The Issue

here's a simple flame game:

class MyGame extends BaseGame {
  Future<void> onLoad() async {
    super.onLoad();
    FlameAudio.bgm.initialize();
    FlameAudio.bgm.play('music/background.mp3', volume: 0.75);
  }
}

void main() {
  final BaseGame myGame = MyGame();
  runApp(
    GameWidget(
      game: myGame,
    ),
  );
}

when I start the app with flutter run and then type R in the terminal to hot restart, I get this error:

E/flutter (17559): [ERROR:flutter/lib/ui/ui_dart_state.cc(186)] Unhandled Exception: LateInitializationError: Field '_channel@669020947' has been assigned during initialization.
E/flutter (17559): #0      AudioPlayer._channel (package:audioplayers/audioplayers.dart)
E/flutter (17559): #1      AudioPlayer._invokeMethod (package:audioplayers/audioplayers.dart:283:12)
E/flutter (17559): #2      AudioPlayer.setReleaseMode (package:audioplayers/audioplayers.dart:469:12)
E/flutter (17559): #3      AudioCache.loop (package:audioplayers/audio_cache.dart:178:12)
E/flutter (17559): <asynchronous suspension>
E/flutter (17559): #4      Bgm.play (package:flame_audio/bgm.dart:57:19)
E/flutter (17559): <asynchronous suspension>
E/flutter (17559):

and the music stops

Environment

flutter doctor -v:

[✓] Flutter (Channel stable, 2.0.5, on macOS 11.3 20E5196f darwin-x64, locale en-US)
    • Flutter version 2.0.5 at /Users/suman/flutter
    • Framework revision adc687823a (13 days ago), 2021-04-16 09:40:20 -0700
    • Engine revision b09f014e96
    • Dart version 2.12.3

[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
    • Android SDK at /Users/suman/Library/Android/sdk/
    • Platform android-30, build-tools 30.0.3
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6915495)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 12.4, Build version 12D4e
    • CocoaPods version 1.10.1

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 4.1)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6915495)

[✓] VS Code (version 1.55.2)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.21.0

[✓] Connected device (3 available)
    • Z3351S (mobile) • 320295556323 • android-arm    • Android 9 (API 28)
    • macOS (desktop) • macos        • darwin-x64     • macOS 11.3 20E5196f darwin-x64
    • Chrome (web)    • chrome       • web-javascript • Google Chrome 90.0.4430.93
    ! Error: Sumanth Ratna is not connected. Xcode will continue when Sumanth Ratna is connected. (code -13)

• No issues found!

flame-engine / flame_audio

Error on hot restart #12

The Issue

Environment