feat: add sparky bumpers

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

@@ -19,3 +19,4 @@ export 'shapes/shapes.dart';
 export 'spaceship.dart';
 export 'spaceship_rail.dart';
 export 'spaceship_ramp.dart';
+export 'sparky_bumper.dart';

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

@@ -0,0 +1,125 @@
+import 'dart:math' as math;
+
+import 'package:flame/components.dart';
+import 'package:flame_forge2d/flame_forge2d.dart';
+import 'package:pinball_components/pinball_components.dart';
+
+/// {@template sparky_bumper}
+/// Bumper for Sparky area.
+/// {@endtemplate}
+// TODO(ruimiguel): refactor later to unify with DashBumpers.
+class SparkyBumper extends BodyComponent with InitialPosition {
+  /// {@macro sparky_bumper}
+  SparkyBumper._({
+    required double majorRadius,
+    required double minorRadius,
+    required String activeAssetPath,
+    required String inactiveAssetPath,
+    required SpriteComponent spriteComponent,
+  })  : _majorRadius = majorRadius,
+        _minorRadius = minorRadius,
+        _activeAssetPath = activeAssetPath,
+        _inactiveAssetPath = inactiveAssetPath,
+        _spriteComponent = spriteComponent;
+
+  /// {@macro sparky_bumper}
+  SparkyBumper.a()
+      : this._(
+          majorRadius: 2.9,
+          minorRadius: 2.1,
+          activeAssetPath: Assets.images.sparkyBumper.a.active.keyName,
+          inactiveAssetPath: Assets.images.sparkyBumper.a.inactive.keyName,
+          spriteComponent: SpriteComponent(
+            anchor: Anchor.center,
+            position: Vector2(0, -0.25),
+          ),
+        );
+
+  /// {@macro sparky_bumper}
+  SparkyBumper.b()
+      : this._(
+          majorRadius: 2.85,
+          minorRadius: 2,
+          activeAssetPath: Assets.images.sparkyBumper.b.active.keyName,
+          inactiveAssetPath: Assets.images.sparkyBumper.b.inactive.keyName,
+          spriteComponent: SpriteComponent(
+            anchor: Anchor.center,
+            position: Vector2(0, -0.35),
+          ),
+        );
+
+  /// {@macro sparky_bumper}
+  SparkyBumper.c()
+      : this._(
+          majorRadius: 3,
+          minorRadius: 2.2,
+          activeAssetPath: Assets.images.sparkyBumper.c.active.keyName,
+          inactiveAssetPath: Assets.images.sparkyBumper.c.inactive.keyName,
+          spriteComponent: SpriteComponent(
+            anchor: Anchor.center,
+            position: Vector2(0, -0.4),
+          ),
+        );
+
+  final double _majorRadius;
+  final double _minorRadius;
+  final String _activeAssetPath;
+  late final Sprite _activeSprite;
+  final String _inactiveAssetPath;
+  late final Sprite _inactiveSprite;
+  final SpriteComponent _spriteComponent;
+
+  @override
+  Future<void> onLoad() async {
+    await super.onLoad();
+    await _loadSprites();
+
+    // TODO(erickzanardo): Look into using onNewState instead.
+    // Currently doing: onNewState(gameRef.read<GameState>()) will throw an
+    // `Exception: build context is not available yet`
+    deactivate();
+    await add(_spriteComponent);
+  }
+
+  @override
+  Body createBody() {
+    renderBody = false;
+
+    final shape = EllipseShape(
+      center: Vector2.zero(),
+      majorRadius: _majorRadius,
+      minorRadius: _minorRadius,
+    )..rotate(math.pi / 1.9);
+    final fixtureDef = FixtureDef(shape)
+      ..friction = 0
+      ..restitution = 4;
+
+    final bodyDef = BodyDef()
+      ..position = initialPosition
+      ..userData = this;
+
+    return world.createBody(bodyDef)..createFixture(fixtureDef);
+  }
+
+  Future<void> _loadSprites() async {
+    // TODO(alestiago): I think ideally we would like to do:
+    // Sprite(path).load so we don't require to store the activeAssetPath and
+    // the inactive assetPath.
+    _inactiveSprite = await gameRef.loadSprite(_inactiveAssetPath);
+    _activeSprite = await gameRef.loadSprite(_activeAssetPath);
+  }
+
+  /// Activates the [DashNestBumper].
+  void activate() {
+    _spriteComponent
+      ..sprite = _activeSprite
+      ..size = _activeSprite.originalSize / 10;
+  }
+
+  /// Deactivates the [DashNestBumper].
+  void deactivate() {
+    _spriteComponent
+      ..sprite = _inactiveSprite
+      ..size = _inactiveSprite.originalSize / 10;
+  }
+}

packages/pinball_components/pubspec.yaml

@@ -39,6 +39,9 @@ flutter:
     - assets/images/spaceship/ramp/
     - assets/images/chrome_dino/
     - assets/images/kicker/
+    - assets/images/sparky_bumper/a/
+    - assets/images/sparky_bumper/b/
+    - assets/images/sparky_bumper/c/
 
 flutter_gen:
   line_length: 80

packages/pinball_components/sandbox/lib/main.dart

@@ -21,5 +21,6 @@ void main() {
   addChromeDinoStories(dashbook);
   addDashNestBumperStories(dashbook);
   addKickerStories(dashbook);
+  addSparkyBumperStories(dashbook);
   runApp(dashbook);
 }

packages/pinball_components/sandbox/lib/stories/sparky_bumper/sparky_bumper_game.dart

