Merge branch 'main' into feat/plunger

lib/game/bloc/game_state.dart

@@ -26,6 +26,9 @@ class GameState extends Equatable {
   /// Determines when the game is over.
   bool get isGameOver => balls == 0;
 
+  /// Determines when the player has only one ball left.
+  bool get isLastBall => balls == 1;
+
   GameState copyWith({
     int? score,
     int? balls,

lib/game/components/anchor.dart

@@ -0,0 +1,32 @@
+import 'package:flame_forge2d/flame_forge2d.dart';
+
+/// {@template anchor}
+/// Non visual [BodyComponent] used to hold a [BodyType.dynamic] in [Joint]s
+/// with this [BodyType.static].
+///
+/// It is recommended to [_position] the anchor first and then use the body
+/// position as the anchor point when initializing a [JointDef].
+///
+/// ```dart
+/// initialize(
+///   dynamicBody.body,
+///   anchor.body,
+///   anchor.body.position,
+/// );
+/// ```
+/// {@endtemplate}
+class Anchor extends BodyComponent {
+  /// {@macro anchor}
+  Anchor({
+    required Vector2 position,
+  }) : _position = position;
+
+  final Vector2 _position;
+
+  @override
+  Body createBody() {
+    final bodyDef = BodyDef()..position = _position;
+
+    return world.createBody(bodyDef);
+  }
+}

lib/game/components/ball.dart

@@ -28,4 +28,15 @@ class Ball extends BodyComponent<PinballGame>
 
     return world.createBody(bodyDef)..createFixture(fixtureDef);
   }
+
+  void lost() {
+    shouldRemove = true;
+
+    final bloc = gameRef.read<GameBloc>()..add(const BallLost());
+
+    final shouldBallRespwan = !bloc.state.isLastBall;
+    if (shouldBallRespwan) {
+      gameRef.spawnBall();
+    }
+  }
 }

lib/game/components/components.dart

@@ -1,3 +1,5 @@
+export 'anchor.dart';
 export 'ball.dart';
 export 'plunger.dart';
 export 'score_points.dart';
+export 'wall.dart';

lib/game/components/score_points.dart

@@ -17,10 +17,10 @@ class BallScorePointsCallback extends ContactCallback<Ball, ScorePoints> {
   @override
   void begin(
     Ball ball,
-    ScorePoints hasPoints,
+    ScorePoints scorePoints,
     Contact _,
   ) {
-    ball.gameRef.read<GameBloc>().add(Scored(points: hasPoints.points));
+    ball.gameRef.read<GameBloc>().add(Scored(points: scorePoints.points));
   }
 
   // TODO(alestiago): remove once this issue is closed.

lib/game/components/wall.dart

@@ -0,0 +1,51 @@
+// ignore_for_file: avoid_renaming_method_parameters
+
+import 'package:flame_forge2d/flame_forge2d.dart';
+import 'package:pinball/game/components/components.dart';
+
+class Wall extends BodyComponent {
+  Wall({
+    required this.start,
+    required this.end,
+  });
+
+  final Vector2 start;
+  final Vector2 end;
+
+  @override
+  Body createBody() {
+    final shape = EdgeShape()..set(start, end);
+
+    final fixtureDef = FixtureDef(shape)
+      ..restitution = 0.0
+      ..friction = 0.3;
+
+    final bodyDef = BodyDef()
+      ..userData = this
+      ..position = Vector2.zero()
+      ..type = BodyType.static;
+
+    return world.createBody(bodyDef)..createFixture(fixtureDef);
+  }
+}
+
+class BottomWall extends Wall {
+  BottomWall(Forge2DGame game)
+      : super(
+          start: game.screenToWorld(game.camera.viewport.effectiveSize),
+          end: Vector2(
+            0,
+            game.screenToWorld(game.camera.viewport.effectiveSize).y,
+          ),
+        );
+}
+
+class BottomWallBallContactCallback extends ContactCallback<Ball, BottomWall> {
+  @override
+  void begin(Ball ball, BottomWall wall, Contact contact) {
+    ball.lost();
+  }
+
+  @override
+  void end(_, __, ___) {}
+}

