SCNAudioSource 不会与 SCNNode 一起播放答案

【问题标题】：SCNAudioSource won't play with a SCNNodeSCNAudioSource 不会与 SCNNode 一起播放
【发布时间】：2018-09-24 11:06:43
【问题描述】：

每次点击屏幕时，我都会尝试播放声音。这是我的代码

全球：

var shapeNode: SCNNode!
var SoundAction: SCNAction!

ViewDidLoad：

    let audioSource = SCNAudioSource(named: "launch.mp3")!
    audioSource.isPositional = true
    audioSource.volume = 1.0
    SoundAction = SCNAction.playAudio(audioSource, waitForCompletion: false)

@objc func sceneTapped(识别器：UITapGestureRecognizer)

    shapeNode = SCNNode(geometry: myshape)

    self.myscene?.rootNode.addChildNode(shapeNode)
    shapeNode.runAction(SoundAction)

当我触摸屏幕时不会播放声音...请帮忙

【问题讨论】：

标签： ios swift xcode scenekit scnnode

【解决方案1】：

我生成了一个默认游戏项目，然后输入您的代码。起初，我收到了相同的结果。然而，当我取了 let scene = SCNScene(named: "art.scanassets/ship.scn")！并将场景设置为类变量，播放声音。或者，如果您在加载过程中添加 SoundNode 而不是在点击时添加，声音也会播放。

class GameViewController: UIViewController {

    var SoundAction = SCNAction()
    var SoundNode = SCNNode()
    var scene = SCNScene()

    override func viewDidLoad() {
        super.viewDidLoad()

        // Change this
        scene = SCNScene(named: "art.scnassets/ship.scn")!

        let cameraNode = SCNNode()
        cameraNode.camera = SCNCamera()
        scene.rootNode.addChildNode(cameraNode)
        cameraNode.position = SCNVector3(x: 0, y: 0, z: 15)

        let ship = scene.rootNode.childNode(withName: "ship", recursively: true)!
        ship.runAction(SCNAction.repeatForever(SCNAction.rotateBy(x: 0, y: 2, z: 0, duration: 1)))

        let audioSource = SCNAudioSource(named: "MenuWinner.caf")!
        audioSource.volume = 1.0
        SoundAction = SCNAction.playAudio(audioSource, waitForCompletion: false)

        let scnView = self.view as! SCNView
        scnView.scene = scene
        scnView.allowsCameraControl = true
        scnView.showsStatistics = true
        scnView.backgroundColor = UIColor.black

        let tapGesture = UITapGestureRecognizer(target: self, action: #selector(handleTap(_:)))
        scnView.addGestureRecognizer(tapGesture)
    }

    @objc
    func handleTap(_ gestureRecognize: UIGestureRecognizer) {
        scene.rootNode.addChildNode(SoundNode)
        SoundNode.runAction(SoundAction)
    }

【讨论】：