feat: Update HUD rendering to display current player lives dynamically

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

packages/wolf_3d_dart/test/engine/level_state_and_pause_menu_test.dart

@@ -38,12 +38,75 @@ void main() {
       expect(engine.player.lives, 5);
       expect(engine.player.hasMachineGun, isTrue);
       expect(engine.player.hasChainGun, isTrue);
+      expect(engine.player.weapons[WeaponType.machineGun], isNotNull);
+      expect(engine.player.weapons[WeaponType.chainGun], isNotNull);
       expect(engine.player.currentWeapon.type, WeaponType.chainGun);
       expect(engine.player.hasGoldKey, isFalse);
       expect(engine.player.hasSilverKey, isFalse);
       expect(engine.player.x, closeTo(4.5, 0.001));
       expect(engine.player.y, closeTo(4.5, 0.001));
     });
+
+    test('secret-exit transitions clear keys but preserve other player state', () {
+      final input = _TestInput();
+      final engine = WolfEngine(
+        data: _buildSecretExitTestData(),
+        difficulty: Difficulty.hard,
+        startingEpisode: 0,
+        frameBuffer: FrameBuffer(64, 64),
+        input: input,
+        engineAudio: _SilentAudio(),
+        onGameWon: () {},
+      );
+
+      engine.init();
+      engine.player
+        ..health = 61
+        ..ammo = 42
+        ..score = 777
+        ..lives = 6
+        ..hasMachineGun = true
+        ..hasChainGun = true
+        ..hasGoldKey = true
+        ..hasSilverKey = true;
+      engine.player.weapons[WeaponType.machineGun] = MachineGun();
+      engine.player.weapons[WeaponType.chainGun] = ChainGun();
+      engine.player.currentWeapon = engine.player.weapons[WeaponType.chainGun]!;
+
+      input.isInteracting = true;
+      engine.tick(const Duration(milliseconds: 16));
+      input.isInteracting = false;
+
+      expect(engine.activeLevel.name, 'Level 10');
+      expect(engine.player.health, 61);
+      expect(engine.player.ammo, 42);
+      expect(engine.player.score, 777);
+      expect(engine.player.lives, 6);
+      expect(engine.player.hasMachineGun, isTrue);
+      expect(engine.player.hasChainGun, isTrue);
+      expect(engine.player.currentWeapon.type, WeaponType.chainGun);
+      expect(engine.player.hasGoldKey, isFalse);
+      expect(engine.player.hasSilverKey, isFalse);
+
+      engine.player
+        ..hasGoldKey = true
+        ..hasSilverKey = true;
+
+      input.isInteracting = true;
+      engine.tick(const Duration(milliseconds: 16));
+      input.isInteracting = false;
+
+      expect(engine.activeLevel.name, 'Level 2');
+      expect(engine.player.health, 61);
+      expect(engine.player.ammo, 42);
+      expect(engine.player.score, 777);
+      expect(engine.player.lives, 6);
+      expect(engine.player.hasMachineGun, isTrue);
+      expect(engine.player.hasChainGun, isTrue);
+      expect(engine.player.currentWeapon.type, WeaponType.chainGun);
+      expect(engine.player.hasGoldKey, isFalse);
+      expect(engine.player.hasSilverKey, isFalse);
+    });
   });
 
   group('Pause and main menu', () {
@@ -434,6 +497,49 @@ WolfensteinData _buildTestData({required GameVersion gameVersion}) {
   );
 }
 
+WolfensteinData _buildSecretExitTestData() {
+  final List<WolfLevel> levels = [];
+
+  for (int i = 0; i < 10; i++) {
+    final walls = _buildGrid();
+    final objects = _buildGrid();
+    _fillBoundaries(walls, 2);
+
+    objects[2][2] = MapObject.playerEast;
+
+    if (i == 0) {
+      walls[2][3] = MapObject.secretElevatorSwitch;
+    } else if (i == 9) {
+      walls[2][3] = MapObject.normalElevatorSwitch;
+    }
+
+    levels.add(
+      WolfLevel(
+        name: 'Level ${i + 1}',
+        wallGrid: walls,
+        areaGrid: List.generate(64, (_) => List.filled(64, -1)),
+        objectGrid: objects,
+        music: Music.level01,
+      ),
+    );
+  }
+
+  return WolfensteinData(
+    version: GameVersion.retail,
+    dataVersion: DataVersion.unknown,
+    registry: RetailAssetRegistry(),
+    walls: [_solidSprite(1), _solidSprite(1), _solidSprite(2), _solidSprite(2)],
+    sprites: List.generate(436, (_) => _solidSprite(255)),
+    sounds: List.generate(200, (_) => PcmSound(Uint8List(1))),
+    adLibSounds: const [],
+    music: const [],
+    vgaImages: const [],
+    episodes: [
+      Episode(name: 'Episode 1', levels: levels),
+    ],
+  );
+}
+
 class _TestInput extends Wolf3dInput {
   @override
   void update() {}