lib/game/game.dart

@@ -1,4 +1,4 @@
 export 'bloc/game_bloc.dart';
 export 'components/components.dart';
 export 'pinball_game.dart';
-export 'view/pinball_game_page.dart';
+export 'view/view.dart';

lib/game/pinball_game.dart

@@ -3,8 +3,25 @@ import 'package:flame_forge2d/flame_forge2d.dart';
 import 'package:pinball/game/game.dart';
 
 class PinballGame extends Forge2DGame with FlameBloc {
+  void spawnBall() {
+    add(Ball(position: ballStartingPosition));
+  }
+
+  // TODO(erickzanardo): Change to the plumber position
+  late final ballStartingPosition = screenToWorld(
+        Vector2(
+          camera.viewport.effectiveSize.x / 2,
+          camera.viewport.effectiveSize.y - 20,
+        ),
+      ) -
+      Vector2(0, -20);
+
   @override
   Future<void> onLoad() async {
+    spawnBall();
     addContactCallback(BallScorePointsCallback());
+
+    await add(BottomWall(this));
+    addContactCallback(BottomWallBallContactCallback());
   }
 }

lib/game/view/pinball_game_page.dart

@@ -1,16 +1,45 @@
 import 'package:flame/game.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:pinball/game/game.dart';
 
 class PinballGamePage extends StatelessWidget {
   const PinballGamePage({Key? key}) : super(key: key);
 
   static Route route() {
-    return MaterialPageRoute<void>(builder: (_) => const PinballGamePage());
+    return MaterialPageRoute<void>(
+      builder: (_) {
+        return BlocProvider(
+          create: (_) => GameBloc(),
+          child: const PinballGamePage(),
+        );
+      },
+    );
   }
 
   @override
   Widget build(BuildContext context) {
-    return GameWidget(game: PinballGame());
+    return const PinballGameView();
+  }
+}
+
+class PinballGameView extends StatelessWidget {
+  const PinballGameView({Key? key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return BlocListener<GameBloc, GameState>(
+      listener: (context, state) {
+        if (state.isGameOver) {
+          showDialog<void>(
+            context: context,
+            builder: (_) {
+              return const GameOverDialog();
+            },
+          );
+        }
+      },
+      child: GameWidget<PinballGame>(game: PinballGame()),
+    );
   }
 }

lib/game/view/view.dart

@@ -0,0 +1,2 @@
+export 'pinball_game_page.dart';
+export 'widgets/widgets.dart';

lib/game/view/widgets/game_over_dialog.dart

@@ -0,0 +1,18 @@
+import 'package:flutter/material.dart';
+
+class GameOverDialog extends StatelessWidget {
+  const GameOverDialog({Key? key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return const Dialog(
+      child: SizedBox(
+        width: 200,
+        height: 200,
+        child: Center(
+          child: Text('Game Over'),
+        ),
+      ),
+    );
+  }
+}

lib/game/view/widgets/widgets.dart

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

test/game/bloc/game_state_test.dart

@@ -62,6 +62,32 @@ void main() {
       });
     });
 
+    group('isLastBall', () {
+      test(
+        'is true '
+        'when there is only one ball left',
+        () {
+          const gameState = GameState(
+            balls: 1,
+            score: 0,
+          );
+          expect(gameState.isLastBall, isTrue);
+        },
+      );
+
+      test(
+        'is false '
+        'when there are more balls left',
+        () {
+          const gameState = GameState(
+            balls: 2,
+            score: 0,
+          );
+          expect(gameState.isLastBall, isFalse);
+        },
+      );
+    });
+
     group('copyWith', () {
       test(
         'throws AssertionError '

