feat: improving pinball audio code and loading

lib/game/view/pinball_game_page.dart

@@ -53,7 +53,7 @@ class PinballGamePage extends StatelessWidget {
 
     final loadables = [
       ...game.preLoadAssets(),
-      pinballAudio.load(),
+      ...pinballAudio.load(),
       ...BonusAnimation.loadAssets(),
       ...SelectedCharacter.loadAssets(),
     ];

packages/pinball_audio/lib/src/pinball_audio.dart

@@ -71,26 +71,36 @@ class PinballAudio {
   late AudioPool _bumperBPool;
 
   /// Loads the sounds effects into the memory
-  Future<void> load() async {
+  List<Future<void>> load() {
     _configureAudioCache(FlameAudio.audioCache);
 
-    _bumperAPool = await _createAudioPool(
-      _prefixFile(Assets.sfx.bumperA),
-      maxPlayers: 4,
-      prefix: '',
-    );
+    return [
+      _poolFactory(Assets.sfx.bumperA).then((pool) => _bumperAPool = pool),
+      _poolFactory(Assets.sfx.bumperB).then((pool) => _bumperBPool = pool),
+      _preCacheSingleAudio(_prefixFile(Assets.sfx.google)),
+      _preCacheSingleAudio(_prefixFile(Assets.sfx.ioPinballVoiceOver)),
+      _preCacheSingleAudio(_prefixFile(Assets.music.background)),
+    ];
+  }
 
-    _bumperBPool = await _createAudioPool(
-      _prefixFile(Assets.sfx.bumperB),
-      maxPlayers: 4,
+  String _prefixFile(String file) {
+    return 'packages/pinball_audio/$file';
+  }
+
+  Future<AudioPool> _poolFactory(String file, {int maxPlayers = 4}) {
+    return _createAudioPool(
+      _prefixFile(file),
+      maxPlayers: maxPlayers,
       prefix: '',
     );
+  }
 
-    await Future.wait([
-      _preCacheSingleAudio(_prefixFile(Assets.sfx.google)),
-      _preCacheSingleAudio(_prefixFile(Assets.sfx.ioPinballVoiceOver)),
-      _preCacheSingleAudio(_prefixFile(Assets.music.background)),
-    ]);
+  void _play(String file) {
+    _playSingleAudio(_prefixFile(file));
+  }
+
+  void _loop(String file) {
+    _loopSingleAudio(_prefixFile(file));
   }
 
   /// Plays a random bumper sfx.
@@ -99,21 +109,11 @@ class PinballAudio {
   }
 
   /// Plays the google word bonus
-  void googleBonus() {
-    _playSingleAudio(_prefixFile(Assets.sfx.google));
-  }
+  void googleBonus() => _play(Assets.sfx.google);
 
   /// Plays the I/O Pinball voice over audio.
-  void ioPinballVoiceOver() {
-    _playSingleAudio(_prefixFile(Assets.sfx.ioPinballVoiceOver));
-  }
+  void ioPinballVoiceOver() => _play(Assets.sfx.ioPinballVoiceOver);
 
   /// Plays the background music
-  void backgroundMusic() {
-    _loopSingleAudio(_prefixFile(Assets.music.background));
-  }
-
-  String _prefixFile(String file) {
-    return 'packages/pinball_audio/$file';
-  }
+  void backgroundMusic() => _loop(Assets.music.background);
 }

packages/pinball_audio/test/src/pinball_audio_test.dart

@@ -97,7 +97,7 @@ void main() {
 
     group('load', () {
       test('creates the bumpers pools', () async {
-        await audio.load();
+        await Future.wait(audio.load());
 
         verify(
           () => createAudioPool.onCall(
@@ -117,7 +117,7 @@ void main() {
       });
 
       test('configures the audio cache instance', () async {
-        await audio.load();
+        await Future.wait(audio.load());
 
         verify(() => configureAudioCache.onCall(FlameAudio.audioCache))
             .called(1);
@@ -129,13 +129,13 @@ void main() {
           playSingleAudio: playSingleAudio.onCall,
           preCacheSingleAudio: preCacheSingleAudio.onCall,
         );
-        await audio.load();
+        await Future.wait(audio.load());
 
         expect(FlameAudio.audioCache.prefix, equals(''));
       });
 
       test('pre cache the assets', () async {
-        await audio.load();
+        await Future.wait(audio.load());
 
         verify(
           () => preCacheSingleAudio
@@ -184,7 +184,7 @@ void main() {
       group('when seed is true', () {
         test('plays the bumper A sound pool', () async {
           when(seed.nextBool).thenReturn(true);
-          await audio.load();
+          await Future.wait(audio.load());
           audio.bumper();
 
           verify(() => bumperAPool.start(volume: 0.6)).called(1);
@@ -194,7 +194,7 @@ void main() {
       group('when seed is false', () {
         test('plays the bumper B sound pool', () async {
           when(seed.nextBool).thenReturn(false);
-          await audio.load();
+          await Future.wait(audio.load());
           audio.bumper();
 
           verify(() => bumperBPool.start(volume: 0.6)).called(1);
@@ -204,7 +204,7 @@ void main() {
 
     group('googleBonus', () {
       test('plays the correct file', () async {
-        await audio.load();
+        await Future.wait(audio.load());
         audio.googleBonus();
 
         verify(
@@ -216,7 +216,7 @@ void main() {
 
     group('ioPinballVoiceOver', () {
       test('plays the correct file', () async {
-        await audio.load();
+        await Future.wait(audio.load());
         audio.ioPinballVoiceOver();
 
         verify(
@@ -229,7 +229,7 @@ void main() {
 
     group('backgroundMusic', () {
       test('plays the correct file', () async {
-        await audio.load();
+        await Future.wait(audio.load());
         audio.backgroundMusic();
 
         verify(