feat: create BonusAnimation

lib/game/view/widgets/bonus_animation.dart

@@ -0,0 +1,70 @@
+// ignore_for_file: public_member_api_docs
+
+import 'package:flame/flame.dart';
+import 'package:flame/image_composition.dart';
+import 'package:flame/sprite.dart';
+import 'package:flame/widgets.dart';
+import 'package:flutter/material.dart' hide Image;
+import 'package:pinball/gen/assets.gen.dart';
+
+class BonusAnimation extends StatelessWidget {
+  const BonusAnimation._(
+    this.image, {
+    this.onCompleted,
+    Key? key,
+  }) : super(key: key);
+
+  BonusAnimation.dashNest({
+    Key? key,
+    VoidCallback? onCompleted,
+  }) : this._(
+          Assets.images.bonusAnimation.dashNest.keyName,
+          onCompleted: onCompleted,
+          key: key,
+        );
+
+  final String image;
+
+  final VoidCallback? onCompleted;
+
+  @override
+  Widget build(BuildContext context) {
+    Flame.images.prefix = '';
+
+    return FutureBuilder<Image>(
+      future: Flame.images.load(Assets.images.bonusAnimation.dashNest.keyName),
+      builder: (BuildContext context, AsyncSnapshot<Image> snapshot) {
+        if (snapshot.hasData) {
+          final spriteSheet = SpriteSheet.fromColumnsAndRows(
+            image: snapshot.data!,
+            columns: 8,
+            rows: 9,
+          );
+          final animation = spriteSheet.createAnimation(
+            row: 0,
+            stepTime: 1 / 24,
+            to: spriteSheet.rows * spriteSheet.columns,
+            loop: false,
+          );
+
+          Future<void>.delayed(
+            Duration(seconds: animation.totalDuration().ceil()),
+            () {
+              onCompleted?.call();
+            },
+          );
+
+          return SizedBox(
+            width: double.infinity,
+            height: double.infinity,
+            child: SpriteAnimationWidget(
+              animation: animation,
+            ),
+          );
+        }
+
+        return const SizedBox();
+      },
+    );
+  }
+}

test/game/view/widgets/bonus_animation_test.dart

@@ -0,0 +1,136 @@
+import 'dart:async';
+import 'dart:typed_data';
+
+import 'dart:ui' as ui;
+
+import 'package:flame/assets.dart';
+import 'package:flame/flame.dart';
+import 'package:flame/widgets.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:mocktail/mocktail.dart';
+import 'package:pinball/game/view/widgets/bonus_animation.dart';
+
+class MockImages extends Mock implements Images {}
+
+class MockImage extends Mock implements ui.Image {}
+
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+  final image = decodeImageFromList(Uint8List.fromList(transparentImage));
+  late Images images;
+
+  setUp(() {
+    images = MockImages();
+    when(() => images.load(any())).thenAnswer((_) => image);
+
+    Flame.images = images;
+  });
+
+  testWidgets('renders SpriteAnimationWidget', (tester) async {
+    await tester.runAsync(() async {
+      await tester.pumpWidget(
+        MaterialApp(
+          home: Scaffold(
+            body: BonusAnimation.dashNest(),
+          ),
+        ),
+      );
+      await tester.pump();
+
+      expect(find.byType(SpriteAnimationWidget), findsOneWidget);
+    });
+  });
+
+  testWidgets('called onCompleted callback at the end of animation ',
+      (tester) async {
+    final completer = Completer<void>();
+
+    await tester.runAsync(() async {
+      await tester.pumpWidget(
+        MaterialApp(
+          home: Scaffold(
+            body: BonusAnimation.dashNest(
+              onCompleted: completer.complete,
+            ),
+          ),
+        ),
+      );
+
+      await tester.pump();
+
+      await Future<void>.delayed(const Duration(seconds: 4));
+
+      await tester.pump();
+
+      expect(completer.isCompleted, isTrue);
+    });
+  });
+}
+
+const transparentImage = <int>[
+  0x89,
+  0x50,
+  0x4E,
+  0x47,
+  0x0D,
+  0x0A,
+  0x1A,
+  0x0A,
+  0x00,
+  0x00,
+  0x00,
+  0x0D,
+  0x49,
+  0x48,
+  0x44,
+  0x52,
+  0x00,
+  0x00,
+  0x00,
+  0x01,
+  0x00,
+  0x00,
+  0x00,
+  0x01,
+  0x08,
+  0x06,
+  0x00,
+  0x00,
+  0x00,
+  0x1F,
+  0x15,
+  0xC4,
+  0x89,
+  0x00,
+  0x00,
+  0x00,
+  0x0A,
+  0x49,
+  0x44,
+  0x41,
+  0x54,
+  0x78,
+  0x9C,
+  0x63,
+  0x00,
+  0x01,
+  0x00,
+  0x00,
+  0x05,
+  0x00,
+  0x01,
+  0x0D,
+  0x0A,
+  0x2D,
+  0xB4,
+  0x00,
+  0x00,
+  0x00,
+  0x00,
+  0x49,
+  0x45,
+  0x4E,
+  0x44,
+  0xAE,
+];