test/game/components/anchor_test.dart

@@ -0,0 +1,60 @@
+// ignore_for_file: cascade_invocations
+
+import 'package:flame_forge2d/flame_forge2d.dart';
+import 'package:flame_test/flame_test.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:pinball/game/game.dart';
+
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+
+  group('Anchor', () {
+    final flameTester = FlameTester(PinballGame.new);
+
+    flameTester.test(
+      'loads correctly',
+      (game) async {
+        final anchor = Anchor(position: Vector2.zero());
+        await game.ensureAdd(anchor);
+
+        expect(game.contains(anchor), isTrue);
+      },
+    );
+
+    group('body', () {
+      flameTester.test(
+        'positions correctly',
+        (game) async {
+          final position = Vector2.all(10);
+          final anchor = Anchor(position: position);
+          await game.ensureAdd(anchor);
+          game.contains(anchor);
+
+          expect(anchor.body.position, position);
+        },
+      );
+
+      flameTester.test(
+        'is static',
+        (game) async {
+          final anchor = Anchor(position: Vector2.zero());
+          await game.ensureAdd(anchor);
+
+          expect(anchor.body.bodyType, equals(BodyType.static));
+        },
+      );
+    });
+
+    group('fixtures', () {
+      flameTester.test(
+        'has none',
+        (game) async {
+          final anchor = Anchor(position: Vector2.zero());
+          await game.ensureAdd(anchor);
+
+          expect(anchor.body.fixtures, isEmpty);
+        },
+      );
+    });
+  });
+}

test/game/components/ball_test.dart

@@ -1,10 +1,14 @@
 // ignore_for_file: cascade_invocations
 
+import 'package:bloc_test/bloc_test.dart';
 import 'package:flame_forge2d/flame_forge2d.dart';
 import 'package:flame_test/flame_test.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:mocktail/mocktail.dart';
 import 'package:pinball/game/game.dart';
 
+import '../../helpers/helpers.dart';
+
 void main() {
   TestWidgetsFlutterBinding.ensureInitialized();
 
@@ -79,5 +83,71 @@ void main() {
         },
       );
     });
+
+    group('resetting a ball', () {
+      late GameBloc gameBloc;
+
+      setUp(() {
+        gameBloc = MockGameBloc();
+        whenListen(
+          gameBloc,
+          const Stream<GameState>.empty(),
+          initialState: const GameState.initial(),
+        );
+      });
+
+      final tester = flameBlocTester(
+        gameBlocBuilder: () {
+          return gameBloc;
+        },
+      );
+
+      tester.widgetTest(
+        'adds BallLost to GameBloc',
+        (game, tester) async {
+          await game.ready();
+
+          game.children.whereType<Ball>().first.lost();
+          await tester.pump();
+
+          verify(() => gameBloc.add(const BallLost())).called(1);
+        },
+      );
+
+      tester.widgetTest(
+        'resets the ball if the game is not over',
+        (game, tester) async {
+          await game.ready();
+
+          game.children.whereType<Ball>().first.removeFromParent();
+          await game.ready(); // Making sure that all additions are done
+
+          expect(
+            game.children.whereType<Ball>().length,
+            equals(1),
+          );
+        },
+      );
+
+      tester.widgetTest(
+        'no ball is added on game over',
+        (game, tester) async {
+          whenListen(
+            gameBloc,
+            const Stream<GameState>.empty(),
+            initialState: const GameState(score: 10, balls: 1),
+          );
+          await game.ready();
+
+          game.children.whereType<Ball>().first.removeFromParent();
+          await tester.pump();
+
+          expect(
+            game.children.whereType<Ball>().length,
+            equals(0),
+          );
+        },
+      );
+    });
   });
 }