@@ -0,0 +1,47 @@
+import 'dart:async';
+
+import 'package:flame/extensions.dart';
+import 'package:pinball_components/pinball_components.dart';
+import 'package:sandbox/common/common.dart';
+import 'package:sandbox/stories/ball/basic_ball_game.dart';
+
+class SparkyBumperGame extends BasicBallGame {
+  SparkyBumperGame({
+    required this.trace,
+  }) : super(color: const Color(0xFF0000FF));
+
+  static const info = '''
+    Shows how a SparkyBumper is rendered.
+
+    Activate the "trace" parameter to overlay the body.
+''';
+
+  final bool trace;
+
+  @override
+  Future<void> onLoad() async {
+    await super.onLoad();
+
+    final center = screenToWorld(camera.viewport.canvasSize! / 2);
+    final sparkyBumperA = SparkyBumper.a()
+      ..initialPosition = Vector2(center.x - 20, center.y - 20)
+      ..priority = 1;
+    final sparkyBumperB = SparkyBumper.b()
+      ..initialPosition = Vector2(center.x - 10, center.y + 10)
+      ..priority = 1;
+    final sparkyBumperC = SparkyBumper.c()
+      ..initialPosition = Vector2(center.x + 20, center.y)
+      ..priority = 1;
+    await addAll([
+      sparkyBumperA,
+      sparkyBumperB,
+      sparkyBumperC,
+    ]);
+
+    if (trace) {
+      sparkyBumperA.trace();
+      sparkyBumperB.trace();
+      sparkyBumperC.trace();
+    }
+  }
+}

packages/pinball_components/sandbox/lib/stories/sparky_bumper/stories.dart

@@ -0,0 +1,17 @@
+import 'package:dashbook/dashbook.dart';
+import 'package:flame/game.dart';
+import 'package:sandbox/common/common.dart';
+import 'package:sandbox/stories/sparky_bumper/sparky_bumper_game.dart';
+
+void addSparkyBumperStories(Dashbook dashbook) {
+  dashbook.storiesOf('Sparky Bumpers').add(
+        'Basic',
+        (context) => GameWidget(
+          game: SparkyBumperGame(
+            trace: context.boolProperty('Trace', true),
+          ),
+        ),
+        codeLink: buildSourceLink('sparky_bumper/basic.dart'),
+        info: SparkyBumperGame.info,
+      );
+}

packages/pinball_components/sandbox/lib/stories/stories.dart

@@ -6,3 +6,4 @@ export 'effects/stories.dart';
 export 'flipper/stories.dart';
 export 'layer/stories.dart';
 export 'spaceship/stories.dart';
+export 'sparky_bumper/stories.dart';

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

@@ -0,0 +1,74 @@
+// ignore_for_file: cascade_invocations
+
+import 'package:flame/components.dart';
+import 'package:flame_test/flame_test.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:pinball_components/pinball_components.dart';
+
+import '../../helpers/helpers.dart';
+
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+  final flameTester = FlameTester(TestGame.new);
+
+  group('SparkyBumper', () {
+    flameTester.test('"a" loads correctly', (game) async {
+      final bumper = SparkyBumper.a();
+      await game.ensureAdd(bumper);
+
+      expect(game.contains(bumper), isTrue);
+    });
+
+    flameTester.test('"b" loads correctly', (game) async {
+      final bumper = SparkyBumper.b();
+      await game.ensureAdd(bumper);
+      expect(game.contains(bumper), isTrue);
+    });
+
+    flameTester.test('"c" loads correctly', (game) async {
+      final bumper = SparkyBumper.c();
+      await game.ensureAdd(bumper);
+      expect(game.contains(bumper), isTrue);
+    });
+
+    flameTester.test('activate returns normally', (game) async {
+      final bumper = SparkyBumper.a();
+      await game.ensureAdd(bumper);
+
+      expect(bumper.activate, returnsNormally);
+    });
+
+    flameTester.test('deactivate returns normally', (game) async {
+      final bumper = SparkyBumper.a();
+      await game.ensureAdd(bumper);
+
+      expect(bumper.deactivate, returnsNormally);
+    });
+
+    flameTester.test('changes sprite', (game) async {
+      final bumper = SparkyBumper.a();
+      await game.ensureAdd(bumper);
+
+      final spriteComponent = bumper.firstChild<SpriteComponent>()!;
+
+      final deactivatedSprite = spriteComponent.sprite;
+      bumper.activate();
+      expect(
+        spriteComponent.sprite,
+        isNot(equals(deactivatedSprite)),
+      );
+
+      final activatedSprite = spriteComponent.sprite;
+      bumper.deactivate();
+      expect(
+        spriteComponent.sprite,
+        isNot(equals(activatedSprite)),
+      );
+
+      expect(
+        activatedSprite,
+        isNot(equals(deactivatedSprite)),
+      );
+    });
+  });
+}