Add debug save states

Reviewed-on: #5
Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>

.gitea/workflows/ci.yml

@@ -0,0 +1,51 @@
+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 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@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2
+        with:
+          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: RUSTFLAGS="-D warnings" cargo build --locked -j 4
+
+      - name: Run unit tests
+        run: cargo test --locked --lib -j 4

.gitignore

@@ -1,3 +1,12 @@
 /target
 /.jackdaw
 imported_assets
+
+# Local editor configuration
+**/.vscode/
+
+# Generated and backup assets
+*.blend1
+*_old.glb
+/replay.json
+*.replay.tmp

.mailmap

@@ -0,0 +1 @@
+Álex Román (EIREXE) <eirexe123@gmail.com> <eirexe@eirteam.moe>

Cargo.lock

@@ -24,8 +24,6 @@ version = "0.24.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d3b7f7f85a7e5f68090000ed7622545829afd484d210358702ae4cb97dd0c320"
 dependencies = [
- "enumn",
- "serde",
  "uuid",
 ]
 
@@ -133,9 +131,9 @@ 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 +143,9 @@ 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 +306,6 @@ 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 +493,26 @@ 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 +605,6 @@ dependencies = [
  "bevy_derive",
  "bevy_ecs",
  "bevy_reflect",
- "serde",
 ]
 
 [[package]]
@@ -632,7 +640,7 @@ dependencies = [
  "downcast-rs 2.0.2",
  "either",
  "petgraph",
- "ron 0.12.2",
+ "ron",
  "serde",
  "smallvec",
  "thiserror 2.0.19",
@@ -729,7 +737,7 @@ dependencies = [
  "futures-util",
  "js-sys",
  "notify-debouncer-full",
- "ron 0.12.2",
+ "ron",
  "serde",
  "stackfuture",
  "thiserror 2.0.19",
@@ -873,21 +881,6 @@ 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 +1268,7 @@ 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 +1305,6 @@ dependencies = [
  "bevy_reflect",
  "derive_more",
  "log",
- "serde",
  "smol_str",
  "thiserror 2.0.19",
 ]
@@ -1527,7 +1520,6 @@ dependencies = [
  "glam 0.32.1",
  "half",
  "hexasphere",
- "serde",
  "thiserror 2.0.19",
  "tracing",
  "wgpu-types",
@@ -2026,7 +2018,6 @@ dependencies = [
  "bevy_window",
  "derive_more",
  "parley",
- "serde",
  "smallvec",
  "swash",
  "taffy",
@@ -2181,7 +2172,7 @@ dependencies = [
  "bevy_transform",
  "bevy_utils",
  "derive_more",
- "ron 0.12.2",
+ "ron",
  "serde",
  "thiserror 2.0.19",
  "uuid",
@@ -2294,16 +2285,7 @@ dependencies = [
  "cc",
  "cfg-if",
  "constant_time_eq",
- "cpufeatures 0.3.0",
+ "cpufeatures",
-]
-
-[[package]]
-name = "block-buffer"
-version = "0.10.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3078c7629b62d3f0439517fa394996acacc5cbc91c5a20d8c658e77abd503a71"
-dependencies = [
- "generic-array",
 ]
 
 [[package]]
@@ -2471,16 +2453,6 @@ 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 +2739,11 @@ 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 +2753,9 @@ 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 +2781,6 @@ 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 +2890,6 @@ 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 +2942,6 @@ 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 +3013,6 @@ 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 +3113,6 @@ 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"
@@ -3349,6 +3271,17 @@ 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"
@@ -3533,36 +3466,6 @@ 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"
@@ -3574,22 +3477,6 @@ dependencies = [
  "rusb",
 ]
 
-[[package]]
-name = "generic-array"
-version = "0.14.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "85649ca51fd72272d7821adaf274ad91c288277713d9c18820d8499a7ff69e9a"
-dependencies = [
- "typenum",
- "version_check",
-]
-
-[[package]]
-name = "geometry-predicates"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8dba84198cf199c11b83f1cb9243eaeb70dc50b719d2835ebf34bf2481bca010"
-
 [[package]]
 name = "gethostname"
 version = "1.1.0"
@@ -3872,7 +3759,6 @@ dependencies = [
  "cfg-if",
  "crunchy",
  "num-traits",
- "serde",
  "zerocopy",
 ]
 
@@ -4249,89 +4135,6 @@ 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 +4230,6 @@ 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 +4288,6 @@ 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"
@@ -4831,12 +4594,6 @@ 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 +4612,6 @@ 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 +5355,6 @@ 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 +5387,6 @@ 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 +5544,6 @@ 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 +5651,10 @@ 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 +5675,6 @@ 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 +5684,6 @@ 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"
@@ -6219,19 +5911,6 @@ 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 +5925,29 @@ 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"
@@ -6390,6 +6092,12 @@ 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 +6150,6 @@ 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 +6159,37 @@ dependencies = [
  "lazy_static",
 ]
 
+[[package]]
+name = "shinespark"
+version = "0.1.0"
+dependencies = [
+ "arrayvec",
+ "avian3d",
+ "bevy",
+ "bevy-inspector-egui",
+ "bevy_asset_loader",
+ "bevy_egui",
+ "bevy_ggrs",
+ "bevy_wind_waker_shader",
+ "bincode",
+ "bitfields",
+ "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 +6231,6 @@ 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 +6281,6 @@ 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 +6422,6 @@ 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"
@@ -6845,15 +6553,6 @@ dependencies = [
  "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"

Cargo.toml

@@ -1,25 +1,17 @@
 [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]
 
 [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", "dynamic_linking", "free_camera", "file_watcher", "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" }
+thiserror = "2"
 avian3d = "0.7"
 arrayvec = "0.7.8"
 bevy-inspector-egui = "0.37.0"
@@ -36,12 +28,13 @@ bevy_wind_waker_shader = { git = "https://github.com/lavaeater/bevy_wind_waker_s
 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"
+ron_asset_manager = "0.9.0"
 gc-adapter-neo = { version = "1.0.0", 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."*"]

assets/fighters/test/scripts/fair.attack.rhai

@@ -1,12 +1,12 @@
-frame(3);
+frame(4);
 hitbox(0,
-    "Foot.L",
+    "hand_l",
     damage("5.0"),
     vec3("0.0", "0.0", "0.0"),
-    fg32("20.0"),
+    fg32("5.0"),
     angle_sakurai(),
     knockback_normal(),
     knockback("10.0"),
     fg32("1.0")
 );
-frame(6);
+frame(8);

assets/fighters/test/scripts/jab.attack.rhai

@@ -0,0 +1,12 @@
+frame(3);
+hitbox(0,
+    "hand_l",
+    damage("5.0"),
+    vec3("0.0", "0.0", "0.0"),
+    fg32("5.0"),
+    angle(fg32("45.0")),
+    knockback_normal(),
+    knockback("18.0"),
+    fg32("140.0")
+);
+frame(8);

assets/fighters/test/scripts/uptilt.attack.rhai

@@ -0,0 +1,13 @@
+frame(9);
+hitbox(0,
+    "hand_l",
+    damage("5.0"),
+    vec3("1.0", "0.0", "0.0"),
+    fg32("7.0"),
+    angle_sakurai(),
+    knockback_normal(),
+    knockback("10.0"),
+    fg32("1.0")
+);
+
+frame(15);

assets/fighters/test/test.fighter.ron

@@ -1,37 +1,44 @@
 (
     id: TestFighter,
-    model_path: "fighters/test/test-fighter-normal.glb",
+    model_path: "fighters/test/test_fighter.gltf",
+    model_scale: "10.0",
     baked_animation_path: "fighters/test/test.fighterbake",
+    icon: (
+        path: "fighters/test/icon.png",
+    ),
     attributes: (
         base_walk_accel: "0.1",
         stick_walk_accel: "0.16",
-        max_walk_vel: "0.7",
+        max_walk_vel: "1.0",
-        ground_friction: "0.09",
+        ground_friction: "0.1",
         dash_acceleration_duration: 13,
         dash_duration: 24,
-        base_dash_accel: "0.02",
+        base_dash_accel: "0.1",
-        stick_dash_accel: "0.065",
+        stick_dash_accel: "0.05",
-        max_dash_vel: "1.1",
+        max_dash_vel: "2.0",
-        short_hop_vertical_velocity: "1.05",
+        short_hop_vertical_velocity: "1.45",
-        full_jump_vertical_velocity: "1.6",
+        full_jump_vertical_velocity: "2.0",
-        jump_horizontal_velocity: "0.7",
+        jump_horizontal_velocity: "0.6",
-        air_jump_horizontal_velocity: "0.5",
+        air_jump_horizontal_velocity: "0.96",
         air_jump_multiplier: "1.0",
         dash_initial_velocity: "1.4",
-        terminal_velocity: "1.3",
+        terminal_velocity: "1.6",
-        gravity: "0.064",
+        gravity: "0.084",
+        weight: "100.0",
         jumpsquat_duration: 5,
         landing_iasa: 4,
         landing_duration: 30,
 
-        max_air_horizontal_velocity: "1.35",
+        max_air_horizontal_velocity: "2.5",
-        air_acceleration_base: "0.19",
+        air_drift_max: "1.0",
-        air_acceleration_stick: "0.09",
+        air_acceleration_base: "0.03",
-        air_friction: "0.05",
+        air_acceleration_stick: "0.01",
+        air_friction: "0.01",
 
         air_dodge_duration: 49,
         air_dodge_velocity: "2.790",
-        air_dodge_decay: "0.9"
+        air_dodge_decay: "0.9",
+        ecb_vertical_midpoint_offset: "0.0"
     ),
     camera: (
         vertical_origin_offset: "8.0",
@@ -42,20 +49,170 @@
         visibility_radius: "5.0",
     ),
     animations: {
-        Wait: "PlyPurin5K_Share_ACTION_Wait",
+        Wait: "Idle_Loop_Game",
-        Walk: "PlyPurin5K_Share_ACTION_WalkFast",
+        Walk: "Walk_Loop_IK_Game",
-        Run: "PlyPurin5K_Share_ACTION_Run",
+        Run: "Run_Game",
-        Dash: "PlyPurin5K_Share_ACTION_Dash",
+        Dash: "Dash_Game",
-        JumpSquat: "PlyPurin5K_Share_ACTION_Landing",
+        JumpSquat: "Jump_Squat_Game",
-        JumpForward: "PlyPurin5K_Share_ACTION_JumpF",
+        JumpForward: "Jump_Start_IK_Game",
-        JumpBack: "PlyPurin5K_Share_ACTION_JumpB",
+        JumpBack: "JumpB_Game",
-        Landing: "PlyPurin5K_Share_ACTION_Landing",
+        LandingSpecial: "SpecialLand_Game",
-        AirDodge: "PlyPurin5K_Share_ACTION_EscapeAir",
+        Landing: "Jump_Land_Game",
-        DoubleJump: "PlyPurin5K_Share_ACTION_JumpAerialF1",
+        AirDodge: "Idle_Loop_Game",
-        Fall: "PlyPurin5K_Share_ACTION_Fall",
+        DoubleJumpForward: "Jump_Start_IK_Game",
-        Turn: "PlyPurin5K_Share_ACTION_Turn",
+        DoubleJumpBack: "JumpB_Game",
+        Fall: "Fall_Loop_Game",
+        Turn: "Turn_Game",
+
+        FlinchGround: "Air_Hit_Game",
+        FlinchAir: "Air_Hit_Game",
+
+        AttackJab1: "Punch_Jab_Game",
+        AttackUpTilt: "Idle_Loop_Game",
+        AttackForwardTilt: "Idle_Loop_Game",
+        AttackDownTilt: "Idle_Loop_Game"
     },
     attack_scripts: {
-        NAir: "fighters/test/scripts/fair.attack.rhai"
+        NeutralAir: "fighters/test/scripts/fair.attack.rhai",
-    }
+        Jab: "fighters/test/scripts/jab.attack.rhai",
+        UpTilt: "fighters/test/scripts/uptilt.attack.rhai",
+        ForwardTilt: "fighters/test/scripts/uptilt.attack.rhai",
+        DownTilt: "fighters/test/scripts/uptilt.attack.rhai",
+    },
+    hurtboxes: [
+        // center one
+        (
+            bone: "spine_01",
+            offset: (x: "0.0", y: "0.0", z: "0.0"),
+            rotation: FGVec3(x: "0.0", y: "0.0", z: "0.0"),
+            half_length: "0.05",
+            radius: "0.15"
+        ),
+        (
+            bone: "spine_03",
+            offset: (x: "0.0", y: "0.0", z: "0.0"),
+            rotation: FGVec3(x: "0.0", y: "0.0", z: "0.0"),
+            half_length: "0.05",
+            radius: "0.15"
+        ),
+        (
+            bone: "Head",
+            offset: (x: "0.0", y: "0.125", z: "0.0"),
+            rotation: FGVec3(x: "0.0", y: "0.0", z: "0.0"),
+            half_length: "0.05",
+            radius: "0.1"
+        ),
+        (
+            bone: "thigh_r",
+            offset: (x: "0.0", y: "0.15", z: "-0.01"),
+            rotation: FGVec3(x: "0.0", y: "0.0", z: "0.0"),
+            half_length: "0.2",
+            radius: "0.07"
+        ),
+        (
+            bone: "thigh_l",
+            offset: (x: "0.0", y: "0.15", z: "-0.01"),
+            rotation: FGVec3(x: "0.0", y: "0.0", z: "0.0"),
+            half_length: "0.2",
+            radius: "0.07"
+        ),
+        (
+            bone: "calf_l",
+            offset: (x: "0.0", y: "0.15", z: "-0.0"),
+            rotation: FGVec3(x: "0.0", y: "0.0", z: "0.0"),
+            half_length: "0.2",
+            radius: "0.05"
+        ),
+        (
+            bone: "calf_r",
+            offset: (x: "0.0", y: "0.15", z: "-0.0"),
+            rotation: FGVec3(x: "0.0", y: "0.0", z: "0.0"),
+            half_length: "0.2",
+            radius: "0.05"
+        ),
+        (
+            bone: "foot_r",
+            offset: (x: "0.0", y: "0.1", z: "0.01"),
+            rotation: FGVec3(x: "-25.0", y: "0.0", z: "0.0"),
+            half_length: "0.1",
+            radius: "0.04"
+        ),
+        (
+            bone: "foot_l",
+            offset: (x: "0.0", y: "0.1", z: "0.01"),
+            rotation: FGVec3(x: "-25.0", y: "0.0", z: "0.0"),
+            half_length: "0.1",
+            radius: "0.04"
+        ),
+        (
+            bone: "upperarm_l",
+            offset: (x: "0.0", y: "0.09", z: "-0.0"),
+            rotation: FGVec3(x: "0.0", y: "0.0", z: "0.0"),
+            half_length: "0.125",
+            radius: "0.05"
+        ),
+        (
+            bone: "lowerarm_l",
+            offset: (x: "0.0", y: "0.12", z: "-0.0"),
+            rotation: FGVec3(x: "0.0", y: "0.0", z: "0.0"),
+            half_length: "0.115",
+            radius: "0.04"
+        ),
+        (
+            bone: "hand_l",
+            offset: (x: "0.0", y: "0.05", z: "-0.0"),
+            rotation: FGVec3(x: "0.0", y: "0.0", z: "0.0"),
+            half_length: "0.01",
+            radius: "0.04"
+        ),
+        (
+            bone: "upperarm_r",
+            offset: (x: "0.0", y: "0.09", z: "-0.0"),
+            rotation: FGVec3(x: "0.0", y: "0.0", z: "0.0"),
+            half_length: "0.125",
+            radius: "0.05"
+        ),
+        (
+            bone: "lowerarm_r",
+            offset: (x: "0.0", y: "0.12", z: "-0.0"),
+            rotation: FGVec3(x: "0.0", y: "0.0", z: "0.0"),
+            half_length: "0.115",
+            radius: "0.04"
+        ),
+        (
+            bone: "hand_r",
+            offset: (x: "0.0", y: "0.05", z: "-0.0"),
+            rotation: FGVec3(x: "0.0", y: "0.0", z: "0.0"),
+            half_length: "0.01",
+            radius: "0.04"
+        ),
+        /*(
+            bone: "RFootJA",
+            offset: (x: "0.0", y: "0.5", z: "0.0"),
+            rotation: FGVec3(x: "0.0", y: "0.0", z: "90.0"),
+            half_length: "0.5",
+            radius: "1.0"
+        ),
+        (
+            bone: "JOBJ_47",
+            offset: (x: "0.0", y: "0.0", z: "0.0"),
+            rotation: FGVec3(x: "0.0", y: "0.0", z: "90.0"),
+            half_length: "0.5",
+            radius: "1.0"
+        ),
+        (
+            bone: "LFootJA",
+            offset: (x: "0.0", y: "0.5", z: "0.0"),
+            rotation: FGVec3(x: "0.0", y: "0.0", z: "90.0"),
+            half_length: "0.5",
+            radius: "1.0"
+        ),
+        (
+            bone: "JOBJ_41",
+            offset: (x: "0.0", y: "0.0", z: "0.0"),
+            rotation: FGVec3(x: "0.0", y: "0.0", z: "90.0"),
+            half_length: "0.5",
+            radius: "1.0"
+        ),*/
+    ]
 )

