在SKScene中使用UIViewController

Question

在我的GameScene.swift文件中,我正在尝试将segue执行回我的菜单视图控制器,如下所示:

func returnToMainMenu(){
    var vc: UIViewController = UIViewController()
    vc = self.view!.window!.rootViewController!
    vc.performSegueWithIdentifier("menu", sender: vc)
}

点击节点时会运行此方法:

override func touchesEnded(touches: NSSet, withEvent event: UIEvent) {
    for touch: AnyObject in touches {
        let location = touch.locationInNode(self)
        if gameOn == false{
            if restartBack.containsPoint(location){
                self.restartGame()
            }
            else if menuBack.containsPoint(location){
                self.returnToMainMenu()
            }
            else if justBegin == true{
                self.restartGame()
            }
        }
    }
}

哪里menuBack是按钮返回菜单.每次运行此代码时,都会抛出NSException:

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Receiver (<ProxyBlock.Menu: 0x165a3e90>) has no segue with identifier 'menu''

我检查了我的segue的标识符,它确实是"菜单".

Answer 1

您正在根viewController上调用segue.我认为这就是问题所在.你需要在场景的viewController上调用segue(我假设你创建了segue,因此它没有在根viewController上找到).

现在问题是SKScene没有直接访问它的viewController,而只是它包含它的视图.您需要手动创建指向它的指针.这可以通过为SKScene创建属性来完成:

class GameScene: SKScene {
    var viewController: UIViewController?
    ...
}

然后,在viewController类中,就在之前 skView.presentScene(scene)

scene.viewController = self

现在,您可以直接访问viewController.只需在此viewController上调用segue:

func returnToMainMenu(){
    self.viewController.performSegueWithIdentifier("menu", sender: vc)
}