ios - 场景更改后音乐停止播放 SKAudioNode Xcode 8

Question

所以我一直试图让这个音频文件在游戏的所有场景中播放，但它在 MenuScene 之后中断了。我从 GameViewController

调用 MenuScene

class GameViewController: UIViewController {

override func viewDidLoad() {
    super.viewDidLoad()

    if let view = self.view as! SKView? {
        // Load the SKScene from 'MenuScene.sks'
        if let scene = SKScene(fileNamed: "MenuScene") {
            // Set the scale mode to scale to fit the window

然后在 MenuScene 中，我通过这样做开始播放音乐。

class MenuScene: SKScene {

var starfield:SKEmitterNode!

var newGameButtonNode:SKSpriteNode!
var difficultyButtonNode:SKSpriteNode!
var difficultyLabelNode:SKLabelNode!
var backgroundMusic:SKAudioNode!

override func didMove(to view: SKView) {


    let backgroundMusic = SKAudioNode(fileNamed: "Snap.mp3")
    backgroundMusic.autoplayLooped = true
    addChild(backgroundMusic)

音乐开始播放。然后我在 touchesBegan () 中，如果触摸 GameScene 按钮，它将加载该场景。我将过渡做得非常长，以找出音乐何时停止并在整个过渡过程中播放，但是当加载 GameScene 时，它​​就会停止。

if nodesArray.first?.name == "newGameButton" {

            let transition = SKTransition.fade(withDuration: 5.0)

            run(SKAction.wait(forDuration: 5.0), completion: {
                self.backgroundMusic = SKAudioNode(fileNamed: "Snap.mp3")
                self.backgroundMusic.autoplayLooped = true
                self.addChild(self.backgroundMusic)
            })
            let gameScene = GameScene(size: self.size)

            self.view!.presentScene(gameScene, transition: transition)

我希望它在整个游戏过程中和 GameOver 场景中继续播放并永远循环播放。

Answer 1

确保您在主 SKScene 中并且

你可以这样做:

self.runAction(SKAction.playSoundFileNamed("YourFileName.extension", waitForCompletion: false))

重复音乐:

SKAction.repeatForever(SKAction.playSoundFileNamed("YourFileName.extension", waitForCompletion: true))

您的音乐将继续播放..

With AVFoundation

我已经完成的代码之一。

import AVFoundation


var backgroundMusicPlayer: AVAudioPlayer!

func playBackgroundMusic(filename: String) {
let url = NSBundle.mainBundle().URLForResource(
filename, withExtension: nil)
if (url == nil) {
print("Could not find file: \(filename)")
return
}

var error: NSError? = nil
backgroundMusicPlayer = 
AVAudioPlayer(contentsOfURL: url, error: &error)
if backgroundMusicPlayer == nil {
print("Could not create audio player: \(error!)")
return
}

backgroundMusicPlayer.numberOfLoops = -1
backgroundMusicPlayer.prepareToPlay()
backgroundMusicPlayer.play()
 }

  import SpriteKit