SpriteView 渲染的 SKScene 文件显示空灰色背景/框？

Question

我正在尝试使用 SpriteView() 渲染我的 SKScene 文件。它不显示场景，而只显示空的灰色背景。我用两个不同的 SKScene 文件尝试了这个，它们都被渲染为灰色背景。

但是，如果我完全在代码中定义和初始化一个新的 SKScene（即不使用 SKScene 文件和可视化编辑器），并使用 SpriteView() 渲染它，它工作正常。

我做错了什么？

---

这里是我的测试代码的例子：

这是渲染SKScene文件的代码。结果：灰色屏幕。注意 GameScene 是一个 SKScene 文件，带有随附的 swift 文件。

import SwiftUI
import SpriteKit

var scene: SKScene {
    let scene = GameScene()
    scene.scaleMode = .aspectFill
    return scene
}

struct ContentView: View {
    var body: some View {
        
        SpriteView(scene: scene)
            .ignoresSafeArea()
    }
}

//  to view canvas
struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}

完全在代码中创建 SKScene 的代码。结果：正确显示场景，交互有效。

import SwiftUI
import SpriteKit

class CodeScene: SKScene {
    override func didMove(to view: SKView) {
        physicsBody = SKPhysicsBody(edgeLoopFrom: frame)
    }

    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
        guard let touch = touches.first else { return }
        let location = touch.location(in: self)
        let box = SKSpriteNode(color: .red, size: CGSize(width: 50, height: 50))
        box.position = location
        box.physicsBody = SKPhysicsBody(rectangleOf: CGSize(width: 50, height: 50))
        addChild(box)
    }
}

// A sample SwiftUI creating a GameScene and sizing it
// at 300x400 points
struct ContentView: View {
    var scene: SKScene {
        let scene = CodeScene()
        scene.size = CGSize(width: 300, height: 400)
        scene.scaleMode = .fill
        return scene
    }

    var body: some View {
        SpriteView(scene: scene)
            .frame(width: 300, height: 400)
            .ignoresSafeArea()
    }
}

    struct ContentView_Previews: PreviewProvider {
        static var previews: some View {
            ContentView()
        }
    }

编辑：添加游戏场景 swift 文件：

import SpriteKit

class GameScene: SKScene {
    
    private var Player: SKSpriteNode!
    
    override func didMove(to view: SKView) {
        Player = childNode(withName: "//Player") as? SKSpriteNode
    }
    
    
    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
        
        guard let touch = touches.first else { return }
        let touchLocation = touch.location(in: self)
        let distance = sqrt(pow(touchLocation.x - Player.position.x, 2) + pow(touchLocation.y - Player.position.y, 2))
        let speed: CGFloat = 120.0 // adjust as needed
        let duration = TimeInterval(distance / speed)
        let moveAction = SKAction.move(to: touchLocation, duration: duration)
        Player.run(moveAction)
    }
    
    override func update(_ currentTime: TimeInterval) {
        // Called before each frame is rendered
    }
}