
+                );
+                return;
+            }
+            if !baked.contains_bone(&hurtbox.bone) {
+                fail_match(
+                    &mut next_state,
+                    &format!(
+                        "{:?} hurtbox {index} references missing bone {:?}",
+                        character.fighter, hurtbox.bone
+                    ),
+                );
+                return;
+            }
+        }
+        for (kind, handle) in &character.attack_scripts {
+            let Some(script) = attack_scripts.get(handle) else {
+                fail_match(
+                    &mut next_state,
+                    &format!(
+                        "{:?} {kind:?} attack script is unavailable",
+                        character.fighter
+                    ),
+                );
+                return;
+            };
+            if let Err(error) = script.validate() {
+                fail_match(
+                    &mut next_state,
+                    &format!(
+                        "{:?} {kind:?} attack script is invalid: {error}",
+                        character.fighter
+                    ),
+                );
+                return;
+            }
+            for hitbox in &script.hitboxes {
+                if !baked.contains_bone(&hitbox.bone) {
+                    fail_match(
+                        &mut next_state,
+                        &format!(
+                            "{:?} {kind:?} hitbox {} references missing bone {:?}",
+                            character.fighter, hitbox.id, hitbox.bone
+                        ),
+                    );
+                    return;
+                }
+            }
+        }
        let Some(scene) = gltf.scenes.first().cloned() else {
            fail_match(&mut next_state, "a character GLTF contains no scene");
            return;
@@ -270,10 +439,27 @@ pub fn prepare_match(
            scripts: character.attack_scripts.clone(),
        };

-        prepared.push((scene, animations, attack_scripts, manifest_handle));
+        prepared.push((
+            scene,
+            animations,
+            attack_scripts,
+            manifest_handle,
+            manifest.model_scale,
+            ecb_bone_indices,
+        ));
    }

-    let session = match create_session(&args, request.players.len()) {
+    let session_config = match SessionConfig::from_args(&args, config.players.len()) {
+        Ok(config) => config,
+        Err(error) => {
+            fail_match(
+                &mut next_state,
+                &format!("invalid network configuration: {error}"),
+            );
+            return;
+        }
+    };
+    let session = match create_session(&args, config.players.len()) {
        Ok(session) => session,
        Err(error) => {
            fail_match(
@@ -287,7 +473,7 @@ pub fn prepare_match(
    let root = commands.spawn((Name::new("Match"), MatchRoot)).id();

    let stage_handle = stage_registry
-        .get(request.stage)
+        .get(config.stage)
        .expect("Initialization check should ensure all stages exist");
    let stage_manifest = stage_manifests
        .get(&stage_handle)
@@ -300,21 +486,28 @@ pub fn prepare_match(
        stage_manifest.camera.clone(),
    );

-    for (index, (player, (scene, animations, attack_scripts, manifest_handle))) in
-        request.players.iter().zip(prepared).enumerate()
+    let mut fighter_roster = Vec::with_capacity(config.players.len());
+    for (index, (player, (scene, animations, attack_scripts, manifest_handle, model_scale, ecb_bone_indices))) in
+        config.players.iter().zip(prepared).enumerate()
    {
-        let spawn_x = (index as i32 * 2 + 1 - request.players.len() as i32) * 5;
-        spawn_fighter(
+        let spawn_x = (index as i32 * 2 + 1 - config.players.len() as i32) * 5;
+        fighter_roster.push(spawn_fighter(
            &mut commands,
            player.handle,
            FGVec2::new(FGi32::from_num(spawn_x), FGi32::lit("12.5")),
            manifest_handle.clone(),
+            model_scale,
            animations,
            attack_scripts,
            WorldAssetRoot(scene),
-        );
+            ecb_bone_indices
+        ));
    }

+    commands.insert_resource(FighterRoster(fighter_roster));
+    commands.insert_resource(MatchState::from_config(&config));
+    commands.insert_resource(session_config);
+    commands.insert_resource(ConnectionStatus::default());
    commands.insert_resource::<Session<GGRSCfg>>(session);
    next_state.set(AppState::InMatch);
 }
@@ -345,9 +538,13 @@ pub fn cleanup_match(
        commands.entity(fighter).despawn();
    }
    commands.remove_resource::<Session<GGRSCfg>>();
+    commands.remove_resource::<SessionConfig>();
+    commands.remove_resource::<ConnectionStatus>();
    commands.remove_resource::<stage::line::StageCollision>();
    commands.remove_resource::<MatchAssets>();
-    commands.remove_resource::<PendingMatch>();
+    commands.remove_resource::<MatchConfig>();
+    commands.remove_resource::<MatchState>();
+    commands.remove_resource::<FighterRoster>();
 }

 #[cfg(test)]
@@ -355,8 +552,8 @@ mod tests {
    use super::*;

    #[test]
-    fn match_request_keeps_duplicate_fighter_slots() {
-        let request = PendingMatch {
+    fn match_config_keeps_duplicate_fighter_slots() {
+        let config = MatchConfig {
            stage: StageId::TestStage,
            players: vec![
                MatchPlayer {
@@ -368,12 +565,13 @@ mod tests {
                    fighter: FighterId::TestFighter,
                },
            ],
+            rules: MatchRules::default(),
        };

-        assert_eq!(request.players.len(), 2);
-        assert_eq!(request.players[0].handle, 0);
-        assert_eq!(request.players[1].handle, 1);
-        assert!(valid_player_handles(&request.players));
+        assert_eq!(config.players.len(), 2);
+        assert_eq!(config.players[0].handle, 0);
+        assert_eq!(config.players[1].handle, 1);
+        assert!(valid_player_handles(&config.players));
    }

    #[test]
@@ -392,6 +590,53 @@ mod tests {
        assert!(!valid_player_handles(&players));
    }

+    #[test]
+    fn match_rules_reject_zero_limits() {
+        assert!(
+            MatchRules::Stock {
+                starting_stocks: 0,
+                time_limit_frames: None,
+            }
+            .validate()
+            .is_err()
+        );
+        assert!(
+            MatchRules::Stock {
+                starting_stocks: 3,
+                time_limit_frames: Some(0),
+            }
+            .validate()
+            .is_err()
+        );
+        assert!(
+            MatchRules::Timed {
+                time_limit_frames: 0,
+            }
+            .validate()
+            .is_err()
+        );
+    }
+
+    #[test]
+    fn match_rules_accept_valid_modes() {
+        assert!(MatchRules::default().validate().is_ok());
+        assert!(
+            MatchRules::Stock {
+                starting_stocks: 3,
+                time_limit_frames: Some(60),
+            }
+            .validate()
+            .is_ok()
+        );
+        assert!(
+            MatchRules::Timed {
+                time_limit_frames: 60,
+            }
+            .validate()
+            .is_ok()
+        );
+    }
+
    #[test]
    fn match_loading_waits_for_attack_scripts() {
        let mut attack_scripts = HashMap::new();
@@ -0,0 +1,102 @@
+//! Rollback-simulated state for an active match.
+
+use bevy::prelude::*;
+use bevy_ggrs::prelude::*;
+
+use crate::match_loading::{MatchConfig, MatchRules};
+
+#[derive(Resource, Clone, Debug, Hash, PartialEq, Eq)]
+pub struct MatchState {
+    pub elapsed_frames: u32,
+    /// Indexed by the player's session handle.
+    pub players: Vec<PlayerMatchState>,
+}
+
+#[derive(Clone, Debug, Hash, PartialEq, Eq)]
+pub struct PlayerMatchState {
+    pub stocks_remaining: Option<u8>,
+    pub score: i32,
+    pub deaths: u32,
+}
+
+impl MatchState {
+    pub fn from_config(config: &MatchConfig) -> Self {
+        let stocks_remaining = match &config.rules {
+            MatchRules::Stock {
+                starting_stocks, ..
+            } => Some(*starting_stocks),
+            MatchRules::Timed { .. } => None,
+        };
+
+        Self {
+            elapsed_frames: 0,
+            players: (0..config.players.len())
+                .map(|_| PlayerMatchState {
+                    stocks_remaining,
+                    score: 0,
+                    deaths: 0,
+                })
+                .collect(),
+        }
+    }
+}
+
+pub struct MatchRuntimePlugin;
+
+impl Plugin for MatchRuntimePlugin {
+    fn build(&self, app: &mut App) {
+        app.rollback_resource_with_clone::<MatchState>()
+            .checksum_resource_with_hash::<MatchState>();
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::{fighter::FighterId, match_loading::MatchPlayer, stage::manifest::StageId};
+
+    fn config(rules: MatchRules) -> MatchConfig {
+        MatchConfig {
+            stage: StageId::TestStage,
+            players: vec![
+                MatchPlayer {
+                    handle: 1,
+                    fighter: FighterId::TestFighter,
+                },
+                MatchPlayer {
+                    handle: 0,
+                    fighter: FighterId::TestFighter,
+                },
+            ],
+            rules,
+        }
+    }
+
+    #[test]
+    fn stock_state_starts_with_configured_stocks() {
+        let state = MatchState::from_config(&config(MatchRules::Stock {
+            starting_stocks: 4,
+            time_limit_frames: Some(60),
+        }));
+
+        assert_eq!(state.elapsed_frames, 0);
+        assert_eq!(state.players.len(), 2);
+        assert!(state.players.iter().all(|player| {
+            player.stocks_remaining == Some(4) && player.score == 0 && player.deaths == 0
+        }));
+    }
+
+    #[test]
+    fn timed_state_has_no_stock_counter() {
+        let state = MatchState::from_config(&config(MatchRules::Timed {
+            time_limit_frames: 60,
+        }));
+
+        assert!(
+            state
+                .players
+                .iter()
+                .all(|player| player.stocks_remaining.is_none())
+        );
+    }
+}
@@ -0,0 +1,136 @@
+use std::io;
+
+use bevy::prelude::*;
+
+use crate::math::{
+    int::{FGWide, FGi32, FGi32Ext},
+    vec3::FGVec3,
+};
+
+/// Parent transforms are composed after quantization, which makes every runtime sample platform-independent.
+#[derive(Clone, Copy, Debug, PartialEq, Eq, serde::Serialize, serde::Deserialize, Hash)]
+pub struct FixedMat4 {
+    pub cols: [[FGi32; 4]; 4],
+}
+
+impl FixedMat4 {
+    pub const IDENTITY: Self = Self {
+        cols: [
+            [FGi32::ONE, FGi32::ZERO, FGi32::ZERO, FGi32::ZERO],
+            [FGi32::ZERO, FGi32::ONE, FGi32::ZERO, FGi32::ZERO],
+            [FGi32::ZERO, FGi32::ZERO, FGi32::ONE, FGi32::ZERO],
+            [FGi32::ZERO, FGi32::ZERO, FGi32::ZERO, FGi32::ONE],
+        ],
+    };
+
+    pub fn from_mat4(matrix: Mat4) -> io::Result<Self> {
+        let values = matrix.to_cols_array();
+        let mut cols = [[FGi32::ZERO; 4]; 4];
+        for (index, value) in values.into_iter().enumerate() {
+            cols[index / 4][index % 4] = FGi32::checked_from_num(value).ok_or_else(|| {
+                io::Error::new(
+                    io::ErrorKind::InvalidData,
+                    "animation transform overflows Q16.16",
+                )
+            })?;
+        }
+        Ok(Self { cols })
+    }
+
+    pub fn to_mat4(self) -> Mat4 {
+        Mat4::from_cols_array_2d(&self.cols.map(|column| column.map(|value| value.to_num())))
+    }
+
+    pub fn mul(self, rhs: Self) -> Self {
+        let mut cols = [[FGi32::ZERO; 4]; 4];
+        for column in 0..4 {
+            for row in 0..4 {
+                let mut value = FGWide::ZERO;
+                for k in 0..4 {
+                    value +=
+                        FGWide::from_num(self.cols[k][row]) * FGWide::from_num(rhs.cols[column][k]);
+                }
+                cols[column][row] = FGi32::from_num(value);
+            }
+        }
+        Self { cols }
+    }
+
+    pub fn transform_point(self, point: FGVec3) -> FGVec3 {
+        let input = [point.x, point.y, point.z, FGi32::ONE];
+        let mut output = [FGi32::ZERO; 3];
+        for row in 0..3 {
+            let mut value = FGWide::ZERO;
+            for (column, input) in input.into_iter().enumerate() {
+                value += FGWide::from_num(self.cols[column][row]) * FGWide::from_num(input);
+            }
+            output[row] = FGi32::from_num(value);
+        }
+        FGVec3 {
+            x: output[0],
+            y: output[1],
+            z: output[2],
+        }
+    }
+
+    pub fn translate(&mut self, translation: FGVec3) {
+        self.cols[3][0] = translation.x;
+        self.cols[3][1] = translation.y;
+        self.cols[3][2] = translation.z;
+    }
+    pub fn with_translation(mut self, translation: FGVec3) -> Self {
+        self.translate(translation);
+        self
+    }
+
+    pub fn with_rotation(mut self, rotation: FGVec3) -> Self {
+        let (sin_x, cos_x) = rotation.x.sin_cos_rads();
+        let (sin_y, cos_y) = rotation.y.sin_cos_rads();
+        let (sin_z, cos_z) = rotation.z.sin_cos_rads();
+        self.cols[0][0] = cos_y * cos_z;
+        self.cols[0][1] = cos_x * sin_z + sin_x * sin_y * cos_z;
+        self.cols[0][2] = sin_x * sin_z - cos_x * sin_y * cos_z;
+        self.cols[1][0] = -cos_y * sin_z;
+        self.cols[1][1] = cos_x * cos_z - sin_x * sin_y * sin_z;
+        self.cols[1][2] = sin_x * cos_z + cos_x * sin_y * sin_z;
+        self.cols[2][0] = sin_y;
+        self.cols[2][1] = -sin_x * cos_y;
+        self.cols[2][2] = cos_x * cos_y;
+        self
+    }
+
+    pub fn get_translation(&self) -> FGVec3 {
+        FGVec3::new(self.cols[3][0], self.cols[3][1], self.cols[3][2])
+    }
+
+    pub fn rotate_y(self, quarter_turns: u8) -> Self {
+        let rotation = match quarter_turns % 4 {
+            0 => Self::IDENTITY,
+            1 => Self {
+                cols: [
+                    [FGi32::ZERO, FGi32::ZERO, FGi32::NEG_ONE, FGi32::ZERO],
+                    [FGi32::ZERO, FGi32::ONE, FGi32::ZERO, FGi32::ZERO],
+                    [FGi32::ONE, FGi32::ZERO, FGi32::ZERO, FGi32::ZERO],
+                    [FGi32::ZERO, FGi32::ZERO, FGi32::ZERO, FGi32::ONE],
+                ],
+            },
+            2 => Self {
+                cols: [
+                    [FGi32::NEG_ONE, FGi32::ZERO, FGi32::ZERO, FGi32::ZERO],
+                    [FGi32::ZERO, FGi32::ONE, FGi32::ZERO, FGi32::ZERO],
+                    [FGi32::ZERO, FGi32::ZERO, FGi32::NEG_ONE, FGi32::ZERO],
+                    [FGi32::ZERO, FGi32::ZERO, FGi32::ZERO, FGi32::ONE],
+                ],
+            },
+            _ => Self {
+                cols: [
+                    [FGi32::ZERO, FGi32::ZERO, FGi32::ONE, FGi32::ZERO],
+                    [FGi32::ZERO, FGi32::ONE, FGi32::ZERO, FGi32::ZERO],
+                    [FGi32::NEG_ONE, FGi32::ZERO, FGi32::ZERO, FGi32::ZERO],
+                    [FGi32::ZERO, FGi32::ZERO, FGi32::ZERO, FGi32::ONE],
+                ],
+            },
+        };
+        self.mul(rotation)
+    }
+}
@@ -4,7 +4,7 @@ pub type FGWide = fixed::FixedI128<fixed::types::extra::U32>;
 /// Angle conversions for the game's Q16.16 fixed-point values.
 pub trait FGi32Ext {
    fn to_radians(self) -> FGi32;
-    fn sin_cos(self) -> (FGi32, FGi32);
+    fn sin_cos_rads(self) -> (FGi32, FGi32);
 }

 impl FGi32Ext for FGi32 {
@@ -12,7 +12,7 @@ impl FGi32Ext for FGi32 {
        FGi32::from_num(FGWide::from_num(self) * FGWide::lit("0.01745329251994329576923690768489"))
    }

