feat: implemented FlutterForestBonusBehavior

lib/game/components/components.dart

@@ -4,7 +4,7 @@ export 'camera_controller.dart';
 export 'controlled_ball.dart';
 export 'controlled_flipper.dart';
 export 'controlled_plunger.dart';
-export 'flutter_forest.dart';
+export 'flutter_forest/flutter_forest.dart';
 export 'game_flow_controller.dart';
 export 'google_word/google_word.dart';
 export 'launcher.dart';

lib/game/components/flutter_forest.dart

@@ -1,78 +0,0 @@
-// ignore_for_file: avoid_renaming_method_parameters
-
-import 'package:flame/components.dart';
-import 'package:pinball/game/game.dart';
-import 'package:pinball_components/pinball_components.dart';
-import 'package:pinball_flame/pinball_flame.dart';
-
-/// {@template flutter_forest}
-/// Area positioned at the top right of the [Board] where the [Ball]
-/// can bounce off [DashNestBumper]s.
-///
-/// When all [DashNestBumper]s are hit at least once, the [GameBonus.dashNest]
-/// is awarded, and the [DashNestBumper.main] releases a new [Ball].
-/// {@endtemplate}
-class FlutterForest extends Component
-    with Controls<_FlutterForestController>, HasGameRef<PinballGame> {
-  /// {@macro flutter_forest}
-  FlutterForest()
-      : super(
-          children: [
-            Signpost(
-              children: [
-                ScoringBehavior(points: 20),
-              ],
-            )..initialPosition = Vector2(8.35, -58.3),
-            DashNestBumper.main(
-              children: [
-                ScoringBehavior(points: 20),
-              ],
-            )..initialPosition = Vector2(18.55, -59.35),
-            DashNestBumper.a(
-              children: [
-                ScoringBehavior(points: 20),
-              ],
-            )..initialPosition = Vector2(8.95, -51.95),
-            DashNestBumper.b(
-              children: [
-                ScoringBehavior(points: 20),
-              ],
-            )..initialPosition = Vector2(23.3, -46.75),
-            DashAnimatronic()..position = Vector2(20, -66),
-          ],
-        ) {
-    controller = _FlutterForestController(this);
-  }
-}
-
-class _FlutterForestController extends ComponentController<FlutterForest>
-    with HasGameRef<PinballGame> {
-  _FlutterForestController(FlutterForest flutterForest) : super(flutterForest);
-
-  final _activatedBumpers = <DashNestBumper>{};
-
-  void activateBumper(DashNestBumper dashNestBumper) {
-    if (!_activatedBumpers.add(dashNestBumper)) return;
-
-    dashNestBumper.activate();
-
-    final activatedBonus = _activatedBumpers.length == 3;
-    if (activatedBonus) {
-      _addBonusBall();
-
-      gameRef.read<GameBloc>().add(const BonusActivated(GameBonus.dashNest));
-      _activatedBumpers
-        ..forEach((bumper) => bumper.deactivate())
-        ..clear();
-
-      component.firstChild<DashAnimatronic>()?.playing = true;
-    }
-  }
-
-  Future<void> _addBonusBall() async {
-    await gameRef.add(
-      ControlledBall.bonus(characterTheme: gameRef.characterTheme)
-        ..initialPosition = Vector2(17.2, -52.7),
-    );
-  }
-}

lib/game/components/flutter_forest/behaviors/behaviors.dart

@@ -0,0 +1 @@
+export 'flutter_forest_bonus_behavior.dart';

