feat: Enhance weapon switching logic and add tests for animation pacing and menu behavior

Signed-off-by: Hans Kokx <hans.d.kokx@gmail.com>

packages/wolf_3d_dart/lib/src/engine/player/player.dart

@@ -61,8 +61,11 @@ class Player {
   // 0.0 is resting, 500.0 is fully off-screen
   double weaponAnimOffset = 0.0;
 
-  // How fast the weapon drops/raises per tick
-  final double switchSpeed = 30.0;
+  static const double _weaponSwitchTravel = 500.0;
+  static const double _weaponSwitchPhaseTics = 6.0;
+  static const double _ticRate = 70.0;
+  static const double _weaponSwitchUnitsPerSecond =
+      (_weaponSwitchTravel * _ticRate) / _weaponSwitchPhaseTics;
 
   Player({required this.x, required this.y, required this.angle}) {
     currentWeapon = weapons[WeaponType.pistol]!;
@@ -121,12 +124,18 @@ class Player {
       }
     }
 
-    updateWeaponSwitch();
+    updateWeaponSwitch(elapsed);
   }
 
   // --- Weapon Switching & Animation Logic ---
 
-  void updateWeaponSwitch() {
+  void updateWeaponSwitch(Duration elapsed) {
+    final double delta =
+        _weaponSwitchUnitsPerSecond * (elapsed.inMicroseconds / 1000000.0);
+    if (delta <= 0.0) {
+      return;
+    }
+
     if (switchState == WeaponSwitchState.lowering) {
       // If the map doesn't contain the pending weapon, stop immediately
       if (weapons[pendingWeaponType] == null) {
@@ -134,9 +143,9 @@ class Player {
         return;
       }
 
-      weaponAnimOffset += switchSpeed;
-      if (weaponAnimOffset >= 500.0) {
-        weaponAnimOffset = 500.0;
+      weaponAnimOffset += delta;
+      if (weaponAnimOffset >= _weaponSwitchTravel) {
+        weaponAnimOffset = _weaponSwitchTravel;
 
         // We already know it's not null now, but we can keep the
         // fallback to pistol just to be extra safe.
@@ -145,7 +154,7 @@ class Player {
         switchState = WeaponSwitchState.raising;
       }
     } else if (switchState == WeaponSwitchState.raising) {
-      weaponAnimOffset -= switchSpeed;
+      weaponAnimOffset -= delta;
       if (weaponAnimOffset <= 0) {
         weaponAnimOffset = 0.0;
         switchState = WeaponSwitchState.idle;
@@ -175,8 +184,7 @@ class Player {
     // A 10 damage hit gives a 0.5 flash, a 20 damage hit maxes it out at 1.0
     damageFlash = math.min(1.0, damageFlash + (damage * 0.05));
     _chaingunPickupFaceMsRemaining = 0;
-    _mutantDeathFaceActive =
-      health <= 0 && attackerType == EnemyType.mutant;
+    _mutantDeathFaceActive = health <= 0 && attackerType == EnemyType.mutant;
 
     if (health <= 0) {
       log("[PLAYER] Died! Final Score: $score");

packages/wolf_3d_dart/lib/src/rendering/ascii_renderer.dart

@@ -2094,7 +2094,7 @@ class AsciiRenderer extends CliRendererBackend<dynamic> {
 
   @override
   dynamic finalizeFrame() {
-    if (engine.difficulty != null) {
+    if (engine.difficulty != null && !engine.isMenuOpen) {
       if (engine.player.damageFlash > 0.0) {
         if (_usesTerminalLayout) {
           _applyDamageFlashToScene();

packages/wolf_3d_dart/lib/src/rendering/sixel_renderer.dart

@@ -1336,7 +1336,7 @@ class SixelRenderer extends CliRendererBackend<String> {
     sb.write('\x1bPq');
     sb.write('"1;1;$_outputWidth;$_outputHeight');
 
-    final bool gameplayActive = engine.difficulty != null;
+    final bool gameplayActive = engine.difficulty != null && !engine.isMenuOpen;
     final double damageIntensity = gameplayActive
         ? engine.player.damageFlash
         : 0.0;

packages/wolf_3d_dart/lib/src/rendering/software_renderer.dart

@@ -1401,7 +1401,7 @@ class SoftwareRenderer extends RendererBackend<FrameBuffer> {
 
   @override
   FrameBuffer finalizeFrame() {
-    if (engine.difficulty != null) {
+    if (engine.difficulty != null && !engine.isMenuOpen) {
       if (engine.player.damageFlash > 0) {
         _applyDamageFlash();
       } else if (engine.player.bonusFlash > 0) {

packages/wolf_3d_dart/test/entities/canonical_numeric_parity_test.dart

@@ -115,5 +115,22 @@ void main() {
       expect(player.bonusFlash, lessThan(1.0));
       expect(player.bonusFlash, greaterThan(0.0));
     });
+
+    test('weapon switch animates at canonical tic pacing', () {
+      final player = Player(x: 1.5, y: 1.5, angle: 0);
+      player.weapons[WeaponType.machineGun] = MachineGun();
+
+      player.requestWeaponSwitch(WeaponType.machineGun);
+      expect(player.switchState, WeaponSwitchState.lowering);
+
+      player.tick(const Duration(milliseconds: 86));
+      expect(player.switchState, WeaponSwitchState.raising);
+      expect(player.weaponAnimOffset, closeTo(500.0, 0.001));
+      expect(player.currentWeapon.type, WeaponType.machineGun);
+
+      player.tick(const Duration(milliseconds: 86));
+      expect(player.switchState, WeaponSwitchState.idle);
+      expect(player.weaponAnimOffset, closeTo(0.0, 0.001));
+    });
   });
 }

packages/wolf_3d_dart/test/rendering/map_overlay_renderer_test.dart

@@ -49,6 +49,27 @@ void main() {
       expect(mapPixels.contains(ColorPalette.vga32Bit[2]), isTrue);
       expect(mapPixels[hudProbeIndex], equals(normalPixels[hudProbeIndex]));
     });
+
+    test('software renderer does not apply bonus flash while menu is open', () {
+      final input = _MutableInput();
+      final engine = _buildEngine(input: input);
+      engine.init();
+      input.isBack = true;
+      engine.tick(const Duration(milliseconds: 16));
+      input.isBack = false;
+
+      expect(engine.isMenuOpen, isTrue);
+
+      final renderer = SoftwareRenderer();
+
+      engine.player.bonusFlash = 0.0;
+      final List<int> menuBaseline = List<int>.from(renderer.render(engine).pixels);
+
+      engine.player.bonusFlash = 1.0;
+      final List<int> menuWithFlash = List<int>.from(renderer.render(engine).pixels);
+
+      expect(menuWithFlash, equals(menuBaseline));
+    });
   });
 }
 
@@ -69,7 +90,12 @@ class _StaticInput extends Wolf3dInput {
   }
 }
 
-WolfEngine _buildEngine() {
+class _MutableInput extends Wolf3dInput {
+  @override
+  void update() {}
+}
+
+WolfEngine _buildEngine({Wolf3dInput? input}) {
   final wallGrid = _buildGrid();
   final objectGrid = _buildGrid();
 
@@ -115,7 +141,7 @@ WolfEngine _buildEngine() {
     difficulty: Difficulty.medium,
     startingEpisode: 0,
     frameBuffer: FrameBuffer(96, 96),
-    input: _StaticInput(),
+    input: input ?? _StaticInput(),
     onGameWon: () {},
   );
 }