Add authoritative fighter surface state

src/debug_tools.rs

@@ -3,9 +3,11 @@
 use std::{collections::HashMap, time::Duration};
 
 use bevy::{
-    camera::{CameraOutputMode, visibility::RenderLayers}, input::InputSystems, prelude::*, render::render_resource::BlendState, settings::{ReflectSettingsGroup, SaveSettingsDeferred, SettingsGroup},
+    input::InputSystems,
+    prelude::*,
+    settings::{ReflectSettingsGroup, SaveSettingsDeferred, SettingsGroup},
 };
-use bevy_egui::{EguiContexts, EguiGlobalSettings, EguiPrimaryContextPass, PrimaryEguiContext, egui};
+use bevy_egui::{EguiContexts, EguiPrimaryContextPass, egui};
 use bevy_ggrs::{RollbackFrameRate, RunGgrsSystems};
 use enum_cycling::EnumCycle;
 use enum_cycling_derive::EnumCycle;
@@ -395,7 +397,6 @@ impl Plugin for DebugToolsPlugin {
                     .before(RunGgrsSystems)
                     .run_if(in_state(AppState::InMatch)),
             )
-            .add_systems(Startup, spawn_egui_camera)
             .add_systems(PreUpdate, restore_frame_step_time.after(RunGgrsSystems))
             .add_systems(
                 Update,
@@ -407,26 +408,6 @@ impl Plugin for DebugToolsPlugin {
     }
 }
 
-pub fn spawn_egui_camera(mut commands: Commands, mut egui_global_settings: ResMut<EguiGlobalSettings>,) {
-    egui_global_settings.auto_create_primary_context = false;
-    commands.spawn((
-        // The `PrimaryEguiContext` component requires everything needed to render a primary context.
-        PrimaryEguiContext,
-        Camera2d,
-        // Setting RenderLayers to none makes sure we won't render anything apart from the UI.
-        RenderLayers::none(),
-        Camera {
-            order: 2,
-            output_mode: CameraOutputMode::Write {
-                blend_state: Some(BlendState::ALPHA_BLENDING),
-                clear_color: ClearColorConfig::None,
-            },
-            clear_color: ClearColorConfig::Custom(Color::NONE),
-            ..default()
-        },
-    ));
-}
-
 fn player_handles(players: &Query<&Player>) -> Vec<usize> {
     let mut handles = players
         .iter()

src/fighter/animation.rs

@@ -84,9 +84,6 @@ pub enum AnimKind {
     AirDodge,
     Fall,
     Turn,
-    CrouchEnter,
-    CrouchIdle,
-    CrouchExit,
 
     FlinchGround,
     FlinchAir,

src/fighter/attack/mod.rs

@@ -605,6 +605,7 @@ impl Plugin for FighterAttackPlugin {
                 intersect_attacks_with_hurtboxes,
             )
                 .chain()
+                .after(crate::fighter::baked_animation::update_fighter_bone_matrices)
                 .in_set(GameplaySet::Attacks),
         );
     }

src/fighter/baked_animation/mod.rs

@@ -219,7 +219,6 @@ mod tests {
         second.translate(FGVec3::lit("0", "3", "0"));
         let mut matrices = FighterBoneMatrices::default();
         matrices.set_pose(
-            AnimKind::Wait,
             &["root".into(), "hand".into()],
             &[None, Some(0)],
             &[first, second],
@@ -240,7 +239,6 @@ mod tests {
         hand.translate(FGVec3::lit("0", "3", "0"));
         let mut matrices = FighterBoneMatrices::default();
         matrices.set_pose(
-            AnimKind::Wait,
             &["root".into(), "hand".into()],
             &[None, Some(0)],
             &[root, hand],
@@ -268,9 +266,9 @@ mod tests {
         let parents = [None, Some(0)];
         let pose = [FixedMat4::IDENTITY, FixedMat4::IDENTITY];
 
-        matrices.set_pose(AnimKind::Wait, &names, &parents, &pose, FGi32::ONE);
+        matrices.set_pose(&names, &parents, &pose, FGi32::ONE);
         let capacities = matrices.buffer_capacities();
-        matrices.set_pose(AnimKind::Wait, &names, &parents, &pose, FGi32::ONE);
+        matrices.set_pose(&names, &parents, &pose, FGi32::ONE);
 
         assert_eq!(capacities, matrices.buffer_capacities());
     }
@@ -283,7 +281,6 @@ mod tests {
         hand.translate(FGVec3::lit("0", "2", "0"));
         let mut matrices = FighterBoneMatrices::default();
         matrices.set_pose(
-            AnimKind::Wait,
             &["root".into(), "hand".into()],
             &[None, Some(0)],
             &[root, hand],

src/fighter/baked_animation/runtime.rs

@@ -71,7 +71,6 @@ pub struct FighterBoneMatrices {
     local_matrices: Vec<FixedMat4>,
     previous_local_matrices: Vec<FixedMat4>,
     model_matrices: Vec<Option<FixedMat4>>,
-    presentation_kind: Option<AnimKind>,
 }
 
 #[derive(Component, Clone, Debug, Default)]
@@ -89,12 +88,6 @@ impl FighterBoneMatrices {
         ]
     }
 
-    pub fn get_by_idx(&self, index: usize) -> Option<(FixedMat4, FixedMat4)> {
-        Some((
-            *self.previous_frame_matrices.get(index)?,
-            *self.matrices.get(index)?,
-        ))
-    }
     pub fn get(&self, bone: &str) -> Option<(FixedMat4, FixedMat4)> {
         let index = self.bone_names.iter().position(|name| name == bone)?;
         Some((
@@ -139,7 +132,6 @@ impl FighterBoneMatrices {
     }
     pub(super) fn set_pose(
         &mut self,
-        kind: AnimKind,
         bone_names: &[String],
         parents: &[Option<usize>],
         local: &[FixedMat4],
@@ -168,7 +160,6 @@ impl FighterBoneMatrices {
         self.previous_local_matrices.reserve(local.len());
         self.model_matrices.reserve(local.len());
         std::mem::swap(&mut self.matrices, &mut self.previous_frame_matrices);
-        let animation_changed = self.presentation_kind != Some(kind);
         std::mem::swap(&mut self.local_matrices, &mut self.previous_local_matrices);
         self.local_matrices.clear();
         self.local_matrices.extend_from_slice(local);
@@ -192,14 +183,6 @@ impl FighterBoneMatrices {
                 model_scale.mul(matrix.expect("baked bone hierarchy should be valid"))
             }),
         );
-        // A state transition is a discontinuity, not an animation frame to
-        // interpolate from the previous clip.  Keep the presentation pose at
-        // the new clip's first/current frame immediately.
-        if animation_changed {
-            self.previous_local_matrices
-                .clone_from(&self.local_matrices);
-        }
-        self.presentation_kind = Some(kind);
     }
 }
 