lib/game/components/flutter_forest/behaviors/flutter_forest_bonus_behavior.dart

@@ -0,0 +1,44 @@
+import 'package:flame/components.dart';
+import 'package:pinball/game/game.dart';
+import 'package:pinball_components/pinball_components.dart';
+import 'package:pinball_flame/pinball_flame.dart';
+
+/// When all [DashNestBumper]s are hit at least once, the [GameBonus.dashNest]
+/// is awarded, and the [DashNestBumper.main] releases a new [Ball].
+class FlutterForestBonusBehavior extends Component
+    with ParentIsA<FlutterForest>, HasGameRef<PinballGame> {
+  @override
+  void onMount() {
+    super.onMount();
+    // TODO(alestiago): Refactor subscription management once the following is
+    // merged:
+    // https://github.com/flame-engine/flame/pull/1538
+    parent.bloc.stream.listen(_onNewState);
+
+    final bumpers = parent.children.whereType<DashNestBumper>();
+    for (final bumper in bumpers) {
+      bumper.bloc.stream.listen((state) {
+        if (state == DashNestBumperState.active) {
+          parent.bloc.onBumperActivated(bumper);
+        }
+      });
+    }
+  }
+
+  void _onNewState(FlutterForestState state) {
+    if (state.hasBonus) {
+      gameRef.read<GameBloc>().add(const BonusActivated(GameBonus.dashNest));
+
+      gameRef.add(
+        ControlledBall.bonus(theme: gameRef.theme)
+          ..initialPosition = Vector2(17.2, -52.7),
+      );
+      parent.firstChild<DashAnimatronic>()?.playing = true;
+      for (final bumper in state.activatedBumpers) {
+        bumper.bloc.onReset();
+      }
+
+      parent.bloc.onBonusApplied();
+    }
+  }
+}

lib/game/components/flutter_forest/cubit/flutter_forest_cubit.dart

@@ -0,0 +1,23 @@
+import 'package:bloc/bloc.dart';
+import 'package:equatable/equatable.dart';
+import 'package:pinball_components/pinball_components.dart';
+
+part 'flutter_forest_state.dart';
+
+class FlutterForestCubit extends Cubit<FlutterForestState> {
+  FlutterForestCubit() : super(FlutterForestState.initial());
+
+  void onBumperActivated(DashNestBumper dashNestBumper) {
+    emit(
+      state.copyWith(
+        activatedBumpers: state.activatedBumpers.union({dashNestBumper}),
+      ),
+    );
+  }
+
+  void onBonusApplied() {
+    emit(
+      state.copyWith(activatedBumpers: const {}),
+    );
+  }
+}

lib/game/components/flutter_forest/cubit/flutter_forest_state.dart

@@ -0,0 +1,26 @@
+// ignore_for_file: public_member_api_docs
+
+part of 'flutter_forest_cubit.dart';
+
+class FlutterForestState extends Equatable {
+  const FlutterForestState({
+    required this.activatedBumpers,
+  });
+
+  const FlutterForestState.initial() : this(activatedBumpers: const {});
+
+  final Set<DashNestBumper> activatedBumpers;
+
+  bool get hasBonus => activatedBumpers.length == 3;
+
+  FlutterForestState copyWith({
+    Set<DashNestBumper>? activatedBumpers,
+  }) {
+    return FlutterForestState(
+      activatedBumpers: activatedBumpers ?? this.activatedBumpers,
+    );
+  }
+
+  @override
+  List<Object> get props => [activatedBumpers];
+}