-    fn sin_cos(self) -> (FGi32, FGi32) {
+    fn sin_cos_rads(self) -> (FGi32, FGi32) {
        const PI: FGi32 = FGi32::lit("3.14159265358979323846");
        const HALF_PI: FGi32 = FGi32::lit("1.57079632679489661923");
        const TWO_PI: FGi32 = FGi32::lit("6.28318530717958647692");
@@ -1,4 +1,5 @@
 pub mod int;
 pub mod segment;
 pub mod vec;
+pub mod fixed_transform;
 pub mod vec3;
@@ -1,4 +1,3 @@
-
 use bevy::prelude::*;

 use crate::math::{
@@ -131,9 +130,6 @@ impl FGSegment2d {
        let t = (s2_x * (p0_y - p2_y) - s2_y * (p0_x - p2_x)) / denom;

        if s >= FGWide::ZERO && s <= FGWide::ONE && t >= FGWide::ZERO && t <= FGWide::ONE {
-            if self.left_normal().dot(rhs.point2() - rhs.point1()) >= FGi32::ZERO {
-                return None;
-            }
            Some(FGVec2::new(
                FGi32::from_num(p0_x + t * s1_x),
                FGi32::from_num(p0_y + t * s1_y),
@@ -142,6 +138,15 @@ impl FGSegment2d {
            None
        }
    }
+
+    /// Returns a value representing the normalized position along the segment.
+    pub fn project_point_normalized(&self, point: FGVec2) -> FGi32 {
+        let segment_vector = self.point2 - self.point1;
+        let offset = point - self.point1;
+        // The signed projection of `offset` onto `segment_vector`, scaled by the length of the segment.
+        let projection_scaled = segment_vector.dot(offset);
+        FGi32::from_num(FGWide::from_num(projection_scaled) / segment_vector.length_squared())
+    }
 }

 #[cfg(test)]
@@ -2,7 +2,7 @@ use bevy::math::Vec2;
 use bevy::prelude::*;
 use fixed::types::I32F32;
 use serde::{Deserialize, Serialize};
-use std::ops::{Add, AddAssign, Div, Mul, MulAssign, Sub};
+use std::ops::{Add, AddAssign, Div, Mul, MulAssign, Sub, SubAssign};

 use super::int::{FGWide, FGi32};

@@ -227,6 +227,15 @@ impl AddAssign for FGVec2 {
    }
 }

+impl SubAssign for FGVec2 {
+    fn sub_assign(&mut self, rhs: Self) {
+        *self = Self {
+            x: self.x - rhs.x,
+            y: self.y - rhs.y,
+        }
+    }
+}
+
 impl MulAssign for FGVec2 {
    fn mul_assign(&mut self, rhs: Self) {
        *self = Self {
@@ -1,11 +1,20 @@
-use bevy::{input_focus::InputFocus, picking::{hover::PickingInteraction, Pickable}, prelude::*, text::FontSourceTemplate, ui::auto_directional_navigation::AutoDirectionalNavigation};
+use bevy::{
+    input_focus::InputFocus,
+    picking::{Pickable, hover::PickingInteraction},
+    prelude::*,
+    text::FontSourceTemplate,
+    ui::auto_directional_navigation::AutoDirectionalNavigation,
+};

-use crate::{game_settings::CommonAssets, menus::style::{FGUiButtonType, FGUiStyle}};
+use crate::{
+    game_settings::CommonAssets,
+    menus::style::{FGUiButtonType, FGUiStyle},
+};

 #[derive(Component, Default, Clone)]
 #[require(Button)]
 pub struct FGUiButton {
-    pub button_type: FGUiButtonType
+    pub button_type: FGUiButtonType,
 }

 pub fn menu_button(label: &str) -> impl Scene {
@@ -37,16 +46,35 @@ pub fn menu_button(label: &str) -> impl Scene {
    }
 }

-pub fn button_setup(query: Query<(Entity, &FGUiButton, &mut Node), Added<FGUiButton>>, common_assets: Res<CommonAssets>, styles: Res<Assets<FGUiStyle>>, mut commands: Commands) {
-    let styles = styles.get(&common_assets.ui_style).expect("UI styles should be loaded");
+pub fn button_setup(
+    query: Query<(Entity, &FGUiButton, &mut Node), Added<FGUiButton>>,
+    common_assets: Res<CommonAssets>,
+    styles: Res<Assets<FGUiStyle>>,
+    mut commands: Commands,
+) {
+    let styles = styles
+        .get(&common_assets.ui_style)
+        .expect("UI styles should be loaded");
    for (entity, button, mut node) in query {
-        styles.button_styles[&button.button_type].normal.apply(&mut commands, entity, &mut node);
+        styles.button_styles[&button.button_type]
+            .normal
+            .apply(&mut commands, entity, &mut node);
    }
 }

-pub fn button_style_system(query: Query<(Entity, &FGUiButton, &PickingInteraction, &mut Node), Changed<PickingInteraction>>, common_assets: Res<CommonAssets>, styles: Res<Assets<FGUiStyle>>, mut commands: Commands) {
-    let styles = styles.get(&common_assets.ui_style).expect("UI styles should be loaded");
-    
+pub fn button_style_system(
+    query: Query<
+        (Entity, &FGUiButton, &PickingInteraction, &mut Node),
+        Changed<PickingInteraction>,
+    >,
+    common_assets: Res<CommonAssets>,
+    styles: Res<Assets<FGUiStyle>>,
+    mut commands: Commands,
+) {
+    let styles = styles
+        .get(&common_assets.ui_style)
+        .expect("UI styles should be loaded");
+
    for (entity, button, interaction, mut node) in query {
        let button_style_to_use = match interaction {
            PickingInteraction::Pressed => &styles.button_styles[&button.button_type].press,
@@ -57,14 +85,21 @@ pub fn button_style_system(query: Query<(Entity, &FGUiButton, &PickingInteractio
    }
 }

-pub fn button_focus_style_system(query: Query<(Entity, &FGUiButton)>, focus: Res<InputFocus>, mut commands: Commands, common_assets: Res<CommonAssets>, styles: Res<Assets<FGUiStyle>>) {
+pub fn button_focus_style_system(
+    query: Query<(Entity, &FGUiButton)>,
+    focus: Res<InputFocus>,
+    mut commands: Commands,
+    common_assets: Res<CommonAssets>,
+    styles: Res<Assets<FGUiStyle>>,
+) {
    if let Some(focused_entity) = focus.get() {
-        
        if !query.contains(focused_entity) {
            return;
        }
-        
-        let styles = styles.get(&common_assets.ui_style).expect("UI styles should be loaded");
+
+        let styles = styles
+            .get(&common_assets.ui_style)
+            .expect("UI styles should be loaded");

        for (entity, button) in query {
            if focused_entity == entity {
@@ -72,7 +107,7 @@ pub fn button_focus_style_system(query: Query<(Entity, &FGUiButton)>, focus: Res
                commands.entity(focused_entity).insert(Outline {
                    width: px(style.focus_outline_width_px),
                    offset: px(style.focus_outline_offset_px),
-                    color: style.focus_outline_color
+                    color: style.focus_outline_color,
                });
            } else {
                commands.entity(entity).remove::<Outline>();
@@ -1,13 +1,14 @@
-use bevy::{picking::Pickable, prelude::*, text::FontSourceTemplate, ui::widget::ImageNodeSize};
+use bevy::{picking::Pickable, prelude::*, text::FontSourceTemplate};

 use crate::{
-    fighter::{FighterId, manifest::FighterManifest}, menus::{button::FGUiButton, style::FGUiButtonType},
+    fighter::{FighterId, manifest::FighterManifest},
+    menus::{button::FGUiButton, style::FGUiButtonType},
 };

 #[derive(Component, Clone, FromTemplate)]
 pub struct CharacterBox {
    pub fighter_manifest: Handle<FighterManifest>,
-    pub fighter_id: FighterId
+    pub fighter_id: FighterId,
 }

 impl CharacterBox {
@@ -1,3 +1 @@
-pub enum CharacterSelectErrors {
-    
-}
+pub enum CharacterSelectErrors {}
@@ -4,7 +4,7 @@ pub struct FighterPortrait {
 }

 impl FighterPortrait {
-    pub fn create(player_slot: usize) -> impl Scene {
+    pub fn create(_player_slot: usize) -> impl Scene {
        bsn![
            Node {
                max_width: px(300),
@@ -1,20 +1,8 @@
-use bevy::{
-    picking::pointer::{PointerId, PointerLocation},
-    prelude::*,
-};
-use bevy_egui::egui::accesskit::TextAlign;
+use bevy::{picking::pointer::PointerId, prelude::*};

 use crate::{
    AppState, fighter::manifest::{FighterManifest, FighterManifestRegistry}, game_settings::CommonAssets, input::{LocalInputAssignments, LocalInputSource}, menus::{
-        MenuMarker, build_menu_with_props,
-        button::FGUiButton,
-        character_select::character_box::CharacterBox,
-        cursor::{FGMenuCursor, MenuCursorInputSource},
-        errors::MenuErrors::{self, FighterManifestNotFound},
-        match_config::{MenuMatchConfig, MenuMatchPlayerSlot},
-        scaling, spawn_menu,
-        style::{FGUiButtonType, FGUiStyle},
-        wrap_menu,
+        MenuCameraMarker, MenuMarker, button::FGUiButton, character_select::{character_box::CharacterBox, token::CharacterSelectToken}, cursor::{FGMenuCursor, MenuCursorInputSource}, errors::MenuErrors::FighterManifestNotFound, match_config::{MenuMatchConfig, MenuMatchPlayerSlot}, scaling, spawn_menu, style::{FGUiButtonType, FGUiStyle},
    },
 };

@@ -38,10 +26,10 @@ pub fn setup_character_select(
    existing_menu: Option<Single<Entity, With<MenuMarker>>>,
    mut commands: Commands,
    manifest_registry: Res<FighterManifestRegistry>,
-    assignments: Res<LocalInputAssignments>,
+    _assignments: Res<LocalInputAssignments>,
    manifests: Res<Assets<FighterManifest>>,
-    common_assets: Res<CommonAssets>,
-    styles: Res<Assets<FGUiStyle>>,
+    _common_assets: Res<CommonAssets>,
+    _styles: Res<Assets<FGUiStyle>>,
 ) {
    let character_boxes = manifest_registry
        .iter()
@@ -67,31 +55,6 @@ pub fn setup_character_select(
            }
            Children [
                {character_boxes},
-                (
-                    // Start banner thingy
-                    StartButtonBanner
-                    Node {
-                        position_type: PositionType::Absolute,
-                        justify_content: JustifyContent::Center,
-                        align_items: AlignItems::Center,
-                        width: percent(100),
-                    }
-                    FGUiButton {
-                        button_type: FGUiButtonType::CharacterSelectStartBanner
-                    }
-                    Text::new("Peenids")
-                    Visibility::Hidden
-                    TextLayout {
-                        justify: Justify::Center
-                    }
-                    TextFont {
-                        font_size: FontSize::Px(48.0),
-                    }
-                    TextColor(Color::WHITE)
-                    BackgroundColor(Color::BLACK)
-                    GlobalZIndex(500)
-                    on(|_ev: On<Pointer<Press>>, mut next_state: ResMut<NextState<AppState>>| next_state.set(AppState::StageSelect))
-                )
            ]
        ),
        (
@@ -99,9 +62,34 @@ pub fn setup_character_select(
            Node {
                flex_direction: FlexDirection::Row,
                width: percent(100),
-                height: px(400),
+                min_height: px(400),
                justify_content: JustifyContent::Center
            }
+        ),
+        (
+            // Start banner thingy
+            StartButtonBanner
+            Node {
+                position_type: PositionType::Absolute,
+                justify_content: JustifyContent::Center,
+                align_items: AlignItems::Center,
+                width: percent(100),
+            }
+            FGUiButton {
+                button_type: FGUiButtonType::CharacterSelectStartBanner
+            }
+            Text::new("Start poetry")
+            Visibility::Hidden
+            TextLayout {
+                justify: Justify::Center
+            }
+            TextFont {
+                font_size: FontSize::Px(48.0),
+            }
+            TextColor(Color::WHITE)
+            BackgroundColor(Color::BLACK)
+            GlobalZIndex(500)
+            on(|_ev: On<Pointer<Press>>, mut next_state: ResMut<NextState<AppState>>| next_state.set(AppState::StageSelect))
        )
        ]
    };
@@ -113,7 +101,7 @@ pub fn setup_character_select(
 pub fn create_portrait(
    player_slot: usize,
    container: Entity,
-    mut commands: Commands,
+    commands: &mut Commands,
    style: &FGUiStyle,
    input_source: &LocalInputSource,
 ) {
@@ -123,7 +111,7 @@ pub fn create_portrait(
    commands.entity(container).add_child(entity);

    let cursor = commands
-        .spawn(FGMenuCursor::create_cursor(
+        .spawn(FGMenuCursor::create_player_cursor(
            player_slot,
            style,
            input_source,
@@ -137,36 +125,38 @@ pub fn create_portrait(
    commands.entity(container).add_child(entity);
 }

