Implement hitstun and knockback.

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>) {
-    for mut animation in &mut fighters {
-        animation.advance();
+pub fn advance_fighter_animation_frames(
+    mut fighters: Query<(&mut FighterAnimationFrame, &FighterHitstop)>,
+) {
+    for (mut animation, hitstop) in &mut fighters {
+        if hitstop.remaining_frames == 0 {
+            animation.advance();
+        }
     }
 }
 
@@ -81,6 +85,9 @@ pub enum AnimKind {
     Fall,
     Turn,
 
+    FlinchGround,
+    FlinchAir,
+
     // Attacks
     AttackJab1,
     AttackUpTilt,