test/game/components/wall_test.dart

@@ -0,0 +1,122 @@
+// ignore_for_file: cascade_invocations
+
+import 'package:flame_forge2d/flame_forge2d.dart';
+import 'package:flame_test/flame_test.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:mocktail/mocktail.dart';
+import 'package:pinball/game/game.dart';
+
+import '../../helpers/helpers.dart';
+
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+
+  group('Wall', () {
+    group('BottomWallBallContactCallback', () {
+      test(
+        'removes the ball on begin contact when the wall is a bottom one',
+        () {
+          final game = MockPinballGame();
+          final wall = MockBottomWall();
+          final ball = MockBall();
+
+          when(() => ball.gameRef).thenReturn(game);
+
+          BottomWallBallContactCallback()
+            // Remove once https://github.com/flame-engine/flame/pull/1415
+            // is merged
+            ..end(MockBall(), MockBottomWall(), MockContact())
+            ..begin(ball, wall, MockContact());
+
+          verify(ball.lost).called(1);
+        },
+      );
+    });
+    final flameTester = FlameTester(PinballGame.new);
+
+    flameTester.test(
+      'loads correctly',
+      (game) async {
+        final wall = Wall(
+          start: Vector2.zero(),
+          end: Vector2(100, 0),
+        );
+        await game.ensureAdd(wall);
+
+        expect(game.contains(wall), isTrue);
+      },
+    );
+
+    group('body', () {
+      flameTester.test(
+        'positions correctly',
+        (game) async {
+          final wall = Wall(
+            start: Vector2.zero(),
+            end: Vector2(100, 0),
+          );
+          await game.ensureAdd(wall);
+          game.contains(wall);
+
+          expect(wall.body.position, Vector2.zero());
+        },
+      );
+
+      flameTester.test(
+        'is static',
+        (game) async {
+          final wall = Wall(
+            start: Vector2.zero(),
+            end: Vector2(100, 0),
+          );
+          await game.ensureAdd(wall);
+
+          expect(wall.body.bodyType, equals(BodyType.static));
+        },
+      );
+    });
+
+    group('first fixture', () {
+      flameTester.test(
+        'exists',
+        (game) async {
+          final wall = Wall(
+            start: Vector2.zero(),
+            end: Vector2(100, 0),
+          );
+          await game.ensureAdd(wall);
+
+          expect(wall.body.fixtures[0], isA<Fixture>());
+        },
+      );
+
+      flameTester.test(
+        'has restitution equals 0',
+        (game) async {
+          final wall = Wall(
+            start: Vector2.zero(),
+            end: Vector2(100, 0),
+          );
+          await game.ensureAdd(wall);
+
+          final fixture = wall.body.fixtures[0];
+          expect(fixture.restitution, equals(0));
+        },
+      );
+
+      flameTester.test(
+        'has friction',
+        (game) async {
+          final wall = Wall(
+            start: Vector2.zero(),
+            end: Vector2(100, 0),
+          );
+          await game.ensureAdd(wall);
+
+          final fixture = wall.body.fixtures[0];
+          expect(fixture.friction, greaterThan(0));
+        },
+      );
+    });
+  });
+}

test/game/view/pinball_game_page_test.dart

@@ -1,4 +1,6 @@
+import 'package:bloc_test/bloc_test.dart';
 import 'package:flame/game.dart';
+import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:pinball/game/game.dart';
 
@@ -6,9 +8,80 @@ import '../../helpers/helpers.dart';
 
