Sprite Kit，找不到错误

Question

请帮我找出错误。

我需要每个打击垫从阵列中播放自己的声音，但只有打击垫 13、14、15 可以。同时我在每个焊盘上放了一个带有节点名称的标签，说明该节点有一个名称，所以看起来问题不在名称中，我无法理解它是什么。 如果您对改进此代码还有其他要说的，请随时说，我是新手，很高兴听到。

我做错了什么？

谢谢

PS：我想说，我在 sprite kit 上这样做只是为了挑战。

import SpriteKit
import GameplayKit
import AVFoundation

class GameScene: SKScene {

var i = 1
let sounds  = ["Kick", "Clap","Hat","OpHat","Snare","Cow","Crash","Snap","Chant","Tom","11","12","13","14","15"]

override func didMove(to view: SKView) {

    do {

        for sound in sounds {

            let player = try AVAudioPlayer(contentsOf: URL(fileURLWithPath: Bundle.main.path(forResource: sound, ofType: "wav")!) as URL)
            player.prepareToPlay()

        }


    } catch {

    }

    var frameHightMulti = CGFloat(0)

    self.physicsWorld.gravity = CGVector(dx: 0, dy: 0)

    let tittleLabel = SKLabelNode(text: "Let the music play")
    tittleLabel.fontSize = 50
    tittleLabel.fontName = "Helvetica Nue"
    tittleLabel.fontColor = UIColor.white
    tittleLabel.position = CGPoint(x: 0, y: 600)
    addChild(tittleLabel)

    for _ in 1...5 {

        var frameWidthMulti = CGFloat(0)

        for _ in 1...3 {

            let pad = SKSpriteNode(color: UIColor.cyan, size: CGSize(width: 220, height: 220))
            pad.physicsBody = SKPhysicsBody(rectangleOf: pad.frame.size)
            pad.position = CGPoint(x: -240 + frameWidthMulti, y: -500 + frameHightMulti)
            pad.name = sounds[i-1]


            let nameLabel = SKLabelNode(text: pad.name)
            nameLabel.fontSize = 50
            nameLabel.fontName = "Helvetica Nue"
            nameLabel.fontColor = UIColor.black
            nameLabel.position = pad.position

            addChild(pad)

            addChild(nameLabel)

            frameWidthMulti += pad.size.width + 20
            i += 1
        }

        frameHightMulti +=  240


    }



}



override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {

    let touchLocation = touches.first?.location(in: self)

    if let body = self.physicsWorld.body(at: touchLocation!){

        if let z = body.node?.name {

            switch z {

            case "15":
                self.run(SKAction.playSoundFileNamed("15", waitForCompletion: false))
                print(z)
            case "14":
                self.run(SKAction.playSoundFileNamed("14", waitForCompletion: false))
                print(z)
            case "13":
                self.run(SKAction.playSoundFileNamed("13", waitForCompletion: false))
                print(z)
            case "12":
                self.run(SKAction.playSoundFileNamed("12", waitForCompletion: false))
                print(z)
            case "11":
                self.run(SKAction.playSoundFileNamed("11", waitForCompletion: false))
                print(z)
            case "Tom":
                self.run(SKAction.playSoundFileNamed("Tom", waitForCompletion: false))
                print(z)
            case "Crash":
                self.run(SKAction.playSoundFileNamed("Crash", waitForCompletion: false))
                print(z)
            case "Snap":
                self.run(SKAction.playSoundFileNamed("Snap", waitForCompletion: false))
                print(z)
            case "Chant":
                self.run(SKAction.playSoundFileNamed("Chant", waitForCompletion: false))
                print(z)
            case "Cow":
                self.run(SKAction.playSoundFileNamed("Cow", waitForCompletion: false))
                print(z)
            case "Snare":
                self.run(SKAction.playSoundFileNamed("Snare", waitForCompletion: false))
                print(z)
            case "OpHat":
                self.run(SKAction.playSoundFileNamed("OpHat", waitForCompletion: false))
                print(z)
            case "Hat":
                self.run(SKAction.playSoundFileNamed("Hat", waitForCompletion: false))
                print(z)
            case "Clap":
                self.run(SKAction.playSoundFileNamed("Clap", waitForCompletion: false))
                print(z)
            case "Kick":
                self.run(SKAction.playSoundFileNamed("Kick", waitForCompletion: false))
                print(z)

            default: print("Shit hpns")
            }

        }

    }

}

override func update(_ currentTime: TimeInterval) {
    // Called before each frame is rendered
}
}

printing names

Answer 1

AVAudioPlayer 与 SKAction 不同，因此不需要您调用的 do/catch 方法来使用您的声音名称准备 AVAudioPlayer。 AVAudioPlayer 主要用于背景音乐。

因此，您可以像在 touches started 方法中所做的那样简单地调用 SKAction，无需任何预先设置。您通常会这样称呼它们，名称中带有正确的文件扩展名。

run(SKAction.playSoundFileNamed("Kick.wav", waitForCompletion: false))

作为提示，您应该将这些声音动作创建为您的类的属性，以便它们被预加载并准备好使用。如果您只是直接在 touchesBegan 方法中调用该操作，您很可能会在第一次需要预加载声音文件时看到一些延迟/卡顿。

试试这样的

 enum SoundName: String { // store sound names like this to avoid typos
     case kick = "Kick.wav"
     case klap = "Klap.wav"
     ...
 }

 var sounds = [String: SKAction]()
 var soundNames = [SoundName.kick.rawValue, SoundName.klap.rawValue, etc]

比你这样设置它们

func didMove(to view: SKView) {

     for soundName in soundNames {
          let soundAction = SKAction.playSoundFileNamed(sound, waitForCompletion: false) 
          sounds.updateValue(soundAction, forKey: soundName)
     }
}

当你想玩它们时，你可以这样说

if let sound = sounds[SoundName.kick.rawValue] { // safely unwrap dict value as it might not exist
    run(sound)
}

还要确保在创建精灵/垫时正确设置节点名称，否则 touchesBegan 中的 switch 语句将不起作用。 不知道为什么你在那一点上有2个循环。检查该部分并确保您的焊盘具有正确的名称，使用打印语句查看发生了什么。

在你的 touchesMethod 中也试试这个。

   override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
       for touch in touches {
            let location = touch.location(in: self)
            let node = atPoint(location)

            if let nodeName = node.name {

                 switch nodeName {

                 case SoundName.kick.rawValue:
                       if let sound = sounds[SoundName.kick.rawValue] {
                          run(sound)
                        }  
                ...
                default:
                   break
            }
       }
  }

希望对你有帮助