assets/game.stylesheet.ron

@@ -1,4 +1,19 @@
 (
+    cursor: (
+        path: "ui/textures/cursor.png",
+        sampling: Nearest
+    ),
+    css_token: (
+        path: "ui/textures/fighter_select_token.png",
+        sampling: Linear
+    ),
+    player_colors: [
+        Srgba((red: 0.780, green: 0.420, blue: 0.933, alpha: 1.000)),
+        Srgba((red: 0.843, green: 0.227, blue: 0.204, alpha: 1.000)),
+        Srgba((red: 0.333, green: 0.804, blue: 0.078, alpha: 1.000)),
+        Srgba((red: 0.075, green: 0.376, blue: 0.416, alpha: 1.000)),
+        Srgba((red: 0.682, green: 0.878, blue: 0.914, alpha: 1.000))
+    ],
     button_styles: {
         MainMenu: (
             focus_outline_width_px: 4,
@@ -24,8 +39,29 @@
             )
         ),
         CharacterSelectCharacter: (
-            focus_outline_width_px: 4,
+            focus_outline_width_px: 10,
-            focus_outline_offset_px: 2,
+            focus_outline_offset_px: 5,
+            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: (),
+                border_size: 10,
+            ),
+            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: (),
+            )
+        ),
+        CharacterSelectStartBanner: (
+            focus_outline_width_px: 10,
+            focus_outline_offset_px: 5,
             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)),
@@ -42,6 +78,51 @@
                 text_color: Srgba((red: 1.0, green: 0.0, blue: 0.0, alpha: 1.0)),
                 box_shadow: (),
             )
-        )
+        ),
+        StageSelectIcon: (
+            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: (
+                border_color: Srgba((red: 1.0, green: 1.0, blue: 0.0, alpha: 1.0)),
+                background_color: Srgba((red: 1.0, green: 0.0, blue: 0.0, alpha: 0.0)),
+                text_color: Srgba((red: 1.0, green: 0.0, blue: 0.0, alpha: 1.0)),
+                border_size: 10,
+                border_radius: 40.0,
+                box_shadow: (
+                    spread_radius: 5.0,
+                    blur_radius: 5.0,
+                    offset_px_y: 10,
+                    offset_px_x: 10,
+                    color: Srgba((red: 1.0, green: 1.0, blue: 1.0, alpha: 1.0))
+                ),
+            ),
+            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)),
+                border_radius: 40.0,
+                border_size: 10,
+                box_shadow: (
+                    spread_radius: 5.0,
+                    offset_px_y: 10,
+                    offset_px_x: 10,
+                    color: Srgba((red: 1.0, green: 1.0, blue: 1.0, alpha: 1.0))
+                ),
+            ),
+            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)),
+                border_radius: 40.0,
+                border_size: 10,
+                text_color: Srgba((red: 1.0, green: 0.0, blue: 0.0, alpha: 1.0)),
+                box_shadow: (
+                    spread_radius: 5.0,
+                    offset_px_y: 10,
+                    offset_px_x: 10,
+                    color: Srgba((red: 1.0, green: 1.0, blue: 1.0, alpha: 1.0))
+                ),
+            )
+        ),
     }
 )

assets/game_settings.ron

@@ -5,17 +5,22 @@
         smash_input_reset_axis_threshold: "0.25",
         smash_input_axis_threshold: "0.8",
         run_stick_threshold: "0.625",
-        smash_input_frame_threshold: 2,
+        smash_input_frame_threshold: 3,
-        input_buffer_size: 5
+        input_buffer_size: 3,
-    
+        turn_into_dashback_window: 2,
     ),
     fighter_common: (
         walk_speed_ease: "0.5",
         ground_max_horizontal_velocity: "3.0",
-        ground_friction_over_walk_speed_multiplier: "2.0"
+        ground_friction_over_walk_speed_multiplier: "2.0",
+        knockback_stacking_window: 2,
+        knockback_decay_per_frame: "0.051",
+        knockback_launch_velocity_multiplier: "0.03",
+        hitstun_frames_per_unit_knockback: "0.4",
+
     ),
     stage_manifest_paths: [
-        "stages/test.stage.ron"
+        "stages/battlefield/test.stage.ron"
     ],
     fighter_manifest_paths: [
         "fighters/test/test.fighter.ron"

assets/stages/battlefield/test.stage.ron

@@ -0,0 +1,139 @@
+(
+    id: TestStage,
+    model_path: "stages/battlefield/battlefield.glb#Scene0",
+    icon: (
+        path: "stages/battlefield/icon.png"
+    ),
+
+    // Battlefield
+    /*camera: (
+        left: -200.0,
+        right: 200.0,
+        bottom: -59.0,
+        top: 170.0,
+        origin: (0.0, 44.0),
+        vertical_fov_degrees: 30.0,
+        min_depth: 83.0,
+        max_depth: 1000.0,
+        subject_scale: 1.5,
+        fighter_forward_extent_scale: 1.5,
+        tracking_smoothness: 1.8,
+        vertical_pan_degrees: -10.0,
+        horizontal_pan_degrees_per_unit: 0.1,
+        vertical_pan_degrees_per_unit: 0.1,
+        max_horizontal_pan_degrees: 17.5,
+        max_upward_pan_degrees: 5.0,
+        max_downward_pan_degrees: 7.0,
+    ),*/
+    // Yoshi's story
+
+    /*camera: (
+        left: -180.0,
+        right: 179.0,
+        bottom: -71.0,
+        top: 169.0,
+        origin: (0.0, 44.0),
+        vertical_fov_degrees: 20.0,
+        min_depth: 100.0,
+        max_depth: 1000.0,
+        subject_scale: 1.0,
+        fighter_forward_extent_scale: 1.0,
+        tracking_smoothness: 1.0,
+        vertical_pan_degrees: -10.0,
+        horizontal_pan_degrees_per_unit: 0.05,
+        vertical_pan_degrees_per_unit: 0.15,
+        max_horizontal_pan_degrees: 17.5,
+        max_upward_pan_degrees: 5.0,
+        max_downward_pan_degrees: 7.0,
+    ),*/
+
+    camera: (
+        left: -180.0,
+        right: 179.0,
+        bottom: -71.0,
+        top: 169.0,
+        origin: (0.0, 44.0),
+        vertical_fov_degrees: 20.0,
+        min_depth: 100.0,
+        max_depth: 1000.0,
+        subject_scale: 1.5,
+        fighter_forward_extent_scale: 1.0,
+        tracking_smoothness: 1.0,
+        vertical_pan_degrees: -10.0,
+        horizontal_pan_degrees_per_unit: 0.05,
+        vertical_pan_degrees_per_unit: 0.15,
+        max_horizontal_pan_degrees: 17.5,
+        max_upward_pan_degrees: 5.0,
+        max_downward_pan_degrees: 7.0,
+    ),
+    polygons: [
+        (
+            poly_type: Platform,
+            lines: [
+                (
+                    (x: "-20.0", y: "47.0"),
+                    Floor
+                ),
+                (
+                    (x: "20.0", y: "47.0"),
+                    Floor
+                )
+            ]
+        ),
+        (
+            poly_type: Platform,
+            lines: [
+                (
+                    (x: "-65.0", y: "24.0"),
+                    Floor
+                ),
+                (
+                    (x: "-25.0", y: "24.0"),
+                    Floor
+                )
+            ]
+        ),
+        (
+            poly_type: Platform,
+            lines: [
+                (
+                    (x: "25.0", y: "24.0"),
+                    Floor
+                ),
+                (
+                    (x: "65.0", y: "24.0"),
+                    Floor
+                )
+            ]
+        ),
+        (
+            poly_type: Closed,
+            lines: [
+                (
+                    (x: "-68.0", y: "-3.0"),
+                    Wall
+                ),
+                (
+                    (x: "-68.0", y: "0.0"),
+                    Floor,
+                ),
+                (
+                    (x: "0.0", y: "0.0"),
+                    Floor
+                ),
+                (
+                    (x: "68", y: "0.0"),
+                    Wall
+                ),
+                (
+                    (x: "68.0", y: "-3.0"),
+                    Ceiling
+                ),
+                (
+                    (x: "0.0", y: "-15.0"),
+                    Ceiling
+                ),
+            ]
+        )
+    ]
+)

assets/stages/test.stage.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
-                ),
-            ]
-        )
-    ]
-)

assets/ui/textures/fighter_select_token.svg

@@ -0,0 +1,77 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   width="128"
+   height="128"
+   viewBox="0 0 33.866666 33.866666"
+   version="1.1"
+   id="svg1"
+   inkscape:version="1.4.4 (dcaf3e7d9e, 2026-05-05)"
+   sodipodi:docname="cursor.svg"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:xlink="http://www.w3.org/1999/xlink"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg">
+  <sodipodi:namedview
+     id="namedview1"
+     pagecolor="#000000"
+     bordercolor="#000000"
+     borderopacity="0.25"
+     inkscape:showpageshadow="2"
+     inkscape:pageopacity="0.0"
+     inkscape:pagecheckerboard="0"
+     inkscape:deskcolor="#d1d1d1"
+     inkscape:document-units="mm"
+     inkscape:zoom="5.6568542"
+     inkscape:cx="8.6620581"
+     inkscape:cy="67.086756"
+     inkscape:window-width="2560"
+     inkscape:window-height="1006"
+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="layer1" />
+  <defs
+     id="defs1">
+    <linearGradient
+       id="linearGradient1"
+       inkscape:collect="always">
+      <stop
+         style="stop-color:#949494;stop-opacity:1;"
+         offset="0"
+         id="stop1" />
+      <stop
+         style="stop-color:#6c6c6c;stop-opacity:1;"
+         offset="0.77473962"
+         id="stop3" />
+      <stop
+         style="stop-color:#9f9f9f;stop-opacity:1;"
+         offset="1"
+         id="stop2" />
+    </linearGradient>
+    <radialGradient
+       inkscape:collect="always"
+       xlink:href="#linearGradient1"
+       id="radialGradient2"
+       cx="16.933332"
+       cy="16.933332"
+       fx="16.933332"
+       fy="16.933332"
+       r="12.733072"
+       gradientUnits="userSpaceOnUse"
+       gradientTransform="matrix(1.2093771,0,0,1.2093771,-3.5454518,-3.5454518)" />
+  </defs>
+  <g
+     inkscape:label="Capa 1"
+     inkscape:groupmode="layer"
+     id="layer1">
+    <circle
+       style="fill:url(#radialGradient2);stroke-width:0.319981"
+       id="path1"
+       cx="16.933332"
+       cy="16.933332"
+       r="15.399086" />
+  </g>
+</svg>

rust-toolchain.toml

@@ -1,2 +1,2 @@
 [toolchain]
-channel = "nightly"
+channel = "nightly-2026-09-14"

src/args.rs

@@ -5,6 +5,8 @@ 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)]

src/debug_tools.rs

@@ -3,15 +3,18 @@
 use std::{collections::HashMap, time::Duration};
 
 use bevy::{
+    input::InputSystems,
     prelude::*,
     settings::{ReflectSettingsGroup, SaveSettingsDeferred, SettingsGroup},
 };
 use bevy_egui::{EguiContexts, EguiPrimaryContextPass, egui};
-use bevy_ggrs::RollbackFrameRate;
+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 +51,7 @@ impl PresentationMotionMode {
     }
 }
 
-#[derive(EnumCycle, Reflect)]
+#[derive(Clone, Copy, Debug, PartialEq, Eq, EnumCycle, Reflect)]
 pub enum GameSpeedDebug {
     Full,
     Half,
@@ -114,6 +117,7 @@ enum DebugFlag {
     Hurtboxes,
     Camera,
     DrawThroughGeometry,
+    FrameStepping,
 }
 
 #[derive(Clone, Copy)]
@@ -174,6 +178,10 @@ 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 +241,8 @@ 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 +263,7 @@ 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 +336,7 @@ impl DebugSettings {
             DebugFlag::Hurtboxes => self.hurtboxes,
             DebugFlag::DrawThroughGeometry => self.draw_through_geometry,
             DebugFlag::Camera => self.camera,
+            DebugFlag::FrameStepping => self.frame_stepping,
         }
     }
 
@@ -340,6 +352,7 @@ 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 +360,6 @@ 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 +369,35 @@ 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(PreUpdate, restore_frame_step_time.after(RunGgrsSystems))
             .add_systems(
                 Update,
                 (handle_palette_input, sync_gizmo_depth_bias)
@@ -391,6 +426,141 @@ 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 +572,15 @@ 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 +594,15 @@ fn handle_palette_input(
         return;
     }
 