-#[derive(Event)]
+#[derive(Message)]
 pub struct PlayerSlotAssigned {
    pub slot: usize,
    pub input_source: LocalInputSource,
 }

 pub fn handle_fighter_slot_addition(
-    addition: On<PlayerSlotAssigned>,
+    mut addition: MessageReader<PlayerSlotAssigned>,
    query: Single<&CharacterSelectScreen>,
-    commands: Commands,
+    mut commands: Commands,
    common_assets: Res<CommonAssets>,
    styles: Res<Assets<FGUiStyle>>,
 ) {
-    let slot = addition.slot;
-    create_portrait(
-        slot,
-        query.fighter_portait_container,
-        commands,
-        styles
-            .get(&common_assets.ui_style)
-            .expect("UI Style should be loaded by now"),
-        &addition.input_source,
-    );
+    for addition in addition.read() {
+        let slot = addition.slot;
+        create_portrait(
+            slot,
+            query.fighter_portait_container,
+            &mut commands,
+            styles
+                .get(&common_assets.ui_style)
+                .expect("UI Style should be loaded by now"),
+            &addition.input_source,
+        );
+    }
 }

 pub fn css_auto_assign_slots(
    menu_inputs: Res<crate::menus::input::MenuInputState>,
    mut assignments: ResMut<LocalInputAssignments>,
    mut match_config: ResMut<MenuMatchConfig>,
-    mut commands: Commands,
+    mut ev_assigned: MessageWriter<PlayerSlotAssigned>,
 ) {
    for (source, input) in &menu_inputs.inputs {
        if input.movement != Vec2::ZERO {
@@ -178,7 +168,7 @@ pub fn css_auto_assign_slots(
                    fighter: None,
                });
                info!("New input assignment");
-                commands.trigger(PlayerSlotAssigned {
+                ev_assigned.write(PlayerSlotAssigned {
                    slot: free_idx,
                    input_source: source.clone(),
                });
@@ -189,7 +179,7 @@ pub fn css_auto_assign_slots(

 #[derive(Event)]
 pub struct FighterSelectedEvent {
-    slot: usize,
+    _slot: usize,
 }

 pub fn select_fighter(
@@ -209,7 +199,7 @@ pub fn select_fighter(
                    .get(&character_box.fighter_manifest)
                    .ok_or(FighterManifestNotFound)?;
                match_config.set_player_fighter(slot, Some(manifest.id))?;
-                commands.trigger(FighterSelectedEvent { slot });
+                commands.trigger(FighterSelectedEvent { _slot: slot });
            }
        }
    }
@@ -224,7 +214,11 @@ pub fn update_start_banner_visibility(
    config: Res<MenuMatchConfig>,
 ) {
    let match_ready = config.all_players_ready();
-    commands.entity(banner.into_inner()).insert(if match_ready {Visibility::Visible} else {Visibility::Hidden});
+    commands.entity(banner.into_inner()).insert(if match_ready {
+        Visibility::Visible
+    } else {
+        Visibility::Hidden
+    });
 }

 pub fn copy_cursor_transform_to_token(
@@ -236,7 +230,7 @@ pub fn copy_cursor_transform_to_token(
    character_boxes: Query<(&CharacterBox, &ComputedNode, &UiGlobalTransform)>,
    match_config: Res<MenuMatchConfig>,
    cursors: Query<&UiGlobalTransform, With<FGMenuCursor>>,
-    cam: Single<&Camera, With<IsDefaultUiCamera>>,
+    cam: Single<&Camera, With<MenuCameraMarker>>,
    ui_scale: Res<UiScale>,
 ) -> Result {
    let camera = cam.into_inner();
@@ -268,3 +262,9 @@ pub fn copy_cursor_transform_to_token(
    }
    Ok(())
 }
+
+pub fn despawn_tokens(tokens: Query<Entity, With<CharacterSelectToken>>, mut commands: Commands) {
+    for token in tokens {
+        commands.entity(token).despawn();
+    }
+}
@@ -7,16 +7,13 @@ use crate::menus::style::FGUiStyle;
 #[derive(Component, Clone)]
 pub struct CharacterSelectToken {
    pub slot: usize,
-    pub cursor: Entity
+    pub cursor: Entity,
 }

 impl CharacterSelectToken {
    pub fn create(cursor: Entity, slot: usize, style: &FGUiStyle) -> impl Bundle {
        (
-            CharacterSelectToken {
-                slot,
-                cursor
-            },
+            CharacterSelectToken { slot, cursor },
            Pickable::IGNORE,
            Node {
                position_type: PositionType::Absolute,
@@ -26,8 +23,13 @@ impl CharacterSelectToken {
            },
            ImageNode {
                image: style.css_token.handle.handle.clone(),
+                color: style
+                    .player_colors
+                    .get(slot)
+                    .copied()
+                    .unwrap_or(Color::WHITE),
                ..default()
-            }
+            },
        )
    }
-}
+}
@@ -9,7 +9,9 @@ use bevy::{
 };

 use crate::{
-    input::{LocalInputAssignments, LocalInputSource}, menus::{input::{MenuInput, MenuInputState}, scaling, style::FGUiStyle},
+    input::{LocalInputAssignments, LocalInputSource}, menus::{
+        MenuCameraMarker, input::{MenuInput, MenuInputState}, scaling, style::FGUiStyle,
+    },
 };

 #[derive(Default)]
@@ -28,20 +30,21 @@ pub struct FGMenuCursor {

 impl FGMenuCursor {
    pub fn create_cursor(
-        player_slot: usize,
+        input_source: MenuCursorInputSource,
        style: &FGUiStyle,
-        input_source: &LocalInputSource,
+        pointer_id: PointerId,
    ) -> impl Bundle {
-        let pointer_id = if matches!(input_source, LocalInputSource::Keyboard) {PointerId::Mouse} else {PointerId::Custom(Uuid::new_v4())};
        let circle_icon = style.cursor.handle().clone();
        (
            FGMenuCursor {
-                input_source: super::cursor::MenuCursorInputSource::Player(player_slot),
+                input_source: input_source,
                ..default()
            },
            Node {
                width: px(64),
                height: px(64),
+                left: percent(50),
+                top: percent(50),
                position_type: PositionType::Absolute,
                ..default()
            },
@@ -55,25 +58,42 @@ impl FGMenuCursor {
            Pickable::IGNORE,
        )
    }
+    pub fn create_shared_cursor(style: &FGUiStyle) -> impl Bundle {
+        Self::create_cursor(MenuCursorInputSource::Any, style, PointerId::Mouse)
+    }
+    pub fn create_player_cursor(
+        player_slot: usize,
+        style: &FGUiStyle,
+        input_source: &LocalInputSource,
+    ) -> impl Bundle {
+        let pointer_id = if matches!(input_source, LocalInputSource::Keyboard) {
+            PointerId::Mouse
+        } else {
+            PointerId::Custom(Uuid::new_v4())
+        };
+        Self::create_cursor(
+            MenuCursorInputSource::Player(player_slot),
+            style,
+            pointer_id,
+        )
+    }
 }

 /// The player using the keyboard can input things with the mouse, so we should copy their movement input
 pub fn copy_mouse_input(
    mut query: Query<(&FGMenuCursor, &mut PointerLocation, &PointerId)>,
    assignments: Res<LocalInputAssignments>,
-    mut input_events: MessageReader<Pointer<Move>>
+    mut input_events: MessageReader<Pointer<Move>>,
 ) {
-
    for event in input_events.read() {
        if let PointerId::Mouse = event.pointer_id {
            for (cursor, mut location, _) in query.iter_mut() {
                let is_mouse = match cursor.input_source {
                    MenuCursorInputSource::Any => true,
-                    MenuCursorInputSource::Player(slot) => {
-                        assignments.get(slot).map(|(_, source)| {
-                            matches!(source, LocalInputSource::Keyboard)
-                        }).unwrap_or_default()
-                    },
+                    MenuCursorInputSource::Player(slot) => assignments
+                        .get(slot)
+                        .map(|(_, source)| matches!(source, LocalInputSource::Keyboard))
+                        .unwrap_or_default(),
                };

                if is_mouse {
@@ -158,15 +178,24 @@ pub fn cursor_input(
 }

 pub fn update_cursor_transform(
-    camera: Single<&Camera, With<IsDefaultUiCamera>>,
-    query: Query<(&mut UiTransform, &PointerLocation), With<FGMenuCursor>>,
+    camera: Single<&Camera, With<MenuCameraMarker>>,
+    query: Query<(&mut Node, &PointerLocation), With<FGMenuCursor>>,
    ui_scale: Res<UiScale>,
 ) {
    let camera = camera.into_inner();

-    for (mut ui_trf, location) in query {
-        let ui_pos = scaling::logical_to_ui_position(location.location.as_ref().map(|d| d.position).unwrap_or_default(), camera, &ui_scale);
-        ui_trf.translation = Val2::new(px(ui_pos.x), px(ui_pos.y));
+    for (mut node, location) in query {
+        let ui_pos = scaling::logical_to_ui_position(
+            location
+                .location
+                .as_ref()
+                .map(|d| d.position)
+                .unwrap_or_default(),
+            camera,
+            &ui_scale,
+        );
+        node.left = px(ui_pos.x);
+        node.top = px(ui_pos.y);
    }
 }

@@ -1,6 +1,6 @@
-use bevy::{ecs::query::QueryEntityError, reflect::Reflect};
+use bevy::reflect::Reflect;

-use crate::{fighter::FighterId, menus::match_config::MenuMatchConfigErrors};
+use crate::menus::match_config::MenuMatchConfigErrors;

 #[derive(thiserror::Error, Debug, Reflect)]
 pub enum MenuErrors {
@@ -8,4 +8,4 @@ pub enum MenuErrors {
    FighterManifestNotFound,
    #[error("Match config error: {0:?}")]
    MatchConfigError(#[from] MenuMatchConfigErrors),
-}
+}
@@ -91,10 +91,14 @@ impl MenuInput {
        self.accept.accumulate(&other.accept);
        self.back.accumulate(&other.back);
        self.start.accumulate(&other.start);
-        self.movement_digital_up.accumulate(&other.movement_digital_up);
-        self.movement_digital_down.accumulate(&other.movement_digital_down);
-        self.movement_digital_left.accumulate(&other.movement_digital_left);
-        self.movement_digital_right.accumulate(&other.movement_digital_right);
+        self.movement_digital_up
+            .accumulate(&other.movement_digital_up);
+        self.movement_digital_down
+            .accumulate(&other.movement_digital_down);
+        self.movement_digital_left
+            .accumulate(&other.movement_digital_left);
+        self.movement_digital_right
+            .accumulate(&other.movement_digital_right);
        self.movement = self.movement.clamp_length_max(1.0);
    }
 }
@@ -247,9 +251,12 @@ pub fn sample_menu_inputs(
    state
        .inputs
        .push((LocalInputSource::Keyboard, keyboard_input(&key, &map)));
-    
+
    let mut prev_joystick_states: Vec<(LocalInputSource, MenuJoystickState)> = vec![];
-    std::mem::swap(&mut prev_joystick_states, &mut state.prev_frame_joystick_state);
+    std::mem::swap(
+        &mut prev_joystick_states,
+        &mut state.prev_frame_joystick_state,
+    );

    for (entity, pad) in pads.iter() {
        let local_source = LocalInputSource::Gamepad(entity);
@@ -1,11 +1,8 @@
-use bevy::{
-    prelude::*, text::FontSourceTemplate,
-    ui::auto_directional_navigation::AutoDirectionalNavigation,
-};
+use bevy::{prelude::*, text::FontSourceTemplate};

 use crate::{
    AppState,
-    menus::{MenuMarker, button::menu_button, navigation::NavigationDefaultFocus},
+    menus::{button::menu_button, navigation::NavigationDefaultFocus},
 };

 #[derive(SceneComponent, Default, Clone)]
@@ -58,4 +55,4 @@ impl MainMenu {
    }
 }

-pub fn setup_main_menu(mut commands: Commands) {}
+pub fn setup_main_menu(_commands: Commands) {}
@@ -1,37 +1,105 @@
 use bevy::prelude::*;
 use thiserror::Error;

-use crate::fighter::FighterId;
+use crate::{
+    fighter::FighterId,
+    match_loading::{MatchConfig, MatchPlayer, MatchRules},
+    stage::manifest::StageId,
+};

 pub struct MenuMatchPlayerSlot {
    pub slot: usize,
-    pub fighter: Option<FighterId>
+    pub fighter: Option<FighterId>,
 }

 #[derive(Resource, Default)]
 pub struct MenuMatchConfig {
-    pub players: Vec<MenuMatchPlayerSlot>
+    pub stage: Option<StageId>,
+    pub players: Vec<MenuMatchPlayerSlot>,
 }

