Spritekit 和 swiftui，更好地改变场景 [英] Spritekit and swiftui, change scene a better way

问题描述

我编写了这几行简单的代码，使用 SpriteKit 在 Swiftui 中的 2 个场景之间进行切换，我试图了解是否有(更好的)不同方式使用按钮从一个场景切换到另一个场景.

struct ContentView: 查看 {@StateObject var firstscene = FirstScene()@StateObject var secondscene = SecondScene()@State var changeScene = falsevar主体:一些视图{ZStack{如果改变场景{SpriteView(场景:第一个场景)} 别的 {SpriteView(场景:第二场景)}按钮 {changeScene.toggle()} 标签: {文本(更改")}}}}

//使用SKscene的子类创建的2个SKScene

<预><代码>类 FirstScene: SKScene, ObservableObject {让 firstScene = SKScene(fileNamed: "FirstScene")覆盖 func didMove(查看:SKView){场景?.视图?.presentScene(firstScene)}}类 SecondScene: SKScene, ObservableObject {让 secondScene = SKScene(文件名:SecondScene")覆盖 func didMove(查看:SKView){场景?.视图?.presentScene(secondScene)}}

现在我的疑问是，我正在使用 var changeScene 更改 contentView 中的 SpriteView，可以使用另一种方法以其他方式完成相同的事情吗?

对任何建议持开放态度，我正在尝试理解这个框架.

谢谢

解决方案

您正在使用标准的视图切换方式.你可以像这样清理你的代码:

struct ContentView: 查看 {@State var changeScene = falsevar主体:一些视图{ZStack{SpriteView(scene: (changeScene ? FirstScene() : SecondScene()))//这是一个三元运算符按钮 {changeScene.toggle()} 标签: {文本(更改")}}}}

新视图不需要是@StateObjects.您可以直接在视图中调用视图类型.

注意:我不在电脑旁，所以没有测试.

I wrote this simple few line of code to swap between 2 scene in Swiftui using SpriteKit, I'm try to understand if there could be a (better) different way to change from one scene to another using a button.

struct ContentView: View {
    @StateObject var firstscene = FirstScene()
    @StateObject var secondscene = SecondScene()
    @State var changeScene = false
    var body: some View {
        ZStack{
            
            if changeScene {
                SpriteView(scene: firstscene)
            } else {
                SpriteView(scene: secondscene)
            }
            
            Button {
                changeScene.toggle()
            } label: {
                Text("Change")
            }
        }
    }
}

// the 2 SKScene created using a sub class of SKscene

class FirstScene: SKScene, ObservableObject {
    let firstScene = SKScene(fileNamed: "FirstScene")
    override func didMove(to view: SKView) {
        scene?.view?.presentScene(firstScene)
    }
    
}
class SecondScene: SKScene, ObservableObject {
    let secondScene = SKScene(fileNamed: "SecondScene")
    override func didMove(to view: SKView) {
        scene?.view?.presentScene(secondScene)
    }
}

now my doubt is, I'm change the SpriteView in the contentView using a var changeScene, could be done the same things in some other way using another approach?

open to any suggestions, I'm try to understand this framework .

thanks

解决方案

You are using a standard way of switching views. You could clean your code up a bit like this:

struct ContentView: View {
    @State var changeScene = false
    var body: some View {
        ZStack{
                SpriteView(scene: (changeScene ? FirstScene() : SecondScene())) // this is a terniary operator 
        
            Button {
                changeScene.toggle()
            } label: {
                Text("Change")
            }
        }
    }
}

The new views do not need to be @StateObjects. You can call the View Types directly in your view.

Note: I am away from my computer so this is not tested.

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