-    let Some(controller) = settings.controller else {
+    let gamepad = if let Some(controller) = settings.controller {
-        settings.menu_open = false;
+        let Ok((_, gamepad)) = gamepads.get(controller) else {
-        return;
+            settings.menu_open = false;
-    };
+            settings.controller = None;
-    let Ok((_, gamepad)) = gamepads.get(controller) else {
+            return;
-        settings.menu_open = false;
+        };
-        settings.controller = None;
+        Some(gamepad)
-        return;
+    } else {
+        None
     };
     let player_handles = player_handles(&players);
     let page = settings.page();
@@ -432,95 +612,51 @@ 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 {
+        cycle_selected_value(&mut settings, direction, &mut commands);
-            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)));
-            }
-        }
     }
-
+    if (gamepad.is_some_and(|pad| pad.just_pressed(GamepadButton::South))
-    if matches!(page, DebugMenuPage::PlayerRows(_)) {
+        || keyboard.just_pressed(KeyCode::Enter)
-        let direction = if gamepad.just_pressed(GamepadButton::DPadLeft) {
+        || keyboard.just_pressed(KeyCode::Space))
-            Some(-1)
+        && page_len != 0
-        } else if gamepad.just_pressed(GamepadButton::DPadRight) {
+    {
-            Some(1)
+        activate_selected(&mut settings, page_len, &player_handles, &mut commands);
-        } else {
-            None
-        };
-        if let Some(direction) = direction {}
     }
-    if gamepad.just_pressed(GamepadButton::South) {
+    if (gamepad.is_some_and(|pad| pad.just_pressed(GamepadButton::West))
-        match page {
+        || keyboard.just_pressed(KeyCode::Escape))
-            DebugMenuPage::Static(entries) if page_len != 0 => match entries[settings.selected()] {
+        && !settings.pop_page()
-                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() {
         settings.menu_open = false;
         settings.controller = None;
     }
@@ -542,8 +678,9 @@ 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 +688,7 @@ 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 +697,113 @@ fn draw_palette(
             match page {
                 DebugMenuPage::Static(entries) => {
                     for (index, entry) in entries.iter().enumerate() {
-                        let marker = if index == selected { ">" } else { " " };
+                        ui.horizontal(|ui| {
-                        match entry {
+                            ui.label(if index == settings.selected() {
-                            DebugMenuEntry::StopRecording { label } => {
+                                ">"
-                                ui.label(format!("{marker} {label}"));
+                            } 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.horizontal(|ui| {
-                        ui.label(format!("{marker} Player {} >", handle + 1));
+                            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 +816,30 @@ 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.horizontal(|ui| {
-                        ui.label(format!("{marker} Row {}: {}", index + 1, row.label()));
+                            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 +929,29 @@ 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);
+    }
 }

src/debug_tools/save_state.rs

@@ -0,0 +1,196 @@
+use bevy::prelude::*;
+
+use crate::{
+    camera::MatchCamera,
+    fighter::{
+        FighterECB, FighterFacingDirection, FighterHitboxes, FighterHitstop,
+        FighterPreviousFacingDirection, FighterPreviousTranslation, FighterTranslation,
+        FighterVelocity, Grounded,
+        animation::FighterAnimationFrame,
+        attack::{
+            FighterDamage, FighterKnockbackVelocity, FighterPendingHitReaction,
+            FighterReceivedAttacks, 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,
+}
+
+#[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,
+    knockback_velocity: FighterKnockbackVelocity,
+    stale_moves: FighterStaleMoveQueue,
+    hitboxes: FighterHitboxes,
+    received_attacks: FighterReceivedAttacks,
+    solved_hurtboxes: FighterSolvedHurtboxes,
+    bone_matrices: FighterBoneMatrices,
+    grounded: bool,
+}
+
+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);
+        }
+        world.resource_mut::<DebugSaveState>().checkpoint = Some(Checkpoint {
+            fighters: checkpoint_fighters,
+            stage_collision,
+        });
+        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.knockback_velocity);
+        entity.insert(saved.stale_moves.clone());
+        entity.insert(saved.hitboxes.clone());
+        entity.insert(saved.received_attacks.clone());
+        entity.insert(saved.solved_hurtboxes.clone());
+        entity.insert(saved.bone_matrices.clone());
+        if saved.grounded {
+            entity.insert(Grounded);
+        } else {
+            entity.remove::<Grounded>();
+        }
+    }
+    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>()?,
+        knockback_velocity: *fighter.get::<FighterKnockbackVelocity>()?,
+        stale_moves: fighter.get::<FighterStaleMoveQueue>()?.clone(),
+        hitboxes: fighter.get::<FighterHitboxes>()?.clone(),
+        received_attacks: fighter.get::<FighterReceivedAttacks>()?.clone(),
+        solved_hurtboxes: fighter.get::<FighterSolvedHurtboxes>()?.clone(),
+        bone_matrices: fighter.get::<FighterBoneMatrices>()?.clone(),
+        grounded: fighter.contains::<Grounded>(),
+    })
+}
+
+pub(super) fn clear(mut save_state: ResMut<DebugSaveState>) {
+    save_state.checkpoint = None;
+}

src/fighter/animation.rs

@@ -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>) {
+pub fn advance_fighter_animation_frames(
-    for mut animation in &mut fighters {
+    mut fighters: Query<(&mut FighterAnimationFrame, &FighterHitstop)>,
-        animation.advance();
+) {
+    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,
@@ -74,12 +77,17 @@ pub enum AnimKind {
     JumpSquat,
     JumpForward,
     JumpBack,
-    DoubleJump,
+    DoubleJumpForward,
+    DoubleJumpBack,
     Landing,
+    LandingSpecial,
     AirDodge,
     Fall,
     Turn,
 
+    FlinchGround,
+    FlinchAir,
+
     // Attacks
     AttackJab1,
     AttackUpTilt,

src/fighter/attack.rs

@@ -1,27 +1,85 @@
 use std::collections::{HashMap, VecDeque};
 
 use bevy::prelude::*;
-use bevy_ggrs::prelude::GgrsSchedule;
+use bevy_ggrs::{Rollback, prelude::GgrsSchedule};
+use fixed_math::SinCos;
 use serde::{Deserialize, Serialize};
 
 use crate::{
     fighter::{
-        Fighter, FighterAttributes, FighterFacingDirection, FighterHitboxes, FighterTranslation, animation::{AnimKind, FighterAnimationFrame}, baked_animation::{FighterBoneMatrices, FixedMat4}, hurtbox::{FixedAffineCapsule, FixedCapsule}, manifest::FighterManifest,
+        Fighter, FighterAttributes, FighterFacingDirection, FighterHitboxes, FighterHitstop,
-    }, math::{
+        FighterPreviousFacingDirection, FighterPreviousTranslation, FighterRoster,
-        int::{FGi32, FGi32Ext},
+        FighterTranslation,
+        animation::{AnimKind, FighterAnimationFrame},
+        baked_animation::{FighterBoneIndexMap, FighterBoneMatrices, FixedMat4},
+        errors::FighterErrors,
+        hurtbox::{FixedAffineCapsule, FixedCapsule},
+        manifest::FighterManifest,
+    },
+    game_settings::GameSettings,
+    math::{
+        int::{FGWide, FGi32, FGi32Ext},
+        vec::FGVec2,
         vec3::FGVec3,
-    }, schedule::GameplaySet, scripting::FighterAttackScript,
+    },
+    player::Player,
+    schedule::GameplaySet,
+    scripting::FighterAttackScript,
 };
-#[derive(Debug, Default, Clone, Serialize, Deserialize)]
+
+#[derive(Deref, Component, Default, Hash, Debug, Copy, Clone)]
+pub struct FighterKnockbackVelocity(pub FGVec2);
+
+#[derive(Debug, Default, Clone, Copy, Serialize, Deserialize, Component, Hash)]
 pub struct FighterDamage(FGi32);
 
+#[derive(Debug, Hash, Clone)]
+pub enum HitReactionKind {
+    Flinch,
+    Tumble,
+}
+
+#[derive(Debug, Hash, Clone)]
+pub struct FighterHitReaction {
+    pub launch_velocity: FGVec2,
+    pub hitstop_frames: HitStop,
+    pub hitstun_frames: u32,
+    pub kind: HitReactionKind,
+}
+
+#[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(Clone, Debug, Serialize, Deserialize)]
+#[derive(Component)]
+pub struct FighterLastAttackDebug {
+    pub trajectory_points: Vec<Vec3>,
+}
+
+#[derive(Debug, Default, Clone, Deref, DerefMut, Hash)]
+pub struct HitStop(u32);
+
+impl 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)
+    }
+}
+
+#[derive(Clone, Copy, Debug, Serialize, Deserialize)]
 pub enum KnockbackType {
     Normal,
     Fixed,
@@ -44,6 +102,22 @@ 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)]
@@ -68,8 +142,9 @@ impl AttackAngle {
     }
 }
 
-#[derive(Serialize, Deserialize, Reflect, PartialEq, Eq, Hash, Clone, Debug)]
+#[derive(Serialize, Deserialize, Reflect, PartialEq, Eq, Hash, Clone, Debug, Default, Copy)]
 pub enum AttackKind {
+    #[default]
     NeutralAir,
     ForwardAir,
     BackAir,
@@ -119,14 +194,78 @@ pub struct AttackHitbox {
     pub end_frame: u32,
 }
 
-pub struct StaleMoveQueue(pub VecDeque<AttackKind>);
+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,
-        attack: AttackKind,
-
         receiver_attribs: &FighterAttributes,
         receiver_damage: FighterDamage,
         total_damage_received_this_frame: FighterDamage,
@@ -163,27 +302,36 @@ impl AttackHitbox {
             out
         };
 
-        let s = KB_GROWTH_SCALE * self.knockback_growth;
+        let kb = match self.knockback_type {
-        let p = receiver_damage.0.floor() + total_damage_received_this_frame.0;
+            KnockbackType::Fixed => FGWide::from_num(self.knockback.0),
-        let d = attack_damage_unstalled;
+            KnockbackType::Normal => {
-        let damage_term = p / DAMAGE_TERM_DIVISOR * (d + DAMAGE_BONUS);
+                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)
+            }
+        };
 
-        let scaled = damage_term * (FGi32::lit("2.0") * BASELINE_WEIGHT)
+        Knockback((FGWide::from_num(modifier) * kb).saturating_to_num())
-            / (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
+    list.clear();
-        .hitboxes
+    list.extend(
-        .iter()
+        script
-        .enumerate()
+            .hitboxes
-        .filter(|(_, hb)| hb.start_frame <= frame && hb.end_frame > frame)
+            .iter()
-        .map(|(i, _)| i)
+            .enumerate()
-        .collect()
+            .filter(|(_, hb)| hb.start_frame <= frame && hb.end_frame > frame)
+            .map(|(i, _)| i),
+    );
 }
 
 #[derive(Clone, Debug, PartialEq, Hash)]
@@ -198,59 +346,81 @@ pub struct FighterSolvedHitbox {
     pub capsule: FixedCapsule,
 }
 
-#[derive(Component, Clone, Debug, Default, Hash)]
-pub struct FighterSolvedHitboxes(pub Vec<FighterSolvedHitbox>);
-
 pub fn solve_hitboxes(
     mut query: Query<(
         &FighterBoneMatrices,
+        &FighterBoneIndexMap,
         &FighterTranslation,
+        &FighterPreviousTranslation,
         &FighterFacingDirection,
+        &FighterPreviousFacingDirection,
         &mut FighterHitboxes,
-        &FighterAnimationFrame
+        &FighterAnimationFrame,
     )>,
     attack_scripts: Res<Assets<FighterAttackScript>>,
 ) {
-    for (matrices, translation, facing_direction, mut hitboxes, animation_frame) in &mut query {
+    for (
-        hitboxes.active_hitboxes_solved.clear();
+        matrices,
-        if let Some(ref attack_script) = hitboxes.attack_script {
+        bone_indices,
-            let attack_script = attack_scripts.get(attack_script).expect("Attack script should be valid");
+        translation,
-            let fighter_trf = translation.get_3d_transform(facing_direction);
+        previous_translation,
-            let active_hitboxes = hitboxes.active_hitboxes.clone();
+        facing_direction,
-            for hitbox_idx in active_hitboxes {
+        previous_facing_direction,
-                let hitbox = attack_script.hitboxes.get(hitbox_idx).expect("Hitbox IDX should be valid");
+        mut hitboxes,
-                let matrices = matrices.get(&hitbox.bone);
+        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 let None = matrices {
+            if matrices.is_none() {
-                    warn!("Bone {} not found!", hitbox.bone);
+                warn!("Bone {} not found!", hitbox.bone);
-                    continue;
+                continue;
-                }
+            }
 
-                let (prev_bone_matrix, curr_bone_matrix) = matrices.unwrap();
+            let (prev_bone_matrix, curr_bone_matrix) = matrices.unwrap();
 
-                let curr_hbox_matrix = fighter_trf.mul(curr_bone_matrix);
+            let curr_hbox_matrix = fighter_trf.mul(curr_bone_matrix);
-                let curr_hbox_pos = curr_hbox_matrix.transform_point(hitbox.offset);
+            let curr_hbox_pos = curr_hbox_matrix.transform_point(hitbox.offset);
 
-                if hitbox.start_frame == animation_frame.frame {
+            if hitbox.start_frame == animation_frame.frame {
-                    // Sphere only
+                // Sphere only
-                    hitboxes.active_hitboxes_solved.push(
+                active_attack.solved_hitboxes.push(FighterSolvedHitbox {
-                        FixedCapsule {
+                    hitbox_idx,
-                            start: curr_hbox_pos,
+                    capsule: FixedCapsule {
-                            end: curr_hbox_pos,
+                        start: curr_hbox_pos,
-                            radius: hitbox.radius
+                        end: curr_hbox_pos,
-                        }
+                        radius: hitbox.radius,
-                    )
+                    },
-                } else {
+                })
-                    let prev_hbox_matrix = fighter_trf.mul(prev_bone_matrix);
+            } else {
-                    let prev_hbox_pos = prev_hbox_matrix.transform_point(hitbox.offset);
+                let prev_hbox_matrix = previous_fighter_trf.mul(prev_bone_matrix);
-                    hitboxes.active_hitboxes_solved.push(
+                let prev_hbox_pos = prev_hbox_matrix.transform_point(hitbox.offset);
-                        FixedCapsule {
+                active_attack.solved_hitboxes.push(FighterSolvedHitbox {
-                            start: prev_hbox_pos,
+                    hitbox_idx,
-                            end: curr_hbox_pos,
+                    capsule: FixedCapsule {
-                            radius: hitbox.radius
+                        start: prev_hbox_pos,
-                        }
+                        end: curr_hbox_pos,
-                    );
+                        radius: hitbox.radius,
-                }
+                    },
+                });
             }
         }
     }
@@ -262,9 +432,20 @@ pub struct FighterAttackScriptAssets {
 #[derive(Component, Clone, Debug, Default, Hash)]
 pub struct FighterSolvedHurtboxes(pub Vec<FighterSolvedHurtbox>);
 
+#[derive(Component, Clone, Debug, Default, Hash, DerefMut, Deref)]
+pub struct FighterReceivedAttacks(
+    pub  Vec<(
+        /* attacker */ Entity,
+        Handle<FighterAttackScript>,
+        AttackKind,
+        /* hitbox_idx */ usize,
+    )>,
+);
+
 pub fn solve_hurtboxes(
     mut query: Query<(
         &FighterBoneMatrices,
+        &FighterBoneIndexMap,
         &FighterTranslation,
         &FighterFacingDirection,
         &mut FighterSolvedHurtboxes,
@@ -272,14 +453,19 @@ pub fn solve_hurtboxes(
     )>,
     manifests: Res<Assets<FighterManifest>>,
 ) {
-    for (matrices, translation, facing_direction, mut solved_hurtboxes, fighter) in &mut query {
+    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 = matrices.get_current(&hurtbox.bone);
+            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);
@@ -303,33 +489,202 @@ pub fn solve_hurtboxes(
     }
 }
 