 #[derive(Error, Debug, Reflect)]
 pub enum MenuMatchConfigErrors {
    #[error("Fighter slot {0} was invalid!")]
-    PlayerSlotInvalid(usize)
+    PlayerSlotInvalid(usize),
+    #[error("Invalid configuration: Slot {0} doesn't have a fighter selected")]
+    FighterNotSelectedForSlot(usize),
+    #[error("Invalid configuration: No stage selected")]
+    StageNotSelected,
 }

 impl MenuMatchConfig {
-    pub fn set_player_fighter(&mut self, player_slot: usize, fighter_id: Option<FighterId>) -> Result<(), MenuMatchConfigErrors> {
-        let slot = self.players.get_mut(player_slot).ok_or(MenuMatchConfigErrors::PlayerSlotInvalid(player_slot))?;
+    pub fn set_player_fighter(
+        &mut self,
+        player_slot: usize,
+        fighter_id: Option<FighterId>,
+    ) -> Result<(), MenuMatchConfigErrors> {
+        let slot = self
+            .players
+            .get_mut(player_slot)
+            .ok_or(MenuMatchConfigErrors::PlayerSlotInvalid(player_slot))?;
        slot.fighter = fighter_id;
        Ok(())
    }
-    pub fn get_player_fighter(&self, player_slot: usize) -> Result<Option<FighterId>, MenuMatchConfigErrors> {
-        let slot = self.players.get(player_slot).ok_or(MenuMatchConfigErrors::PlayerSlotInvalid(player_slot))?;
+    pub fn get_player_fighter(
+        &self,
+        player_slot: usize,
+    ) -> Result<Option<FighterId>, MenuMatchConfigErrors> {
+        let slot = self
+            .players
+            .get(player_slot)
+            .ok_or(MenuMatchConfigErrors::PlayerSlotInvalid(player_slot))?;
        Ok(slot.fighter)
    }

    pub fn all_players_ready(&self) -> bool {
-        let has_unselected_fighter = self.players.iter().any(|player_slot| player_slot.fighter.is_none());
+        let has_unselected_fighter = self
+            .players
+            .iter()
+            .any(|player_slot| player_slot.fighter.is_none());
        !has_unselected_fighter
    }
-}
+
+    pub fn to_match_config(&self) -> Result<MatchConfig, MenuMatchConfigErrors> {
+        let mut match_players = vec![];
+
+        let stage = self.stage.ok_or(MenuMatchConfigErrors::StageNotSelected)?;
+
+        for player in self.players.iter() {
+            let fighter_id =
+                player
+                    .fighter
+                    .ok_or(MenuMatchConfigErrors::FighterNotSelectedForSlot(
+                        player.slot,
+                    ))?;
+            match_players.push(MatchPlayer {
+                fighter: fighter_id,
+                handle: player.slot,
+            });
+        }
+
+        Ok(MatchConfig {
+            players: match_players,
+            stage,
+            rules: MatchRules::default(),
+        })
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn menu_config_uses_default_match_rules() {
+        let menu = MenuMatchConfig {
+            stage: Some(StageId::TestStage),
+            players: vec![MenuMatchPlayerSlot {
+                slot: 0,
+                fighter: Some(FighterId::TestFighter),
+            }],
+        };
+
+        assert_eq!(menu.to_match_config().unwrap().rules, MatchRules::default());
+    }
+}
@@ -6,32 +6,31 @@ use bevy::{
    prelude::*,
 };

-use bevy::prelude::*;
-use ron_asset_manager::RonAssetPlugin;
-
 use crate::{
    AppState,
    game_settings::CommonAssets,
-    menus::{character_select::CharacterSelectScreen, main_menu::MainMenu, style::FGUiStyle},
+    menus::{character_select::CharacterSelectScreen, main_menu::MainMenu},
 };
 pub mod button;
 pub mod character_select;
 pub mod cursor;
+pub mod errors;
 pub mod input;
 pub mod main_menu;
+pub mod match_config;
 pub mod navigation;
 pub mod scaling;
-pub mod style;
-pub mod match_config;
-pub mod errors;
 pub mod stage_select;
+pub mod style;

 #[derive(Component, Clone, Default)]
 pub struct MenuMarker {}
+#[derive(Component, Clone, Default)]
+pub struct MenuCameraMarker {}

 pub struct MenuPlugin;

-pub fn build_menu_scene<S>(existing_menu: Option<Single<Entity, With<MenuMarker>>>) -> impl Scene
+pub fn build_menu_scene<S>(_existing_menu: Option<Single<Entity, With<MenuMarker>>>) -> impl Scene
 where
    S: SceneComponent + Default + Clone + Send + Sync,
 {
@@ -41,6 +40,7 @@ pub fn wrap_menu(menu: impl Scene) -> impl Scene {
    bsn! {
        #MenuRoot
        MenuMarker
+        Transform
        Node {
            width: percent(100),
            height: percent(100),
@@ -49,6 +49,12 @@ pub fn wrap_menu(menu: impl Scene) -> impl Scene {
            flex_direction: FlexDirection::Column,
        }
        Children [
+            (
+                #MenuCamera
+                Camera
+                Camera2d
+                MenuCameraMarker
+            ),
            (
                #MenuContainer
                Node {
@@ -66,6 +72,18 @@ pub fn wrap_menu(menu: impl Scene) -> impl Scene {
    }
 }

+pub fn despawn_menu(
+    existing_menu: Option<Single<Entity, With<MenuMarker>>>,
+    mut commands: Commands,
+) {
+    if let Some(entity) = existing_menu {
+        commands
+            .entity(entity.into_inner())
+            .despawn();
+    }
+
+}
+
 pub fn spawn_menu(
    existing_menu: Option<Single<Entity, With<MenuMarker>>>,
    mut commands: Commands,
@@ -74,8 +92,6 @@ pub fn spawn_menu(
    if let Some(entity) = existing_menu {
        commands
            .entity(entity.into_inner())
-            .remove::<Camera2d>()
-            .remove::<Camera>()
            .despawn();
    }
    commands.queue_spawn_scene(wrap_menu(menu));
@@ -88,10 +104,8 @@ where
    S::scene(props)
 }

-pub fn build_menu<S>(
-    existing_menu: Option<Single<Entity, With<MenuMarker>>>,
-    mut commands: Commands,
-) where
+pub fn build_menu<S>(existing_menu: Option<Single<Entity, With<MenuMarker>>>, commands: Commands)
+where
    S: SceneComponent + Default + Clone + Send + Sync,
 {
    spawn_menu(
@@ -105,21 +119,9 @@ impl Plugin for MenuPlugin {
    fn build(&self, app: &mut App) {
        app.add_systems(
            OnEnter(AppState::MainMenu),
-            (build_menu::<MainMenu>, |mut commands: Commands| {
-                commands.spawn((Camera2d, IsDefaultUiCamera));
-                commands.spawn((
-                    Camera2d,
-                    Camera {
-                        order: 1,
-                        ..default()
-                    },
-                ));
-            }),
-        )
-        .add_systems(
-            OnEnter(AppState::CharacterSelect),
-            character_select::setup_character_select,
+            build_menu::<MainMenu>,
        )
+        .add_message::<character_select::PlayerSlotAssigned>()
        .init_resource::<navigation::UINavigationActionState>()
        .init_resource::<navigation::UINavigationRepeat>()
        .init_resource::<input::MenuInputState>()
@@ -150,36 +152,71 @@ impl Plugin for MenuPlugin {
                .run_if(resource_exists::<CommonAssets>),
        )
        .add_systems(Startup, scaling::ui_update_scale_on_startup)
+        // CURSOR
+        .add_systems(
+            PreUpdate,
+            (cursor::cursor_input).before(bevy::picking::PickingSystems::ProcessInput),
+        )
+        .add_systems(
+            Update,
+            (cursor::copy_mouse_input, cursor::update_cursor_transform),
+        )
        .add_systems(
            PreUpdate,
            input::sample_menu_inputs
                .before(cursor::cursor_input)
                .run_if(resource_exists::<crate::input::MenuInputMap>),
        )
+        //---------
+        // CHARACTER SELECT START
+        //---------
        .add_systems(
-            PreUpdate,
-            cursor::cursor_input
-                .before(bevy::picking::PickingSystems::ProcessInput)
+            OnEnter(AppState::CharacterSelect),
+            character_select::setup_character_select,
+        )
+        .add_systems(
+            PostUpdate,
+            character_select::copy_cursor_transform_to_token
                .run_if(in_state(AppState::CharacterSelect))
                .run_if(any_with_component::<CharacterSelectScreen>),
        )
        .add_systems(
-            PostUpdate,
+            PreUpdate,
            (
                character_select::css_auto_assign_slots,
-                cursor::copy_mouse_input,
-                cursor::update_cursor_transform,
-                character_select::copy_cursor_transform_to_token,
+                character_select::handle_fighter_slot_addition,
            )
                .chain()
                .run_if(in_state(AppState::CharacterSelect))
                .run_if(any_with_component::<CharacterSelectScreen>),
        )
-        .add_systems(OnExit(AppState::CharacterSelect), cursor::despawn_cursors)
-        .add_observer(character_select::handle_fighter_slot_addition)
+        .add_systems(
+            OnExit(AppState::CharacterSelect),
+            (cursor::despawn_cursors, character_select::despawn_tokens),
+        )
        .add_observer(character_select::select_fighter.run_if(in_state(AppState::CharacterSelect)))
-        .add_observer(character_select::update_start_banner_visibility.run_if(in_state(AppState::CharacterSelect)))
-        .add_plugins(RonAssetPlugin::<FGUiStyle>::create("stylesheet.ron"))
+        .add_observer(
+            character_select::update_start_banner_visibility
+                .run_if(in_state(AppState::CharacterSelect)),
+        )
+        //---------
+        // CHARACTER SELECT END
+        //---------
+        //---------
+        // STAGE SELECT START
+        //---------
+        .add_systems(
+            OnEnter(AppState::StageSelect),
+            stage_select::setup_stage_select,
+        )
+        .add_observer(stage_select::stage_selected.run_if(in_state(AppState::StageSelect)))
+        .add_systems(
+            OnExit(AppState::StageSelect),
+            (cursor::despawn_cursors, despawn_menu),
+        )
+        //---------
+        // STAGE SELECT END
+        //---------
        .add_systems(
            Update,
            (
@@ -10,7 +10,6 @@ use bevy::{
    prelude::*,
    ui::auto_directional_navigation::AutoDirectionalNavigator,
 };
-use bevy_egui::egui::IntoAtoms;
 use std::collections::HashSet;

 // Action state and input handling
@@ -48,7 +47,7 @@ pub fn process_inputs(
    action_state.pressed_actions.clear();
    let input = menu_inputs.aggregate();
    let has_direction = input.movement.length() != 0.0;
-    
+
    let mut dir_distances = [
        (input.movement_digital_up, input.movement.dot(Vec2::Y)),
        (input.movement_digital_down, input.movement.dot(Vec2::NEG_Y)),
@@ -82,12 +81,32 @@ pub fn process_inputs(
        false
    };
    if curr_dir.is_just_pressed() || repeat_press {
-        if input.movement.y > 0.0 { action_state.pressed_actions.insert(DirectionalNavigationAction::Up); }
-        if input.movement.y < 0.0 { action_state.pressed_actions.insert(DirectionalNavigationAction::Down); }
-        if input.movement.x < 0.0 { action_state.pressed_actions.insert(DirectionalNavigationAction::Left); }
-        if input.movement.x > 0.0 { action_state.pressed_actions.insert(DirectionalNavigationAction::Right); }
+        if input.movement.y > 0.0 {
+            action_state
+                .pressed_actions
+                .insert(DirectionalNavigationAction::Up);
+        }
+        if input.movement.y < 0.0 {
+            action_state
+                .pressed_actions
+                .insert(DirectionalNavigationAction::Down);
+        }
+        if input.movement.x < 0.0 {
+            action_state
+                .pressed_actions
+                .insert(DirectionalNavigationAction::Left);
+        }
+        if input.movement.x > 0.0 {
+            action_state
+                .pressed_actions
+                .insert(DirectionalNavigationAction::Right);
+        }
+    }
+    if input.accept.is_pressed() {
+        action_state
+            .pressed_actions
+            .insert(DirectionalNavigationAction::Select);
    }
-    if input.accept.is_pressed() { action_state.pressed_actions.insert(DirectionalNavigationAction::Select); }
 }

 const FOCUSED_BORDER: Srgba = bevy::color::palettes::tailwind::BLUE_50;
@@ -1,5 +1,3 @@
-use bevy::camera::CameraProjection;
-use bevy::camera::Projection::Orthographic;
 use bevy::prelude::*;
 use bevy::window::WindowResized;

@@ -30,8 +28,15 @@ pub fn ui_scaling_system(
    }
 }

-pub fn world_to_ui_position(pos: Vec2, camera: &Camera, camera_transform: &GlobalTransform, ui_scale: &UiScale) -> Vec2 {
-    let viewport_position = camera.world_to_viewport(camera_transform, Vec3::new(pos.x, pos.y, 0.0)).unwrap();
+pub fn world_to_ui_position(
+    pos: Vec2,
+    camera: &Camera,
+    camera_transform: &GlobalTransform,
+    ui_scale: &UiScale,
+) -> Vec2 {
+    let viewport_position = camera
+        .world_to_viewport(camera_transform, Vec3::new(pos.x, pos.y, 0.0))
+        .unwrap();

    let viewport_rect = camera.logical_viewport_rect().unwrap();

