Your First Flutter Flame Game

Mar 6 2024 · Dart 3, Flutter 3.10.1, Android Studio 2021.3.1 or higher, Visual Studo Code 1.7.4 or higher

Part 1: Getting Started With Flame

03. Learn Flame's Core Concepts

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Previous episode: 02. Create Meteormania Game Next episode: 04. Add Components to Meteormania

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Notes: 03. Learn Flame's Core Concepts

Flame has great documentation, it might help if you take a look at it.

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Before adding custom elements to your game, it’s important that you understand how Flame works.

MeteormaniaGame

Back in meteormania_game.dart, override onLoad in MeteormaniaGame.

@override
FutureOr<void> onLoad() async {
}
await Flame.images.load('bg1.png');
final background = SpriteComponent(
  sprite: Sprite(
    Flame.images.fromCache('bg1.png'),
  ),
  size: Vector2(
    size.x,
    size.y,
  ),
);
add(background);

World & CameraComponent

In meteormania_game.dart, let’s change how you add background to MeteormaniaGame.

late World _world;
late CameraComponent _cameraComponent;
_world = World()..add(background);

add(_world);
final background = SpriteComponent(
  sprite: Sprite(
    Flame.images.fromCache('bg1.png'),
  ),
  size: Vector2(
    GameConstants.cameraWidth,
    GameConstants.cameraHeight,
  ),
);
final _cameraComponent = CameraComponent(world: _world)
  ..viewfinder.visibleGameSize =
      Vector2(GameConstants.cameraWidth, GameConstants.cameraHeight)
  ..viewfinder.position =
      Vector2(GameConstants.cameraWidth / 2, GameConstants.cameraHeight / 2)
  ..viewfinder.anchor = Anchor.center;

add(_cameraComponent);