调用函数 touchesBegan 时 SpriteKit 游戏延迟

Posted 2023-03-10

【中文标题】调用函数 touchesBegan 时 SpriteKit 游戏延迟

【英文标题】：SpriteKit game lag when the function touchesBegan is called

【发布时间】：2015-07-17 17:58:03

【问题描述】：

我正在创建我的第一个游戏，类似于 Flappy Bird。我希望它像真正的游戏一样在触摸屏幕时启动。但它滞后了大约一秒半，结果是你甚至不玩就死了。这是我的代码：

override func didMoveToView(view: SKView) 

    /* Setup your scene here */
   //Here i init some stuff

    distanceToMove = CGFloat(self.frame.size.width + 140)
    movePipes = SKAction.repeatActionForever(SKAction.moveByX(-distanceToMove, y: 0, duration: NSTimeInterval(1.2)))
    removePipes = SKAction.removeFromParent()
    moveAndRemove = SKAction.sequence([movePipes,removePipes])


    let delay = SKAction.waitForDuration(NSTimeInterval(0.6))
    let spawn = SKAction.runBlock(() in self.initPipes())
    let spawnAndDelay = SKAction.sequence([spawn,delay])
    spawnAndDelayForever = SKAction.repeatActionForever(spawnAndDelay)

TouchesBegan：

override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) 
   /* Called when a touch begins */
    let touch = touches.first! as UITouch!
    let touchLocation = touch.locationInNode(self)

    if state == GameState.Starting 

        state = GameState.Playing

        instNode.hidden = true

        if state == GameState.Playing 
            runAction(spawnAndDelayForever)
            addChild(pipes)
            initScore()
        
    

管道初始化：

func initPipes() 
    let upper = UInt32(self.size.height - 250)
    let pY = arc4random_uniform(upper) + 200
    let pipePair = SKNode()
    pipePair.position = CGPoint(x: self.frame.size.width + 70, y: 0)
    //PIPE 1
    let pipe1 = SKSpriteNode(color: SKColor.whiteColor(), size: CGSizeMake(70, 700))

    pipe1.anchorPoint = CGPointMake(0, 0)
    pipe1.position = CGPoint(x: 0, y: Int(pY))
    pipe1.physicsBody = SKPhysicsBody(rectangleOfSize: CGSizeMake(70, 700), center: CGPointMake(70/2, 700/2))
    pipe1.physicsBody?.dynamic = false
    pipe1.physicsBody?.affectedByGravity = false
    pipe1.physicsBody?.categoryBitMask = PipeCategory
    pipe1.physicsBody?.contactTestBitMask = PlayerCategory
    pipe1.physicsBody?.collisionBitMask = PlayerCategory
    pipePair.addChild(pipe1)

    //PIPE 2
    let pipe2 = SKSpriteNode(color: SKColor.whiteColor(), size: CGSizeMake(70, 700))

    pipe2.anchorPoint = CGPointMake(0,1)
    pipe2.position = CGPoint(x: 0, y: pipe1.position.y - 150)
    pipe2.physicsBody = SKPhysicsBody(rectangleOfSize: CGSizeMake(70, 700), center: CGPointMake(35, -700/2))
    pipe2.physicsBody?.dynamic = false
    pipe2.physicsBody?.affectedByGravity = false
    pipe2.physicsBody?.categoryBitMask = PipeCategory
    pipe2.physicsBody?.contactTestBitMask = PlayerCategory
    pipe2.physicsBody?.collisionBitMask = PlayerCategory
    pipePair.addChild(pipe2)


    //SCORE
    let scoreSprite = SKSpriteNode(color: SKColor.clearColor(), size: CGSize(width: 50, height: 150))
    scoreSprite.anchorPoint = CGPointMake(0, 1)
    scoreSprite.position = CGPointMake(pipe1.position.x + 10, pipe1.position.y)
    scoreSprite.physicsBody = SKPhysicsBody(rectangleOfSize: CGSize(width: 50, height: 150), center: CGPointMake(25, -75))
    scoreSprite.physicsBody?.categoryBitMask = GapCategory
    scoreSprite.physicsBody?.contactTestBitMask = PlayerCategory
    scoreSprite.physicsBody?.collisionBitMask = 0
    scoreSprite.physicsBody?.dynamic = false
    pipePair.addChild(scoreSprite)


    pipePair.runAction(moveAndRemove)
    pipes.addChild(pipePair)

这很简单：在 initPipes() 中，我创建管道并运行移动和移除操作。在 touchesBegan 中，我调用了生成它们的动作。但是当我触摸屏幕时它很迟钝。

【问题讨论】：

有什么更新吗？我对完全空的 touchesBegan 方法也有类似的问题……

你找到这个人的解决方案了吗？这也扼杀了我的游戏体验。有时我的游戏在点击屏幕时会出现延迟，让玩家输掉游戏。与硬币和其他东西的碰撞也滞后......所以wtf在这里发生：S你也知道为什么声音有点滞后吗？好像不能同时播放 2 个声音。

【参考方案1】：

通过Time ProfilerInstrument 运行您的应用程序，找出延迟的来源。它会为您提供详细的结果（直至单独的代码行），让您知道问题出在哪里。

这将比这里的人们猜测的要准确得多。