@@ -46,4 +51,4 @@ pub fn logical_to_ui_position(pos: Vec2, camera: &Camera, ui_scale: &UiScale) ->
    let ui_position = (pos - viewport_rect.min) / ui_scale.0;

    ui_position
-}
+}
@@ -0,0 +1,84 @@
+use bevy::prelude::*;
+
+use crate::{
+    AppState,
+    game_settings::CommonAssets,
+    match_loading::initiate_match,
+    menus::{
+        MenuMarker, cursor, match_config::MenuMatchConfig, spawn_menu,
+        stage_select::stage_box::StageBox, style::FGUiStyle,
+    },
+    stage::manifest::{StageManifest, StageManifestRegistry},
+};
+
+pub mod stage_box;
+
+#[derive(Component, FromTemplate)]
+pub struct StageSelectScreen {
+    pub stage_icons_container: Entity,
+}
+
+pub fn setup_stage_select(
+    existing_menu: Option<Single<Entity, With<MenuMarker>>>,
+    mut commands: Commands,
+    manifest_registry: Res<StageManifestRegistry>,
+    manifests: Res<Assets<StageManifest>>,
+    common_assets: Res<CommonAssets>,
+    styles: Res<Assets<FGUiStyle>>,
+) {
+    let style = styles
+        .get(&common_assets.ui_style)
+        .expect("UI style should be loaded");
+
+    let stage_boxes = manifest_registry
+        .iter()
+        .map(|(_, v)| stage_box::StageBox::scene(v.clone(), &manifests))
+        .collect::<Vec<_>>();
+
+    let menu = bsn! {
+        // Characters
+        StageSelectScreen {
+            stage_icons_container: #PortraitContainer
+        }
+        Node {
+            flex_direction: FlexDirection::Column
+        }
+        Children [
+        (
+            Node {
+                flex_direction: FlexDirection::Column,
+                width: percent(100),
+                height: percent(100),
+                justify_content: JustifyContent::Center,
+                align_items: AlignItems::Center
+            }
+            Children [
+                {stage_boxes},
+            ]
+        )
+        ]
+    };
+
+    commands.spawn(cursor::FGMenuCursor::create_shared_cursor(style));
+
+    spawn_menu(existing_menu, commands, menu);
+}
+
+pub fn stage_selected(
+    ev: On<Pointer<Press>>,
+    query: Query<&StageBox>,
+    mut commands: Commands,
+    mut next_state: ResMut<NextState<AppState>>,
+    mut match_config: ResMut<MenuMatchConfig>,
+) -> Result {
+    let stage_box = query.get(ev.event_target());
+    if let Ok(stage_box) = stage_box {
+        match_config.stage = Some(stage_box.stage_id);
+        initiate_match(
+            &mut commands,
+            &mut next_state,
+            match_config.to_match_config()?,
+        );
+    }
+    Ok(())
+}
@@ -0,0 +1,56 @@
+use bevy::{picking::Pickable, prelude::*, text::FontSourceTemplate};
+
+use crate::{
+    menus::{button::FGUiButton, style::FGUiButtonType},
+    stage::manifest::{StageId, StageManifest},
+};
+
+#[derive(Component, Clone, FromTemplate)]
+pub struct StageBox {
+    pub stage_manifest: Handle<StageManifest>,
+    pub stage_id: StageId,
+}
+
+impl StageBox {
+    pub fn scene(
+        manifest_handle: Handle<StageManifest>,
+        manifests: &Res<Assets<StageManifest>>,
+    ) -> impl Scene {
+        let manifest = manifests
+            .get(&manifest_handle)
+            .expect("Stage manifest should be valid");
+        let fighter_icon = manifest.icon.handle().clone();
+        let stage_id = manifest.id;
+        bsn! {
+            Node {
+                width: px(256),
+                height: px(256),
+                flex_direction: FlexDirection::Column,
+                justify_content: JustifyContent::FlexEnd
+            }
+            ImageNode {
+                image: fighter_icon
+            }
+            FGUiButton {
+                button_type: FGUiButtonType::StageSelectIcon
+            }
+            StageBox {
+                stage_manifest: manifest_handle,
+                stage_id: stage_id
+            }
+            BackgroundColor(Color::srgb(1.0, 1.0, 1.0))
+            Children [
+                Pickable::IGNORE
+                Node {
+                    width: percent(100)
+                }
+                TextFont {
+                    font: FontSourceTemplate::Handle("fonts/roboto.ttf"),
+                    font_size: px(crate::menus::style::TEXT_SIZE),
+                }
+                TextColor(Color::srgb(0.9, 0.9, 0.9))
+                BackgroundColor(Color::srgb(0.0, 0.0, 1.0))
+            ]
+        }
+    }
+}
@@ -1,8 +1,8 @@
 use std::collections::HashMap;

 use bevy::prelude::*;
-use serde::{Deserialize, Serialize};
 use ron_asset_manager::prelude::*;
+use serde::{Deserialize, Serialize};

 use crate::texture_reference::TextureReference;

@@ -26,6 +26,7 @@ pub struct BoxShadowStyle {
 pub struct ButtonStyle {
    background_color: Color,
    border_color: Color,
+    border_radius: f32,
    text_color: Color,
    box_shadow: BoxShadowStyle,
    border_size: i32,
@@ -44,9 +45,10 @@ pub struct ButtonStyles {
 impl ButtonStyle {
    pub fn apply(&self, commands: &mut Commands, entity: Entity, node: &mut Node) {
        node.border = UiRect::all(px(self.border_size));
+        node.border_radius = BorderRadius::all(px(self.border_radius));
        commands.entity(entity).insert((
            BackgroundColor(self.background_color),
-            BorderColor::all(self.background_color),
+            BorderColor::all(self.border_color),
            BoxShadow::new(
                self.box_shadow.color,
                px(self.box_shadow.offset_px_x),
@@ -64,6 +66,7 @@ pub enum FGUiButtonType {
    MainMenu,
    CharacterSelectCharacter,
    CharacterSelectStartBanner,
+    StageSelectIcon,
 }

 #[derive(Asset, Resource, Reflect, Deserialize, RonAsset)]
@@ -77,4 +80,5 @@ pub struct FGUiStyle {
    #[dependency]
    #[reflect(ignore)]
    pub css_token: TextureReference,
+    pub player_colors: Vec<Color>,
 }
@@ -1,49 +1,234 @@
-//! Bringing up the GGRS session and reporting what it does.
+//! Bringing up GGRS sessions and reporting their connection lifecycle.
+
+use std::net::SocketAddr;

 use bevy::prelude::*;
 use bevy_ggrs::{ggrs::UdpNonBlockingSocket, prelude::*};
+use thiserror::Error;

-use crate::args::Args;
+use crate::args::{parse_socket_addr, Args};
 use crate::netcode::GGRSCfg;

+#[derive(Clone, Debug, PartialEq, Eq)]
+pub enum PlayerConnection {
+    Local,
+    Remote(SocketAddr),
+}
+
+#[derive(Clone, Debug, PartialEq, Eq, Resource)]
+pub struct SessionConfig {
+    pub local_port: u16,
+    pub players: Vec<PlayerConnection>,
+}
+
+#[derive(Debug, Error, PartialEq, Eq)]
+pub enum SessionConfigError {
+    #[error("a session must have at least one player")]
+    NoPlayers,
+    #[error("local UDP port must be nonzero")]
+    LocalPortZero,
+    #[error("invalid network player declaration `{0}`; expected HANDLE=local or HANDLE=ADDRESS")]
+    InvalidPlayerDeclaration(String),
+    #[error("network player handle {0} is outside the session player range")]
+    PlayerHandleOutOfRange(usize),
+    #[error("network player handle {0} was declared more than once")]
+    DuplicatePlayerHandle(usize),
+    #[error("network player {0} has an invalid address: {1}")]
+    InvalidRemoteAddress(usize, String),
+    #[error("at least one player must be local")]
+    NoLocalPlayers,
+    #[error("network player declarations are not supported in sync-test or replay mode")]
+    UnsupportedOfflineNetworkConfig,
+}
+
+impl SessionConfig {
+    pub fn from_args(args: &Args, player_count: usize) -> Result<Self, SessionConfigError> {
+        if player_count == 0 {
+            return Err(SessionConfigError::NoPlayers);
+        }
+        if args.local_port == 0 {
+            return Err(SessionConfigError::LocalPortZero);
+        }
+        if (args.synctest || args.play_replay.is_some()) && !args.net_players.is_empty() {
+            return Err(SessionConfigError::UnsupportedOfflineNetworkConfig);
+        }
+
+        let mut players = vec![PlayerConnection::Local; player_count];
+        for declaration in &args.net_players {
+            let Some((handle, address)) = declaration.split_once('=') else {
+                return Err(SessionConfigError::InvalidPlayerDeclaration(
+                    declaration.clone(),
+                ));
+            };
+            let handle = handle
+                .parse::<usize>()
+                .map_err(|_| SessionConfigError::InvalidPlayerDeclaration(declaration.clone()))?;
+            if handle >= player_count {
+                return Err(SessionConfigError::PlayerHandleOutOfRange(handle));
+            }
+            if !matches!(players[handle], PlayerConnection::Local)
+                || args.net_players[..]
+                    .iter()
+                    .take_while(|item| *item != declaration)
+                    .any(|item| {
+                        item.split_once('=')
+                            .and_then(|(handle, _)| handle.parse::<usize>().ok())
+                            == Some(handle)
+                    })
+            {
+                return Err(SessionConfigError::DuplicatePlayerHandle(handle));
+            }
+            players[handle] = if address == "local" {
+                PlayerConnection::Local
+            } else {
+                PlayerConnection::Remote(
+                    parse_socket_addr(address)
+                        .map_err(|error| SessionConfigError::InvalidRemoteAddress(handle, error))?,
+                )
+            };
+        }
+
+        if !players
+            .iter()
+            .any(|player| matches!(player, PlayerConnection::Local))
+        {
+            return Err(SessionConfigError::NoLocalPlayers);
+        }
+        Ok(Self {
+            local_port: args.local_port,
+            players,
+        })
+    }
+}
+
 pub fn create_session(args: &Args, player_count: usize) -> Result<Session<GGRSCfg>> {
+    let config = SessionConfig::from_args(args, player_count)
+        .map_err(|error| bevy::ecs::error::BevyError::from(error.to_string()))?;
    let mut sess_build = SessionBuilder::<GGRSCfg>::new()
        .with_num_players(player_count)?
        .with_check_distance(args.check_distance)
-        .with_input_delay(args.input_delay); // (optional) set input delay for the local player
+        .with_input_delay(args.input_delay);

-    for i in 0..player_count {
-        sess_build = sess_build.add_player(PlayerType::Local, i)?;
+    for (handle, player) in config.players.iter().enumerate() {
+        let player_type = match player {
+            PlayerConnection::Local => PlayerType::Local,
+            PlayerConnection::Remote(address) => PlayerType::Remote(*address),
+        };
+        sess_build = sess_build.add_player(player_type, handle)?;
    }

    if args.synctest {
-        println!("Start synctest!");
-        let sess = sess_build.start_synctest_session()?;
-        Ok(Session::SyncTest(sess))
+        info!("starting GGRS sync test");
+        Ok(Session::SyncTest(sess_build.start_synctest_session()?))
    } else {
-        println!("Start p2p!");
-        let socket = UdpNonBlockingSocket::bind_to_port(6969)?;
-        let sess = sess_build.start_p2p_session(socket)?;
-        Ok(Session::P2P(sess))
+        info!(
+            "starting direct UDP P2P session on port {}",
+            config.local_port
+        );
+        let socket = UdpNonBlockingSocket::bind_to_port(config.local_port)?;
+        Ok(Session::P2P(sess_build.start_p2p_session(socket)?))
    }
 }

-pub fn print_events_system(session: Option<ResMut<Session<GGRSCfg>>>) {
-    let Some(mut session) = session else {
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Default, Resource)]
+pub enum ConnectionStatus {
+    #[default]
+    Connecting,
+    Running,
+    Interrupted,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Resource)]
+pub struct MatchDisconnected {
+    pub address: SocketAddr,
+}
+
+pub fn print_events_system(
+    mut commands: Commands,
+    mut next_state: ResMut<NextState<crate::AppState>>,
+    mut status: Option<ResMut<ConnectionStatus>>,
+    session: Option<ResMut<Session<GGRSCfg>>>,
+) {
+    let (Some(mut session), Some(status)) = (session, status.as_deref_mut()) else {
        return;
    };
-    match session.as_mut() {
-        Session::P2P(s) => {
-            for event in s.events() {
-                match event {
-                    GgrsEvent::Disconnected { .. } | GgrsEvent::NetworkInterrupted { .. } => {
-                        warn!("GGRS event: {event:?}")
-                    }
-                    GgrsEvent::DesyncDetected { .. } => error!("GGRS event: {event:?}"),
-                    _ => info!("GGRS event: {event:?}"),
-                }
+    let Session::P2P(session) = session.as_mut() else {
+        return;
+    };
+    for event in session.events() {
+        match event {
+            GgrsEvent::NetworkInterrupted { addr, .. } => {
+                warn!("GGRS network interrupted: {addr}");
+                *status = ConnectionStatus::Interrupted;
            }
+            GgrsEvent::NetworkResumed { addr } => {
+                info!("GGRS network resumed: {addr}");
+                *status = ConnectionStatus::Running;
+            }
+            GgrsEvent::Disconnected { addr } => {
+                error!("GGRS peer disconnected: {addr}");
+                commands.insert_resource(MatchDisconnected { address: addr });
+                next_state.set(crate::AppState::MatchDisconnected);
+            }
+            GgrsEvent::Synchronized { .. } => {
+                info!("GGRS session synchronized");
+                *status = ConnectionStatus::Running;
+            }
+            GgrsEvent::DesyncDetected { .. } => error!("GGRS desync detected: {event:?}"),
+            _ => info!("GGRS event: {event:?}"),
        }
-        _ => {}
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use clap::Parser;
+
+    fn args(values: &[&str]) -> Args {
+        Args::try_parse_from(values).unwrap()
+    }
+
+    #[test]
+    fn defaults_to_local_players() {
+        let config = SessionConfig::from_args(&args(&["game", "--players", "2"]), 2).unwrap();
+        assert_eq!(
+            config.players,
+            [PlayerConnection::Local, PlayerConnection::Local]
+        );
+    }
+
+    #[test]
+    fn configures_remote_players_by_handle() {
+        let config = SessionConfig::from_args(
+            &args(&["game", "--players", "2", "--net-player", "1=127.0.0.1:7001"]),
+            2,
+        )
+        .unwrap();
+        assert!(matches!(config.players[0], PlayerConnection::Local));
+        assert!(matches!(config.players[1], PlayerConnection::Remote(_)));
+    }
+
+    #[test]
+    fn validates_handles_and_local_ownership() {
+        let duplicate = args(&[
+            "game",
+            "--players",
+            "2",
+            "--net-player",
+            "1=127.0.0.1:7001",
+            "--net-player",
+            "1=127.0.0.1:7002",
+        ]);
+        assert!(matches!(
+            SessionConfig::from_args(&duplicate, 2),
+            Err(SessionConfigError::DuplicatePlayerHandle(1))
+        ));
+
+        let no_local = args(&["game", "--players", "1", "--net-player", "0=127.0.0.1:7001"]);
+        assert!(matches!(
+            SessionConfig::from_args(&no_local, 1),
+            Err(SessionConfigError::NoLocalPlayers)
+        ));
    }
 }
@@ -1,16 +1,23 @@
 //! Deterministic input recording and playback.

