flutter - 如何同时实现拖动和点击

Question

我正在用 Flame 制作一个颤动游戏，但我在实现控制器时遇到了问题。控制器基本上是一个操纵杆和一个按钮攻击。对于操纵杆，我需要 panStart、panUpdate 和 panEnd 手势，对于攻击按钮 onTapUp 和 onTapDown。但我不能同时做两个，一次只能做一个手势

MultiTapGestureRecognizer tapper = MultiTapGestureRecognizer();
PanGestureRecognizer panGesture = PanGestureRecognizer();

panGesture.onEnd = game.onPanEnd;
panGesture.onUpdate = game.onPanUpdate;
panGesture.onStart = game.onPanStart;
panGesture.onCancel = game.onPanCancel;
tapper.onTapDown = game.onTapDown;
tapper.onTapUp = game.onTapUp;
tapper.onTapCancel = game.onTapCancel;
flameUtil.addGestureRecognizer(tapper);
flameUtil.addGestureRecognizer(panGesture);

Answer 1

不要使用 GestureRecognizers，而是直接在你的游戏类上使用PanDetector和TapDetectormixins 并覆盖你需要的方法。

class MyGame extends BaseGame with TapDetector, PanDetector {

  MyGame();

  @override
  void onTap() {}

  @override
  void onTapCancel() {}

  @override
  void onTapDown(TapDownDetails details) {}

  @override
  void onTapUp(TapUpDetails details) {}

  @override
  void onPanDown(DragDownDetails details) {}

  @override
  void onPanStart(DragStartDetails details) {}

  @override
  void onPanUpdate(DragUpdateDetails details) {}

  @override
  void onPanEnd(DragEndDetails details) {}

  @override
  void onPanCancel() {}
}