lib/game/components/flutter_forest/flutter_forest.dart

@@ -0,0 +1,62 @@
+// ignore_for_file: avoid_renaming_method_parameters
+
+import 'package:flame/components.dart';
+import 'package:flutter/material.dart';
+import 'package:pinball/game/components/flutter_forest/behaviors/behaviors.dart';
+import 'package:pinball/game/game.dart';
+import 'package:pinball_components/pinball_components.dart';
+
+export 'cubit/flutter_forest_cubit.dart';
+
+/// {@template flutter_forest}
+/// Area positioned at the top right of the [Board] where the [Ball]
+/// can bounce off [DashNestBumper]s.
+/// {@endtemplate}
+class FlutterForest extends Component {
+  /// {@macro flutter_forest}
+  FlutterForest()
+      : bloc = FlutterForestCubit(),
+        super(
+          children: [
+            Signpost(
+              children: [
+                ScoringBehavior(points: 20),
+              ],
+            )..initialPosition = Vector2(8.35, -58.3),
+            DashNestBumper.main(
+              children: [
+                ScoringBehavior(points: 20),
+              ],
+            )..initialPosition = Vector2(18.55, -59.35),
+            DashNestBumper.a(
+              children: [
+                ScoringBehavior(points: 20),
+              ],
+            )..initialPosition = Vector2(8.95, -51.95),
+            DashNestBumper.b(
+              children: [
+                ScoringBehavior(points: 20),
+              ],
+            )..initialPosition = Vector2(23.3, -46.75),
+            DashAnimatronic()..position = Vector2(20, -66),
+            FlutterForestBonusBehavior(),
+          ],
+        );
+
+  /// {@macro flutter_forest}
+  @visibleForTesting
+  FlutterForest.test({
+    required this.bloc,
+  });
+
+  // TODO(alestiago): Consider refactoring once the following is merged:
+  // https://github.com/flame-engine/flame/pull/1538
+  // ignore: public_member_api_docs
+  final FlutterForestCubit bloc;
+
+  @override
+  void onRemove() {
+    bloc.close();
+    super.onRemove();
+  }
+}

lib/game/pinball_game.dart

@@ -139,7 +139,7 @@ class DebugPinballGame extends PinballGame with FPSCounter, TapDetector {
   @override
   Future<void> onLoad() async {
     await super.onLoad();
-    await _loadBackground();
+    // await _loadBackground();
     await add(_DebugInformation());
   }
 

packages/pinball_components/lib/src/components/alien_bumper/cubit/alien_bumper_cubit.dart

@@ -9,12 +9,12 @@ class AlienBumperCubit extends Cubit<AlienBumperState> {
   // ignore: public_member_api_docs
   AlienBumperCubit() : super(AlienBumperState.active);
 
-  /// Event added when a bumper contacts with a ball.
+  /// Event added when the bumper contacts with a ball.
   void onBallContacted() {
     emit(AlienBumperState.inactive);
   }
 
-  /// Event added when a bumper finishes blinking.
+  /// Event added when the bumper finishes blinking.
   void onBlinked() {
     emit(AlienBumperState.active);
   }

packages/pinball_components/lib/src/components/components.dart

@@ -8,7 +8,7 @@ export 'boundaries.dart';
 export 'camera_zoom.dart';
 export 'chrome_dino.dart';
 export 'dash_animatronic.dart';
-export 'dash_nest_bumper.dart';
+export 'dash_nest_bumper/dash_nest_bumper.dart';
 export 'dino_walls.dart';
 export 'fire_effect.dart';
 export 'flipper.dart';

packages/pinball_components/lib/src/components/dash_nest_bumper/behaviors/behaviors.dart

@@ -0,0 +1 @@
+export 'dash_nest_bumper_contact_behavior.dart';

packages/pinball_components/lib/src/components/dash_nest_bumper/behaviors/dash_nest_bumper_contact_behavior.dart

@@ -0,0 +1,15 @@
+import 'package:flame_forge2d/flame_forge2d.dart';
+import 'package:pinball_components/pinball_components.dart';
+import 'package:pinball_flame/pinball_flame.dart';
+
+// TODO(alestiago): Evaluate if there is any useful documentation that could
+// be added to this class.
+// ignore: public_member_api_docs
+class DashBumperBallContactBehavior extends ContactBehavior<DashNestBumper> {
+  @override
+  void beginContact(Object other, Contact contact) {
+    super.beginContact(other, contact);
+    if (other is! Ball) return;
+    parent.bloc.onBallContacted();
+  }
+}

packages/pinball_components/lib/src/components/dash_nest_bumper/cubit/dash_nest_bumper_cubit.dart