-use std::{collections::BTreeMap, fs, path::{Path, PathBuf}};
+use std::{
+    collections::BTreeMap,
+    fs,
+    path::{Path, PathBuf},
+};

 use bevy::prelude::*;
-use bevy_ggrs::{prelude::*, PlayerInputs, RollbackFrameCount, SaveWorld};
+use bevy_ggrs::{PlayerInputs, RollbackFrameCount, SaveWorld, prelude::*};
 use clap::ValueEnum;
 use serde::{Deserialize, Serialize};

-use crate::{args::Args, input::FighterInputFrame, match_loading::{MatchPlayer, PendingMatch}, netcode::GGRSCfg, schedule::GameplaySet, AppState};
+use crate::{
+    AppState, args::Args, input::FighterInputFrame, match_loading::MatchConfig, netcode::GGRSCfg,
+    schedule::GameplaySet,
+};

 const MAGIC: &[u8; 8] = b"SPRPLY01";
-pub const REPLAY_VERSION: u32 = 1;
+pub const REPLAY_VERSION: u32 = 2;

 #[derive(Clone, Copy, Debug, Default, Eq, PartialEq, ValueEnum)]
 pub enum ReplayFormat {
@@ -23,17 +30,11 @@ pub enum ReplayFormat {
 pub struct Replay {
    pub replay_version: u32,
    pub game_version: String,
-    pub match_config: ReplayMatch,
+    pub match_config: MatchConfig,
    pub frames: Vec<ReplayFrame>,
    pub checksums: Vec<ReplayChecksum>,
 }

-#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
-pub struct ReplayMatch {
-    pub stage: crate::stage::manifest::StageId,
-    pub players: Vec<MatchPlayer>,
-}
-
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
 pub struct ReplayFrame {
    pub frame: i32,
@@ -79,7 +80,12 @@ impl Plugin for ReplayPlugin {
                    .in_set(GameplaySet::Input)
                    .before(crate::input::buffer::postprocess_input),
            )
-            .add_systems(SaveWorld, record_checksum.after(SaveWorldSystems::Checksum).before(SaveWorldSystems::Snapshot))
+            .add_systems(
+                SaveWorld,
+                record_checksum
+                    .after(SaveWorldSystems::Checksum)
+                    .before(SaveWorldSystems::Snapshot),
+            )
            .add_systems(OnExit(AppState::InMatch), finish_recording)
            .add_systems(Update, stop_recording.run_if(in_state(AppState::InMatch)))
            .add_systems(Update, finish_playback.run_if(in_state(AppState::InMatch)));
@@ -87,7 +93,8 @@ impl Plugin for ReplayPlugin {
 }

 pub fn load(path: &Path) -> Result<Replay, String> {
-    let bytes = fs::read(path).map_err(|error| format!("cannot read replay {}: {error}", path.display()))?;
+    let bytes = fs::read(path)
+        .map_err(|error| format!("cannot read replay {}: {error}", path.display()))?;
    let replay = if bytes.starts_with(MAGIC) {
        if bytes.len() < MAGIC.len() + 4 {
            return Err("replay binary header is truncated".into());
@@ -96,7 +103,8 @@ pub fn load(path: &Path) -> Result<Replay, String> {
        if version != REPLAY_VERSION {
            return Err(format!("unsupported replay version {version}"));
        }
-        bincode::deserialize(&bytes[12..]).map_err(|error| format!("invalid binary replay: {error}"))?
+        bincode::deserialize(&bytes[12..])
+            .map_err(|error| format!("invalid binary replay: {error}"))?
    } else {
        serde_json::from_slice(&bytes).map_err(|error| format!("invalid JSON replay: {error}"))?
    };
@@ -110,10 +118,14 @@ pub fn save(path: &Path, format: ReplayFormat, replay: &Replay) -> Result<(), St
        ReplayFormat::Binary => {
            let mut bytes = MAGIC.to_vec();
            bytes.extend(REPLAY_VERSION.to_le_bytes());
-            bytes.extend(bincode::serialize(replay).map_err(|error| format!("cannot encode replay: {error}"))?);
+            bytes.extend(
+                bincode::serialize(replay)
+                    .map_err(|error| format!("cannot encode replay: {error}"))?,
+            );
            bytes
        }
-        ReplayFormat::Json => serde_json::to_vec_pretty(replay).map_err(|error| format!("cannot encode replay JSON: {error}"))?,
+        ReplayFormat::Json => serde_json::to_vec_pretty(replay)
+            .map_err(|error| format!("cannot encode replay JSON: {error}"))?,
    };
    let temporary = path.with_extension("replay.tmp");
    fs::write(&temporary, bytes).map_err(|error| format!("cannot write replay: {error}"))?;
@@ -122,7 +134,10 @@ pub fn save(path: &Path, format: ReplayFormat, replay: &Replay) -> Result<(), St

 fn validate(replay: &Replay) -> Result<(), String> {
    if replay.replay_version != REPLAY_VERSION {
-        return Err(format!("unsupported replay version {}", replay.replay_version));
+        return Err(format!(
+            "unsupported replay version {}",
+            replay.replay_version
+        ));
    }
    if replay.players_are_invalid() {
        return Err("replay player handles must cover 0..player_count".into());
@@ -130,10 +145,32 @@ fn validate(replay: &Replay) -> Result<(), String> {
    if replay.frames.is_empty() {
        return Err("replay must contain at least one frame".into());
    }
-    if replay.frames.windows(2).any(|frames| frames[0].frame >= frames[1].frame) {
+    if replay
+        .frames
+        .windows(2)
+        .any(|frames| frames[0].frame >= frames[1].frame)
+    {
        return Err("replay frames must be strictly ordered".into());
    }
-    if replay.frames.iter().any(|frame| frame.inputs.len() != replay.match_config.players.len()) {
+    if replay
+        .frames
+        .windows(2)
+        .any(|frames| frames[0].frame.checked_add(1) != Some(frames[1].frame))
+    {
+        return Err("replay frames must be contiguous".into());
+    }
+    if replay
+        .checksums
+        .windows(2)
+        .any(|checksums| checksums[0].frame >= checksums[1].frame)
+    {
+        return Err("replay checksums must be strictly ordered".into());
+    }
+    if replay
+        .frames
+        .iter()
+        .any(|frame| frame.inputs.len() != replay.match_config.players.len())
+    {
        return Err("replay frame input count does not match player count".into());
    }
    Ok(())
@@ -141,31 +178,68 @@ fn validate(replay: &Replay) -> Result<(), String> {

 impl Replay {
    fn players_are_invalid(&self) -> bool {
-        let mut handles: Vec<_> = self.match_config.players.iter().map(|player| player.handle).collect();
+        let mut handles: Vec<_> = self
+            .match_config
+            .players
+            .iter()
+            .map(|player| player.handle)
+            .collect();
        handles.sort_unstable();
        handles != (0..handles.len()).collect::<Vec<_>>()
    }
+
+    fn frame(&self, frame: i32) -> Option<&ReplayFrame> {
+        let first_frame = self.frames.first()?.frame;
+        let index = frame.checked_sub(first_frame)? as usize;
+        self.frames
+            .get(index)
+            .filter(|recorded| recorded.frame == frame)
+    }
+
+    fn checksum(&self, frame: i32) -> Option<u128> {
+        self.checksums
+            .binary_search_by_key(&frame, |checksum| checksum.frame)
+            .ok()
+            .map(|index| self.checksums[index].checksum)
+    }
 }

 fn start_replay(mut commands: Commands, args: Res<Args>, loaded: Option<Res<LoadedReplay>>) {
    let mode = if let Some(replay) = loaded {
-        ReplayMode::Playback { replay: replay.0.clone(), mismatch: false }
+        ReplayMode::Playback {
+            replay: replay.0.clone(),
+            mismatch: false,
+        }
    } else if let Some(path) = args.record_replay.clone() {
-        ReplayMode::Record { path, format: args.replay_format }
+        ReplayMode::Record {
+            path,
+            format: args.replay_format,
+        }
    } else {
        return;
    };
-    commands.insert_resource(ReplayRuntime { mode, frames: BTreeMap::new(), checksums: BTreeMap::new(), finished: false });
+    commands.insert_resource(ReplayRuntime {
+        mode,
+        frames: BTreeMap::new(),
+        checksums: BTreeMap::new(),
+        finished: false,
+    });
 }

-fn replay_inputs(mut inputs: ResMut<PlayerInputs<GGRSCfg>>, frame: Res<RollbackFrameCount>, runtime: Option<ResMut<ReplayRuntime>>) {
+fn replay_inputs(
+    mut inputs: ResMut<PlayerInputs<GGRSCfg>>,
+    frame: Res<RollbackFrameCount>,
+    runtime: Option<ResMut<ReplayRuntime>>,
+) {
    let Some(mut runtime) = runtime else { return };
    match &mut runtime.mode {
        ReplayMode::Record { .. } => {
-            runtime.frames.insert(frame.0, inputs.iter().map(|(input, _)| *input).collect());
+            runtime
+                .frames
+                .insert(frame.0, inputs.iter().map(|(input, _)| *input).collect());
        }
        ReplayMode::Playback { replay, mismatch } if !*mismatch => {
-            let Some(recorded) = replay.frames.iter().find(|recorded| recorded.frame == frame.0) else {
+            let Some(recorded) = replay.frame(frame.0) else {
                error!("Replay has no input for frame {}", frame.0);
                *mismatch = true;
                return;
@@ -178,17 +252,23 @@ fn replay_inputs(mut inputs: ResMut<PlayerInputs<GGRSCfg>>, frame: Res<RollbackF
    }
 }

-fn record_checksum(frame: Res<RollbackFrameCount>, checksum: Res<Checksum>, runtime: Option<ResMut<ReplayRuntime>>) {
+fn record_checksum(
+    frame: Res<RollbackFrameCount>,
+    checksum: Res<Checksum>,
+    runtime: Option<ResMut<ReplayRuntime>>,
+) {
    let Some(mut runtime) = runtime else { return };
    if matches!(&runtime.mode, ReplayMode::Record { .. }) {
        runtime.checksums.insert(frame.0, checksum.0);
-    } else if let ReplayMode::Playback { replay, mismatch } = &mut runtime.mode {
-        if let Some(expected) = replay.checksums.iter().find(|value| value.frame == frame.0).map(|value| value.checksum) {
-            if expected != checksum.0 {
-                error!("Replay desync at frame {}: expected {:X}, got {:X}", frame.0, expected, checksum.0);
-                *mismatch = true;
-            }
-        }
+    } else if let ReplayMode::Playback { replay, mismatch } = &mut runtime.mode
+        && let Some(expected) = replay.checksum(frame.0)
+        && expected != checksum.0
+    {
+        error!(
+            "Replay desync at frame {}: expected {:X}, got {:X}",
+            frame.0, expected, checksum.0
+        );
+        *mismatch = true;
    }
 }

@@ -196,71 +276,121 @@ fn stop_recording(
    mut commands: Commands,
    stop_request: Option<Res<StopReplayRecording>>,
    runtime: Option<ResMut<ReplayRuntime>>,
-    request: Option<Res<PendingMatch>>,
+    config: Option<Res<MatchConfig>>,
 ) {
    if stop_request.is_none() {
        return;
    }
    commands.remove_resource::<StopReplayRecording>();
-    finish_recording_inner(&mut commands, runtime, request);
+    finish_recording_inner(&mut commands, runtime, config);
 }

-fn finish_recording(mut commands: Commands, runtime: Option<ResMut<ReplayRuntime>>, request: Option<Res<PendingMatch>>) {
-    finish_recording_inner(&mut commands, runtime, request);
+fn finish_recording(
+    mut commands: Commands,
+    runtime: Option<ResMut<ReplayRuntime>>,
+    config: Option<Res<MatchConfig>>,
+) {
+    finish_recording_inner(&mut commands, runtime, config);
 }

 fn finish_recording_inner(
    commands: &mut Commands,
    runtime: Option<ResMut<ReplayRuntime>>,
-    request: Option<Res<PendingMatch>>,
+    config: Option<Res<MatchConfig>>,
 ) {
    let Some(mut runtime) = runtime else { return };
-    let ReplayMode::Record { path, format } = &runtime.mode else { return };
-    if runtime.finished || runtime.frames.is_empty() { return; }
-    let Some(request) = request else { return };
+    let ReplayMode::Record { path, format } = &runtime.mode else {
+        return;
+    };
+    if runtime.finished || runtime.frames.is_empty() {
+        return;
+    }
+    let Some(config) = config else { return };
    let path = path.clone();
    let format = *format;
    let replay = Replay {
        replay_version: REPLAY_VERSION,
        game_version: env!("CARGO_PKG_VERSION").into(),
-        match_config: ReplayMatch { stage: request.stage, players: request.players.clone() },
-        frames: runtime.frames.iter().map(|(&frame, inputs)| ReplayFrame { frame, inputs: inputs.clone() }).collect(),
-        checksums: runtime.checksums.iter().map(|(&frame, &checksum)| ReplayChecksum { frame, checksum }).collect(),
+        match_config: config.as_ref().clone(),
+        frames: runtime
+            .frames
+            .iter()
+            .map(|(&frame, inputs)| ReplayFrame {
+                frame,
+                inputs: inputs.clone(),
+            })
+            .collect(),
+        checksums: runtime
+            .checksums
+            .iter()
+            .map(|(&frame, &checksum)| ReplayChecksum { frame, checksum })
+            .collect(),
    };
-    if let Err(error) = save(&path, format, &replay) { error!("Failed to save replay: {error}"); }
+    if let Err(error) = save(&path, format, &replay) {
+        error!("Failed to save replay: {error}");
+    }
    runtime.finished = true;
    commands.remove_resource::<ReplayRuntime>();
 }

-fn finish_playback(mut commands: Commands, mut next_state: ResMut<NextState<AppState>>, frame: Res<RollbackFrameCount>, runtime: Option<Res<ReplayRuntime>>) {
+fn finish_playback(
+    mut commands: Commands,
+    mut next_state: ResMut<NextState<AppState>>,
+    frame: Res<RollbackFrameCount>,
+    runtime: Option<Res<ReplayRuntime>>,
+) {
    let Some(runtime) = runtime else { return };
-    let ReplayMode::Playback { replay, mismatch } = &runtime.mode else { return };
-    if *mismatch || replay.frames.last().is_some_and(|last| frame.0 >= last.frame) {
+    let ReplayMode::Playback { replay, mismatch } = &runtime.mode else {
+        return;
+    };
+    if *mismatch
+        || replay
+            .frames
+            .last()
+            .is_some_and(|last| frame.0 >= last.frame)
+    {
        commands.remove_resource::<ReplayRuntime>();
        commands.remove_resource::<LoadedReplay>();
        commands.insert_resource(ReplayComplete);
-        next_state.set(AppState::MainMenu);
+        next_state.set(AppState::PreMainMenu);
    }
 }