-pub fn intersect_attacks_with_hurtboxes(query: Query<(Entity, &FighterSolvedHurtboxes, &FighterHitboxes)>, attack_scripts: Res<Assets<FighterAttackScript>>) {
+pub fn intersect_attacks_with_hurtboxes(
-    /*for (entity_hurting, _, hitboxes) in query {
+    roster: Res<FighterRoster>,
-        if hitboxes.attack_script.is_none() {
+    mut query_attacker: Query<(
+        Entity,
+        &mut FighterHitboxes,
+        &Fighter,
+        &Player,
+        &FighterStaleMoveQueue,
+    )>,
+    mut query_attacked: Query<(
+        Entity,
+        &FighterSolvedHurtboxes,
+        &Player,
+        &Fighter,
+        &mut FighterReceivedAttacks,
+    )>,
+    attack_scripts: Res<Assets<FighterAttackScript>>,
+) {
+    for &entity_receiving in &roster.0 {
+        let Ok((_, hurtboxes, _, _receiving_fighter, mut received_attacks)) =
+            query_attacked.get_mut(entity_receiving)
+        else {
             continue;
-        }
+        };
 
-        if let Some(ref attack_script) = hitboxes.attack_script {
+        for &entity_hurting in &roster.0 {
-            let attack_script = attack_scripts.get(attack_script);
+            if entity_hurting == entity_receiving {
-
+                continue;
-            if attack_script.is_none() {
+            }
+            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_script.unwrap();
+            let attack_script = attack_scripts
+                .get(&active_attack.script)
+                .expect("Attack script should be valid");
 
-            let capsules: Vec<(&AttackHitbox, FixedCapsule)> = hitboxes.active_hitboxes.iter().map(|idx| {
+            let mut hitting_hitbox_idx = None;
-                (attack_script.hitboxes.get(*idx).unwrap(), )
+            for hurtbox in hurtboxes.0.iter() {
-            }).collect();
+                for solved_hitbox in active_attack.solved_hitboxes.iter() {
-
+                    if hurtbox.capsule.intersects(solved_hitbox.capsule) {
-            for (entity_to_hurt, hurtboxes, _) in query {
+                        let candidate = solved_hitbox.hitbox_idx;
-                // Self collisions not allowed
+                        if hitting_hitbox_idx.is_none_or(|current: usize| {
-                if entity_to_hurt == entity_hurting {
+                            attack_script.hitboxes[candidate].id
-                    continue;
+                                < attack_script.hitboxes[current].id
+                        }) {
+                            hitting_hitbox_idx = Some(candidate);
+                        }
+                    }
                 }
             }
+
+            let Some(hitting_hitbox_idx) = hitting_hitbox_idx else {
+                continue;
+            };
+
+            received_attacks.push((
+                entity_hurting,
+                active_attack.script.clone(),
+                active_attack.kind,
+                hitting_hitbox_idx,
+            ));
+            info!("Hit by hitbox {}!!!!", hitting_hitbox_idx);
+
+            active_attack.hit_fighters.push(entity_receiving);
         }
-    }*/
+    }
+}
+
+pub fn calculate_received_attacks_trajectories(
+    mut attacker: Query<(
+        &mut FighterStaleMoveQueue,
+        &FighterFacingDirection,
+        &FighterHitboxes,
+        &Player,
+        &mut FighterHitstop,
+    )>,
+    receiver: Query<(
+        &mut FighterReceivedAttacks,
+        &mut FighterDamage,
+        &Fighter,
+        &mut FighterPendingHitReaction,
+    )>,
+    attack_scripts: Res<Assets<FighterAttackScript>>,
+    game_settings: Res<GameSettings>,
+    fighter_manifests: Res<Assets<FighterManifest>>,
+) -> Result {
+    for (mut received_attacks, mut receiver_damage, fighter, mut pending_reactions) in receiver {
+        if received_attacks.is_empty() {
+            continue;
+        }
+
+        // we got attacked, time to calculate the total damage
+
+        let damage_data = received_attacks
+            .iter()
+            .filter_map(|(from_entity, attack_script, attack_kind, hitbox_idx)| {
+                let Ok((stale_move_queue, facing_dir, _hitboxes, player, _attacker_hitstop)) =
+                    attacker.get(*from_entity)
+                else {
+                    return None;
+                };
+
+                let Some(attack_script) = attack_scripts.get(attack_script) else {
+                    return None;
+                };
+
+                let hitbox = &attack_script.hitboxes[*hitbox_idx];
+
+                let damage_received =
+                    stale_move_queue.get_attack_damage_multiplier(*attack_kind) * hitbox.damage.0;
+
+                Some((
+                    from_entity,
+                    damage_received,
+                    hitbox,
+                    attack_script,
+                    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![];
+
+        for (attacker_entity, attack_damage, hitbox, _attack_script, 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
+            };
+            let (sin, cos) = launch_angle.sin_cos();
+            let launch_direction = FGVec2::new(cos, sin);
+            let hitstop = HitStop::calculate(FighterDamage(attack_damage), false);
+            reactions.push((
+                *attacker_entity,
+                attacker_slot,
+                FighterHitReaction {
+                    launch_velocity: launch_direction * knockback.get_launch_speed(&game_settings),
+                    hitstun_frames: knockback.get_hitstun_frames(&game_settings),
+                    hitstop_frames: hitstop,
+                    kind: HitReactionKind::Flinch,
+                },
+            ));
+        }
+
+        receiver_damage.0 += total_damage_received_this_frame;
+
+        for (attacker_entity, _, reaction) in reactions.iter() {
+            let Ok((.., mut hitstop)) = attacker.get_mut(*attacker_entity) else {
+                continue;
+            };
+
+            hitstop.remaining_frames = reaction.hitstop_frames.max(hitstop.remaining_frames);
+        }
+
+        // Pick attack by port priority
+        pending_reactions.0 = reactions
+            .into_iter()
+            .min_by(|(_, port_a, _), (_, port_b, _)| port_a.cmp(port_b))
+            .map(|(_, _, reaction)| reaction);
+
+        received_attacks.clear();
+    }
+
+    Ok(())
 }
 
 pub struct FighterAttackPlugin;
@@ -338,9 +693,15 @@ impl Plugin for FighterAttackPlugin {
     fn build(&self, app: &mut App) {
         app.add_systems(
             GgrsSchedule,
-            (solve_hurtboxes, solve_hitboxes).chain()
+            (
+                solve_hurtboxes,
+                solve_hitboxes,
+                intersect_attacks_with_hurtboxes,
+                calculate_received_attacks_trajectories,
+            )
+                .chain()
                 .after(crate::fighter::baked_animation::update_fighter_bone_matrices)
-                .in_set(GameplaySet::Animation),
+                .in_set(GameplaySet::Attacks),
         );
     }
 }

src/fighter/attributes.rs

@@ -32,6 +32,7 @@ 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,
@@ -45,6 +46,13 @@ 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,

src/fighter/baked_animation.rs

@@ -18,11 +18,12 @@ use bevy::{
     reflect::TypePath,
     world_serialization::{WorldInstanceReady, WorldInstanceSpawner},
 };
-use bevy_ggrs::prelude::GgrsSchedule;
+use bevy_ggrs::{GgrsFrameTiming, prelude::GgrsSchedule};
 use serde::{Deserialize, Serialize};
 
 use crate::{
     fighter::{
+        Fighter,
         animation::{AnimKind, FighterAnimationFrame},
         manifest::FighterManifest,
         visual::FighterAnimations,
@@ -115,9 +116,9 @@ impl FixedMat4 {
 
     /// 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_x, cos_x) = rotation.x.sin_cos_rads();
-        let (sin_y, cos_y) = rotation.y.sin_cos();
+        let (sin_y, cos_y) = rotation.y.sin_cos_rads();
-        let (sin_z, cos_z) = rotation.z.sin_cos();
+        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;
@@ -191,10 +192,22 @@ pub struct BakedFighterAnimations {
 }
 
 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 {
-            frame.frame % frames.len() as u32
+            // The terminal sample is retained for one-shot animations, but is
+            // the same point in time as the next loop's first sample.
+            let loop_frame_count = frames.len().saturating_sub(1).max(1) as u32;
+            frame.frame % loop_frame_count
         } else {
             frame.frame
         };
@@ -224,8 +237,15 @@ pub struct FighterBoneMatrices {
     matrices: Vec<FixedMat4>,
     previous_frame_matrices: Vec<FixedMat4>,
     local_matrices: Vec<FixedMat4>,
+    previous_local_matrices: Vec<FixedMat4>,
 }
 
+/// Immutable lookup table populated from the baked skeleton. Keeping this
+/// separate from rollback-tracked matrices avoids rebuilding string searches
+/// during every simulated frame.
+#[derive(Component, Clone, Debug, Default)]
+pub struct FighterBoneIndexMap(pub HashMap<String, usize>);
+
 #[derive(Component)]
 struct BakedFighterBone {
     fighter: Entity,
@@ -252,6 +272,17 @@ impl FighterBoneMatrices {
         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()
@@ -263,7 +294,23 @@ impl FighterBoneMatrices {
         self.local_matrices.get(index).copied()
     }
 
-    fn set_pose(&mut self, bone_names: &[String], parents: &[Option<usize>], local: &[FixedMat4]) {
+    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))
+    }
+
+    fn set_pose(
+        &mut self,
+        bone_names: &[String],
+        parents: &[Option<usize>],
+        local: &[FixedMat4],
+        model_scale: FGi32,
+    ) {
         assert_eq!(
             bone_names.len(),
             local.len(),
@@ -282,6 +329,7 @@ impl FighterBoneMatrices {
             assert_eq!(self.parents, parents, "baked bone parents changed");
         }
         std::mem::swap(&mut self.matrices, &mut self.previous_frame_matrices);
+        std::mem::swap(&mut self.local_matrices, &mut self.previous_local_matrices);
         self.local_matrices.clear();
         self.local_matrices.extend_from_slice(local);
         let mut model = vec![None; local.len()];
@@ -289,9 +337,17 @@ impl FighterBoneMatrices {
             resolve_model_transform(index, parents, local, &mut model)
                 .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 = model
             .into_iter()
-            .map(|matrix| matrix.expect("baked bone hierarchy should be valid"))
+            .map(|matrix| model_scale.mul(matrix.expect("baked bone hierarchy should be valid")))
             .collect();
     }
 }
@@ -300,18 +356,42 @@ 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, mut matrices) in &mut fighters {
+    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");
-        matrices.set_pose(&baked.bone_names, &baked.parents, pose);
+        let manifest = manifests
+            .get(&fighter.manifest)
+            .expect("fighter manifest should be loaded before the match starts");
+        matrices.set_pose(
+            &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)),
+            );
+        }
     }
 }
 
@@ -403,15 +483,30 @@ fn bind_fighter_visual_bones(
 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.local(bone.index) else {
+        let Some(local) = matrices.presentation_local(bone.index, overstep_fraction) else {
             continue;
         };
-        *transform = Transform::from_matrix(local.to_mat4());
+        *transform = local;
+    }
+}
+
+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),
     }
 }
 
@@ -423,6 +518,7 @@ struct FighterBakeDeclaration {
 #[derive(Asset, TypePath)]
 struct FighterBakeSource {
     model_bytes: Vec<u8>,
+    buffers: Vec<Vec<u8>>,
     animations: HashMap<AnimKind, String>,
 }
 
@@ -452,12 +548,35 @@ impl AssetLoader for FighterBakeSourceLoader {
         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
+        let model_bytes = load_context
-        // source dependency through it would wait for a processed GLB while
+            .read_asset_bytes(&manifest.model_path)
-        // this processor is still producing the first processed asset.
+            .await
-        let model_bytes = std::fs::read(Path::new("assets").join(&manifest.model_path))?;
+            .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,
         })
     }
@@ -506,7 +625,7 @@ impl AssetTransformer for FighterBakeTransformer {
         source: TransformedAsset<Self::AssetInput>,
         _: &'a Self::Settings,
     ) -> Result<TransformedAsset<Self::AssetOutput>, Self::Error> {
-        let baked = bake_gltf(&source.model_bytes, &source.animations)?;
+        let baked = bake_gltf(&source.model_bytes, &source.buffers, &source.animations)?;
         Ok(source.replace_asset(baked))
     }
 }
@@ -562,10 +681,43 @@ impl Plugin for BakedAnimationPlugin {
 
 fn bake_gltf(
     bytes: &[u8],
+    buffer_bytes: &[Vec<u8>],
     animations: &HashMap<AnimKind, String>,
 ) -> io::Result<BakedFighterAnimations> {
-    let (document, buffers, _) = gltf::import_slice(bytes)
+    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)
+}
+
+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(
@@ -616,10 +768,10 @@ fn bake_gltf(
             .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 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;
+            let time = (frame as f32 / BAKED_ANIMATION_FPS as f32).min(duration);
             let local = nodes
                 .iter()
                 .map(|node| local_transform(node.clone(), &channels, time))
@@ -658,6 +810,17 @@ fn bake_gltf(
     })
 }
 
+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
+}
+
 fn resolve_model_transform(
     index: usize,
     parents: &[Option<usize>],
@@ -828,19 +991,21 @@ mod tests {
     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(
+        let (document, buffers, _) = gltf::import(concat!(
-            include_bytes!("../../assets/fighters/test/test-fighter-normal.glb"),
+            env!("CARGO_MANIFEST_DIR"),
-            &manifest.animations,
+            "/assets/fighters/test/test_fighter.gltf"
-        )
+        ))
         .unwrap();
+        let baked = bake_gltf_document(document, buffers, &manifest.animations).unwrap();
 
         assert_eq!(baked.frame_rate, BAKED_ANIMATION_FPS);
-        assert!(baked.frame_count(AnimKind::Wait).unwrap() > 1);
+        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_indices[&AnimKind::JumpSquat],
-            baked.clip_indices[&AnimKind::Landing]
-        );
         assert_eq!(
             baked.clip(AnimKind::Wait).unwrap().frames[0].len(),
             baked.bone_names.len()
@@ -853,12 +1018,14 @@ mod tests {
         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]],
+                frames: vec![vec![first], vec![second], vec![terminal]],
             }],
             clip_indices: HashMap::from([(AnimKind::Wait, 0)]),
         };
@@ -870,12 +1037,48 @@ mod tests {
         };
         let finished = FighterAnimationFrame {
             kind: AnimKind::Wait,
-            frame: 3,
+            frame: 4,
             repeat: false,
         };
 
         assert_eq!(baked.sample_pose(&repeating), Some(&[second][..]));
-        assert_eq!(baked.sample_pose(&finished), 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 = interpolate_transform(previous, current, 0.25);
+
+        assert_eq!(transform.translation, Vec3::new(3.0, 0.0, 0.0));
     }
 
     #[test]
@@ -888,6 +1091,7 @@ mod tests {
             &["root".into(), "hand".into()],
             &[None, Some(0)],
             &[first, second],
+            FGi32::ONE,
         );
 
         assert_eq!(matrices.get_current("hand"), Some(second));
@@ -909,6 +1113,7 @@ mod tests {
             &["root".into(), "hand".into()],
             &[None, Some(0)],
             &[root, hand],
+            FGi32::ONE,
         );
 
         assert_eq!(matrices.local(1), Some(hand));
@@ -926,6 +1131,28 @@ mod tests {
         );
     }
 
+    #[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(
+            &["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 {

src/fighter/collision.rs

@@ -49,23 +49,27 @@ pub fn air_collide_with_stage(
 
     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 {
+            intersect_results.push((
-                line_id: {
+                AirCollisionWithStageResult {
-                    StageLineID {
+                    line_id: {
-                        polygon: poly_idx,
+                        StageLineID {
-                        segment: intersect_result.segment_idx,
+                            polygon: poly_idx,
-                    }
+                            segment: intersect_result.segment_idx,
+                        }
+                    },
+                    hit_position: intersect_result.position,
+                    hit_normal: intersect_result.normal,
                 },
-                hit_position: intersect_result.position,
+                intersect_result
-                hit_normal: intersect_result.normal,
+                    .position
-            }, intersect_result.position.distance_squared(ray_segment.point2())));
+                    .distance_squared(ray_segment.point2()),
+            ));
         }
     }
-    intersect_results.sort_by(| (_, a), (_, b) | {
+    intersect_results.sort_by(|(_, a), (_, b)| a.cmp(b));
-        a.cmp(b)
-    });
 