@@ -0,0 +1,21 @@
+import 'package:bloc/bloc.dart';
+
+part 'dash_nest_bumper_state.dart';
+
+// TODO(alestiago): Evaluate if there is any useful documentation that could
+// be added to this class.
+// ignore: public_member_api_docs
+class DashNestBumperCubit extends Cubit<DashNestBumperState> {
+  // ignore: public_member_api_docs
+  DashNestBumperCubit() : super(DashNestBumperState.inactive);
+
+  /// Event added when the bumper contacts with a ball.
+  void onBallContacted() {
+    emit(DashNestBumperState.active);
+  }
+
+  /// Event added when the bumper should return to its initial configuration.
+  void onReset() {
+    emit(DashNestBumperState.inactive);
+  }
+}

packages/pinball_components/lib/src/components/dash_nest_bumper/cubit/dash_nest_bumper_state.dart

@@ -0,0 +1,10 @@
+part of 'dash_nest_bumper_cubit.dart';
+
+/// Indicates the [DashNestBumperCubit]'s current state.
+enum DashNestBumperState {
+  /// A lit up bumper.
+  active,
+
+  /// A dimmed bumper.
+  inactive,
+}

packages/pinball_components/lib/src/components/dash_nest_bumper/dash_nest_bumper.dart

@@ -4,6 +4,10 @@ import 'package:flame/components.dart';
 import 'package:flame_forge2d/flame_forge2d.dart';
 import 'package:flutter/material.dart';
 import 'package:pinball_components/pinball_components.dart';
+import 'package:pinball_components/src/components/dash_nest_bumper/behaviors/behaviors.dart';
+import 'package:pinball_flame/pinball_flame.dart';
+
+export 'cubit/dash_nest_bumper_cubit.dart';
 
 /// {@template dash_nest_bumper}
 /// Bumper with a nest appearance.
@@ -17,6 +21,7 @@ class DashNestBumper extends BodyComponent with InitialPosition {
     required String inactiveAssetPath,
     required Vector2 spritePosition,
     Iterable<Component>? children,
+    required this.bloc,
   })  : _majorRadius = majorRadius,
         _minorRadius = minorRadius,
         super(
@@ -26,7 +31,9 @@ class DashNestBumper extends BodyComponent with InitialPosition {
               activeAssetPath: activeAssetPath,
               inactiveAssetPath: inactiveAssetPath,
               position: spritePosition,
+              current: bloc.state,
             ),
+            DashBumperBallContactBehavior(),
             ...?children,
           ],
           renderBody: false,
@@ -42,6 +49,7 @@ class DashNestBumper extends BodyComponent with InitialPosition {
           inactiveAssetPath: Assets.images.dash.bumper.main.inactive.keyName,
           spritePosition: Vector2(0, -0.3),
           children: children,
+          bloc: DashNestBumperCubit(),
         );
 
   /// {@macro dash_nest_bumper}
@@ -54,6 +62,7 @@ class DashNestBumper extends BodyComponent with InitialPosition {
           inactiveAssetPath: Assets.images.dash.bumper.a.inactive.keyName,
           spritePosition: Vector2(0.35, -1.2),
           children: children,
+          bloc: DashNestBumperCubit(),
         );
 
   /// {@macro dash_nest_bumper}
@@ -66,11 +75,29 @@ class DashNestBumper extends BodyComponent with InitialPosition {
           inactiveAssetPath: Assets.images.dash.bumper.b.inactive.keyName,
           spritePosition: Vector2(0.35, -1.2),
           children: children,
+          bloc: DashNestBumperCubit(),
         );
 
+  /// {@macro dash_nest_bumper}
+  @visibleForTesting
+  DashNestBumper.test({required this.bloc})
+      : _majorRadius = 3,
+        _minorRadius = 2.5;
+
   final double _majorRadius;
   final double _minorRadius;
 
+  // TODO(alestiago): Consider refactoring once the following is merged:
+  // https://github.com/flame-engine/flame/pull/1538
+  // ignore: public_member_api_docs
+  final DashNestBumperCubit bloc;
+
+  @override
+  void onRemove() {
+    bloc.close();
+    super.onRemove();
+  }
+
   @override
   Body createBody() {
     final shape = EllipseShape(
@@ -86,41 +113,22 @@ class DashNestBumper extends BodyComponent with InitialPosition {
 
     return world.createBody(bodyDef)..createFixture(fixtureDef);
   }
-
-  /// Activates the [DashNestBumper].
-  void activate() {
-    firstChild<_DashNestBumperSpriteGroupComponent>()?.current =
-        DashNestBumperSpriteState.active;
-  }
-
-  /// Deactivates the [DashNestBumper].
-  void deactivate() {
-    firstChild<_DashNestBumperSpriteGroupComponent>()?.current =
-        DashNestBumperSpriteState.inactive;
-  }
-}
-
-/// Indicates the [DashNestBumper]'s current sprite state.
-@visibleForTesting
-enum DashNestBumperSpriteState {
-  /// A lit up bumper.
-  active,
-
-  /// A dimmed bumper.
-  inactive,
 }
 
 class _DashNestBumperSpriteGroupComponent
-    extends SpriteGroupComponent<DashNestBumperSpriteState> with HasGameRef {
+    extends SpriteGroupComponent<DashNestBumperState>
+    with HasGameRef, ParentIsA<DashNestBumper> {
   _DashNestBumperSpriteGroupComponent({
     required String activeAssetPath,
     required String inactiveAssetPath,
     required Vector2 position,
+    required DashNestBumperState current,
   })  : _activeAssetPath = activeAssetPath,
         _inactiveAssetPath = inactiveAssetPath,
         super(
           anchor: Anchor.center,
           position: position,
+          current: current,
         );
 
   final String _activeAssetPath;
@@ -129,15 +137,15 @@ class _DashNestBumperSpriteGroupComponent
   @override
   Future<void> onLoad() async {
     await super.onLoad();
+    parent.bloc.stream.listen((state) => current = state);
+
     final sprites = {
-      DashNestBumperSpriteState.active:
+      DashNestBumperState.active:
           Sprite(gameRef.images.fromCache(_activeAssetPath)),
-      DashNestBumperSpriteState.inactive:
+      DashNestBumperState.inactive:
           Sprite(gameRef.images.fromCache(_inactiveAssetPath)),
     };
     this.sprites = sprites;
-
-    current = DashNestBumperSpriteState.inactive;
     size = sprites[current]!.originalSize / 10;
   }
 }

packages/pinball_components/lib/src/components/google_letter/cubit/google_letter_cubit.dart

@@ -9,12 +9,12 @@ class GoogleLetterCubit extends Cubit<GoogleLetterState> {
   // ignore: public_member_api_docs
   GoogleLetterCubit() : super(GoogleLetterState.inactive);
 
-  /// Event added when a letter contacts with a ball.
+  /// Event added when the letter contacts with a ball.
   void onBallContacted() {
     emit(GoogleLetterState.active);
   }
 
-  /// Event added when a letter should return to its initial configuration.
+  /// Event added when the letter should return to its initial configuration.
   void onReset() {
     emit(GoogleLetterState.inactive);
   }

packages/pinball_components/lib/src/components/sparky_bumper/cubit/sparky_bumper_cubit.dart

@@ -9,12 +9,12 @@ class SparkyBumperCubit extends Cubit<SparkyBumperState> {
   // ignore: public_member_api_docs
   SparkyBumperCubit() : super(SparkyBumperState.active);
 
-  /// Event added when a bumper contacts with a ball.
+  /// Event added when the bumper contacts with a ball.
   void onBallContacted() {
     emit(SparkyBumperState.inactive);
   }
 
