Question

我正在创建一个用户使用喷气背包控制角色的游戏。当喷气背包与钻石相交时，我将钻石添加到它们的总数中，然后发出声音。然而，声音使游戏暂停十分之一秒左右，并扰乱了流程。这是我正在使用的代码：

var diamondSound = NSBundle.mainBundle().URLForResource("diamondCollect", withExtension: "wav")!
var diamondPlayer = AVAudioPlayer?()

    class GameScene: SKScene{

      override func didMoveToView(view: SKView) {

            do {
                 diamondPlayer = try AVAudioPlayer(contentsOfURL: diamondSound)
                 guard let player = diamondPlayer else { return }

                 player.prepareToPlay()
            } catch let error as NSError {
                 print(error.description)
            }
       }

然后是：

    override func update(currentTime: CFTimeInterval) {

        if character.intersectsNode(diamond){
            diamondPlayer?.play()
            addDiamond()
            diamond.removeFromParent()
        }

    }

如果重要的话，我也在使用Sprite Kit。非常感谢任何帮助！

Answer 1

通常情况下，我首先在我的游戏中使用SKAction.playSoundWithFile，但这个有限制，没有音量设置。所以，通过这个扩展你可以解决这个问题：

public extension SKAction {
  public class func playSoundFileNamed(fileName: String, atVolume: Float, waitForCompletion: Bool) -> SKAction {

    let nameOnly = (fileName as NSString).stringByDeletingPathExtension
    let fileExt  = (fileName as NSString).pathExtension

    let soundPath = NSBundle.mainBundle().URLForResource(nameOnly, withExtension: fileExt)


    var player: AVAudioPlayer! = AVAudioPlayer()
    do { player = try AVAudioPlayer(contentsOfURL: soundPath!, fileTypeHint: nil) }
    catch let error as NSError { print(error.description) }

    player.volume = atVolume

    let playAction: SKAction = SKAction.runBlock { () -> Void in
        player.prepareToPlay()
        player.play()
    }

    if(waitForCompletion){
        let waitAction = SKAction.waitForDuration(player.duration)
        let groupAction: SKAction = SKAction.group([playAction, waitAction])
        return groupAction
    }

    return playAction
  }
}

<强>用法：

self.runAction(SKAction.playSoundFileNamed("diamondCollect.wav", atVolume:0.5, waitForCompletion: true))

AVAudioPlayer播放时游戏滞后

1 个答案: