Question

我在我的viewcontroller中使用此代码通过滑动手势在GameScene中移动播放器：

override func viewDidLoad() {
    super.viewDidLoad()

  var scene:GameMenuScene!
   var scene1: GameScene!
   var scene2: LevelScene!

    let skView = view as SKView
    skView.multipleTouchEnabled = false
    scene = GameMenuScene(size: skView.bounds.size)
    skView.showsFPS = true
    skView.showsNodeCount = true
    skView.presentScene(scene)


    let swipeRight:UISwipeGestureRecognizer = UISwipeGestureRecognizer(target: self, action: Selector("swipedRight:"))
    swipeRight.direction = .Right
    view.addGestureRecognizer(swipeRight)

    let swipeLeft:UISwipeGestureRecognizer = UISwipeGestureRecognizer(target: self, action: Selector("swipedLeft:"))
    swipeLeft.direction = .Left
    view.addGestureRecognizer(swipeLeft)

    let swipeUp:UISwipeGestureRecognizer = UISwipeGestureRecognizer(target: self, action: Selector("swipedUp:"))
    swipeUp.direction = .Up
    view.addGestureRecognizer(swipeUp)

    let swipeDown:UISwipeGestureRecognizer = UISwipeGestureRecognizer(target: self, action: Selector("swipedDown:"))
    swipeDown.direction = .Down
    view.addGestureRecognizer(swipeDown)

    }

func swipedRight(sender: UISwipeGestureRecognizer){
    let skView = view as SKView
    let gameScene = skView.scene as GameScene
    gameScene.swipedRight1(sender)
}
func swipedLeft(sender: UISwipeGestureRecognizer){
    let skView = view as SKView
    let gameScene = skView.scene as GameScene
    gameScene.swipedLeft1(sender)
}
func swipedDown(sender: UISwipeGestureRecognizer){
    let skView = view as SKView
    let gameScene = skView.scene as GameScene
    gameScene.swipedDown1(sender)
}
func swipedUp(sender: UISwipeGestureRecognizer){
    let skView = view as SKView
    let gameScene = skView.scene as GameScene
    gameScene.swipedUp1(sender)
}

问题：当我在另一个屏幕而不是gameScene并且我滑动时，游戏崩溃是因为＆＃34;无法识别的选择器已发送＆＃34;，所以我想在GameScene而不是LevelScene中使用滑动功能或GameMenuScene。对于GameMenuScene和LevelScene，我想添加其他滑动功能。

如何检测我所在的场景，以便制作if语句？

谢谢

Answer 1

在你的GameScene中

添加这个......

override func willMoveFromView(view: SKView) {
    if view.gestureRecognizers != nil {
        for gesture in view.gestureRecognizers! {
            if let recognizer = gesture as? UISwipeGestureRecognizer {
                view.removeGestureRecognizer(recognizer)
            }
        }
    }
}

仅在1个场景中滑动手势，如何在其他场景中忽略

1 个答案: