fix: simplify BonusAnimation

lib/game/view/widgets/bonus_animation.dart

@@ -1,7 +1,6 @@
 // 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;
@@ -45,18 +44,20 @@ class BonusAnimation extends StatelessWidget {
 
   final VoidCallback? onCompleted;
 
-  @override
-  Widget build(BuildContext context) {
+  static Future<void> loadAssets() {
     Flame.images.prefix = '';
+    return Flame.images.loadAll([
+      Assets.images.bonusAnimation.dashNest.keyName,
+      Assets.images.bonusAnimation.sparkyTurboCharge.keyName,
+      Assets.images.bonusAnimation.dino.keyName,
+      // TODO: add google word animation asset here
+    ]);
+  }
 
-    // TODO(arturplaczek): Load assets in parent widget, remove future builder
-    // and user image from cache.
-    return FutureBuilder<Image>(
-      future: Flame.images.load(imagePath),
-      builder: (BuildContext context, AsyncSnapshot<Image> snapshot) {
-        if (snapshot.hasData) {
+  @override
+  Widget build(BuildContext context) {
     final spriteSheet = SpriteSheet.fromColumnsAndRows(
-            image: snapshot.data!,
+      image: Flame.images.fromCache(imagePath),
       columns: 8,
       rows: 9,
     );
@@ -82,9 +83,4 @@ class BonusAnimation extends StatelessWidget {
       ),
     );
   }
-
-        return const SizedBox();
-      },
-    );
-  }
 }

lib/game/view/widgets/widgets.dart

@@ -1,2 +1,3 @@
+export 'bonus_animation.dart';
 export 'game_hud.dart';
 export 'play_button_overlay.dart';

test/game/view/widgets/bonus_animation_test.dart

@@ -1,10 +1,8 @@
 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';
@@ -17,17 +15,12 @@ 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;
+  setUp(() async {
+    await BonusAnimation.loadAssets();
   });
 
-  group('renders SpriteAnimationWidget for', () {
+  group('loads correctly SpriteAnimationWidget for', () {
     testWidgets('dashNest', (tester) async {
       await tester.runAsync(() async {
         await tester.pumpWidget(