为什么我的声音使我的游戏落后于Swift Spritekit? [英] Why is my sound making my game lag in Swift Spritekit?

问题描述

当我的英雄节点收集一个硬币并且我的游戏中有一个小小的打I时，我就有这种声音效果.当收集硬币时涉及声音时，它不像其他游戏中那样平滑.我究竟做错了什么?这是我的声音代码:

I have this sound effect when my hero node collects a coin and there is this small hiccup in my game. Its not smooth like in other games when there is sound involved when collecting a coin. What am I doing wrong? Heres my code for the sound:

  class GameScene: SKScene, SKPhysicsContactDelegate {

   var coinSound =  NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("coin", ofType: "wav")!)
   var coinAudioPlayer = AVAudioPlayer()

   override func didMoveToView(view: SKView) {

   coinAudioPlayer = AVAudioPlayer(contentsOfURL: coinSound, error: nil)
   coinAudioPlayer.pause()
   }

   if firstBody.categoryBitMask == HeroCategory && secondBody.categoryBitMask == CoinCategory {

   coinAudioPlayer.prepareToPlay()
   coinAudioPlayer.play()
   coinAudioPlayer.currentTime = NSTimeInterval(1.0)
    }

推荐答案

使用

Use SKAction.playSoundFileNamed. When you create an SKAction instance ahead of time, it does all the necessary prep to perform the action (in this case, playing a sound) without lag during gameplay. To run the action (play the sound), call runAction on a node — this can be any node, even the scene itself.

由于您将哪个节点用于声音目的并不重要，因此请使用最方便的那个节点.例如，如果您只是播放声音，则可以在场景中调用runAction.但是，如果您的声音属于某个动作组或序列(例如，将一个精灵动画化)的一部分，则可以使声音动作成为该序列的一部分，并在要制作动画的精灵上播放.

Since it doesn't matter which node you use for sound purposes, use whichever is most convenient. For example, if you're just playing a sound you might call runAction on the scene. But if your sound is part of an action group or sequence that, say, animates a sprite, you could make the sound action part of that sequence and play it on the sprite that you're animating.

请参见

See SpriteKit Programming Guide for more about actions.

^{不相关的Swift提示:对于不变的引用，请使用let而不是var.它可以帮助您避免以后引入错误，还可以帮助编译器优化代码.}

^{Unrelated Swift tip: use let instead of var for references that won't change. It can help keep you from introducing bugs later, and it probably helps the compiler optimize your code, too.}

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