-  /// Event added when a bumper finishes blinking.
+  /// Event added when the bumper finishes blinking.
   void onBlinked() {
     emit(SparkyBumperState.active);
   }

packages/pinball_components/lib/src/components/sparky_bumper/sparky_bumper.dart

@@ -141,6 +141,9 @@ class _SparkyBumperSpriteGroupComponent
   @override
   Future<void> onLoad() async {
     await super.onLoad();
+    // TODO(alestiago): Consider refactoring once the following is merged:
+    // https://github.com/flame-engine/flame/pull/1538
+    // ignore: public_member_api_docs
     parent.bloc.stream.listen((state) => current = state);
 
     final sprites = {

packages/pinball_components/test/src/components/dash_nest_bumper_test.dart

@@ -40,40 +40,6 @@ void main() {
       expect(game.contains(bumper), isTrue);
     });
 
-    flameTester.test('activate switches to active sprite', (game) async {
-      final bumper = DashNestBumper.main();
-      await game.ensureAdd(bumper);
-
-      final spriteGroupComponent = bumper.firstChild<SpriteGroupComponent>()!;
-
-      expect(
-        spriteGroupComponent.current,
-        equals(DashNestBumperSpriteState.inactive),
-      );
-
-      bumper.activate();
-
-      expect(
-        spriteGroupComponent.current,
-        equals(DashNestBumperSpriteState.active),
-      );
-    });
-
-    flameTester.test('deactivate switches to inactive sprite', (game) async {
-      final bumper = DashNestBumper.main();
-      await game.ensureAdd(bumper);
-
-      final spriteGroupComponent = bumper.firstChild<SpriteGroupComponent>()!
-        ..current = DashNestBumperSpriteState.active;
-
-      bumper.deactivate();
-
-      expect(
-        spriteGroupComponent.current,
-        equals(DashNestBumperSpriteState.inactive),
-      );
-    });
-
     flameTester.test('adds new children', (game) async {
       final component = Component();
       final dashNestBumper = DashNestBumper.a(

packages/pinball_flame/test/src/contact_behavior_test.dart

@@ -8,9 +8,7 @@ import 'package:pinball_flame/pinball_flame.dart';
 
 class _TestBodyComponent extends BodyComponent {
   @override
-  Body createBody() {
+  Body createBody() => world.createBody(BodyDef());
-    return world.createBody(BodyDef());
-  }
 }
 
 class _TestContactBehavior extends ContactBehavior {

test/game/components/alien_zone_test.dart

@@ -1,10 +1,10 @@
 // ignore_for_file: cascade_invocations
 
-import 'package:bloc_test/bloc_test.dart';
 import 'package:flame_test/flame_test.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:pinball/game/game.dart';
 import 'package:pinball_components/pinball_components.dart';
+import 'package:pinball_flame/pinball_flame.dart';
 
 import '../../helpers/helpers.dart';
 
@@ -24,10 +24,8 @@ void main() {
     flameTester.test(
       'loads correctly',
       (game) async {
-        final alienZone = AlienZone();
+        await game.addFromBlueprint(SparkyFireZone());
-        await game.ensureAdd(alienZone);
+        await game.ready();
-
-        expect(game.contains(alienZone), isTrue);
       },
     );
 
@@ -36,33 +34,15 @@ void main() {
         'two AlienBumper',
         (game) async {
           final alienZone = AlienZone();
-          await game.ensureAdd(alienZone);
+          await game.addFromBlueprint(alienZone);
+          await game.ready();
 
           expect(
-            alienZone.descendants().whereType<AlienBumper>().length,
+            game.descendants().whereType<AlienBumper>().length,
             equals(2),
           );
         },
       );
     });
-
-    group('bumpers', () {
-      late GameBloc gameBloc;
-
-      setUp(() {
-        gameBloc = MockGameBloc();
-        whenListen(
-          gameBloc,
-          const Stream<GameState>.empty(),
-          initialState: const GameState.initial(),
-        );
-      });
-
-      final flameBlocTester = FlameBlocTester<EmptyPinballTestGame, GameBloc>(
-        gameBuilder: EmptyPinballTestGame.new,
-        blocBuilder: () => gameBloc,
-        assets: assets,
-      );
-    });
   });
 }

