Move flame_audio & update to work with current rc11 (#807)

packages/flame_audio/example/lib/main.dart

@@ -0,0 +1,81 @@
+import 'package:flame/components.dart';
+import 'package:flame/extensions.dart';
+import 'package:flame/game.dart';
+import 'package:flame/gestures.dart';
+import 'package:flame/palette.dart';
+import 'package:flame_audio/audio_pool.dart';
+import 'package:flame_audio/flame_audio.dart';
+import 'package:flutter/widgets.dart' hide Animation;
+
+void main() async {
+  runApp(GameWidget(game: AudioGame()));
+}
+
+/// This example game showcases three possible use cases:
+///
+/// 1. Use the static FlameAudio class to easily fire a sfx using the default
+/// configs for the button tap.
+/// 2. Uses a custom AudioPool for extremely efficient audio loading and pooling
+/// for tapping elsewhere.
+/// 3. Uses the Bgm utility for background music.
+class AudioGame extends BaseGame with TapDetector {
+  static Paint black = BasicPalette.black.paint();
+  static Paint gray = const PaletteEntry(Color(0xFFCCCCCC)).paint();
+  static TextPaint text = TextPaint(
+    config: TextPaintConfig(color: BasicPalette.white.color),
+  );
+
+  late AudioPool pool;
+
+  @override
+  Future<void> onLoad() async {
+    pool = await AudioPool.create('fire_2.mp3', minPlayers: 3, maxPlayers: 4);
+    startBgmMusic();
+  }
+
+  Rect get button => Rect.fromLTWH(20, size.y - 300, size.x - 40, 200);
+
+  void startBgmMusic() {
+    FlameAudio.bgm.initialize();
+    FlameAudio.bgm.play('music/bg_music.ogg');
+  }
+
+  void fireOne() {
+    FlameAudio.audioCache.play('sfx/fire_1.mp3');
+  }
+
+  void fireTwo() {
+    pool.start();
+  }
+
+  @override
+  void render(Canvas canvas) {
+    super.render(canvas);
+    canvas.drawRect(size.toRect(), black);
+
+    text.render(
+      canvas,
+      '(click anywhere for 1)',
+      Vector2(size.x / 2, 200),
+      anchor: Anchor.topCenter,
+    );
+
+    canvas.drawRect(button, gray);
+
+    text.render(
+      canvas,
+      'click here for 2',
+      Vector2(size.x / 2, size.y - 200),
+      anchor: Anchor.bottomCenter,
+    );
+  }
+
+  @override
+  void onTapDown(TapDownInfo details) {
+    if (button.containsPoint(details.eventPosition.game)) {
+      fireTwo();
+    } else {
+      fireOne();
+    }
+  }
+}