@@ -229,7 +212,6 @@ pub fn update_fighter_bone_matrices(
             .get(&fighter.manifest)
             .expect("fighter manifest should be loaded before the match starts");
         matrices.set_pose(
-            frame.kind,
             &baked.bone_names,
             &baked.parents,
             pose,

src/fighter/debug.rs

@@ -27,7 +27,6 @@ use crate::game_settings::GameSettings;
 use crate::input::FighterInput;
 use crate::math::int::FGi32;
 use crate::math::vec::FGVec2;
-use crate::math::vec3::FGVec3;
 use crate::player::Player;
 
 pub fn debug_draw_ecb(
@@ -40,12 +39,6 @@ pub fn debug_draw_ecb(
     mut gizmos: Gizmos,
 ) {
     for (ecb, trf, ecb_prev, trf_prev) in ecbs {
-        gizmos.cross(
-            FGVec3::new(trf.0.x, trf.0.y, FGi32::ZERO).to_vec3(),
-            2.0,
-            bevy::color::palettes::css::BLUE,
-        );
-
         let transformed =
             ecb.to_3d_lineloop(Transform::from_xyz(trf.x.to_num(), trf.y.to_num(), 0.0));
         gizmos.lineloop(transformed, YELLOW);
@@ -160,17 +153,10 @@ pub fn fighter_debug(
     Ok(())
 }
 
-pub fn animation_debug(
+pub fn animation_debug(query: Query<(&GlobalTransform, &FighterBoneMatrices)>, mut gizmos: Gizmos) {
-    query: Query<(
+    for (global_transform, matrices) in query {
-        &FighterTranslation,
+        let (_, rotation, translation) = global_transform.to_scale_rotation_translation();
-        &FighterFacingDirection,
+        let marker_transform = Transform::from_translation(translation).with_rotation(rotation);
-        &FighterBoneMatrices,
-    )>,
-    mut gizmos: Gizmos,
-) {
-    for (global_transform, facing_dir, matrices) in query {
-        let global_transform = global_transform.get_3d_transform(facing_dir);
-        let marker_transform = global_transform.to_mat4();
         for (_, matrix) in matrices.iter() {
             let pos = marker_transform.transform_point(Vec3::new(
                 matrix.cols[3][0].to_num(),

src/fighter/ecb.rs

@@ -1,44 +1,28 @@
 use bevy::prelude::*;
 
-use crate::{
+use crate::math::{int::FGi32, vec::FGVec2};
-    fighter::{
-        FighterFacingDirection, FighterSurfaceState, FighterTranslation,
-        baked_animation::FighterBoneMatrices,
-    }, math::{int::FGi32, vec::FGVec2},
-};
 
 /// Environment collision box: the diamond used to resolve a fighter against
 /// the stage. Purely geometry — the collision response lives in
 /// [`super::collision`].
-#[derive(Component, Debug, Clone, Copy, Hash, Default)]
+#[derive(Component, Debug, Clone, Copy, Hash)]
 #[require(FighterPreviousECB)]
 pub struct FighterECB {
-    pub top: FGVec2,
+    pub vertical_half: FGi32,
-    pub bottom: FGVec2,
+    pub horizontal_half: FGi32,
-    pub left: FGVec2,
-    pub right: FGVec2,
-}
-
-#[derive(Component, Debug, Clone)]
-pub struct FighterECBBoneIndices {
-    pub indices: Vec<usize>,
 }
 
 #[derive(Component, Debug, Clone, Copy, Default, Hash)]
 pub struct FighterPreviousECB {
-    pub top: FGVec2,
+    pub vertical_half: FGi32,
-    pub bottom: FGVec2,
+    pub horizontal_half: FGi32,
-    pub left: FGVec2,
-    pub right: FGVec2,
 }
 
 impl From<FighterECB> for FighterPreviousECB {
     fn from(ecb: FighterECB) -> Self {
         Self {
-            top: ecb.top,
+            vertical_half: ecb.vertical_half,
-            bottom: ecb.bottom,
+            horizontal_half: ecb.horizontal_half,
-            left: ecb.left,
-            right: ecb.right,
         }
     }
 }
@@ -51,84 +35,53 @@ pub fn snapshot_fighter_ecb(fighters: Query<(&FighterECB, &mut FighterPreviousEC
 
 impl FighterECB {
     pub fn to_3d_lineloop(&self, trf: Transform) -> [Vec3; 4] {
-        [self.top, self.right, self.bottom, self.left]
+        let rel_up = trf.transform_point(Vec3::new(
-            .map(|point| trf.transform_point(Vec3::new(point.x.to_num(), point.y.to_num(), 0.0)))
+            0.0,
+            (self.vertical_half + self.vertical_half).to_num(),
+            0.0,
+        ));
+        let rel_down = trf.transform_point(Vec3::new(0.0, 0.0, 0.0));
+        let rel_left = trf.transform_point(Vec3::new(
+            (-self.horizontal_half).to_num(),
+            self.vertical_half.to_num(),
+            0.0,
+        ));
+        let rel_right = trf.transform_point(Vec3::new(
+            self.horizontal_half.to_num(),
+            self.vertical_half.to_num(),
+            0.0,
+        ));
+        [rel_up, rel_right, rel_down, rel_left]
     }
 
     pub fn get_bottom_point(&self) -> FGVec2 {
-        self.bottom
+        FGVec2::new(FGi32::ZERO, FGi32::ZERO)
     }
 }
 
 impl FighterPreviousECB {
     pub fn to_3d_lineloop(&self, trf: Transform) -> [Vec3; 4] {
-        [self.top, self.right, self.bottom, self.left]
+        let rel_up = trf.transform_point(Vec3::new(
-            .map(|point| trf.transform_point(Vec3::new(point.x.to_num(), point.y.to_num(), 0.0)))
+            0.0,
+            (self.vertical_half + self.vertical_half).to_num(),
+            0.0,
+        ));
+        let rel_down = trf.transform_point(Vec3::new(0.0, 0.0, 0.0));
+        let rel_left = trf.transform_point(Vec3::new(
+            (-self.horizontal_half).to_num(),
+            self.vertical_half.to_num(),
+            0.0,
+        ));
+        let rel_right = trf.transform_point(Vec3::new(
+            self.horizontal_half.to_num(),
+            self.vertical_half.to_num(),
+            0.0,
+        ));
+        [rel_up, rel_right, rel_down, rel_left]
     }
 