-    intersect_results.iter().last().map(|(val, _)| {
+    intersect_results
-        val.to_owned().clone()
+        .iter()
-    })
+        .last()
+        .map(|(val, _)| val.to_owned().clone())
 }

src/fighter/debug.rs

@@ -8,21 +8,26 @@ 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::{
+    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::vec3::FGVec3;
+use crate::math::vec::FGVec2;
 use crate::player::Player;
-use crate::scripting::FighterAttackScript;
 
 pub fn debug_draw_ecb(
     ecbs: Query<(
@@ -52,7 +57,7 @@ pub fn fighter_debug(
         &FighterVelocity,
         &FighterInput,
         &FighterAnimationFrame,
-        &StateNameDebug,
+        &FighterState,
         &FighterAnimations,
         &FighterTranslation,
         &FighterFacingDirection,
@@ -63,7 +68,7 @@ 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 +91,7 @@ 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 +99,8 @@ pub fn fighter_debug(
                             } else {
                                 ui.label(format!(
                                     "State: {:?} ({:?})",
-                                    state_name.0, animation_frame.kind
+                                    state.name(),
+                                    animation_frame.kind
                                 ));
                             }
                         }
@@ -149,14 +155,16 @@ pub fn fighter_debug(
 
 pub fn animation_debug(query: Query<(&GlobalTransform, &FighterBoneMatrices)>, mut gizmos: Gizmos) {
     for (global_transform, matrices) in query {
+        let (_, rotation, translation) = global_transform.to_scale_rotation_translation();
+        let marker_transform = Transform::from_translation(translation).with_rotation(rotation);
         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 +298,20 @@ 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 +341,20 @@ pub fn attack_debug(
         &FighterFacingDirection,
         &FighterAnimationFrame,
     )>,
-    attack_scripts: Res<Assets<FighterAttackScript>>,
     mut gizmos: Gizmos,
 ) {
-    for (hitboxes, matrices, translation, facing_direction, frame) in query {
+    for (hitboxes, _matrices, _translation, _facing_direction, _frame) in query {
-        if let Some(script) = &hitboxes.attack_script {
+        if let Some(active_attack) = &hitboxes.0 {
-            for solved_hitbox in hitboxes.active_hitboxes_solved.iter() {
+            for solved_hitbox in active_attack.solved_hitboxes.iter() {
-                let start = solved_hitbox.start.to_vec3();
+                let start = solved_hitbox.capsule.start.to_vec3();
-                let end = solved_hitbox.end.to_vec3();
+                let end = solved_hitbox.capsule.end.to_vec3();
-                let center = (solved_hitbox.start + solved_hitbox.end) * FGi32::lit("0.5");
+                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 +375,61 @@ pub fn attack_debug(
         }
     }
 }
+
+pub fn attack_debug_gather(
+    query: Query<(
+        Entity,
+        &FighterPendingHitReaction,
+        &FighterTranslation,
+        &Fighter,
+    )>,
+    mut commands: Commands,
+    manifests: Res<Assets<FighterManifest>>,
+    game_settings: Res<GameSettings>,
+) -> Result {
+    for (entity, reaction, translation, fighter) in query {
+        let Some(ref hit) = reaction.0 else {
+            commands.entity(entity).remove::<FighterLastAttackDebug>();
+            continue;
+        };
+
+        let manifest = manifests
+            .get(&fighter.manifest)
+            .ok_or(FighterErrors::FighterManifestNotFound)?;
+
+        let mut knockback_vel = FighterKnockbackVelocity(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);
+
+            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,
+        );
+    }
+}

src/fighter/errors.rs

@@ -0,0 +1,7 @@
+use bevy::reflect::Reflect;
+
+#[derive(thiserror::Error, Debug, Reflect)]
+pub enum FighterErrors {
+    #[error("Fighter manifest not found")]
+    FighterManifestNotFound,
+}

src/fighter/hurtbox.rs

@@ -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
+        // Exhaustion means the fixed-point solver could not prove an
-        // current simplex to fixed-point precision, so conservatively collide.
+        // intersection. Treating it as a hit creates phantom contacts for
-        true
+        // cycling or degenerate simplexes
+        false
     }
-
 }
 
 trait SupportMap {
@@ -243,18 +253,10 @@ mod tests {
 
     #[test]
     fn affine_scale_changes_capsule_intersection() {
-        let sphere = FixedAffineCapsule::new(
+        let sphere = FixedAffineCapsule::new(FixedMat4::IDENTITY, FGi32::ZERO, FGi32::lit("1"));
-            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(
+        let squashed = FixedAffineCapsule::new(squashed_transform, FGi32::ZERO, FGi32::lit("1"));
-            squashed_transform,
-            FGi32::ZERO,
-            FGi32::lit("1"),
-        );
         let target = FixedCapsule::new(
             FGVec3::lit("0", "1.4", "0"),
             FGVec3::lit("0", "1.4", "0"),

src/fighter/manifest.rs

@@ -1,9 +1,6 @@
 use std::collections::HashMap;
 
-use bevy::{
+use bevy::{asset::UntypedHandle, prelude::*};
-    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]
@@ -108,6 +128,13 @@ 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,

src/fighter/mod.rs

@@ -13,6 +13,7 @@ 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;
@@ -26,11 +27,22 @@ 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, Grounded,
+};
 
 use crate::{
-    fighter::{
+    AppState, fighter::{
-        attack::{FighterAttackPlugin, FighterAttackScriptAssets, FighterSolvedHurtboxes}, baked_animation::FighterBoneMatrices, hurtbox::FixedCapsule, manifest::FighterManifest, state::{FighterState, fall::FallState}, visual::FighterAnimations,
+        attack::{
+            AttackKind, FighterAttackPlugin, FighterAttackScriptAssets, FighterDamage,
+            FighterKnockbackVelocity, FighterPendingHitReaction, FighterReceivedAttacks,
+            FighterSolvedHurtboxes, FighterStaleMoveQueue,
+        },
+        baked_animation::{FighterBoneIndexMap, FighterBoneMatrices},
+        manifest::FighterManifest,
+        state::{FighterState, 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 +58,11 @@ pub enum FighterFacingDirection {
     Right,
 }
 
+#[derive(Component, Default, Copy, Clone, Hash)]
+pub struct FighterHitstop {
+    pub remaining_frames: u32,
+}
+
 impl FighterFacingDirection {
     fn reverse(&self) -> Self {
         match self {
@@ -91,10 +108,21 @@ impl FighterFacingDirection {
 pub struct FighterVisual;
 
 #[derive(Component)]
+#[require(
+    FighterReceivedAttacks,
+    FighterStaleMoveQueue,
+    FighterDamage,
+    FighterPendingHitReaction,
+    FighterHitstop,
+    FighterKnockbackVelocity
+)]
 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 +130,8 @@ 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 +139,9 @@ 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,
@@ -136,6 +167,8 @@ 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 +177,23 @@ 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::<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_component_with_clone::<FighterReceivedAttacks>()
+            .checksum_component_with_hash::<FighterReceivedAttacks>()
             .rollback_resource_with_reflect::<StageCollision>()
             // Debug views.
             .add_systems(
@@ -165,7 +210,13 @@ 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,
@@ -182,64 +233,69 @@ impl Plugin for FighterPlugin {
             .register_type::<FighterFacingDirection>();
     }
 }
-
+#[derive(Clone, Debug, Hash)]
-#[derive(Component, Clone, Hash)]
+pub struct FighterActiveAttack {
-pub struct FighterHitboxes {
+    pub kind: AttackKind,
-    pub attack_script: Option<Handle<FighterAttackScript>>,
+    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>,
 }
 
-impl FighterHitboxes {
+#[derive(Component, Clone, Debug, Default, Hash)]
-    pub fn clear(&mut self) {
+pub struct FighterHitboxes(pub Option<FighterActiveAttack>);
-        self.attack_script = None;
-        self.active_hitboxes.clear();
-    }
-}
 
 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,
-) {
+) -> Entity {
-    commands.spawn((
+    commands
-        Name(format!("Fighter {player_handle}").into()),
+        .spawn((
-        Player {
+            Name(format!("Fighter {player_handle}").into()),
-            handle: player_handle,
+            Player {
-        },
+                handle: player_handle,
-        Fighter { manifest: manifest },
-        FighterFacingDirection::Right,
-        (
-            FighterECB {
-                vertical_half: FGi32::lit("5.0"),
-                horizontal_half: FGi32::lit("2.5"),
             },
-            FighterHitboxes {
+            Fighter { manifest: manifest },
-                attack_script: None,
+            FighterFacingDirection::Right,
-                active_hitboxes: vec![],
+            FighterPreviousFacingDirection(FighterFacingDirection::Right),
-                active_hitboxes_solved: vec![]
+            Transform::from_scale(Vec3::splat(model_scale.to_num())),
-            },
+            (
-        ),
+                FighterECB {
-        (
+                    vertical_half: FGi32::lit("5.0"),
-            FighterVelocity::default(),
+                    horizontal_half: FGi32::lit("2.5"),
-            FighterTranslation(spawn_position),
+                },
-            FighterPreviousTranslation(spawn_position),
+                FighterHitboxes::default(),
-        ),
+            ),
-        visual_root,
+            (
-        animations,
+                FighterVelocity::default(),
-        attack_scripts,
+                FighterTranslation(spawn_position),
-        FighterState::Fall(FallState),
+                FighterPreviousTranslation(spawn_position),
-        animation::FighterAnimationFrame::new(animation::AnimKind::Wait, true),
+            ),
-        (
+            visual_root,
-            baked_animation::FighterBoneMatrices::default(),
+            animations,
-            FighterSolvedHurtboxes::default(),
+            attack_scripts,
-            FighterVisual,
+            FighterState::Fall(FallState),
-            FighterInput::default(),
+            animation::FighterAnimationFrame::new(animation::AnimKind::Wait, true),
-            crate::camera::FighterCameraExtents::default(),
+            (
-        ),
+                baked_animation::FighterBoneMatrices::default(),
-    ));
+                FighterBoneIndexMap::default(),
+                FighterSolvedHurtboxes::default(),
+                FighterVisual,
+                FighterInput::default(),
+                crate::camera::FighterCameraExtents::default(),
+            ),
+        ))
+        .id()
+}
+
+pub fn decay_hitstop(query: Query<&mut FighterHitstop>) {
+    for mut hitstop in query {
+        hitstop.remaining_frames = hitstop.remaining_frames.saturating_sub(1);
+    }
 }

src/fighter/motion.rs

@@ -10,6 +10,9 @@ use crate::{
     math::{int::FGi32, vec::FGVec2, vec3::FGVec3},
 };
 
+#[derive(Component, Clone, Copy, Hash)]
+pub struct FighterPreviousFacingDirection(pub FighterFacingDirection);
+
 #[derive(Component, Clone, Copy, Hash)]
 pub struct Grounded;
 
@@ -100,6 +103,20 @@ pub fn copy_fighter_transform_to_visuals(fighters: Query<(&FighterTranslation, &
 
 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;
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;
@@ -127,4 +144,34 @@ 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);
+    }
 }

src/fighter/state/air.rs

@@ -18,32 +18,24 @@ pub fn apply_air_drift(
             velocity.x += (-velocity_sign) * attribs.air_friction;
         }
     } else {
-        let target_velocity =
+        let target_velocity = input.get_last_frame().movement.x * attribs.air_drift_max;
-            input.get_last_frame().movement.x.signum() * attribs.max_air_horizontal_velocity;
+        let mut acceleration = input.get_last_frame().movement.x.signum()
-        let acceleration =
+            * attribs.air_acceleration_base
-            input.get_last_frame().movement.x.signum() * attribs.air_acceleration_base;
+            + input.get_last_frame().movement.x * attribs.air_acceleration_stick;
-        let mut acceleration =
+
-            acceleration + input.get_last_frame().movement.x * attribs.air_acceleration_stick;
+        // Acceleration opposes velocity
-        let velocity_x = velocity.x;
+        if acceleration * velocity.x < 0 {
-        if !(velocity_x * acceleration < FGi32::ZERO) {
+            // do nothing
-            if acceleration > FGi32::ZERO {
+        } else {
-                if velocity_x + acceleration > target_velocity {
+            let predicted_vel = velocity.x + acceleration;
-                    acceleration = -attribs.air_friction;
+            let will_go_past = predicted_vel.abs() > target_velocity.abs();
-                    if velocity_x + acceleration < target_velocity {
+
-                        acceleration = target_velocity - velocity_x;
+            if velocity.x.abs() < target_velocity.abs() && will_go_past {
-                    }
+                // Prevent overshoot
-                    if velocity_x + acceleration > attribs.max_air_horizontal_velocity {
+                acceleration = target_velocity - velocity.x
-                        acceleration = attribs.max_air_horizontal_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));
-            } 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;
-                }
             }
         }
 
@@ -60,3 +52,69 @@ pub fn apply_air_motion(
     prev_translation.0 = translation.0;
     translation.0 += velocity.0;
 }
+
+#[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,
+            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);
+    }
+}

src/fighter/state/air_dodge.rs

@@ -3,8 +3,10 @@ use crate::{
         animation::AnimKind,
         collision,
         state::{
-            FighterState, FighterStateContext, FighterStateImpl, air, fall::FallState,
+            FighterState, FighterStateContext, FighterStateImpl, air,
-            ground::GroundedStateCommon, land::LandingState,
+            fall::FallState,
+            ground::GroundedStateCommon,
+            land::{LandingState, LandingType},
         },
     },
     input,
@@ -47,7 +49,10 @@ impl FighterStateImpl for AirDodgeState {
             let grounded_common = GroundedStateCommon {
                 current_line_id: res.line_id,
             };
-            Some(FighterState::Land(LandingState { grounded_common }))
+            Some(FighterState::Land(LandingState {
+                grounded_common,
+                landing_type: LandingType::Special,
+            }))
         } else {
             None
         }

src/fighter/state/dash.rs

@@ -11,7 +11,7 @@ use crate::input::FighterCommands::{SmashMoveLeft, SmashMoveRight};
 #[derive(Debug, Clone)]
 pub struct DashState {
     direction: FighterFacingDirection,
-    ground_common: GroundedStateCommon,
+    pub ground_common: GroundedStateCommon,
 }
 
 impl std::hash::Hash for DashState {

src/fighter/state/fall.rs

@@ -2,7 +2,7 @@ use super::{FighterStateContext, FighterStateImpl};
 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::land::{LandingState, LandingType};
 use crate::fighter::state::{FighterState, air, jump};
 
 #[derive(Debug, Clone, Copy, Hash)]
@@ -45,7 +45,10 @@ impl FighterStateImpl for FallState {
             let grounded_common = GroundedStateCommon {
                 current_line_id: res.line_id,
             };
-            Some(FighterState::Land(LandingState { grounded_common }))
+            Some(FighterState::Land(LandingState::create(
+                grounded_common,
+                LandingType::Normal,
+            )))
         } else {
             None
         }

src/fighter/state/ground.rs

@@ -9,9 +9,9 @@ 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 crate::stage::line::{StageLineID, StagePoly, StagePolyLineSegment, StagePolyLineSegmentType};
 
 use bevy::prelude::*;
 
