SpriteKit操场在iPad上运行时显示错误

Question

我通常在处理代码时遇到麻烦，但是当我在Xcode上作为游乐场运行它时，它可以正常工作，但是当我在iPad Pro上的游乐场应用程序中运行它时，它给了我错误：“出现了问题运行这个游乐场。请检查您的代码，然后重试。”谁能帮我这个？谢谢。这是我的代码：

import Foundation
import SwiftUI
import PlaygroundSupport
import AVFoundation
import SpriteKit


struct ContentView: View {
    var body: some View {
        GameView()
    }
}

struct GameView: UIViewRepresentable {
let scene = GameScene(fileNamed: "GameScene2")
func makeUIView(context: Context) -> SKView {
    // Let SwiftUI handle the sizing

    return SKView(frame: .zero)
}

func updateUIView(_ uiView: SKView, context: Context) {

    scene?.scaleMode = .aspectFit
    uiView.presentScene(scene)
}
}

class GameScene: SKScene {

private var thrustButton: SKSpriteNode!
private var speedLabel: SKLabelNode!
var gameView = SKView()
private var moonSurface: SKSpriteNode!
private var moonLander: SKSpriteNode!
private var altimiter: SKLabelNode!
let cam = SKCameraNode()

override func didMove(to view: SKView) {
    // Get label node from scene and store it for use later
    super.didMove(to: view)
    self.gameView = view



    self.camera = cam
    altimiter = childNode(withName: "//altimiter") as? SKLabelNode
    thrustButton = childNode(withName: "//thrustButton") as? SKSpriteNode
    speedLabel = childNode(withName: "//speedLabel") as? SKLabelNode
    moonLander = childNode(withName: "//moonLander") as? SKSpriteNode
    moonSurface = childNode(withName: "//moonSurface") as? SKSpriteNode



}

@objc static override var supportsSecureCoding: Bool {
    // SKNode conforms to NSSecureCoding, so any subclass going
    // through the decoding process must support secure coding
    get {
        return true
    }
}

func touchDown(atPoint pos : CGPoint) {

}

func touchMoved(toPoint pos : CGPoint) {

}

func touchUp(atPoint pos : CGPoint) {

}

override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
    for t in touches { touchDown(atPoint: t.location(in: self))
        let location = t.location(in: self)
        let touchedNode = atPoint(location)
        if touchedNode.name == "thrustButton" {
            moonLander.physicsBody?.applyForce(CGVector(dx: 0, dy: 40))
        }
    }
}

override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
    for t in touches { touchMoved(toPoint: t.location(in: self)) }
}

override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
    for t in touches { touchUp(atPoint: t.location(in: self)) }
}

override func touchesCancelled(_ touches: Set<UITouch>, with event: UIEvent?) {
    for t in touches { touchUp(atPoint: t.location(in: self)) }
}

override func update(_ currentTime: TimeInterval) {
    // Called before each frame is rendered
    cam.position = moonLander.position
    speedLabel.position = CGPoint(x: moonLander.position.x - 400, y: moonLander.position.y + 450)
    speedLabel.color = .white
    thrustButton.position = CGPoint(x: moonLander.position.x - 370, y: moonLander.position.y - 500)
    altimiter.position = CGPoint(x: moonLander.position.x - 400, y: moonLander.position.y + 380)
    speedLabel.text = "Your Speed is: \(moonLander.physicsBody!.velocity.dy.rounded())"
    altimiter.text = "Your altitude is: \(moonLander.position.y - moonSurface.position.y.rounded() - 1937)"
}
}

PlaygroundPage.current.liveView = UIHostingController(rootView: ContentView().environmentObject(PlayerUIView()))

Answer 1

这是一个错误；删除Playgrounds应用，然后重试。