     pub fn get_bottom_point(&self) -> FGVec2 {
-        self.bottom
+        FGVec2::new(FGi32::ZERO, FGi32::ZERO)
-    }
-}
-
-pub fn update_ecb(
-    query: Query<(
-        &mut FighterECB,
-        &FighterSurfaceState,
-        &FighterECBBoneIndices,
-        &FighterBoneMatrices,
-        &FighterTranslation,
-        &FighterFacingDirection,
-    )>,
-) {
-    for (mut ecb, surface_state, bone_indices, bone_matrices, translation, facing_dir) in query {
-        let trf = translation.get_3d_transform(facing_dir);
-
-        let transformed_ecb_bones = bone_indices.indices.iter().filter_map(|idx| {
-            let Some((_, bone_matrix)) = bone_matrices.get_by_idx(*idx) else {
-                return None;
-            };
-
-            let pt = trf.transform_point(bone_matrix.get_translation());
-
-            Some(FGVec2::new(pt.x, pt.y) - translation.0)
-        }).collect::<Vec<_>>();
-
-        let max_x = transformed_ecb_bones.iter().max_by(|a, b| a.x.cmp(&b.x)).map(|final_val| final_val.x).unwrap_or(FGi32::lit("0.5"));
-        let min_x = transformed_ecb_bones.iter().min_by(|a, b| a.x.cmp(&b.x)).map(|final_val| final_val.x).unwrap_or(FGi32::lit("-0.5"));
-        let max_y = transformed_ecb_bones.iter().max_by(|a, b| a.y.cmp(&b.y)).map(|final_val| final_val.y).unwrap_or(FGi32::lit("0.5"));
-        let min_y = transformed_ecb_bones.iter().min_by(|a, b| a.y.cmp(&b.y)).map(|final_val| final_val.y).unwrap_or(FGi32::lit("-0.5"));
-
-        let midpoint_height = (max_y + min_y) / FGi32::lit("2.0");
-        let top = FGVec2::new(FGi32::ZERO, max_y);
-        let bottom = FGVec2::new(FGi32::ZERO, min_y);
-        let left = FGVec2::new(min_x, midpoint_height);
-        let right = FGVec2::new(max_x, midpoint_height);
-
-        let ecb_lock_frames_remaining = if let FighterSurfaceState::Airborne { ecb_lock_frames_remaining } = *surface_state {
-            ecb_lock_frames_remaining
-        } else {
-            0
-        };
-
-        ecb.top = top;
-
-        if ecb_lock_frames_remaining == 0 {
-            ecb.bottom = bottom;
-        }
-
-        ecb.left = left;
-        ecb.right = right;
-
-        if surface_state.is_grounded() {
-            ecb.bottom = FGVec2::ZERO;
-        }
-    }
-}
-
-pub fn decrement_ecb_lockout(surface_states: Query<&mut FighterSurfaceState>) {
-    for mut state in surface_states {
-        state.tick_ecb_lock();
     }
 }
 
@@ -139,16 +92,12 @@ mod tests {
     #[test]
     fn previous_ecb_copies_current_dimensions() {
         let current = FighterECB {
-            bottom: FGVec2::lit("0.0", "-0.5"),
+            vertical_half: FGi32::lit("0.5"),
-            top: FGVec2::lit("0.0", "0.5"),
+            horizontal_half: FGi32::lit("0.25"),
-            left: FGVec2::lit("-0.5", "0.0"),
-            right: FGVec2::lit("0.5", "0.0"),
         };
         let previous = FighterPreviousECB::from(current);
 
-        assert_eq!(previous.top, current.top);
+        assert_eq!(previous.vertical_half, current.vertical_half);
-        assert_eq!(previous.bottom, current.bottom);
+        assert_eq!(previous.horizontal_half, current.horizontal_half);
-        assert_eq!(previous.left, current.left);
-        assert_eq!(previous.right, current.right);
     }
 }

src/fighter/manifest.rs

@@ -65,7 +65,6 @@ pub struct FighterManifest {
     pub animations: HashMap<AnimKind, String>,
     pub attack_scripts: HashMap<AttackKind, String>,
     pub hurtboxes: Vec<FighterHurtbox>,
-    pub ecb_bones: Vec<String>,
 }
 
 #[derive(Resource)]

src/fighter/mod.rs

@@ -34,13 +34,24 @@ pub use motion::{
 pub use surface::FighterSurfaceState;
 
 use crate::{
-    AppState, fighter::{
+    AppState,
+    fighter::{
         attack::{
             AttackKind, FighterAttackPlugin, FighterAttackScriptAssets, FighterDamage,
             FighterKnockbackVelocity, FighterPendingHitReaction, FighterSolvedHurtboxes,
             FighterStaleMoveQueue,
-        }, baked_animation::{FighterBoneIndexMap, FighterBoneMatrices}, ecb::FighterECBBoneIndices, manifest::FighterManifest, state::{FighterState, air::AirborneStateCommon, fall::FallState}, visual::FighterAnimations,
+        },
-    }, input::FighterInput, math::{int::FGi32, vec::FGVec2}, player::Player, schedule::GameplaySet, scripting::FighterAttackScript, stage::line::StageCollision,
+        baked_animation::{FighterBoneIndexMap, FighterBoneMatrices},
+        manifest::FighterManifest,
+        state::{FighterState, air::AirborneStateCommon, fall::FallState},
+        visual::FighterAnimations,
+    },
+    input::FighterInput,
+    math::{int::FGi32, vec::FGVec2},
+    player::Player,
+    schedule::GameplaySet,
+    scripting::FighterAttackScript,
+    stage::line::StageCollision,
 };
 use state::state_interrupt_system;
 
@@ -171,15 +182,10 @@ impl Plugin for FighterPlugin {
             )*/
             .add_systems(
                 GgrsSchedule,
-                (
+                state::state_collision_interrupt_system.in_set(GameplaySet::Collision),
-                    (ecb::update_ecb, ecb::decrement_ecb_lockout, state::state_collision_interrupt_system).chain(),
-                    baked_animation::update_fighter_bone_matrices,
-                )
-                    .chain()
-                    .in_set(GameplaySet::Collision),
             )
             .add_systems(
-                PostUpdate,
+                Update,
                 (
                     motion::apply_fighter_translation_to_visuals,
                     animation::apply_animation,
@@ -280,7 +286,6 @@ pub fn spawn_fighter(
     animations: FighterAnimations,
     attack_scripts: FighterAttackScriptAssets,
     visual_root: WorldAssetRoot,
-    ecb_bone_indices: Vec<usize>,
 ) -> Entity {
     commands
         .spawn((
@@ -291,14 +296,14 @@ pub fn spawn_fighter(
             Fighter { manifest: manifest },
             FighterFacingDirection::Right,
             FighterPreviousFacingDirection(FighterFacingDirection::Right),
-            FighterSurfaceState::default(),
+            FighterSurfaceState::Airborne,
             Transform::from_scale(Vec3::splat(model_scale.to_num())),
             (
-                FighterECB::default(),
+                FighterECB {
+                    vertical_half: FGi32::lit("5.0"),
+                    horizontal_half: FGi32::lit("2.5"),
+                },
                 FighterHitboxes::default(),
-                FighterECBBoneIndices {
-                    indices: ecb_bone_indices
-                }
             ),
             (
                 FighterVelocity::default(),

src/fighter/motion.rs

@@ -8,7 +8,7 @@ use crate::debug_tools::PresentationMotionMode;
 use crate::fighter::FighterHitstopShake;
 use crate::game_settings::GameSettings;
 use crate::{
-    fighter::{FighterFacingDirection, baked_animation::FixedMat4},
+    fighter::{FighterECB, FighterFacingDirection, baked_animation::FixedMat4},
     math::{int::FGi32, vec::FGVec2, vec3::FGVec3},
 };
 
