您可以覆盖4种SKScene检测用户触摸的方法
class GameScene: SKScene {
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
}
override func touchesMoved(touches: Set<UITouch>, withEvent event: UIEvent?) {
}
override func touchesEnded(touches: Set<UITouch>, withEvent event: UIEvent?) {
}
override func touchesCancelled(touches: Set<UITouch>?, withEvent event: UIEvent?) {
}
}请注意，每种方法都接收一个touches参数（在特定情况下），该参数可以包含一个以上的单个触摸事件。