 void main() {
   group('PinballGamePage', () {
-    testWidgets('renders single GameWidget with PinballGame', (tester) async {
+    testWidgets('renders PinballGameView', (tester) async {
-      await tester.pumpApp(const PinballGamePage());
+      final gameBloc = MockGameBloc();
-      expect(find.byType(GameWidget<PinballGame>), findsOneWidget);
+      whenListen(
+        gameBloc,
+        Stream.value(const GameState.initial()),
+        initialState: const GameState.initial(),
+      );
+
+      await tester.pumpApp(const PinballGamePage(), gameBloc: gameBloc);
+      expect(find.byType(PinballGameView), findsOneWidget);
     });
+
+    testWidgets('route returns a valid navigation route', (tester) async {
+      await tester.pumpApp(
+        Scaffold(
+          body: Builder(
+            builder: (context) {
+              return ElevatedButton(
+                onPressed: () {
+                  Navigator.of(context).push<void>(PinballGamePage.route());
+                },
+                child: const Text('Tap me'),
+              );
+            },
+          ),
+        ),
+      );
+
+      await tester.tap(find.text('Tap me'));
+
+      // We can't use pumpAndSettle here because the page renders a Flame game
+      // which is an infinity animation, so it will timeout
+      await tester.pump(); // Runs the button action
+      await tester.pump(); // Runs the navigation
+
+      expect(find.byType(PinballGamePage), findsOneWidget);
+    });
+  });
+
+  group('PinballGameView', () {
+    testWidgets('renders game', (tester) async {
+      final gameBloc = MockGameBloc();
+      whenListen(
+        gameBloc,
+        Stream.value(const GameState.initial()),
+        initialState: const GameState.initial(),
+      );
+
+      await tester.pumpApp(const PinballGameView(), gameBloc: gameBloc);
+      expect(
+        find.byWidgetPredicate((w) => w is GameWidget<PinballGame>),
+        findsOneWidget,
+      );
+    });
+
+    testWidgets(
+      'renders a game over dialog when the user has lost',
+      (tester) async {
+        final gameBloc = MockGameBloc();
+        const state = GameState(score: 0, balls: 0);
+        whenListen(
+          gameBloc,
+          Stream.value(state),
+          initialState: state,
+        );
+
+        await tester.pumpApp(const PinballGameView(), gameBloc: gameBloc);
+        await tester.pump();
+
+        expect(
+          find.text('Game Over'),
+          findsOneWidget,
+        );
+      },
+    );
   });
 }

test/helpers/builders.dart

@@ -0,0 +1,17 @@
+import 'package:flame_test/flame_test.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:pinball/game/game.dart';
+
+FlameTester flameBlocTester({required GameBloc Function() gameBlocBuilder}) {
+  return FlameTester(
+    PinballGame.new,
+    pumpWidget: (gameWidget, tester) async {
+      await tester.pumpWidget(
+        BlocProvider.value(
+          value: gameBlocBuilder(),
+          child: gameWidget,
+        ),
+      );
+    },
+  );
+}

test/helpers/helpers.dart

@@ -5,4 +5,6 @@
 // license that can be found in the LICENSE file or at
 // https://opensource.org/licenses/MIT.
 
+export 'builders.dart';
+export 'mocks.dart';
 export 'pump_app.dart';

test/helpers/mocks.dart

@@ -0,0 +1,15 @@
+import 'package:flame_forge2d/flame_forge2d.dart';
+import 'package:mocktail/mocktail.dart';
+import 'package:pinball/game/game.dart';
+
+class MockPinballGame extends Mock implements PinballGame {}
+
+class MockWall extends Mock implements Wall {}
+
+class MockBottomWall extends Mock implements BottomWall {}
+
+class MockBall extends Mock implements Ball {}
+
+class MockContact extends Mock implements Contact {}
+
+class MockGameBloc extends Mock implements GameBloc {}

test/helpers/pump_app.dart

@@ -6,15 +6,20 @@
 // https://opensource.org/licenses/MIT.
 
 import 'package:flutter/material.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:flutter_localizations/flutter_localizations.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:mockingjay/mockingjay.dart';
+import 'package:pinball/game/game.dart';
 import 'package:pinball/l10n/l10n.dart';
 
+import 'helpers.dart';
+
 extension PumpApp on WidgetTester {
   Future<void> pumpApp(
     Widget widget, {
     MockNavigator? navigator,
+    GameBloc? gameBloc,
   }) {
     return pumpWidget(
       MaterialApp(
@@ -23,9 +28,12 @@ extension PumpApp on WidgetTester {
           GlobalMaterialLocalizations.delegate,
         ],
         supportedLocales: AppLocalizations.supportedLocales,
-        home: navigator != null
+        home: BlocProvider.value(
-            ? MockNavigatorProvider(navigator: navigator, child: widget)
+          value: gameBloc ?? MockGameBloc(),
-            : widget,
+          child: navigator != null
+              ? MockNavigatorProvider(navigator: navigator, child: widget)
+              : widget,
+        ),
       ),
     );
   }