@@ -56,6 +56,7 @@ pub fn apply_fighter_translation_to_visuals(
     query: Query<(
         &FighterTranslation,
         &FighterPreviousTranslation,
+        &FighterECB,
         &FighterHitstopShake,
         &mut Transform,
     )>,
@@ -64,16 +65,17 @@ pub fn apply_fighter_translation_to_visuals(
     game_settings: Res<GameSettings>,
 ) {
     let overstep_fraction = timing.overstep_fraction();
-    for (translation, previous_translation, hitstop_shake, mut transform) in query {
+    for (translation, previous_translation, ecb, hitstop_shake, mut transform) in query {
         let translation = sample_presentation_translation(
             *previous_translation,
             *translation,
             overstep_fraction,
             debug_settings.motion_sampling,
         );
+        let bottom = ecb.get_bottom_point();
         transform.translation = Vec3::new(
-            translation.x,
+            translation.x + bottom.x.to_num::<f32>(),
-            translation.y,
+            translation.y + bottom.y.to_num::<f32>(),
             0.0,
         );
 

src/fighter/state/air.rs

@@ -83,7 +83,9 @@ pub fn apply_air_motion(
     velocity: &FighterVelocity,
     translation: &mut FighterTranslation,
     prev_translation: &mut FighterPreviousTranslation,
+    surface: &mut FighterSurfaceState,
 ) {
+    surface.leave_ground();
     // Vertical velocity should be 0 on the ground
     prev_translation.0 = translation.0;
     translation.0 += velocity.0;
@@ -109,6 +111,7 @@ pub fn update_standard_motion(
         ctx.velocity,
         ctx.translation,
         ctx.prev_translation,
+        ctx.surface,
     );
 }
 
@@ -117,12 +120,7 @@ pub fn collision_interrupt(
     landing_type: LandingType,
 ) -> Option<FighterState> {
     let res = ctx.air_collide_with_stage()?;
-    let diff = res.hit_position - ctx.translation.0;
+    ctx.translation.0 = res.hit_position - ctx.ecb.get_bottom_point();
-    ctx.ecb.bottom -= diff;
-    ctx.ecb.top -= diff;
-    ctx.ecb.left -= diff;
-    ctx.ecb.right -= diff;
-    ctx.translation.0 = res.hit_position;
     ctx.surface.land(res.line_id);
     Some(FighterState::Land(LandingState::create(landing_type)))
 }

src/fighter/state/air_dodge.rs

@@ -38,6 +38,7 @@ impl FighterStateImpl for AirDodgeState {
             state_context.velocity,
             state_context.translation,
             state_context.prev_translation,
+            state_context.surface,
         );
     }
 
@@ -58,10 +59,6 @@ impl FighterStateImpl for AirDodgeState {
     fn is_visually_grounded<'a>(&'a self) -> bool {
         false
     }
-
-    fn surface_policy(&self) -> super::SurfacePolicy {
-        super::SurfacePolicy::Airborne(crate::fighter::surface::EcbLockPolicy::StartOnDetach)
-    }
 }
 
 pub fn check_input(state_context: &InterruptContext) -> Option<FighterState> {

src/fighter/state/crouch.rs

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

src/fighter/state/fall.rs

@@ -46,8 +46,5 @@ impl FighterStateImpl for FallState {
     ) -> bool {
         false
     }
+}
 
-    fn surface_policy(&self) -> super::SurfacePolicy {
-        super::SurfacePolicy::Airborne(crate::fighter::surface::EcbLockPolicy::StartOnDetach)
-    }
-}

src/fighter/state/ground.rs

@@ -3,7 +3,8 @@
 //! bit-for-bit deterministic for rollback.
 
 use crate::fighter::state::{
-    CollisionContext, FighterState, InterruptContext, air, crouch, dash, fall, ground_attack, turn, wait, walk,
+    CollisionContext, FighterState, InterruptContext, air, dash, fall, ground_attack, turn, wait,
+    walk,
 };
 use crate::fighter::{
     FighterAttributes, FighterPreviousTranslation, FighterTranslation, FighterVelocity,
@@ -177,7 +178,7 @@ pub fn collide_with_stage_grounded(
     can_walk_off: bool,
 ) -> GroundedMotionResult {
     let translation = &mut state_context.translation;
-    let ecb = &state_context.ecb;
+    let ecb = state_context.ecb;
     let stage_collision = state_context.stage_collision;
 
     let Some(current_line_id) = state_context.surface.line_id() else {
@@ -217,18 +218,12 @@ pub fn collide_with_stage_grounded(
                 GroundedMotionResult::InGround
             }
             GroundedPositionResult::InAir => {
-                state_context.surface.apply_airborne_policy(
+                state_context.surface.leave_ground();
-                    crate::fighter::surface::EcbLockPolicy::StartOnDetach,
-                    state_context.leave_ground_ecb_lock_duration,
-                );
                 GroundedMotionResult::InAir
             }
         }
     } else {
-        state_context.surface.apply_airborne_policy(
+        state_context.surface.leave_ground();
-            crate::fighter::surface::EcbLockPolicy::StartOnDetach,
-            state_context.leave_ground_ecb_lock_duration,
-        );
         GroundedMotionResult::InAir
     }
 }
@@ -368,11 +363,9 @@ mod tests {
         let mut translation = FighterTranslation(FGVec2::lit("11", "0"));
         let previous_translation = FighterPreviousTranslation(translation.0);
         let mut velocity = FighterVelocity::default();
-        let mut ecb = FighterECB {
+        let ecb = FighterECB {
-            bottom: FGVec2::lit("0.0", "-0.5"),
+            vertical_half: FGi32::ONE,
-            top: FGVec2::lit("0.0", "0.5"),
+            horizontal_half: FGi32::ONE,
-            left: FGVec2::lit("-0.5", "0.0"),
-            right: FGVec2::lit("0.5", "0.0"),
         };
         let previous_ecb = FighterPreviousECB::from(ecb);
         let mut context = CollisionContext {
@@ -380,10 +373,9 @@ mod tests {
             prev_translation: &previous_translation,
             velocity: &mut velocity,
             surface: &mut surface,
-            ecb: &mut ecb,
+            ecb: &ecb,
             prev_ecb: &previous_ecb,
             stage_collision: &stage_collision,
-            leave_ground_ecb_lock_duration: 10,
         };
 