test/game/components/flutter_forest_test.dart

@@ -80,72 +80,5 @@ void main() {
         },
       );
     });
-
-    group('bumpers', () {
-      late GameBloc gameBloc;
-
-      final flameBlocTester = FlameBlocTester<PinballGame, GameBloc>(
-        gameBuilder: () => EmptyPinballTestGame(assets: assets),
-        blocBuilder: () {
-          gameBloc = MockGameBloc();
-          const state = GameState.initial();
-          whenListen(gameBloc, Stream.value(state), initialState: state);
-          return gameBloc;
-        },
-        assets: assets,
-      );
-
-      flameBlocTester.testGameWidget(
-        'adds GameBonus.dashNest to the game when 3 bumpers are activated',
-        setUp: (game, _) async {
-          final ball = Ball(baseColor: const Color(0xFFFF0000));
-          final flutterForest = FlutterForest();
-          await game.ensureAddAll([flutterForest, ball]);
-
-          final bumpers = flutterForest.children.whereType<DashNestBumper>();
-          expect(bumpers.length, equals(3));
-          for (final bumper in bumpers) {
-            beginContact(game, bumper, ball);
-            await game.ready();
-
-            if (bumper == bumpers.last) {
-              verify(
-                () => gameBloc.add(const BonusActivated(GameBonus.dashNest)),
-              ).called(1);
-            } else {
-              verifyNever(
-                () => gameBloc.add(const BonusActivated(GameBonus.dashNest)),
-              );
-            }
-          }
-        },
-      );
-
-      flameBlocTester.testGameWidget(
-        'deactivates bumpers when 3 are active',
-        setUp: (game, _) async {
-          final ball = Ball(baseColor: const Color(0xFFFF0000));
-          final flutterForest = FlutterForest();
-          await game.ensureAddAll([flutterForest, ball]);
-
-          final bumpers = [
-            MockDashNestBumper(),
-            MockDashNestBumper(),
-            MockDashNestBumper(),
-          ];
-
-          for (final bumper in bumpers) {
-            flutterForest.controller.activateBumper(bumper);
-            await game.ready();
-
-            if (bumper == bumpers.last) {
-              for (final bumper in bumpers) {
-                verify(bumper.deactivate).called(1);
-              }
-            }
-          }
-        },
-      );
-    });
   });
 }

test/game/components/scoring_behavior_test.dart

@@ -11,12 +11,18 @@ import 'package:pinball_components/pinball_components.dart';
 
 import '../../helpers/helpers.dart';
 
+class _TestBodyComponent extends BodyComponent {
+  @override
+  Body createBody() => world.createBody(BodyDef());
+}
+
 void main() {
   group('ScoringBehavior', () {
     group('beginContact', () {
       late GameBloc bloc;
       late PinballAudio audio;
       late Ball ball;
+      late BodyComponent parent;
 
       setUp(() {
         audio = MockPinballAudio();
@@ -25,6 +31,8 @@ void main() {
         final ballBody = MockBody();
         when(() => ball.body).thenReturn(ballBody);
         when(() => ballBody.position).thenReturn(Vector2.all(4));
+
+        parent = _TestBodyComponent();
       });
 
       final flameBlocTester = FlameBlocTester<EmptyPinballTestGame, GameBloc>(
@@ -48,7 +56,8 @@ void main() {
         setUp: (game, tester) async {
           const points = 20;
           final scoringBehavior = ScoringBehavior(points: points);
-          await game.ensureAdd(scoringBehavior);
+          await parent.add(scoringBehavior);
+          await game.ensureAdd(parent);
 
           scoringBehavior.beginContact(ball, MockContact());
 
