如何使颤振火焰部件相互跟踪？

Question

我们有一个SpriteComponent ( _fortress )，它是一个中心对象，另一个SpriteComponent (_player)在_fortress周围移动。我们希望_fortress通过旋转来跟踪_player，类似于典型的射击游戏(例如，参见空间堡垒游戏)。

    _fortress.add(
        RotateEffect.by(
          _fortress.position.angleTo(_player.position),
          LinearEffectController(1),
          onComplete: () => {},
        ),
      );

Answer 1

如果希望始终毫不延迟地跟踪_player，可以在更新方法中使用lookAt方法：

class Fortress extends SpriteComponent with HasGameRef<YourGameClass> {
  @override
  double nativeAngle = pi; // You only need to set this if your sprite isn't "looking straight up" in the image, if it is looking to the right it should be `pi` etc.
  
  @override
  void update(double dt) p
    super.update(dt);
    lookAt(gameRef.player.position);
  }
}