         assert!(matches!(
@@ -419,11 +411,9 @@ mod tests {
         let mut translation = FighterTranslation(FGVec2::lit("11", "0"));
         let previous_translation = FighterPreviousTranslation(translation.0);
         let mut velocity = FighterVelocity::default();
-        let mut ecb = FighterECB {
+        let ecb = FighterECB {
-            bottom: FGVec2::lit("0.0", "-0.5"),
+            vertical_half: FGi32::ONE,
-            top: FGVec2::lit("0.0", "0.5"),
+            horizontal_half: FGi32::ONE,
-            left: FGVec2::lit("-0.5", "0.0"),
-            right: FGVec2::lit("0.5", "0.0"),
         };
         let previous_ecb = FighterPreviousECB::from(ecb);
         let mut context = CollisionContext {
@@ -431,17 +421,16 @@ mod tests {
             prev_translation: &previous_translation,
             velocity: &mut velocity,
             surface: &mut surface,
-            ecb: &mut ecb,
+            ecb: &ecb,
             prev_ecb: &previous_ecb,
             stage_collision: &stage_collision,
-            leave_ground_ecb_lock_duration: 10,
         };
 
         assert!(matches!(
             collide_with_stage_grounded(&mut context, true),
             GroundedMotionResult::InAir
         ));
-        assert!(matches!(surface, FighterSurfaceState::Airborne { .. }));
+        assert_eq!(surface, FighterSurfaceState::Airborne);
     }
 }
 
@@ -460,8 +449,6 @@ pub fn grounded_movement_standstill_common_interrupts(
         Some(state)
     } else if let Some(state) = turn::check_input(state_context) {
         Some(state)
-    } else if let Some(state) = crouch::check_input(state_context) {
-        Some(state)
     } else if let Some(state) = walk::check_input(state_context) {
         Some(state)
     } else if let Some(state) = wait::check_input(state_context) {

src/fighter/state/hitstun.rs

@@ -83,6 +83,7 @@ impl FighterStateImpl for HitstunState {
         match self.hitstop_kind {
             HitstopStateKind::Grounded => {}
             HitstopStateKind::Airborne => {
+                ctx.surface.leave_ground();
                 air::integrate_gravity(ctx.velocity, ctx.fighter_attributes, false);
             }
         }
@@ -125,13 +126,4 @@ impl FighterStateImpl for HitstunState {
             HitstopStateKind::Airborne => false,
         }
     }
-
-    fn surface_policy(&self) -> super::SurfacePolicy {
-        match self.hitstop_kind {
-            HitstopStateKind::Grounded => super::SurfacePolicy::Grounded,
-            HitstopStateKind::Airborne => super::SurfacePolicy::Airborne(
-                crate::fighter::surface::EcbLockPolicy::StartOnDetach,
-            ),
-        }
-    }
 }

src/fighter/state/jump.rs

@@ -186,16 +186,6 @@ impl FighterStateImpl for JumpState {
     fn is_visually_grounded<'a>(&'a self) -> bool {
         false
     }
-
-    fn surface_policy(&self) -> super::SurfacePolicy {
-        use crate::fighter::surface::EcbLockPolicy;
-        match self.jump_type {
-            JumpType::DoubleJump => super::SurfacePolicy::Airborne(EcbLockPolicy::Restart),
-            JumpType::ShortHop | JumpType::LongJump => {
-                super::SurfacePolicy::Airborne(EcbLockPolicy::StartOnDetach)
-            }
-        }
-    }
 }
 
 pub fn check_input(state_context: &InterruptContext) -> Option<FighterState> {

src/fighter/state/mod.rs

@@ -21,7 +21,6 @@ use crate::fighter::{
     FighterHitstopShake, FighterHitstopShakeKind, FighterHitstopShakeRole,
     FighterPreviousTranslation, FighterSurfaceState, FighterTranslation, FighterVelocity,
 };
-use crate::fighter::surface::EcbLockPolicy;
 use crate::game_settings::GameSettings;
 use crate::input::FighterInput;
 use crate::math::int::FGi32;
@@ -41,13 +40,6 @@ pub mod run;
 pub mod turn;
 pub mod wait;
 pub mod walk;
-pub mod crouch;
-
-#[derive(Clone, Copy, Debug, Hash, PartialEq, Eq)]
-pub enum SurfacePolicy {
-    Grounded,
-    Airborne(EcbLockPolicy),
-}
 
 macro_rules! fighter_states {
     ($($variant:ident => $ty:ty),* $(,)?) => {
@@ -80,10 +72,6 @@ macro_rules! fighter_states {
             pub fn is_visually_grounded(&self) -> bool {
                 match self { $(Self::$variant(s) => s.is_visually_grounded()),* }
             }
-
-            pub fn surface_policy(&self) -> SurfacePolicy {
-                match self { $(Self::$variant(s) => s.surface_policy()),* }
-            }
         }
 
         $(impl From<$ty> for FighterState {
@@ -111,10 +99,6 @@ pub trait FighterStateImpl: Sized {
     }
 
     fn is_visually_grounded<'a>(&'a self) -> bool;
-
-    fn surface_policy(&self) -> SurfacePolicy {
-        SurfacePolicy::Grounded
-    }
 }
 
 pub struct AnimationStatus {
@@ -189,10 +173,9 @@ pub struct CollisionContext<'a> {
     pub prev_translation: &'a FighterPreviousTranslation,
     pub velocity: &'a mut FighterVelocity,
     pub surface: &'a mut FighterSurfaceState,
-    pub ecb: &'a mut FighterECB,
+    pub ecb: &'a FighterECB,
     pub prev_ecb: &'a FighterPreviousECB,
     pub stage_collision: &'a StageCollision,
-    pub leave_ground_ecb_lock_duration: u32,
 }
 
