swift - 如何在 Sprite Kit 中切换场景？

Question

我的代码有什么问题？每次我按下按钮时，我都会得到一个默认的灰色屏幕。过渡按钮:

override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
    for touch: AnyObject in touches {
    let location = touch.locationInNode(self)
        if self.nodeAtPoint(location) == self.pause {
            var pauseScene = PauseScene(size: self.size)
            scene?.paused = true
            let skView = self.view as SKView!
            skView.ignoresSiblingOrder = true
            pauseScene.scaleMode = .AspectFill
            pauseScene.size = skView.bounds.size
            skView.presentScene(pauseScene)
        }
    }
}

我在那个场景中不想加载的内容:

class PauseScene: SKScene {
    let pauseBackground = SKSpriteNode (imageNamed: "pauseBackground")

    override func didMoveToView(view: SKView) {
        self.pauseBackground.anchorPoint = CGPointMake(CGRectGetMidX(self.frame), CGRectGetMidY(self.frame))
        self.pauseBackground.position = CGPointMake(CGRectGetMidX(self.frame), CGRectGetMidY(self.frame))
        self.addChild(pauseBackground)
    }

}

我错过了什么吗？

Answer 1

看起来您的问题出在您的 PauseScene 中的 didMoveToView: 中。您不想更改 self.pauseBackground 的 anchor 通常 anchor 基于 0 到 1。(.5,.5) 是 Sprite 的中心。您将其设置为比该值高得多的值，并且如果您将位置设置为场景宽度和高度的一半，我根本不明白您为什么要更改 anchor 。看起来只需删除代码行即可解决问题。

class PauseScene: SKScene {
let pauseBackground = SKSpriteNode (imageNamed: "pauseBackground")

    override func didMoveToView(view: SKView) {
        self.pauseBackground.position = CGPointMake(CGRectGetMidX(self.frame), CGRectGetMidY(self.frame))
        self.addChild(pauseBackground)
    }
}

我还看到您在初始化场景后正在更改场景的大小。我会用你想要的大小初始化它。

override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
    for touch: AnyObject in touches {
    let location = touch.locationInNode(self)
        if self.nodeAtPoint(location) == self.pause {
            let skView = self.view as SKView!
            skView.ignoresSiblingOrder = true
            var pauseScene = PauseScene(size: skView.bounds.size)
            scene?.paused = true
            pauseScene.scaleMode = .AspectFill
            skView.presentScene(pauseScene)
        }
    }
}

希望这对您有所帮助并且有意义。