 #[cfg(test)]
 mod tests {
    use super::*;
-    use crate::{fighter::FighterId, math::{int::FGi32, vec::FGVec2}, match_loading::MatchPlayer, stage::manifest::StageId};
+    use crate::{
+        fighter::FighterId,
+        match_loading::{MatchPlayer, MatchRules},
+        math::{int::FGi32, vec::FGVec2},
+        stage::manifest::StageId,
+    };

    fn sample() -> Replay {
        Replay {
            replay_version: REPLAY_VERSION,
            game_version: "test".into(),
-            match_config: ReplayMatch {
+            match_config: MatchConfig {
                stage: StageId::TestStage,
-                players: vec![MatchPlayer { handle: 0, fighter: FighterId::TestFighter }],
+                players: vec![MatchPlayer {
+                    handle: 0,
+                    fighter: FighterId::TestFighter,
+                }],
+                rules: MatchRules::Timed {
+                    time_limit_frames: 21_600,
+                },
            },
            frames: vec![ReplayFrame {
                frame: 1,
-                inputs: vec![FighterInputFrame { movement: FGVec2::new(FGi32::from_num(1), FGi32::ZERO), ..default() }],
+                inputs: vec![FighterInputFrame {
+                    movement: FGVec2::new(FGi32::from_num(1), FGi32::ZERO),
+                    ..default()
+                }],
+            }],
+            checksums: vec![ReplayChecksum {
+                frame: 1,
+                checksum: 42,
            }],
-            checksums: vec![ReplayChecksum { frame: 1, checksum: 42 }],
        }
    }

@@ -285,4 +415,52 @@ mod tests {
        replay.frames[0].inputs.clear();
        assert!(validate(&replay).is_err());
    }
+
+    #[test]
+    fn unsupported_replay_version_is_rejected() {
+        let mut replay = sample();
+        replay.replay_version = 1;
+
+        assert_eq!(
+            validate(&replay).unwrap_err(),
+            "unsupported replay version 1"
+        );
+    }
+
+    #[test]
+    fn playback_lookups_use_frame_offsets_and_support_sparse_checksums() {
+        let mut replay = sample();
+        replay.frames[0].frame = 10;
+        replay.frames.push(ReplayFrame {
+            frame: 11,
+            inputs: replay.frames[0].inputs.clone(),
+        });
+        replay.checksums.push(ReplayChecksum {
+            frame: 11,
+            checksum: 84,
+        });
+        replay.checksums[0].frame = 10;
+        validate(&replay).unwrap();
+
+        assert_eq!(replay.frame(10).unwrap().frame, 10);
+        assert_eq!(replay.frame(11).unwrap().frame, 11);
+        assert!(replay.frame(9).is_none());
+        assert_eq!(replay.checksum(10), Some(42));
+        assert_eq!(replay.checksum(11), Some(84));
+        assert_eq!(replay.checksum(12), None);
+    }
+
+    #[test]
+    fn noncontiguous_input_frames_are_rejected() {
+        let mut replay = sample();
+        replay.frames.push(ReplayFrame {
+            frame: 3,
+            inputs: replay.frames[0].inputs.clone(),
+        });
+
+        assert_eq!(
+            validate(&replay).unwrap_err(),
+            "replay frames must be contiguous"
+        );
+    }
 }
@@ -21,7 +21,10 @@ pub enum GameplaySet {
    Physics,
    /// Resolve the integrated positions against the stage.
    Collision,
+    /// Solve collision boxes
    Animation,
+    /// Resolve attacks
+    Attacks,
 }

 /// Declares the order of [`GameplaySet`] inside [`GgrsSchedule`]. Added by
@@ -37,8 +40,9 @@ impl Plugin for GameplaySchedulePlugin {
                GameplaySet::Interrupt,
                GameplaySet::StateUpdate,
                GameplaySet::Physics,
-                GameplaySet::Collision,
                GameplaySet::Animation,
+                GameplaySet::Collision,
+                GameplaySet::Attacks,
            )
                .chain(),
        );
@@ -1,5 +1,6 @@
 use bevy::prelude::*;
 use serde::{Deserialize, Serialize};
+use std::collections::HashSet;

 use crate::{fighter::attack::AttackHitbox, math::int::FGi32};

@@ -17,3 +18,19 @@ pub struct FighterAttackScript {
    pub iasa_frame: u32,
    pub wont_autocancel_window: (u32, u32),
 }
+
+impl FighterAttackScript {
+    pub fn validate(&self) -> Result<(), String> {
+        let mut ids = HashSet::with_capacity(self.hitboxes.len());
+        for hitbox in &self.hitboxes {
+            hitbox.validate()?;
+            if !ids.insert(hitbox.id) {
+                return Err(format!("duplicate hitbox id {}", hitbox.id));
+            }
+        }
+        if self.wont_autocancel_window.0 > self.wont_autocancel_window.1 {
+            return Err("autocancel window end precedes its start".into());
+        }
+        Ok(())
+    }
+}
@@ -3,7 +3,9 @@ use std::{cell::RefCell, collections::HashMap, rc::Rc};
 use rhai::EvalAltResult;

 use crate::{
-    fighter::attack::{self, AttackAngle, FighterDamage, Knockback, KnockbackType}, math::{int::FGi32, vec::FGVec2, vec3::FGVec3}, scripting::FighterAttackScript,
+    fighter::attack::{self, AttackAngle, FighterDamage, Knockback, KnockbackType},
+    math::{int::FGi32, vec::FGVec2, vec3::FGVec3},
+    scripting::FighterAttackScript,
 };

 #[derive(Debug, Default)]
@@ -15,6 +17,16 @@ struct MoveCompiler {
    cursor: u32,
 }

+fn rhai_u32(value: i64, parameter: &str) -> Result<u32, Box<EvalAltResult>> {
+    u32::try_from(value).map_err(|_| {
+        format!(
+            "{parameter} must be between 0 and {}, got {value}",
+            u32::MAX
+        )
+        .into()
+    })
+}
+
 impl MoveCompiler {
    fn frame(&mut self, new_frame: u32) -> Result<(), Box<EvalAltResult>> {
        if new_frame < self.cursor {
@@ -61,9 +73,17 @@ impl MoveCompiler {
        Ok(())
    }

-    fn set_wont_autocancel_window(&mut self, start: u32, end: u32) -> Result<(), Box<EvalAltResult>> {
+    fn set_wont_autocancel_window(
+        &mut self,
+        start: u32,
+        end: u32,
+    ) -> Result<(), Box<EvalAltResult>> {
        if end < start {
-            return Err(format!("Couldn't set won't autocancel window, end frame {} is smaller than start frame {}", end, start).into());
+            return Err(format!(
+                "Couldn't set won't autocancel window, end frame {} is smaller than start frame {}",
+                end, start
+            )
+            .into());
        }

        self.wont_autocancel_window = Some((start, end));
@@ -77,13 +97,14 @@ impl MoveCompiler {

    fn into_attack_script(mut self) -> Result<FighterAttackScript, String> {
        self.remove_all_hitboxes().map_err(|err| err.to_string())?;
-        let hitboxes = self.hitboxes.into_iter().map(|(_, hitbox)| hitbox).collect();
+        let mut hitboxes: Vec<_> = self.hitboxes.into_values().collect();
+        hitboxes.sort_unstable_by_key(|hitbox| hitbox.id);
        let iasa_frame = self.iasa_frame.unwrap_or(100000);
        let wont_autocancel_window = self.wont_autocancel_window.unwrap_or((0, 100000));
        Ok(FighterAttackScript {
            hitboxes,
            iasa_frame,
-            wont_autocancel_window
+            wont_autocancel_window,
        })
    }
 }
@@ -126,7 +147,7 @@ pub fn compile_script(text: &str) -> Result<FighterAttackScript, String> {
                "frame",
                move |frame: i64| -> Result<(), Box<EvalAltResult>> {
                    let mut b = mc.borrow_mut();
-                    b.frame(frame as u32)
+                    b.frame(rhai_u32(frame, "frame")?)
                },
            );
        }
@@ -145,10 +166,10 @@ pub fn compile_script(text: &str) -> Result<FighterAttackScript, String> {
        {
            let mc = mc.clone();
            engine.register_fn(
-                "remove_all_hitboxes",
+                "remove_hitbox",
                move |id: i64| -> Result<(), Box<EvalAltResult>> {
                    let mut b = mc.borrow_mut();
-                    b.remove_hitbox(id as u32)
+                    b.remove_hitbox(rhai_u32(id, "hitbox id")?)
                },
            );
        }
@@ -159,7 +180,10 @@ pub fn compile_script(text: &str) -> Result<FighterAttackScript, String> {
                "set_wont_autocancel_window",
                move |start: i64, end: i64| -> Result<(), Box<EvalAltResult>> {
                    let mut b = mc.borrow_mut();
-                    b.set_wont_autocancel_window(start as u32, end as u32)
+                    b.set_wont_autocancel_window(
+                        rhai_u32(start, "autocancel start")?,
+                        rhai_u32(end, "autocancel end")?,
+                    )
                },
            );
        }
@@ -168,9 +192,10 @@ pub fn compile_script(text: &str) -> Result<FighterAttackScript, String> {
            let mc = mc.clone();
            engine.register_fn(
                "set_iasa_frame",
-                move |frame: i64| {
+                move |frame: i64| -> Result<(), Box<EvalAltResult>> {
                    let mut b = mc.borrow_mut();
-                    b.set_iasa_frame(frame as u32);
+                    b.set_iasa_frame(rhai_u32(frame, "IASA frame")?);
+                    Ok(())
                },
            );
        }
@@ -180,19 +205,19 @@ pub fn compile_script(text: &str) -> Result<FighterAttackScript, String> {
            engine.register_fn(
                "hitbox",
                move |id: i64,
-                    bone: &str,
-                    damage: FighterDamage,
-                    offset: FGVec3,
-                    radius: FGi32,
-                    angle: AttackAngle,
-                    knockback_type: KnockbackType,
-                    knockback: Knockback,
-                    knockback_growth: FGi32|
-                    -> Result<(), Box<EvalAltResult>> {
+                      bone: &str,
+                      damage: FighterDamage,
+                      offset: FGVec3,
+                      radius: FGi32,
+                      angle: AttackAngle,
+                      knockback_type: KnockbackType,
+                      knockback: Knockback,
+                      knockback_growth: FGi32|
+                      -> Result<(), Box<EvalAltResult>> {
                    let mut b = mc.borrow_mut();

                    // Rhai does not have first class u32 support, so we have to do this.
-                    let id = id as u32;
+                    let id = rhai_u32(id, "hitbox id")?;

                    if b.hitboxes.contains_key(&id) {
                        return Err(format!("Hitbox with ID {} already existed!", id).into());
@@ -222,7 +247,73 @@ pub fn compile_script(text: &str) -> Result<FighterAttackScript, String> {
        engine.run(&text)
    };

-
-    result.map(|_| Rc::into_inner(mc).unwrap().into_inner().into_attack_script())
+    result
+        .map(|_| {
+            Rc::into_inner(mc)
+                .unwrap()
+                .into_inner()
+                .into_attack_script()
+        })
        .map_err(|err| err.to_string())?
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    const HITBOX: &str = "hitbox(0, \"hand_l\", damage(\"1\"), vec3(\"0\", \"0\", \"0\"), fg32(\"1\"), angle(fg32(\"0\")), knockback_normal(), knockback(\"1\"), fg32(\"1\"));";
+
+    #[test]
+    fn compiled_hitboxes_are_sorted_by_authored_id() {
+        let script = compile_script(
+            r#"
+                frame(1);
+                hitbox(20, "hand_l", damage("1"), vec3("0", "0", "0"), fg32("1"), angle(fg32("0")), knockback_normal(), knockback("1"), fg32("1"));
+                frame(2);
+                hitbox(3, "hand_l", damage("2"), vec3("0", "0", "0"), fg32("1"), angle(fg32("0")), knockback_normal(), knockback("1"), fg32("1"));
+                frame(3);
+                hitbox(10, "hand_l", damage("3"), vec3("0", "0", "0"), fg32("1"), angle(fg32("0")), knockback_normal(), knockback("1"), fg32("1"));
+                frame(4);
+            "#,
+        )
+        .unwrap();
+
+        assert_eq!(
+            script
+                .hitboxes
+                .iter()
+                .map(|hitbox| hitbox.id)
+                .collect::<Vec<_>>(),
+            vec![3, 10, 20]
+        );
+        assert_eq!(
+            script
+                .hitboxes
+                .iter()
+                .map(|hitbox| hitbox.start_frame)
+                .collect::<Vec<_>>(),
+            vec![2, 3, 1]
+        );
+    }
+
+    #[test]
+    fn negative_and_overflowing_frames_are_rejected() {
+        for source in ["frame(-1);", "frame(4294967296);"] {
+            let error = match compile_script(source) {
+                Ok(_) => panic!("invalid frame was accepted"),
+                Err(error) => error,
+            };
+            assert!(error.contains("frame"));
+        }
+    }
+
+    #[test]
+    fn remove_hitbox_ends_only_the_named_hitbox() {
+        let script =
+            compile_script(&format!("frame(1); {HITBOX} frame(2); remove_hitbox(0);")).unwrap();
+
+        assert_eq!(script.hitboxes.len(), 1);
+        assert_eq!(script.hitboxes[0].start_frame, 1);
+        assert_eq!(script.hitboxes[0].end_frame, 2);
+    }
+}
@@ -1,6 +1,5 @@
 //! Stage collision geometry.