 impl CollisionContext<'_> {
@@ -212,7 +195,6 @@ impl CollisionContext<'_> {
 fighter_states! {
     Wait => wait::WaitState,
     Walk => walk::WalkState,
-    Crouch => crouch::CrouchState,
     Dash => dash::DashState,
     Run => run::RunState,
     Fall => fall::FallState,
@@ -236,7 +218,7 @@ pub struct FighterFrameQuery {
     pub surface: &'static mut FighterSurfaceState,
     pub knockback_velocity: &'static mut FighterKnockbackVelocity,
     pub stale_move_queue: &'static mut FighterStaleMoveQueue,
-    pub ecb: &'static mut FighterECB,
+    pub ecb: &'static FighterECB,
     pub prev_ecb: &'static FighterPreviousECB,
     pub facing_direction: &'static mut FighterFacingDirection,
     pub animation_frame: &'static mut FighterAnimationFrame,
@@ -328,17 +310,15 @@ impl<'w, 's> FighterFrameQueryItem<'w, 's> {
     fn collision_context<'a>(
         &'a mut self,
         stage_collision: &'a StageCollision,
-        game_settings: &'a GameSettings,
     ) -> CollisionContext<'a> {
         CollisionContext {
             translation: &mut self.translation,
             prev_translation: &self.prev_translation,
             velocity: &mut self.velocity,
             surface: &mut self.surface,
-            ecb: &mut self.ecb,
+            ecb: &self.ecb,
             prev_ecb: &self.prev_ecb,
             stage_collision,
-            leave_ground_ecb_lock_duration: game_settings.fighter_common.leave_ground_ecb_frame_lock_duration
         }
     }
 }
@@ -393,18 +373,11 @@ fn transition_state(
     frame: &mut FighterFrameQueryItem,
     attributes: &FighterAttributes,
     attack_script_assets: &FighterAttackScriptAssets,
-    game_settings: &GameSettings,
 ) {
     let old_name = current.name();
     let new_name = next.name();
 
     current.on_exit(&mut frame.exit_context());
-    if let SurfacePolicy::Airborne(lock_policy) = next.surface_policy() {
-        frame.surface.apply_airborne_policy(
-            lock_policy,
-            game_settings.fighter_common.leave_ground_ecb_frame_lock_duration,
-        );
-    }
     next.on_enter(&mut frame.enter_context(attributes, attack_script_assets));
     *current = next;
     info!("{} -> {}", old_name, new_name);
@@ -475,6 +448,10 @@ pub fn state_interrupt_system(
                 }
             }
 
+            if matches!(hitstop_kind, hitstun::HitstopStateKind::Airborne) {
+                frame.surface.leave_ground();
+            }
+
             info!("Entering hitstop kind: {:?}", hitstop_kind);
             Some(FighterState::Hitstun(HitstunState::new(
                 reaction,
@@ -498,7 +475,6 @@ pub fn state_interrupt_system(
                 &mut frame,
                 &manifest.attributes,
                 attack_script_assets,
-                &game_settings,
             );
         };
     }
@@ -508,7 +484,6 @@ pub fn state_collision_interrupt_system(
     mut query: Query<StatefulFighterQuery>,
     stage_collision: Res<StageCollision>,
     fighter_manifests: Res<Assets<FighterManifest>>,
-    game_settings: Res<GameSettings>,
 ) {
     for fighter in &mut query {
         let StatefulFighterQueryItem {
@@ -527,7 +502,7 @@ pub fn state_collision_interrupt_system(
             .get(&fighter.manifest)
             .expect("Fighter manifest should be valid");
         let new_state =
-            state.check_collision_interrupt(&mut frame.collision_context(&stage_collision, &game_settings));
+            state.check_collision_interrupt(&mut frame.collision_context(&stage_collision));
         if let Some(new_state) = new_state {
             transition_state(
                 &mut state,
@@ -535,7 +510,6 @@ pub fn state_collision_interrupt_system(
                 &mut frame,
                 &manifest.attributes,
                 &attack_script_assets,
-                &game_settings,
             );
         }
     }

src/fighter/surface.rs

@@ -1,38 +1,21 @@
 use bevy::prelude::*;
 
-use crate::{stage::line::StageLineID};
+use crate::stage::line::StageLineID;
-
-#[derive(Clone, Copy, Debug, Hash, PartialEq, Eq)]
-pub enum EcbLockPolicy {
-    StartOnDetach,
-    Restart,
-    Preserve,
-    Clear,
-}
 
 /// The stage surface currently supporting a fighter.
 ///
 /// This is physics state rather than fighter-state-machine state. Keeping it
 /// separate means grounded, landing, and hitstun states all share one source
 /// of truth for stage contact.
-#[derive(Component, Clone, Copy, Debug, Hash, PartialEq, Eq)]
+#[derive(Component, Clone, Copy, Debug, Default, Hash, PartialEq, Eq)]
 pub enum FighterSurfaceState {
-    Airborne {
+    #[default]
-        ecb_lock_frames_remaining: u32
+    Airborne,
-    },
     Grounded {
         line_id: StageLineID,
     },
 }
 
-impl Default for FighterSurfaceState {
-    fn default() -> Self {
-        Self::Airborne {
-            ecb_lock_frames_remaining: 0
-        }
-    }
-}
-
 impl FighterSurfaceState {
     pub fn is_grounded(self) -> bool {
         matches!(self, Self::Grounded { .. })
@@ -40,7 +23,7 @@ impl FighterSurfaceState {
 
     pub fn line_id(self) -> Option<StageLineID> {
         match self {
-            Self::Airborne { .. } => None,
+            Self::Airborne => None,
             Self::Grounded { line_id } => Some(line_id),
         }
     }
@@ -49,29 +32,8 @@ impl FighterSurfaceState {
         *self = Self::Grounded { line_id };
     }
 
-    pub(crate) fn apply_airborne_policy(
+    pub(crate) fn leave_ground(&mut self) {
-        &mut self,
+        *self = Self::Airborne;
-        policy: EcbLockPolicy,
-        ecb_lock_duration: u32,
-    ) {
-        let current_lock = match *self {
-            Self::Airborne { ecb_lock_frames_remaining } => ecb_lock_frames_remaining,
-            Self::Grounded { .. } => 0,
-        };
-        let ecb_lock_frames_remaining = match policy {
-            EcbLockPolicy::StartOnDetach if self.is_grounded() => ecb_lock_duration,
-            EcbLockPolicy::StartOnDetach => current_lock,
-            EcbLockPolicy::Restart => ecb_lock_duration,
-            EcbLockPolicy::Preserve => current_lock,
-            EcbLockPolicy::Clear => 0,
-        };
-        *self = Self::Airborne { ecb_lock_frames_remaining };
-    }
-
-    pub(crate) fn tick_ecb_lock(&mut self) {
-        if let Self::Airborne { ecb_lock_frames_remaining } = self {
-            *ecb_lock_frames_remaining = ecb_lock_frames_remaining.saturating_sub(1);
-        }
     }
 }
 
@@ -93,38 +55,8 @@ mod tests {
         assert!(surface.is_grounded());
         assert_eq!(surface.line_id(), Some(line_id));
 
