main() {
        Game game = MyGame();
        runApp(game.widget);
    }
    
    class MyCrate extends SpriteComponent {

        // creates a component that renders the crate.png sprite, with size 16 x 16
        MyCrate() : super.fromSprite(16.0, 16.0, new Sprite('crate.png'));

        @override
        void resize(Size size) {
            this.x = (size.width - this.width)/ 2;
            this.y = (size.height - this.height) / 2;
        }
    }

    class MyGame extends BaseGame {
        MyGame() {
            add(new MyCrate()); // this will call resize the first time as well
        }
    }

class MyGame extends Game with TapDetector {
  // Other methods ommited

  @override
  void onTapDown(TapDownDetails details) {
    print("Player tap down on ${details.globalPosition.dx} 
    - ${details.globalPosition.dy}");
  }

  @override
  void onTapUp(TapUpDetails details) {
    print("Player tap up on ${details.globalPosition.dx} 
    - ${details.globalPosition.dy}");
  }
}

import 'package:flame/components/component.dart';
import 'package:flame/components/mixins/tapable.dart';

class TapableComponent extends PositionComponent with Tapable {

  // update and render omitted

  @override
  void onTapUp(TapUpDetails details) {
    print("tap up");
  }

  @override
  void onTapDown(TapDownDetails details) {
    print("tap down");
  }

  @override
  void onTapCancel() {
    print("tap cancel");
  }
}

@override
  Widget build(BuildContext context) {
  
    return BonfireWidget(
      joystick: MyJoystick(),
      map: DungeonMap.map(), 
      player: Knight(), 
      interface: KnightInterface(),
      decorations: DungeonMap.decorations(),
      enemies: DungeonMap.enemies(),
      background: BackgroundColorGame(Colors.blueGrey[900]),
      constructionMode: false,
      showCollisionArea: false, 
      gameController: GameController() 
    );
    
  }