@@ -74,6 +74,85 @@ 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,
@@ -87,7 +166,7 @@ pub fn apply_grounded_motion(
 pub fn collide_with_stage_grounded(
     state_context: &mut FighterStateContext,
     ground_common: &mut GroundedStateCommon,
-    _can_walk_off: bool,
+    can_walk_off: bool,
 ) -> GroundedMotionResult {
     let translation = &mut state_context.translation;
     let ecb = &state_context.ecb;
@@ -99,49 +178,149 @@ pub fn collide_with_stage_grounded(
 
     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;
+        match resolve_grounded_position(
-
+            stage_poly,
-        // First, we check the current segment, if that fails, we check the surrounding ones
+            ground_common.current_line_id.segment,
-        let grounded_ecb_bottom_pos = [
+            ecb_bottom_pos,
-            Some(current_segment_idx),
+            can_walk_off,
-            stage_poly.get_prev_segment_index(current_segment_idx),
+        ) {
-            stage_poly.get_next_segment_index(current_segment_idx),
+            GroundedPositionResult::InGround {
-        ]
+                point,
-        .into_iter()
+                segment_idx,
-        .flatten()
+                blocked,
-        .find_map(|segment_idx| {
+            } => {
-            let segment = stage_poly.get_segment(segment_idx)?;
+                let current_segment = stage_poly.get_segment(segment_idx).unwrap();
-            if segment.segment_type != StagePolyLineSegmentType::Floor {
+                translation.0 = point - ecb.get_bottom_point();
-                return None;
+                state_context.velocity.0 = if blocked {
+                    FGVec2::ZERO
+                } else {
+                    state_context.velocity.0
+                        - state_context
+                            .velocity
+                            .0
+                            .project_onto_normalized(current_segment.normal)
+                };
+                ground_common.current_line_id.segment = segment_idx;
+                GroundedMotionResult::InGround
             }
-
+            GroundedPositionResult::InAir => GroundedMotionResult::InAir,
-            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));
-            }
-
-            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 {
         GroundedMotionResult::InAir
     }
 }
 
+#[cfg(test)]
+mod tests {
+    use super::*;
+    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
+        ));
+    }
+}
+
 pub fn grounded_movement_common_interrupts(
     state_context: &FighterStateContext,
     ground_common: &GroundedStateCommon,

src/fighter/state/ground_attack.rs

@@ -1,11 +1,6 @@
-use fixed::types::I16F16;
+use crate::fighter::{
-
+    attack::{AttackKind, update_active_hitbox_list},
-use crate::{
+    state::{FighterState, FighterStateImpl, ground::GroundedStateCommon, wait::WaitState},
-    fighter::{
-        attack::{AttackKind, update_active_hitbox_list},
-        state::{FighterState, FighterStateImpl, ground::GroundedStateCommon, wait::WaitState},
-    },
-    math::int::FGi32,
 };
 
 #[derive(Clone, Debug, Hash)]
@@ -31,14 +26,19 @@ impl FighterStateImpl for GroundAttackState {
     }
 
     fn update(&mut self, state_context: &mut super::FighterStateContext) {
+        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,
             );
         }
@@ -46,13 +46,19 @@ impl FighterStateImpl for GroundAttackState {
 
     fn on_enter(&mut self, state_context: &mut super::FighterStateContext) {
         state_context.play_animation(self.attack_kind.get_animation(), false);
-        state_context.hitboxes.attack_script =
+        let script = state_context.attack_script_assets.scripts[&self.attack_kind].clone();
-            Some(state_context.attack_script_assets.scripts[&self.attack_kind].clone());
+        state_context.stale_move_queue.push(self.attack_kind);
-        state_context.hitboxes.active_hitboxes.clear();
+        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(),
+        });
     }
 
     fn on_exit(&mut self, state_context: &mut super::FighterStateContext) {
-        state_context.hitboxes.clear();
+        state_context.hitboxes.0 = None;
     }
 
     fn check_collision_interrupt(
@@ -71,7 +77,10 @@ pub fn check_interrupt(
         .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(),

src/fighter/state/hitstun.rs

@@ -0,0 +1,117 @@
+use crate::{
+    fighter::{
+        animation::AnimKind,
+        attack::FighterHitReaction,
+        collision,
+        state::{
+            FighterState, FighterStateContext, FighterStateImpl, air,
+            fall::FallState,
+            ground::{GroundedMotionResult, GroundedStateCommon, collide_with_stage_grounded},
+            land::{LandingState, LandingType},
+            wait::WaitState,
+        },
+    },
+    math::int::FGi32,
+};
+
+#[derive(Clone, Debug, Hash)]
+pub enum HitstopStateKind {
+    Grounded(GroundedStateCommon),
+    Airborne,
+}
+
+#[derive(Clone, Debug, Hash)]
+pub struct HitstunState {
+    pub hit_reaction: FighterHitReaction,
+    pub hitstop_kind: HitstopStateKind,
+}
+
+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 FighterStateContext) -> Option<FighterState> {
+        if state_context.get_current_animation_frame() > self.hit_reaction.hitstun_frames {
+            match &self.hitstop_kind {
+                HitstopStateKind::Grounded(grounded_state_common) => {
+                    Some(FighterState::Wait(WaitState {
+                        grounded_common: grounded_state_common.clone(),
+                    }))
+                }
+                HitstopStateKind::Airborne => Some(FighterState::Fall(FallState)),
+            }
+        } else {
+            None
+        }
+    }
+
+    fn update(&mut self, ctx: &mut FighterStateContext) {
+        air::integrate_gravity(ctx.velocity, &ctx.fighter_manifest.attributes);
+
+        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 FighterStateContext) {
+        let animation = match self.hitstop_kind {
+            HitstopStateKind::Grounded(_) => AnimKind::FlinchGround,
+            HitstopStateKind::Airborne => AnimKind::FlinchAir,
+        };
+        state_context.play_animation(animation, false);
+        state_context.knockback_velocity.0 = self.hit_reaction.launch_velocity;
+    }
+
+    fn on_exit(&mut self, _state_context: &mut FighterStateContext) {}
+
+    fn check_collision_interrupt(
+        &mut self,
+        state_context: &mut FighterStateContext,
+    ) -> Option<FighterState> {
+        match &mut self.hitstop_kind {
+            HitstopStateKind::Grounded(grounded_state_common) => {
+                if let GroundedMotionResult::InAir =
+                    collide_with_stage_grounded(state_context, grounded_state_common, true)
+                {
+                    Some(FighterState::Fall(FallState {}))
+                } else {
+                    None
+                }
+            }
+            HitstopStateKind::Airborne => {
+                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::create(
+                        grounded_common,
+                        LandingType::Normal,
+                    )))
+                } else {
+                    None
+                }
+            }
+        }
+    }
+}

src/fighter/state/jump.rs

@@ -9,7 +9,7 @@ use crate::{
             air_dodge::{self, AirDodgeState},
             fall::FallState,
             ground::{self, GroundedMotionResult, GroundedStateCommon},
-            land::LandingState,
+            land::{LandingState, LandingType},
         },
     },
     input::FighterCommands,
@@ -174,7 +174,13 @@ 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);
+                }
             }
         }
 
@@ -233,7 +239,10 @@ impl FighterStateImpl for JumpState {
             let grounded_common = GroundedStateCommon {
                 current_line_id: res.line_id,
             };
-            Some(FighterState::Land(LandingState { grounded_common }))
+            Some(FighterState::Land(LandingState::create(
+                grounded_common,
+                LandingType::Normal,
+            )))
         } else {
             None
         }

src/fighter/state/land.rs

@@ -11,14 +11,24 @@ use crate::fighter::{
     },
 };
 
+#[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 {
+    pub fn create(grounded_common: GroundedStateCommon, landing_type: LandingType) -> Self {
-        Self { grounded_common }
+        Self {
+            grounded_common,
+            landing_type,
+        }
     }
 }
 
@@ -30,6 +40,7 @@ impl FighterStateImpl for LandingState {
             grounded_movement_standstill_common_interrupts(state_context, &self.grounded_common)
         } else if state_context.get_current_animation_frame()
             >= state_context.fighter_manifest.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)
@@ -69,7 +80,7 @@ impl FighterStateImpl for LandingState {
         state_context: &mut FighterStateContext,
     ) -> Option<FighterState> {
         if let GroundedMotionResult::InAir =
-            ground::collide_with_stage_grounded(state_context, &mut self.grounded_common, false)
+            ground::collide_with_stage_grounded(state_context, &mut self.grounded_common, true)
         {
             Some(FighterState::Fall(FallState))
         } else {
@@ -78,6 +89,13 @@ impl FighterStateImpl for LandingState {
     }
 
     fn on_enter(&mut self, state_context: &mut FighterStateContext) {
-        state_context.play_animation(AnimKind::Landing, false);
+        match self.landing_type {
+            LandingType::Normal => {
+                state_context.play_animation(AnimKind::Landing, false);
+            }
+            LandingType::Special => {
+                state_context.play_animation(AnimKind::LandingSpecial, false);
+            }
+        };
     }
 }

src/fighter/state/mod.rs

@@ -6,14 +6,18 @@ 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,
+};
 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,
+    Fighter, FighterECB, FighterFacingDirection, FighterHitboxes, FighterHitstop,
-    FighterTranslation, FighterVelocity,
+    FighterPreviousTranslation, FighterTranslation, FighterVelocity,
 };
 use crate::game_settings::GameSettings;
 use crate::input::FighterInput;
@@ -26,6 +30,7 @@ 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;
@@ -74,6 +79,9 @@ pub trait FighterStateImpl: Sized {
 
     fn on_enter(&mut self, _state_context: &mut FighterStateContext) {}
     fn on_exit(&mut self, _state_context: &mut FighterStateContext) {}
+    fn name(&self) -> String {
+        Self::NAME.to_owned()
+    }
     fn update(&mut self, _state_context: &mut FighterStateContext);
 
     fn check_collision_interrupt(
@@ -90,6 +98,8 @@ pub struct FighterStateContext<'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 ecb: &'a mut FighterECB,
     pub prev_ecb: &'a mut FighterPreviousECB,
     pub facing_direction: &'a mut FighterFacingDirection,
@@ -136,6 +146,7 @@ fighter_states! {
     AirDodge => air_dodge::AirDodgeState,
     Turn => turn::TurnState,
     GroundAttack => ground_attack::GroundAttackState,
+    Hitstun => hitstun::HitstunState,
 }
 
 #[derive(QueryData)]
@@ -146,6 +157,8 @@ pub struct FighterFrameQuery {
     pub input: &'static mut FighterInput,
     pub hitboxes: &'static mut FighterHitboxes,
     pub velocity: &'static mut FighterVelocity,
+    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 facing_direction: &'static mut FighterFacingDirection,
@@ -170,6 +183,8 @@ impl<'w, 's> FighterFrameQueryItem<'w, 's> {
             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,
             ecb: &mut self.ecb,
             prev_ecb: &mut self.prev_ecb,
             facing_direction: &mut self.facing_direction,
@@ -188,21 +203,13 @@ 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,
-}
+    pub pending_hit_reaction: &'static mut FighterPendingHitReaction,
-
+    pub hitstop: &'static mut FighterHitstop,
-#[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 fn state_update_system(
@@ -218,9 +225,14 @@ pub fn state_update_system(
             mut state,
             mut frame,
             animations,
+            hitstop,
             ..
         } = fighter;
 
+        if hitstop.remaining_frames > 0 {
+            continue;
+        }
+
         let mut update_ctx = frame.context(
             &game_settings,
             &stage_collision,
@@ -236,6 +248,20 @@ pub fn state_update_system(
     }
 }
 
+fn transition_state(
+    current: &mut FighterState,
+    mut next: FighterState,
+    ctx: &mut FighterStateContext,
+) {
+    let old_name = current.name();
+    let new_name = next.name();
+
+    current.on_exit(ctx);
+    next.on_enter(ctx);
+    *current = next;
+    info!("{} -> {}", old_name, new_name);
+}
+
 pub fn state_interrupt_system(
     mut query: Query<StatefulFighterQuery>,
     stage_collision: Res<StageCollision>,
@@ -243,16 +269,16 @@ pub fn state_interrupt_system(
     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,
         } = fighter;
         let mut state_context = frame.context(
             &game_settings,
@@ -265,17 +291,43 @@ pub fn state_interrupt_system(
                 .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 new_state = if let Some(reaction) = pending_hit_reaction.take() {
-            let old_state_name = state.name();
+            hitstop.remaining_frames = *reaction.hitstop_frames;
-            let new_state_name = new_state.name();
+            let hitstop_kind = match &*state {
-            state.on_exit(&mut state_context);
+                FighterState::Wait(value) => {
-            new_state.on_enter(&mut state_context);
+                    hitstun::HitstopStateKind::Grounded(value.grounded_common.clone())
-            commands
+                }
-                .entity(entity)
+                FighterState::Walk(value) => {
-                .insert((new_state, StateNameDebug(new_state_name)));
+                    hitstun::HitstopStateKind::Grounded(value.grounded_common.clone())
-            info!("State {} -> {}", old_state_name, new_state_name);
+                }
-        }
+                FighterState::Dash(value) => {
+                    hitstun::HitstopStateKind::Grounded(value.ground_common.clone())
+                }
+                FighterState::Run(value) => {
+                    hitstun::HitstopStateKind::Grounded(value.grounded_common.clone())
+                }
+                FighterState::Turn(value) => {
+                    hitstun::HitstopStateKind::Grounded(value.grounded_common.clone())
+                }
+                FighterState::GroundAttack(value) => {
+                    hitstun::HitstopStateKind::Grounded(value.grounded_common.clone())
+                }
+                _ => hitstun::HitstopStateKind::Airborne,
+            };
+            Some(FighterState::Hitstun(HitstunState {
+                hit_reaction: reaction,
+                hitstop_kind,
+            }))
+        } else if hitstop.remaining_frames > 0 {
+            None
+        } else {
+            state.check_interrupt(&mut state_context)
+        };
+
+        if let Some(new_state) = new_state {
+            transition_state(&mut state, new_state, &mut state_context);
+        };
     }
 }
 
@@ -286,16 +338,16 @@ pub fn state_collision_interrupt_system(
     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,
+            hitstop,
+            ..
         } = fighter;
         let mut state_context = frame.context(
             &game_settings,
@@ -308,16 +360,13 @@ pub fn state_collision_interrupt_system(
                 .get(&fighter.manifest)
                 .expect("Fighter manifest should be valid"),
         );
+
+        if hitstop.remaining_frames > 0 {
+            continue;
+        }
+
         if let Some(new_state) = state.check_collision_interrupt(&mut state_context) {
-            let mut new_state = new_state;
+            transition_state(&mut state, new_state, &mut state_context);
-            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);
         }
     }
 }

src/fighter/state/turn.rs

@@ -3,17 +3,29 @@ use crate::fighter::animation::AnimKind;
 use crate::fighter::state::fall::FallState;
 use crate::fighter::state::ground::{self, GroundedMotionResult, GroundedStateCommon};
 use crate::fighter::state::{FighterState, dash, jump, wait, walk};
+use crate::input::FighterCommands;
 