-        surface.apply_airborne_policy(EcbLockPolicy::Clear, 0);
+        surface.leave_ground();
         assert!(!surface.is_grounded());
         assert_eq!(surface.line_id(), None);
     }
-
-    #[test]
-    fn start_on_detach_does_not_reset_an_existing_lock() {
-        let mut surface = FighterSurfaceState::default();
-        surface.apply_airborne_policy(EcbLockPolicy::Restart, 5);
-        surface.tick_ecb_lock();
-        surface.apply_airborne_policy(EcbLockPolicy::StartOnDetach, 5);
-
-        assert_eq!(
-            surface,
-            FighterSurfaceState::Airborne {
-                ecb_lock_frames_remaining: 4,
-            }
-        );
-    }
-
-    #[test]
-    fn restart_retriggers_an_existing_lock() {
-        let mut surface = FighterSurfaceState::default();
-        surface.apply_airborne_policy(EcbLockPolicy::Restart, 5);
-        surface.tick_ecb_lock();
-        surface.apply_airborne_policy(EcbLockPolicy::Restart, 5);
-
-        assert_eq!(
-            surface,
-            FighterSurfaceState::Airborne {
-                ecb_lock_frames_remaining: 5,
-            }
-        );
-    }
 }

src/game_settings.rs

@@ -39,7 +39,6 @@ pub struct FighterSettingsCommon {
     
     /// Maximum angle changed caused by directional influence
     pub di_max_angle: FGi32,
-    pub leave_ground_ecb_frame_lock_duration: u32
 }
 #[derive(Reflect, Serialize, Deserialize, Clone)]
 #[reflect(opaque)]

src/input/gamecube/poll.rs

@@ -1,8 +1,6 @@
 use std::panic::{self, AssertUnwindSafe};
 use std::sync::atomic::{AtomicBool, Ordering};
 use std::sync::{Arc, Mutex};
-use std::thread::JoinHandle;
-use std::time::{Duration, Instant};
 
 use bevy::prelude::*;
 use gc_adapter_neo::{Controller, GcAdapter};
@@ -57,11 +55,10 @@ impl GcPortState {
 /// Shared, `Send + Sync` handle to the latest snapshot from the poll
 /// thread. Safe to store as an ordinary [`Resource`] (no `NonSend` needed)
 /// because the `GcAdapter` itself never leaves its thread.
-#[derive(Resource)]
+#[derive(Resource, Clone)]
 pub struct GcAdapterSnapshot {
     ports: Arc<Mutex<[GcPortState; 4]>>,
     shutdown: Arc<AtomicBool>,
-    poll_thread: Option<JoinHandle<()>>,
 }
 
 impl GcAdapterSnapshot {
@@ -72,37 +69,13 @@ impl GcAdapterSnapshot {
 
 impl Drop for GcAdapterSnapshot {
     fn drop(&mut self) {
-        self.shutdown.store(true, Ordering::Release);
+        // Only actually signals shutdown once the last clone (this resource
-
+        // is never cloned in practice, but be defensive) is dropped.
-        if let Some(poll_thread) = self.poll_thread.take() {
+        if Arc::strong_count(&self.shutdown) <= 1 {
-            if let Err(payload) = poll_thread.join() {
+            self.shutdown.store(true, Ordering::Relaxed);
-                error!(
-                    "GameCube Controller Adapter poll thread panicked during shutdown: {payload:?}"
-                );
         }
     }
 }
-}
-
-const INITIAL_ERROR_BACKOFF: Duration = Duration::from_millis(1);
-const MAX_ERROR_BACKOFF: Duration = Duration::from_millis(100);
-
-fn next_error_backoff(backoff: Duration) -> Duration {
-    backoff.saturating_mul(2).min(MAX_ERROR_BACKOFF)
-}
-
-/// Wait for a retry while still allowing the owner to shut the poll thread down promptly.
-fn wait_for_retry(shutdown: &AtomicBool, delay: Duration) -> bool {
-    let deadline = Instant::now() + delay;
-    while !shutdown.load(Ordering::Acquire) {
-        let remaining = deadline.saturating_duration_since(Instant::now());
-        if remaining.is_zero() {
-            return true;
-        }
-        std::thread::sleep(remaining.min(Duration::from_millis(10)));
-    }
-    false
-}
 
 /// Connects to the first GameCube adapter found on the USB bus and starts
 /// polling it on a dedicated thread. Returns `None` (after logging a
@@ -121,7 +94,7 @@ pub fn spawn_poll_thread() -> Result<GcAdapterSnapshot, gc_adapter_neo::UsbError
 
     let thread_ports = ports.clone();
     let thread_shutdown = shutdown.clone();
-    let poll_thread = std::thread::Builder::new()
+    std::thread::Builder::new()
         .name("gc-adapter-poll".into())
         .spawn(move || {
             // Flush whatever the adapter had buffered before we started
@@ -134,27 +107,17 @@ pub fn spawn_poll_thread() -> Result<GcAdapterSnapshot, gc_adapter_neo::UsbError
             let mut rate_window_start = std::time::Instant::now();
             #[cfg(debug_assertions)]
             let mut rate_window_count: u32 = 0;
-            let mut error_backoff = INITIAL_ERROR_BACKOFF;
 
-            while !thread_shutdown.load(Ordering::Acquire) {
+            while !thread_shutdown.load(Ordering::Relaxed) {
                 let result = panic::catch_unwind(AssertUnwindSafe(|| adapter.read_controllers()));
 
                 let controllers = match result {
-                    Ok(Ok(controllers)) => {
+                    Ok(Ok(controllers)) => controllers,
-                        error_backoff = INITIAL_ERROR_BACKOFF;
-                        controllers
-                    }
                     // Ignore this, for some reason we get a bunch of these when we start reading
                     Ok(Err(
                         gc_adapter_neo::AdapterError::Parse(_)
                         | gc_adapter_neo::AdapterError::ShortRead(_),
-                    )) => {
+                    )) => continue,
-                        if !wait_for_retry(&thread_shutdown, error_backoff) {
-                            break;
-                        }
-                        error_backoff = next_error_backoff(error_backoff);
-                        continue;
-                    }
                     Ok(Err(gc_adapter_neo::AdapterError::Usb(err))) => {
                         error!(
                             "GameCube Controller Adapter USB read failed ({err:?}); stopping \
@@ -197,32 +160,5 @@ pub fn spawn_poll_thread() -> Result<GcAdapterSnapshot, gc_adapter_neo::UsbError
         })
         .expect("failed to spawn gc-adapter poll thread");
 
-    Ok(GcAdapterSnapshot {
+    Ok(GcAdapterSnapshot { ports, shutdown })
-        ports,
-        shutdown,
-        poll_thread: Some(poll_thread),
-    })
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn error_backoff_is_capped() {
-        let mut backoff = INITIAL_ERROR_BACKOFF;
-        for _ in 0..16 {
-            backoff = next_error_backoff(backoff);
-        }
-
-        assert_eq!(backoff, MAX_ERROR_BACKOFF);
-        assert_eq!(next_error_backoff(MAX_ERROR_BACKOFF), MAX_ERROR_BACKOFF);
-    }
-
-    #[test]
-    fn retry_wait_stops_when_shutdown_is_requested() {
-        let shutdown = AtomicBool::new(true);
-
-        assert!(!wait_for_retry(&shutdown, Duration::from_secs(1)));
-    }
 }

src/match_loading.rs

@@ -336,15 +336,6 @@ pub fn prepare_match(
             );
             return;
         }
-
-        let ecb_bone_indices = baked.bone_names.iter().enumerate().filter_map(|(idx, name)| {
-            if manifest.ecb_bones.contains(name) {
-                Some(idx)
-            } else {
-                None
-            }
-        }).collect::<Vec<_>>();
-
         if let Err(error) = manifest.attributes.validate() {
             fail_match(
                 &mut next_state,
@@ -445,7 +436,6 @@ pub fn prepare_match(
             attack_scripts,
             manifest_handle,
             manifest.model_scale,
-            ecb_bone_indices,
         ));
     }
 