packages/wolf_3d_dart/test/rendering/hud_lives_rendering_test.dart

@@ -0,0 +1,173 @@
+import 'dart:typed_data';
+
+import 'package:test/test.dart';
+import 'package:wolf_3d_dart/src/rendering/renderer_backend.dart';
+import 'package:wolf_3d_dart/wolf_3d_data_types.dart';
+import 'package:wolf_3d_dart/wolf_3d_engine.dart';
+import 'package:wolf_3d_dart/wolf_3d_input.dart';
+
+void main() {
+  test('standard VGA HUD renders current player lives value', () {
+    final engine = _buildEngine();
+    engine.init();
+    engine.player.lives = 7;
+
+    final renderer = _HudProbeRenderer(vgaImages: engine.data.vgaImages);
+    renderer.drawHudForTest(engine);
+
+    final expectedDigitIndex = engine.data.registry.hud
+        .resolve(HudKey.digit7)
+        ?.vgaIndex;
+    expect(expectedDigitIndex, isNotNull);
+
+    final livesDigitCall = renderer.drawCalls.firstWhere(
+      (call) => call.startY == 176 && call.startX == 112,
+      orElse: () => throw StateError('Lives digit was not rendered.'),
+    );
+
+    expect(livesDigitCall.imageIndex, expectedDigitIndex);
+  });
+}
+
+class _HudProbeRenderer extends RendererBackend<int> {
+  final List<VgaImage> vgaImages;
+  final List<_HudDrawCall> drawCalls = <_HudDrawCall>[];
+
+  _HudProbeRenderer({required this.vgaImages});
+
+  void drawHudForTest(WolfEngine engine) {
+    drawStandardVgaHud(engine);
+  }
+
+  @override
+  void blitHudVgaImage(VgaImage image, int startX320, int startY200) {
+    drawCalls.add(
+      _HudDrawCall(
+        imageIndex: vgaImages.indexOf(image),
+        startX: startX320,
+        startY: startY200,
+      ),
+    );
+  }
+
+  @override
+  int finalizeFrame() => 0;
+
+  @override
+  void drawHud(WolfEngine engine) {}
+
+  @override
+  void drawSpriteStripe(
+    int stripeX,
+    int drawStartY,
+    int drawEndY,
+    int spriteHeight,
+    Sprite texture,
+    int texX,
+    double transformY,
+  ) {}
+
+  @override
+  void drawWallColumn(
+    int x,
+    int drawStart,
+    int drawEnd,
+    int columnHeight,
+    Sprite texture,
+    int texX,
+    double perpWallDist,
+    int side,
+  ) {}
+
+  @override
+  void drawWeapon(WolfEngine engine) {}
+
+  @override
+  void prepareFrame(WolfEngine engine) {}
+}
+
+class _HudDrawCall {
+  final int imageIndex;
+  final int startX;
+  final int startY;
+
+  const _HudDrawCall({
+    required this.imageIndex,
+    required this.startX,
+    required this.startY,
+  });
+}
+
+WolfEngine _buildEngine() {
+  final wallGrid = _buildGrid();
+  final objectGrid = _buildGrid();
+
+  _fillBoundaries(wallGrid, 2);
+  objectGrid[2][2] = MapObject.playerEast;
+
+  return WolfEngine(
+    data: WolfensteinData(
+      version: GameVersion.retail,
+      dataVersion: DataVersion.unknown,
+      registry: RetailAssetRegistry(),
+      walls: [
+        _solidSprite(1),
+        _solidSprite(1),
+        _solidSprite(2),
+        _solidSprite(2),
+      ],
+      sprites: List.generate(436, (_) => _solidSprite(255)),
+      sounds: const [],
+      adLibSounds: const [],
+      music: const [],
+      vgaImages: List.generate(220, (_) => _vgaStub()),
+      episodes: [
+        Episode(
+          name: 'Episode 1',
+          levels: [
+            WolfLevel(
+              name: 'Level 1',
+              wallGrid: wallGrid,
+              areaGrid: List.generate(64, (_) => List.filled(64, -1)),
+              objectGrid: objectGrid,
+              music: Music.level01,
+            ),
+          ],
+        ),
+      ],
+    ),
+    difficulty: Difficulty.medium,
+    startingEpisode: 0,
+    frameBuffer: FrameBuffer(96, 96),
+    input: _StaticInput(),
+    onGameWon: () {},
+  );
+}
+
+class _StaticInput extends Wolf3dInput {
+  @override
+  void update() {}
+}
+
+VgaImage _vgaStub() {
+  return VgaImage(
+    width: 4,
+    height: 1,
+    pixels: Uint8List.fromList([0, 0, 0, 0]),
+  );
+}
+
+SpriteMap _buildGrid() => List.generate(64, (_) => List.filled(64, 0));
+
+void _fillBoundaries(SpriteMap grid, int wallId) {
+  for (int i = 0; i < 64; i++) {
+    grid[0][i] = wallId;
+    grid[63][i] = wallId;
+    grid[i][0] = wallId;
+    grid[i][63] = wallId;
+  }
+}
+
+Sprite _solidSprite(int colorIndex) {
+  return Sprite(Uint8List.fromList(List.filled(64 * 64, colorIndex)));
+}