 #[derive(Debug, Clone, Hash)]
 pub struct TurnState {
-    grounded_common: GroundedStateCommon,
+    pub grounded_common: GroundedStateCommon,
 }
 
 impl FighterStateImpl for TurnState {
     const NAME: &'static str = "Turn";
     fn check_interrupt(&self, state_context: &mut FighterStateContext) -> Option<FighterState> {
         // State chain that results in the turn completing
+        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, &self.grounded_common) {
+                return Some(state);
+            }
+        }
         if let Some(state) = jump::check_input(state_context, &self.grounded_common) {
+            *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) {
@@ -78,13 +90,17 @@ pub fn check_input(
     grounded_common: &GroundedStateCommon,
 ) -> Option<FighterState> {
     let input_frame = state_context.input.get_last_frame();
-    let smash_input_frame_threshold = state_context
+
-        .game_settings
+    let has_smash_input = state_context
-        .input_common
+        .input
-        .smash_input_frame_threshold;
+        .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(),

src/fighter/state/walk.rs

@@ -3,7 +3,6 @@ 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 {
@@ -13,9 +12,7 @@ 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) {
+        if let Some(state) =
-            return Some(state);
-        } else if let Some(state) =
             ground::grounded_movement_common_interrupts(state_context, &self.grounded_common)
         {
             return Some(state);

src/game_settings.rs

@@ -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};
@@ -10,6 +11,10 @@ pub struct FighterSettingsCommon {
     pub walk_speed_ease: FGi32,
     pub ground_max_horizontal_velocity: FGi32,
     pub ground_friction_over_walk_speed_multiplier: FGi32,
+    pub knockback_stacking_window: u32,
+    pub knockback_decay_per_frame: FGi32,
+    pub knockback_launch_velocity_multiplier: FGi32,
+    pub hitstun_frames_per_unit_knockback: FGi32,
 }
 #[derive(Reflect, Serialize, Deserialize, Clone)]
 #[reflect(opaque)]
@@ -21,9 +26,10 @@ 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,

src/input/buffer.rs

@@ -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;
 
@@ -177,7 +176,8 @@ 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 +190,8 @@ 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);
             }
         }
 
@@ -215,21 +216,10 @@ pub fn postprocess_input(
             );
         }
 
-        if x_abs >= axis_threshold && input.frames_in_x_flick_deadzone <= frame_threshold {
+        let mut y_flick_detected =
-            input.clear_command(FighterCommands::SmashMoveLeft);
+            y_abs >= axis_threshold && input.frames_in_y_flick_deadzone <= frame_threshold;
-            input.clear_command(FighterCommands::SmashMoveRight);
+        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
-            } else {
-                FighterCommands::SmashMoveLeft
-            };
-
-            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
 
@@ -270,11 +260,13 @@ 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);

src/input/gamecube/bridge.rs

@@ -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!(
+            send_axis!(GamepadAxis::RightStickX, now.right_stick.0);
-                GamepadAxis::RightStickX,
+            send_axis!(GamepadAxis::RightStickY, now.right_stick.1);
-                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!(
-            send_button!(GamepadButton::RightTrigger2, unsigned_axis_float(now.triggers.1));
+                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!(a, GamepadButton::East);
-        digital!(b, GamepadButton::West);
+        digital!(b, GamepadButton::South);
-        digital!(x, GamepadButton::East);
+        digital!(x, GamepadButton::North);
-        digital!(y, GamepadButton::North);
+        digital!(y, GamepadButton::West);
         digital!(z, GamepadButton::Z);
         digital!(start, GamepadButton::Start);
         digital!(dpad_up, GamepadButton::DPadUp);

src/input/gamecube/mod.rs

@@ -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)]

src/input/gamecube/poll.rs

@@ -98,12 +98,9 @@ pub fn spawn_poll_thread() -> Result<GcAdapterSnapshot, gc_adapter_neo::UsbError
         .name("gc-adapter-poll".into())
         .spawn(move || {
             // Flush whatever the adapter had buffered before we started
-            if let Err(payload) =
+            if let Err(payload) = panic::catch_unwind(AssertUnwindSafe(|| adapter.refresh_inputs()))
-                panic::catch_unwind(AssertUnwindSafe(|| adapter.refresh_inputs()))
             {
-                error!(
+                error!("GameCube Controller Adapter USB refresh panicked on startup: {payload:?}");
-                    "GameCube Controller Adapter USB refresh panicked on startup: {payload:?}"
-                );
             }
 
             #[cfg(debug_assertions)]
@@ -112,8 +109,7 @@ pub fn spawn_poll_thread() -> Result<GcAdapterSnapshot, gc_adapter_neo::UsbError
             let mut rate_window_count: u32 = 0;
 
             while !thread_shutdown.load(Ordering::Relaxed) {
-                let result =
+                let result = panic::catch_unwind(AssertUnwindSafe(|| adapter.read_controllers()));
-                    panic::catch_unwind(AssertUnwindSafe(|| adapter.read_controllers()));
 
                 let controllers = match result {
                     Ok(Ok(controllers)) => controllers,
@@ -142,7 +138,8 @@ 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;
 

src/input/gamepad.rs

@@ -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::MovementXDir(sign) => {
-                    InputMapAction::MovementYDir(sign) => if pressed { movement.y += sign as f32 },
+                        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,
                     _ => {}
-                    }
+                }
             }
         }
     }

src/input/keyboard.rs

@@ -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,
-
         }
     }
 

src/input/mod.rs

@@ -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 {
-                MenuKeyboardInputMapElement { key: KeyCode::ArrowDown, action: MenuInputMapAction::MovementYDir(-1) },
+                    key: KeyCode::ArrowUp,
-                MenuKeyboardInputMapElement { key: KeyCode::ArrowLeft, action: MenuInputMapAction::MovementXDir(-1) },
+                    action: MenuInputMapAction::MovementYDir(1),
-                MenuKeyboardInputMapElement { key: KeyCode::ArrowRight, action: MenuInputMapAction::MovementXDir(1) },
+                },
-                MenuKeyboardInputMapElement { key: KeyCode::Enter, action: MenuInputMapAction::Accept },
+                MenuKeyboardInputMapElement {
-                MenuKeyboardInputMapElement { key: KeyCode::Escape, action: MenuInputMapAction::Back },
+                    key: KeyCode::ArrowDown,
-                MenuKeyboardInputMapElement { key: KeyCode::Space, action: MenuInputMapAction::Start },
+                    action: MenuInputMapAction::MovementYDir(-1),
-                MenuKeyboardInputMapElement { key: KeyCode::KeyW, action: MenuInputMapAction::MovementYDir(1) },
+                },
-                MenuKeyboardInputMapElement { key: KeyCode::KeyS, action: MenuInputMapAction::MovementYDir(-1) },
+                MenuKeyboardInputMapElement {
-                MenuKeyboardInputMapElement { key: KeyCode::KeyA, action: MenuInputMapAction::MovementXDir(-1) },
+                    key: KeyCode::ArrowLeft,
-                MenuKeyboardInputMapElement { key: KeyCode::KeyD, action: MenuInputMapAction::MovementXDir(1) },
+                    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 {
-                MenuGamepadInputMapElement { binding: GamepadBinding::Button(GamepadButton::DPadDown), action: MenuInputMapAction::MovementYDir(-1) },
+                    binding: GamepadBinding::Button(GamepadButton::DPadUp),
-                MenuGamepadInputMapElement { binding: GamepadBinding::Button(GamepadButton::DPadLeft), action: MenuInputMapAction::MovementXDir(-1) },
+                    action: MenuInputMapAction::MovementYDir(1),
-                MenuGamepadInputMapElement { binding: GamepadBinding::Button(GamepadButton::DPadRight), action: MenuInputMapAction::MovementXDir(1) },
+                },
-                MenuGamepadInputMapElement { binding: GamepadBinding::Axis(GamepadAxis::LeftStickX, 1), action: MenuInputMapAction::MovementXDir(1) },
+                MenuGamepadInputMapElement {
-                MenuGamepadInputMapElement { binding: GamepadBinding::Axis(GamepadAxis::LeftStickY, 1), action: MenuInputMapAction::MovementYDir(1) },
+                    binding: GamepadBinding::Button(GamepadButton::DPadDown),
-                MenuGamepadInputMapElement { binding: GamepadBinding::Button(GamepadButton::South), action: MenuInputMapAction::Accept },
+                    action: MenuInputMapAction::MovementYDir(-1),
-                MenuGamepadInputMapElement { binding: GamepadBinding::Button(GamepadButton::West), action: MenuInputMapAction::Back },
+                },
-                MenuGamepadInputMapElement { binding: GamepadBinding::Button(GamepadButton::Start), action: MenuInputMapAction::Start },
+                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 {
+            None => FighterInputFrame::default(),
-            Some(pad) => gamepad::sample_gamepad(pad, &input_map),
-            None => keyboard::sample_keyboard(&key, &input_map),
-            },
         };
 
         // preprocess frame

src/lib.rs

@@ -22,12 +22,15 @@
 //! 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,
@@ -42,13 +45,13 @@ pub mod game_settings;
 pub mod input;
 pub mod match_loading;
 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;
 
 #[derive(States, Debug, Clone, Copy, Eq, PartialEq, Hash, Default)]
@@ -61,6 +64,7 @@ pub enum AppState {
     LoadStageManifests,
     PrepareStageManifests,
     CommonAssetLoadFailed,
+    PreMainMenu,
     MainMenu,
     CharacterSelect,
     StageSelect,
@@ -139,7 +143,7 @@ impl Plugin for GamePlugin {
                 stage::manifest::prepare_stage_manifests,
             )
             .add_systems(
-                OnEnter(AppState::MainMenu),
+                OnEnter(AppState::PreMainMenu),
                 match_loading::initiate_default_match,
             )
             .add_systems(

src/main.rs

@@ -1,7 +1,3 @@
-//! 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;
 use bevy::camera_controller::free_camera::FreeCameraPlugin;
 use bevy::image::{ImageAddressMode, ImagePlugin, ImageSamplerDescriptor};
@@ -30,7 +26,7 @@ fn main() -> AppExit {
     App::new()
         .add_plugins(default_plugins)
         .add_plugins(avian3d::prelude::PhysicsPlugins::default())
-        .add_plugins(game_test::GamePlugin)
+        .add_plugins(shinespark::GamePlugin)
         .add_plugins(FreeCameraPlugin)
         .add_plugins(EguiPlugin::default())
         .add_plugins(WorldInspectorPlugin::default()) // adds default options and `InspectorEguiImpl`s

src/match_loading.rs

@@ -11,14 +11,15 @@ 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},
     math::{int::FGi32, vec::FGVec2},
     netcode::{GGRSCfg, session::create_session},
     scripting::FighterAttackScript,
@@ -146,9 +147,15 @@ pub fn initiate_match(
 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;
     }
@@ -169,9 +176,6 @@ pub fn initiate_default_match(
         }
         return;
     }
-    if !args.synctest {
-        return;
-    }
     let players = (0..args.players)
         .map(|handle| MatchPlayer {
             handle,
@@ -179,6 +183,12 @@ pub fn initiate_default_match(
         })
         .collect();
 
+    assigments.push((0, LocalInputSource::Keyboard));
+
+    for (idx, entity) in gamepads.iter().take(args.players - 1).enumerate() {
+        assigments.push((idx + 1, LocalInputSource::Gamepad(entity)));
+    }
+
     initiate_match(
         &mut commands,
         &mut next_state,
@@ -195,6 +205,7 @@ pub fn prepare_match(
     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>>,
@@ -239,6 +250,89 @@ 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;
+        }
+        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;
@@ -270,7 +364,13 @@ 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,
+        ));
     }
 
     let session = match create_session(&args, request.players.len()) {
@@ -300,21 +400,24 @@ pub fn prepare_match(
         stage_manifest.camera.clone(),
     );
 
-    for (index, (player, (scene, animations, attack_scripts, manifest_handle))) in
+    let mut fighter_roster = Vec::with_capacity(request.players.len());
+    for (index, (player, (scene, animations, attack_scripts, manifest_handle, model_scale))) in
         request.players.iter().zip(prepared).enumerate()
     {
         let spawn_x = (index as i32 * 2 + 1 - request.players.len() as i32) * 5;
-        spawn_fighter(
+        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),
-        );
+        ));
     }
 
+    commands.insert_resource(FighterRoster(fighter_roster));
     commands.insert_resource::<Session<GGRSCfg>>(session);
     next_state.set(AppState::InMatch);
 }
@@ -348,6 +451,7 @@ pub fn cleanup_match(
     commands.remove_resource::<stage::line::StageCollision>();
     commands.remove_resource::<MatchAssets>();
     commands.remove_resource::<PendingMatch>();
+    commands.remove_resource::<FighterRoster>();
 }
 
 #[cfg(test)]

src/math/int.rs

@@ -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");

src/math/segment.rs

@@ -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)]

src/menus/button.rs

@@ -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 {
@@ -37,15 +46,34 @@ 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) {
+pub fn button_setup(
-    let styles = styles.get(&common_assets.ui_style).expect("UI styles should be loaded");
+    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) {
+pub fn button_style_system(
-    let styles = styles.get(&common_assets.ui_style).expect("UI styles should be loaded");
+    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 {
@@ -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>();

src/menus/character_select/character_box.rs

@@ -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 {

src/menus/character_select/errors.rs

@@ -1,3 +1 @@
-pub enum CharacterSelectErrors {
+pub enum CharacterSelectErrors {}
-    
-}

src/menus/character_select/fighter_portrait.rs

@@ -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),

src/menus/character_select/mod.rs

@@ -1,20 +1,19 @@
-use bevy::{
+use bevy::{picking::pointer::PointerId, prelude::*};
-    picking::pointer::{PointerId, PointerLocation},
-    prelude::*,
-};
-use bevy_egui::egui::accesskit::TextAlign;
 
 use crate::{
-    AppState, fighter::manifest::{FighterManifest, FighterManifestRegistry}, game_settings::CommonAssets, input::{LocalInputAssignments, LocalInputSource}, menus::{
+    AppState,
-        MenuMarker, build_menu_with_props,
+    fighter::manifest::{FighterManifest, FighterManifestRegistry},
+    game_settings::CommonAssets,
+    input::{LocalInputAssignments, LocalInputSource},
+    menus::{
+        MenuMarker,
         button::FGUiButton,
-        character_select::character_box::CharacterBox,
+        character_select::{character_box::CharacterBox, token::CharacterSelectToken},
         cursor::{FGMenuCursor, MenuCursorInputSource},
-        errors::MenuErrors::{self, FighterManifestNotFound},
+        errors::MenuErrors::FighterManifestNotFound,
         match_config::{MenuMatchConfig, MenuMatchPlayerSlot},
         scaling, spawn_menu,
         style::{FGUiButtonType, FGUiStyle},
-        wrap_menu,
     },
 };
 
@@ -38,10 +37,10 @@ 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>,
+    _common_assets: Res<CommonAssets>,
-    styles: Res<Assets<FGUiStyle>>,
+    _styles: Res<Assets<FGUiStyle>>,
 ) {
     let character_boxes = manifest_registry
         .iter()
@@ -67,31 +66,6 @@ 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 +73,34 @@ 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 +112,7 @@ 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 +122,7 @@ 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 +136,38 @@ 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;
+    for addition in addition.read() {
-    create_portrait(
+        let slot = addition.slot;
-        slot,
+        create_portrait(
-        query.fighter_portait_container,
+            slot,
-        commands,
+            query.fighter_portait_container,
-        styles
+            &mut commands,
-            .get(&common_assets.ui_style)
+            styles
-            .expect("UI Style should be loaded by now"),
+                .get(&common_assets.ui_style)
-        &addition.input_source,
+                .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 +179,7 @@ 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 +190,7 @@ pub fn css_auto_assign_slots(
 
 #[derive(Event)]
 pub struct FighterSelectedEvent {
-    slot: usize,
+    _slot: usize,
 }
 
 pub fn select_fighter(
@@ -209,7 +210,7 @@ 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 +225,11 @@ 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(
@@ -268,3 +273,9 @@ 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();
+    }
+}

src/menus/character_select/token.rs

@@ -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 {
+            CharacterSelectToken { slot, cursor },
-                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()
-            }
+            },
         )
     }
 }

src/menus/cursor.rs

@@ -9,7 +9,12 @@ use bevy::{
 };
 
 use crate::{
-    input::{LocalInputAssignments, LocalInputSource}, menus::{input::{MenuInput, MenuInputState}, scaling, style::FGUiStyle},
+    input::{LocalInputAssignments, LocalInputSource},
+    menus::{
+        input::{MenuInput, MenuInputState},
+        scaling,
+        style::FGUiStyle,
+    },
 };
 
 #[derive(Default)]
@@ -28,20 +33,21 @@ 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 +61,42 @@ 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) => {
+                    MenuCursorInputSource::Player(slot) => assignments
-                        assignments.get(slot).map(|(_, source)| {
+                        .get(slot)
-                            matches!(source, LocalInputSource::Keyboard)
+                        .map(|(_, source)| matches!(source, LocalInputSource::Keyboard))
-                        }).unwrap_or_default()
+                        .unwrap_or_default(),
-                    },
                 };
 
                 if is_mouse {
@@ -159,14 +182,23 @@ pub fn cursor_input(
 
 pub fn update_cursor_transform(
     camera: Single<&Camera, With<IsDefaultUiCamera>>,
-    query: Query<(&mut UiTransform, &PointerLocation), With<FGMenuCursor>>,
+    query: Query<(&mut Node, &PointerLocation), With<FGMenuCursor>>,
     ui_scale: Res<UiScale>,
 ) {
     let camera = camera.into_inner();
 
-    for (mut ui_trf, location) in query {
+    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);
+        let ui_pos = scaling::logical_to_ui_position(
-        ui_trf.translation = Val2::new(px(ui_pos.x), px(ui_pos.y));
+            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);
     }
 }
 

src/menus/errors.rs

@@ -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 {

src/menus/input.rs

@@ -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_up
-        self.movement_digital_down.accumulate(&other.movement_digital_down);
+            .accumulate(&other.movement_digital_up);
-        self.movement_digital_left.accumulate(&other.movement_digital_left);
+        self.movement_digital_down
-        self.movement_digital_right.accumulate(&other.movement_digital_right);
+            .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);
     }
 }
@@ -249,7 +253,10 @@ pub fn sample_menu_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);

src/menus/main_menu.rs

@@ -1,11 +1,8 @@
-use bevy::{
+use bevy::{prelude::*, text::FontSourceTemplate};
-    prelude::*, text::FontSourceTemplate,
-    ui::auto_directional_navigation::AutoDirectionalNavigation,
-};
 
 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) {}

src/menus/match_config.rs

@@ -1,37 +1,86 @@
 use bevy::prelude::*;
 use thiserror::Error;
 
-use crate::fighter::FighterId;
+use crate::{
+    fighter::FighterId,
+    match_loading::{MatchPlayer, PendingMatch},
+    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> {
+    pub fn set_player_fighter(
-        let slot = self.players.get_mut(player_slot).ok_or(MenuMatchConfigErrors::PlayerSlotInvalid(player_slot))?;
+        &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> {
+    pub fn get_player_fighter(
-        let slot = self.players.get(player_slot).ok_or(MenuMatchConfigErrors::PlayerSlotInvalid(player_slot))?;
+        &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_pending_match(&self) -> Result<PendingMatch, 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(PendingMatch {
+            players: match_players,
+            stage,
+        })
+    }
 }

src/menus/mod.rs

@@ -6,7 +6,6 @@ use bevy::{
     prelude::*,
 };
 
-use bevy::prelude::*;
 use ron_asset_manager::RonAssetPlugin;
 
 use crate::{
@@ -17,21 +16,21 @@ use crate::{
 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 {}
 
 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,
 {
@@ -66,6 +65,19 @@ 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())
+            .remove::<Camera2d>()
+            .remove::<Camera>()
+            .despawn();
+    }
+}
+
 pub fn spawn_menu(
     existing_menu: Option<Single<Entity, With<MenuMarker>>>,
     mut commands: Commands,
@@ -88,10 +100,8 @@ where
     S::scene(props)
 }
 
-pub fn build_menu<S>(
+pub fn build_menu<S>(existing_menu: Option<Single<Entity, With<MenuMarker>>>, commands: Commands)
-    existing_menu: Option<Single<Entity, With<MenuMarker>>>,
+where
-    mut commands: Commands,
-) where
     S: SceneComponent + Default + Clone + Send + Sync,
 {
     spawn_menu(
@@ -116,10 +126,7 @@ impl Plugin for MenuPlugin {
                 ));
             }),
         )
-        .add_systems(
+        .add_message::<character_select::PlayerSlotAssigned>()
-            OnEnter(AppState::CharacterSelect),
-            character_select::setup_character_select,
-        )
         .init_resource::<navigation::UINavigationActionState>()
         .init_resource::<navigation::UINavigationRepeat>()
         .init_resource::<input::MenuInputState>()
@@ -150,35 +157,71 @@ 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,
+            OnEnter(AppState::CharacterSelect),
-            cursor::cursor_input
+            character_select::setup_character_select,
-                .before(bevy::picking::PickingSystems::ProcessInput)
+        )
+        .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,
+                character_select::handle_fighter_slot_addition,
-                cursor::update_cursor_transform,
-                character_select::copy_cursor_transform_to_token,
             )
                 .chain()
                 .run_if(in_state(AppState::CharacterSelect))
                 .run_if(any_with_component::<CharacterSelectScreen>),
         )
-        .add_systems(OnExit(AppState::CharacterSelect), cursor::despawn_cursors)
+        .add_systems(
-        .add_observer(character_select::handle_fighter_slot_addition)
+            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_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_plugins(RonAssetPlugin::<FGUiStyle>::create("stylesheet.ron"))
         .add_systems(
             Update,

src/menus/navigation.rs

@@ -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
@@ -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 {
-        if input.movement.y < 0.0 { action_state.pressed_actions.insert(DirectionalNavigationAction::Down); }
+            action_state
-        if input.movement.x < 0.0 { action_state.pressed_actions.insert(DirectionalNavigationAction::Left); }
+                .pressed_actions
-        if input.movement.x > 0.0 { action_state.pressed_actions.insert(DirectionalNavigationAction::Right); }
+                .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;

src/menus/scaling.rs

@@ -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 {
+pub fn world_to_ui_position(
-    let viewport_position = camera.world_to_viewport(camera_transform, Vec3::new(pos.x, pos.y, 0.0)).unwrap();
+    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();
 

src/menus/stage_select/mod.rs

@@ -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_pending_match()?,
+        );
+    }
+    Ok(())
+}

src/menus/stage_select/stage_box.rs

@@ -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))
+            ]
+        }
+    }
+}

src/menus/style.rs

@@ -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>,
 }

src/replay.rs

@@ -1,13 +1,24 @@
 //! 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::{MatchPlayer, PendingMatch},
+    netcode::GGRSCfg,
+    schedule::GameplaySet,
+};
 
 const MAGIC: &[u8; 8] = b"SPRPLY01";
 pub const REPLAY_VERSION: u32 = 1;
@@ -79,7 +90,12 @@ 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 +103,8 @@ 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 +113,8 @@ 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 +128,14 @@ 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 +144,10 @@ 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 +155,18 @@ 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
+        .iter()
+        .any(|frame| frame.inputs.len() != replay.match_config.players.len())
+    {
         return Err("replay frame input count does not match player count".into());
     }
     Ok(())
@@ -141,7 +174,12 @@ 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<_>>()
     }
@@ -149,23 +187,44 @@ impl Replay {
 
 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
+                .frames
+                .iter()
+                .find(|recorded| recorded.frame == frame.0)
+            else {
                 error!("Replay has no input for frame {}", frame.0);
                 *mismatch = true;
                 return;
@@ -178,14 +237,26 @@ 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 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);
+                error!(
+                    "Replay desync at frame {}: expected {:X}, got {:X}",
+                    frame.0, expected, checksum.0
+                );
                 *mismatch = true;
             }
         }
@@ -205,7 +276,11 @@ fn stop_recording(
     finish_recording_inner(&mut commands, runtime, request);
 }
 
-fn finish_recording(mut commands: Commands, runtime: Option<ResMut<ReplayRuntime>>, request: Option<Res<PendingMatch>>) {
+fn finish_recording(
+    mut commands: Commands,
+    runtime: Option<ResMut<ReplayRuntime>>,
+    request: Option<Res<PendingMatch>>,
+) {
     finish_recording_inner(&mut commands, runtime, request);
 }
 
@@ -215,38 +290,75 @@ fn finish_recording_inner(
     request: Option<Res<PendingMatch>>,
 ) {
     let Some(mut runtime) = runtime else { return };
-    let ReplayMode::Record { path, format } = &runtime.mode else { return };
+    let ReplayMode::Record { path, format } = &runtime.mode else {
-    if runtime.finished || runtime.frames.is_empty() { return; }
+        return;
+    };
+    if runtime.finished || runtime.frames.is_empty() {
+        return;
+    }
     let Some(request) = request 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() },
+        match_config: ReplayMatch {
-        frames: runtime.frames.iter().map(|(&frame, inputs)| ReplayFrame { frame, inputs: inputs.clone() }).collect(),
+            stage: request.stage,
-        checksums: runtime.checksums.iter().map(|(&frame, &checksum)| ReplayChecksum { frame, checksum }).collect(),
+            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(),
     };
-    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 };
+    let ReplayMode::Playback { replay, mismatch } = &runtime.mode else {
-    if *mismatch || replay.frames.last().is_some_and(|last| frame.0 >= last.frame) {
+        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,
+        math::{int::FGi32, vec::FGVec2},
+        stage::manifest::StageId,
+    };
 
     fn sample() -> Replay {
         Replay {
@@ -254,13 +366,22 @@ mod tests {
             game_version: "test".into(),
             match_config: ReplayMatch {
                 stage: StageId::TestStage,
-                players: vec![MatchPlayer { handle: 0, fighter: FighterId::TestFighter }],
+                players: vec![MatchPlayer {
+                    handle: 0,
+                    fighter: FighterId::TestFighter,
+                }],
             },
             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 }],
         }
     }
 

src/schedule.rs

@@ -19,9 +19,12 @@ pub enum GameplaySet {
     StateUpdate,
     /// Integrate velocities into positions.
     Physics,
+    /// Solve collision boxes
+    Animation,
     /// Resolve the integrated positions against the stage.
     Collision,
-    Animation,
+    /// Resolve attacks
+    Attacks,
 }
 
 /// Declares the order of [`GameplaySet`] inside [`GgrsSchedule`]. Added by
@@ -39,6 +42,7 @@ impl Plugin for GameplaySchedulePlugin {
                 GameplaySet::Physics,
                 GameplaySet::Collision,
                 GameplaySet::Animation,
+                GameplaySet::Attacks,
             )
                 .chain(),
         );

src/scripting/mod.rs

@@ -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(())
+    }
+}

src/scripting/move_compiler.rs

@@ -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,
+                      bone: &str,
-                    damage: FighterDamage,
+                      damage: FighterDamage,
-                    offset: FGVec3,
+                      offset: FGVec3,
-                    radius: FGi32,
+                      radius: FGi32,
-                    angle: AttackAngle,
+                      angle: AttackAngle,
-                    knockback_type: KnockbackType,
+                      knockback_type: KnockbackType,
-                    knockback: Knockback,
+                      knockback: Knockback,
-                    knockback_growth: FGi32|
+                      knockback_growth: FGi32|
-                    -> Result<(), Box<EvalAltResult>> {
+                      -> 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
-    result.map(|_| Rc::into_inner(mc).unwrap().into_inner().into_attack_script())
+        .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);
+    }
+}

src/stage/line.rs

@@ -1,6 +1,5 @@
 //! Stage collision geometry.
 
-
 use bevy::prelude::*;
 use serde::{Deserialize, Serialize};
 
@@ -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)

src/stage/manifest.rs

@@ -1,6 +1,7 @@
 use std::collections::HashMap;
 
 use bevy_asset_loader::asset_collection::AssetCollection;
+use ron_asset_manager::prelude::RonAsset;
 use serde::{Deserialize, Serialize};
 use strum::IntoEnumIterator;
 use strum_macros::EnumIter;
@@ -13,6 +14,7 @@ use crate::{
         StagePoly,
         line::{StageCollision, StagePolyLineSegmentType, StagePolyType},
     },
+    texture_reference::TextureReference,
 };
 use bevy::prelude::*;
 
@@ -60,8 +62,11 @@ pub struct StageCameraProfile {
     pub max_downward_pan_degrees: f32,
 }
 
-#[derive(Reflect, Serialize, Deserialize, Copy, Clone, Eq, PartialEq, Hash, Debug, EnumIter)]
+#[derive(
+    Reflect, Serialize, Deserialize, Copy, Clone, Eq, PartialEq, Hash, Debug, EnumIter, Default,
+)]
 pub enum StageId {
+    #[default]
     TestStage,
 }
 
@@ -72,10 +77,14 @@ pub struct StagePolyDefinition {
     lines: Vec<(FGVec2, StagePolyLineSegmentType)>,
 }
 
-#[derive(Serialize, Deserialize, Clone, Asset, Reflect)]
+#[derive(Deserialize, Clone, Asset, Reflect, RonAsset)]
 pub struct StageManifest {
     pub id: StageId,
     pub model_path: String,
+    #[asset]
+    #[dependency]
+    #[reflect(ignore)]
+    pub icon: TextureReference,
     pub camera: StageCameraProfile,
     pub polygons: Vec<StagePolyDefinition>,
 }
@@ -112,7 +121,7 @@ impl AssetCollection for StageManifestAssets {
     }
 }
 
-#[derive(Resource)]
+#[derive(Resource, Deref)]
 pub struct StageManifestRegistry(HashMap<StageId, Handle<StageManifest>>);
 
 impl StageManifestRegistry {
@@ -173,7 +182,7 @@ pub fn prepare_stage_manifests(
     }
 
     commands.insert_resource(StageManifestRegistry(registry));
-    next_state.set(AppState::MainMenu);
+    next_state.set(AppState::PreMainMenu);
 }
 
 impl StageManifest {

src/stage/mod.rs

@@ -5,12 +5,12 @@ use bevy::prelude::*;
 
 pub mod debug;
 pub mod line;
-pub mod scene;
 pub mod manifest;
+pub mod scene;
 
 pub use line::{StagePlaneIntersectResult, StagePoly};
 
-use crate::{stage::{line::StageCollision, manifest::StageCameraProfile}};
+use crate::stage::{line::StageCollision, manifest::StageCameraProfile};
 
 /// Owns the stage geometry: which scene gets spawned and how it is drawn.
 #[derive(Default)]

src/stage/scene.rs

@@ -4,9 +4,7 @@ use std::f32::consts::PI;
 
 use bevy::prelude::*;
 
-use crate::{
+use crate::{camera::MatchCamera, stage::line::StageCollision};
-    camera::MatchCamera, stage::line::StageCollision,
-};
 
 pub fn spawn_stage_support(
     commands: &mut Commands,