@@ -487,7 +477,7 @@ pub fn prepare_match(
     );
 
     let mut fighter_roster = Vec::with_capacity(config.players.len());
-    for (index, (player, (scene, animations, attack_scripts, manifest_handle, model_scale, ecb_bone_indices))) in
+    for (index, (player, (scene, animations, attack_scripts, manifest_handle, model_scale))) in
         config.players.iter().zip(prepared).enumerate()
     {
         let spawn_x = (index as i32 * 2 + 1 - config.players.len() as i32) * 5;
@@ -500,7 +490,6 @@ pub fn prepare_match(
             animations,
             attack_scripts,
             WorldAssetRoot(scene),
-            ecb_bone_indices
         ));
     }
 

src/math/vec.rs

@@ -2,7 +2,7 @@ use bevy::math::Vec2;
 use bevy::prelude::*;
 use fixed::types::I32F32;
 use serde::{Deserialize, Serialize};
-use std::ops::{Add, AddAssign, Div, Mul, MulAssign, Sub, SubAssign};
+use std::ops::{Add, AddAssign, Div, Mul, MulAssign, Sub};
 
 use super::int::{FGWide, FGi32};
 
@@ -227,15 +227,6 @@ impl AddAssign for FGVec2 {
     }
 }
 
-impl SubAssign for FGVec2 {
-    fn sub_assign(&mut self, rhs: Self) {
-        *self = Self {
-            x: self.x - rhs.x,
-            y: self.y - rhs.y,
-        }
-    }
-}
-
 impl MulAssign for FGVec2 {
     fn mul_assign(&mut self, rhs: Self) {
         *self = Self {

src/menus/character_select/mod.rs

@@ -1,8 +1,19 @@
 use bevy::{picking::pointer::PointerId, prelude::*};
 
 use crate::{
-    AppState, fighter::manifest::{FighterManifest, FighterManifestRegistry}, game_settings::CommonAssets, input::{LocalInputAssignments, LocalInputSource}, menus::{
+    AppState,
-        MenuCameraMarker, MenuMarker, button::FGUiButton, character_select::{character_box::CharacterBox, token::CharacterSelectToken}, cursor::{FGMenuCursor, MenuCursorInputSource}, errors::MenuErrors::FighterManifestNotFound, match_config::{MenuMatchConfig, MenuMatchPlayerSlot}, scaling, spawn_menu, style::{FGUiButtonType, FGUiStyle},
+    fighter::manifest::{FighterManifest, FighterManifestRegistry},
+    game_settings::CommonAssets,
+    input::{LocalInputAssignments, LocalInputSource},
+    menus::{
+        MenuMarker,
+        button::FGUiButton,
+        character_select::{character_box::CharacterBox, token::CharacterSelectToken},
+        cursor::{FGMenuCursor, MenuCursorInputSource},
+        errors::MenuErrors::FighterManifestNotFound,
+        match_config::{MenuMatchConfig, MenuMatchPlayerSlot},
+        scaling, spawn_menu,
+        style::{FGUiButtonType, FGUiStyle},
     },
 };
 
@@ -230,7 +241,7 @@ pub fn copy_cursor_transform_to_token(
     character_boxes: Query<(&CharacterBox, &ComputedNode, &UiGlobalTransform)>,
     match_config: Res<MenuMatchConfig>,
     cursors: Query<&UiGlobalTransform, With<FGMenuCursor>>,
-    cam: Single<&Camera, With<MenuCameraMarker>>,
+    cam: Single<&Camera>,
     ui_scale: Res<UiScale>,
 ) -> Result {
     let camera = cam.into_inner();

src/menus/cursor.rs

@@ -9,8 +9,11 @@ use bevy::{
 };
 
 use crate::{
-    input::{LocalInputAssignments, LocalInputSource}, menus::{
+    input::{LocalInputAssignments, LocalInputSource},
-        MenuCameraMarker, input::{MenuInput, MenuInputState}, scaling, style::FGUiStyle,
+    menus::{
+        input::{MenuInput, MenuInputState},
+        scaling,
+        style::FGUiStyle,
     },
 };
 
@@ -178,7 +181,7 @@ pub fn cursor_input(
 }
 
 pub fn update_cursor_transform(
-    camera: Single<&Camera, With<MenuCameraMarker>>,
+    camera: Single<&Camera>,
     query: Query<(&mut Node, &PointerLocation), With<FGMenuCursor>>,
     ui_scale: Res<UiScale>,
 ) {

src/menus/mod.rs

@@ -53,7 +53,6 @@ pub fn wrap_menu(menu: impl Scene) -> impl Scene {
                 #MenuCamera
                 Camera
                 Camera2d
-                MenuCameraMarker
             ),
             (
                 #MenuContainer
@@ -74,6 +73,7 @@ pub fn wrap_menu(menu: impl Scene) -> impl Scene {
 
 pub fn despawn_menu(
     existing_menu: Option<Single<Entity, With<MenuMarker>>>,
+    existing_menu_camera: Option<Single<Entity, With<MenuCameraMarker>>>,
     mut commands: Commands,
 ) {
     if let Some(entity) = existing_menu {
@@ -82,6 +82,9 @@ pub fn despawn_menu(
             .despawn();
     }
 
+    if let Some(menu_cam) = existing_menu_camera {
+        commands.entity(*menu_cam).despawn();
+    }
 }
 
 pub fn spawn_menu(

src/schedule.rs

@@ -19,10 +19,10 @@ pub enum GameplaySet {
     StateUpdate,
     /// Integrate velocities into positions.
     Physics,
-    /// Resolve the integrated positions against the stage.
-    Collision,
     /// Solve collision boxes
     Animation,
+    /// Resolve the integrated positions against the stage.
+    Collision,
     /// Resolve attacks
     Attacks,
 }
@@ -40,8 +40,8 @@ impl Plugin for GameplaySchedulePlugin {
                 GameplaySet::Interrupt,
                 GameplaySet::StateUpdate,
                 GameplaySet::Physics,
-                GameplaySet::Animation,
                 GameplaySet::Collision,
+                GameplaySet::Animation,
                 GameplaySet::Attacks,
             )
                 .chain(),