接触时不播放声音

Question

我有一个简单的游戏，其中一个球跳过障碍物。当它与障碍物接触时（无论是在跳跃时还是在跳跃前碰撞时），我想在过渡到主菜单屏幕（GameScene.Swift）之前播放声音。肯定会检测到 didBeginContact 但不一定会检测到 didEndContact 由于某种原因，声音文件无法播放。我做错了什么？

PlayScene.Swift 文件

class PlayScene: SKScene, SKPhysicsContactDelegate{
    //......
    let losingSoundAction = SKAction.playSoundFileNamed("losing.wav", waitForCompletion: true)
    //....

   func didBeginContact(contact: SKPhysicsContact) {
      //play the losing sound
      self.runAction(losingSoundAction)

      contact.bodyA.categoryBitMask = ColliderType.Hero.rawValue
      died()
   }

   func died(){
      //change back to main screen
      if let scene = GameScene.unarchiveFromFile("GameScene") as? GameScene {
         let skView = self.view as SKView!
         scene.scaleMode = .AspectFill
         scene.GameSceneInstance = self
         scene.score = score
         skView.presentScene(scene)
      }
   }
}

Answer 1

我将 dead() 函数调用移至 didEndContact() ，这似乎解决了问题。