-
 use bevy::prelude::*;
 use serde::{Deserialize, Serialize};

@@ -27,7 +26,7 @@ pub enum StagePolyType {
    Platform,
 }

-#[derive(Reflect, Hash, Debug, Clone, Copy, Default)]
+#[derive(Reflect, Hash, Debug, Clone, Copy, Default, PartialEq, Eq)]
 pub struct StageLineID {
    pub polygon: usize,
    pub segment: usize,
@@ -59,6 +58,13 @@ impl StagePoly {
            .iter()
            .enumerate()
            .filter_map(|(segment_idx, segment)| {
+                if segment
+                    .normal
+                    .dot(ray_segment.point2() - ray_segment.point1())
+                    >= crate::math::int::FGWide::ZERO
+                {
+                    return None;
+                }
                segment
                    .segment
                    .segment_intersection(&ray_segment)
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
EIREXE	46c2af8114	Implement crouching CI / build-and-test (pull_request) Successful in 1m29s Details CI / production-build (pull_request) Successful in 10m9s Details	2026-09-25 19:59:53 +02:00
EIREXE	b56b7b0421	Merge pull request 'Add shifting ECB based on bone positions (melee-like)' (#61 ) from ecb into master CI / build-and-test (push) Successful in 1m32s Details CI / production-build (push) Successful in 11m4s Details Reviewed-on: #61	2026-09-25 14:42:54 +00:00
EIREXE	84e731fbc8	Fix various runtime shenanigans CI / build-and-test (pull_request) Successful in 1m32s Details CI / production-build (pull_request) Successful in 10m22s Details	2026-09-25 16:29:11 +02:00
EIREXE	65727ed04f	Remove gizmo shenanigans	2026-09-25 16:00:21 +02:00
EIREXE	0cb81ec2e9	Add shifting ECB based on bone positions (melee-like) CI / build-and-test (pull_request) Successful in 1m33s Details CI / production-build (pull_request) Successful in 10m48s Details	2026-09-25 15:45:55 +02:00
EIREXE	d521461625	Add authoritative fighter surface state (#60 ) CI / build-and-test (push) Successful in 1m28s Details CI / production-build (push) Successful in 11m59s Details ## Summary - add a rollback-tracked `FighterSurfaceState` as the single source of truth for stage contact - move active stage line ownership out of individual grounded fighter states - update landing, airborne motion, ledge departure, hit reactions, and debug save states to maintain surface contact - add tests for contact lifecycle, connected-segment traversal, and ledge departure Reviewed-on: #60 Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-25 10:45:27 +00:00
EIREXE	3daf8f2e21	Fix GameCube poll thread shutdown and error backoff (#55 ) CI / build-and-test (push) Successful in 1m42s Details CI / production-build (push) Successful in 10m57s Details ## Summary - signal GameCube poll thread shutdown unconditionally when the snapshot is dropped - retain and join the poll thread during resource cleanup - add bounded, shutdown-aware backoff for recoverable parse and short-read errors - add unit coverage for backoff capping and shutdown-aware waits Fixes #25 Reviewed-on: #55 Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-25 08:04:35 +00:00
EIREXE	aea1cf35ff	Merge pull request 'Fix debug UI not working at all' (#59 ) from ui_fix into master CI / build-and-test (push) Successful in 1m37s Details CI / production-build (push) Successful in 10m55s Details Reviewed-on: #59	2026-09-24 20:56:45 +00:00
EIREXE	2e06cbb4b7	Fix debug UI not working at all CI / build-and-test (pull_request) Successful in 1m30s Details CI / production-build (pull_request) Successful in 10m51s Details	2026-09-24 22:29:34 +02:00
EIREXE	9a3a1383ff	Pin Blender for CI asset processing (#58 ) CI / production-build (push) Successful in 13m8s Details CI / build-and-test (push) Successful in 1m31s Details Reviewed-on: #58 Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-24 14:45:37 +00:00
EIREXE	1ba29b817b	Implement .blend asset processor (#56 ) CI / build-and-test (push) Successful in 1m51s Details CI / production-build (push) Successful in 12m11s Details Reviewed-on: #56 Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-24 10:47:19 +00:00
EIREXE	2874d496ee	Integrate lore CI (#57 ) CI / build-and-test (push) Canceled after 0s Details CI / production-build (push) Canceled after 0s Details Reviewed-on: #57 Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-24 10:30:02 +00:00
EIREXE	f7bb8cc345	Remove UI multi cam setup (#54 ) CI / build-and-test (push) Successful in 1m19s Details CI / production-build (push) Successful in 9m38s Details Reviewed-on: #54 Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-20 17:34:11 +00:00
EIREXE	85236c4e0f	Optimize rollback hot paths (#53 ) CI / build-and-test (push) Successful in 1m16s Details CI / production-build (push) Successful in 9m36s Details ## Summary Fixes #20. - Reuse fighter animation scratch and output buffers across rollback frames. - Select air-collision hits in one pass without candidate allocations or sorting. - Index contiguous replay input frames directly and binary-search checksums. - Add regression tests for buffer reuse and replay lookup/validation. Reviewed-on: #53 Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-20 12:41:13 +00:00
EIREXE	bcf1e114ef	Add script to debug fixed point numbers in lldb CI / build-and-test (push) Successful in 1m33s Details CI / production-build (push) Successful in 9m46s Details	2026-09-20 13:35:43 +02:00
EIREXE	15f07edaaf	Add stocks UI (#52 ) CI / build-and-test (push) Successful in 1m16s Details CI / production-build (push) Successful in 9m38s Details Reviewed-on: #52 Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-20 11:34:45 +00:00
EIREXE	1276562890	Rename pending match to match config and add match state (#51 ) CI / build-and-test (push) Successful in 1m17s Details CI / production-build (push) Successful in 9m37s Details Reviewed-on: #51 Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-20 11:13:15 +00:00
EIREXE	769d82573a	Build Windows executable in shared Steam depot (#50 ) CI / build-and-test (push) Successful in 1m20s Details CI / production-build (push) Successful in 9m36s Details ## Summary - install the nightly Windows MSVC target and cargo-xwin in CI - build the production Windows executable alongside Linux - package both executables and only imported_assets in one Steam depot Reviewed-on: #50 Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-19 21:40:15 +00:00
EIREXE	9ba8697d57	Include missing battlefield icon CI / build-and-test (push) Successful in 1m10s Details CI / production-build (push) Successful in 5m5s Details	2026-09-19 21:54:33 +02:00
EIREXE	7d9b6aeafc	Fix headless asset preprocessing hang (#49 ) CI / build-and-test (push) Successful in 1m9s Details CI / production-build (push) Successful in 5m23s Details ## Summary - register Bevy's image loader explicitly in the headless asset processor - use no GPU-compressed image formats because the processor has no render device - allow PNG processing tasks to complete so `ProcessorState` reaches `Finished` Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-19 19:07:39 +00:00
EIREXE	ab6aec70c5	Fix processed RON assets being ignored (#48 ) CI / build-and-test (push) Successful in 1m9s Details CI / production-build (push) Canceled after 10m37s Details ## Summary - share custom RON asset loaders between the game and asset processor - register image, font, and glTF loaders in the headless processor - prevent `game_settings.ron` and `game.stylesheet.ron` from receiving ignored processed metadata Reviewed-on: #48 Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-19 18:09:40 +00:00
EIREXE	de5d8eb030	Deploy production Linux builds to Steam (#47 ) CI / production-build (push) Successful in 5m15s Details CI / build-and-test (push) Successful in 1m8s Details ## Summary - package the production Linux binary and Bevy assets under `build/linux` - generate Steam TOTP credentials in CI - deploy app 3409670 to the Steam `master` branch using the latest commit hash as the build description - restrict packaging and deployment to pushes on `master`, excluding pull requests and manual runs Reviewed-on: #47 Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-19 17:32:04 +00:00
EIREXE	0dc5d0392d	Add production build pipeline (#46 ) CI / build-and-test (push) Successful in 1m8s Details CI / production-build (push) Successful in 4m39s Details ## Summary - split development dynamic linking from production builds - add headless processed-asset generation - add a separate production CI cache and static Bevy/Rust linkage verification - keep custom debug features enabled for production builds behind a feature gate Reviewed-on: #46 Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-19 17:04:18 +00:00
EIREXE	804e5e37e0	Implement damage UI, damage and stale moves. (#45 ) CI / build-and-test (push) Successful in 1m30s Details Reviewed-on: #45 Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-19 15:40:44 +00:00
EIREXE	7269a1cb49	Implement fast falling (#44 ) CI / build-and-test (push) Successful in 1m17s Details Reviewed-on: #44 Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-18 22:23:03 +00:00
EIREXE	9f51207f48	Implement directional influence (#43 ) CI / build-and-test (push) Successful in 1m9s Details Reviewed-on: #43 Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-18 20:43:41 +00:00
EIREXE	2b5af49e15	Implement hitstop shake (#42 ) CI / build-and-test (push) Successful in 1m22s Details Reviewed-on: #42 Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-18 11:56:53 +00:00
EIREXE	b9f1a52bbc	Specify ground to air transitions and thresholds (#41 ) CI / build-and-test (push) Successful in 1m10s Details Reviewed-on: #41 Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-17 17:57:57 +00:00
EIREXE	0977de8457	Update gc-adapter-neo to 1.1.0 (#40 ) CI / build-and-test (push) Successful in 1m7s Details Fixes #33 Reviewed-on: #40 Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-17 15:55:13 +00:00
EIREXE	e1d2253af5	Implement direct P2P session scaffolding (#39 ) CI / build-and-test (push) Successful in 1m10s Details Closes #24 Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-17 15:04:39 +00:00
EIREXE	0454ca9e8a	Split baked animation modules (#38 ) CI / build-and-test (push) Successful in 1m15s Details Fixes #19 Splits the baked animation implementation into focused fixed-transform, runtime, visual-binding, and asset-baking modules behind the existing public facade. Preserves public APIs, serialized field order, TypePath, plugin registration, schedules, and runtime behavior. Reviewed-on: #38 Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-17 14:03:09 +00:00
EIREXE	441e3d53b3	Fix Rust cache reuse for dynamic linking (#37 ) CI / build-and-test (push) Successful in 1m46s Details ## Summary - update rust-cache to v2.9.2, which preserves dynamic-linking target artifacts during cleanup - rotate the cache prefix to invalidate the broken v1 cache Reviewed-on: #37 Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-17 08:55:52 +00:00
EIREXE	ff78847512	Fix run direction not being taken into account when accelerating (Fixes #11 ) (#35 ) CI / build-and-test (push) Successful in 10m58s Details Reviewed-on: #35 Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-16 19:17:40 +00:00
EIREXE	ae8f7b5850	Deduplicate fighter state lifecycle policies (#36 ) CI / build-and-test (push) Failing after 10m51s Details Fixes #22 Extracts shared grounded collision/friction and airborne movement/landing policies while preserving state-specific behavior. Running fighters now pass `can_walk_off = true` so they can run off platform edges. Includes grounded and airborne hitstun call sites. Reviewed-on: #36 Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-16 18:30:53 +00:00
EIREXE	43ee6d8153	Make combat reaction state rollback-safe (#34 ) CI / build-and-test (push) Successful in 13m10s Details ## Summary - replace the per-fighter received-attack inbox with a typed rollback-registered pending-hit resource - split combat reaction resolution into its own attack module - remap entity references during rollback and include pending hits in debug save states Fixes #21 Reviewed-on: #34 Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-16 17:50:40 +00:00
EIREXE	352c6fcb6c	Stop using manual hashing for dash state (#31 ) CI / build-and-test (push) Successful in 11m2s Details Reviewed-on: #31 Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-15 20:21:28 +00:00
EIREXE	06d20c2d27	Fix Rust CI cache reuse (#32 ) CI / build-and-test (push) Canceled after 42s Details Reviewed-on: #32 Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-15 20:21:15 +00:00
EIREXE	b8b65e60e9	Spread state context architecture (Fixes #18 ) (#30 ) CI / build-and-test (push) Canceled after 0s Details Reviewed-on: #30 Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-15 17:59:03 +00:00
EIREXE	43a04e9491	Add debug save states (#6 ) CI / build-and-test (push) Canceled after 5m11s Details Adds a one-slot in-memory debug save state. D-pad left stores the current single-player state and D-pad right restores it. Reviewed-on: #6 Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-15 17:11:27 +00:00
EIREXE	cd9c39b70c	Add debug frame stepping (#5 ) CI / build-and-test (push) Successful in 24m23s Details Reviewed-on: #5 Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-14 20:03:47 +00:00
EIREXE	0d96a8aed8	Make warnings an error CI / build-and-test (push) Failing after 15m6s Details	2026-09-14 18:25:15 +02:00
EIREXE	cebf1148c2	Persist Rust CI cache (#4 ) CI / build-and-test (push) Successful in 11m1s Details ## Summary - Pin the nightly Rust toolchain used by CI - Cache Cargo dependencies and build artifacts between Gitea Actions runs - Share the Linux nightly cache across branches Reviewed-on: #4 Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-14 16:16:48 +00:00
EIREXE	088d594e97	Merge pull request 'Make debug menu usable with mouse and keyboard' (#2 ) from debug-menu-input into master CI / build-and-test (push) Successful in 11m29s Details Reviewed-on: #2	2026-09-14 13:32:42 +00:00
EIREXE	868df95cd4	wording fixes CI / build-and-test (pull_request) Successful in 11m31s Details	2026-09-14 15:20:07 +02:00
EIREXE	504f63be54	Add support for split .gltf and .bin files (#3 ) CI / build-and-test (push) Canceled after 15s Details Reviewed-on: #3 Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-14 13:19:29 +00:00
EIREXE	8c11a01446	Make debug menu usable with mouse and keyboard CI / build-and-test (pull_request) Successful in 11m27s Details	2026-09-14 14:33:04 +02:00
EIREXE	30477254e5	Add build and test CI (#1 ) CI / build-and-test (push) Successful in 11m30s Details Reviewed-on: #1 Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>	2026-09-14 12:02:24 +00:00
EIREXE	4861374aef	Add test fighter for CI	2026-09-14 11:38:42 +02:00
EIREXE	d3a688e768	Fix build and add some assets	2026-09-14 11:25:27 +02:00
EIREXE	376a40d38c	Updated game settings and fighter assets	2026-09-13 23:28:40 +02:00
eirexe-test	b29085f8a5	Update .gitignore	2026-09-13 23:28:09 +02:00
eirexe-test	b0b1420f48	Add mailmap	2026-09-13 23:25:52 +02:00
eirexe-test	711d0d923f	Rename package to shinespark	2026-09-13 23:06:43 +02:00
eirexe-test	4570860d64	Implement hitstun and knockback.	2026-09-13 23:01:25 +02:00
eirexe-test	811578af2f	Make dashback configurable, fix movement bugs, add double jump forward and back.	2026-09-13 01:00:15 +02:00
eirexe-test	ad105418be	Allow other controllers in debug match	2026-09-13 00:57:27 +02:00
eirexe-test	531ecc1aec	Moar fixes and optimizations	2026-09-12 17:10:20 +02:00
eirexe-test	df18ffa1a7	Fix all warnings	2026-09-12 17:01:15 +02:00
eirexe-test	50f0371b54	Improve hitbox determinisim and performance.	2026-09-12 16:48:16 +02:00
eirexe-test	6e01147125	Some other bullshit	2026-09-12 14:55:40 +02:00
eirexe-test	74a635785e	Make CSS and SSS reach a match	2026-09-11 22:01:16 +02:00
eirexe-test	f3701bd8b0	Formatting	2026-09-11 22:01:03 +02:00
				`@@ -0,0 +1 @@`
				`Álex Román (EIREXE) <eirexe123@gmail.com> <eirexe@eirteam.moe>`