@@ -65,7 +74,8 @@ void main() {
         setUp: (game, tester) async {
           const points = 20;
           final scoringBehavior = ScoringBehavior(points: points);
-          await game.ensureAdd(scoringBehavior);
+          await parent.add(scoringBehavior);
+          await game.ensureAdd(parent);
 
           scoringBehavior.beginContact(ball, MockContact());
 
@@ -78,7 +88,8 @@ void main() {
         setUp: (game, tester) async {
           const points = 20;
           final scoringBehavior = ScoringBehavior(points: points);
-          await game.ensureAdd(scoringBehavior);
+          await parent.add(scoringBehavior);
+          await game.ensureAdd(parent);
 
           scoringBehavior.beginContact(ball, MockContact());
           await game.ready();

test/game/components/sparky_fire_zone_test.dart

@@ -1,6 +1,5 @@
 // ignore_for_file: cascade_invocations
 
-import 'package:bloc_test/bloc_test.dart';
 import 'package:flame_test/flame_test.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:mocktail/mocktail.dart';
@@ -71,54 +70,40 @@ void main() {
         },
       );
     });
-
-    group('bumpers', () {
-      late GameBloc gameBloc;
-
-      setUp(() {
-        gameBloc = MockGameBloc();
-        whenListen(
-          gameBloc,
-          const Stream<GameState>.empty(),
-          initialState: const GameState.initial(),
-        );
-      });
-
-      final flameBlocTester = FlameBlocTester<EmptyPinballTestGame, GameBloc>(
-        gameBuilder: EmptyPinballTestGame.new,
-        blocBuilder: () => gameBloc,
-        assets: assets,
-      );
-    });
   });
 
-  group('SparkyTurboChargeSensorBallContactCallback', () {
+  group('SparkyComputerSensor', () {
     flameTester.test('calls turboCharge', (game) async {
+      final sensor = SparkyComputerSensor();
       final ball = MockControlledBall();
       final controller = MockBallController();
       when(() => ball.controller).thenReturn(controller);
-      when(() => ball.gameRef).thenReturn(game);
       when(controller.turboCharge).thenAnswer((_) async {});
 
+      await game.ensureAddAll([
+        sensor,
+        SparkyAnimatronic(),
+      ]);
+
+      sensor.beginContact(ball, MockContact());
+
       verify(() => ball.controller.turboCharge()).called(1);
     });
 
     flameTester.test('plays SparkyAnimatronic', (game) async {
+      final sensor = SparkyComputerSensor();
+      final sparkyAnimatronic = SparkyAnimatronic();
       final ball = MockControlledBall();
       final controller = MockBallController();
       when(() => ball.controller).thenReturn(controller);
-      when(() => ball.gameRef).thenReturn(game);
       when(controller.turboCharge).thenAnswer((_) async {});
-
+      await game.ensureAddAll([
-      final sparkyFireZone = SparkyFireZone();
+        sensor,
-      await game.addFromBlueprint(sparkyFireZone);
+        sparkyAnimatronic,
-      await game.ready();
+      ]);
-
-      final sparkyAnimatronic =
-          sparkyFireZone.components.whereType<SparkyAnimatronic>().single;
 
       expect(sparkyAnimatronic.playing, isFalse);
-
+      sensor.beginContact(ball, MockContact());
       expect(sparkyAnimatronic.playing, isTrue);
     });
   });

test/game/pinball_game_test.dart

@@ -66,6 +66,8 @@ void main() {
 
   group('PinballGame', () {
     group('components', () {
+      // TODO(alestiago): tests that Blueprints get added once the Blueprint
+      // class is removed.
       flameTester.test(
         'has only one BottomWall',
         (game) async {
@@ -97,14 +99,6 @@ void main() {
         );
       });
 
-      flameTester.test(
-        'one AlienZone',
-        (game) async {
-          await game.ready();
-          expect(game.children.whereType<AlienZone>().length, equals(1));
-        },
-      );
-
       group('controller', () {
         // TODO(alestiago): Write test to be controller agnostic.
         group('listenWhen', () {