创建的按钮出现在游戏中的其他场景中

Question

// 按钮 class

class 按钮：UIButton {

override init(frame: CGRect){
    super.init(frame: frame)
  setup()
}

required init?(coder: NSCoder) {
    fatalError("init(coder:) has not been implemented")
}

func setup(){
    backgroundColor = #colorLiteral(red: 0.1215686277, green: 0.01176470611, blue: 0.4235294163, alpha: 1)
    layer.cornerRadius = 12
    layer.masksToBounds = false
    translatesAutoresizingMaskIntoConstraints = false
}

}

// 创建按钮对象的Class

构造问题{ var 问题：字符串！ var 答案：[字符串]！ var AnswerNumber：整数！ }

class LevelOne：SKScene {

var button = Button()

var buttons = [Button]()
let Question_met = UILabel(frame: CGRect(x: 0.3, y: 0.3, width: 40, height: 21))

var Questions = [Question]()

var QNumber = Int()

var buttonNames = [""]

var AnsNumber = Int()

let selectors:[Selector] = [#selector(handleButton1), #selector(handleButton2), #selector(handleButton3),#selector(handleButton4)]

override func didMove(to view: SKView) {
    
    let background = SKSpriteNode(imageNamed: "background")
    background.position = CGPoint(x: self.size.width/2, y: self.size.height/2)
    background.zPosition = 0
    self.addChild(background)
    
    questionFunction()
    
    buttonFuction()
     
    pickQuestion()
    
}

@objc func questionFunction(){
    
    Questions = [Question(Question: "What is a BMW ?", Answers: ["Bat","Cat","Vehicle","Pat"], AnswerNumber: 2),
    Question(Question: "What is a Boeing ?", Answers: ["Bat","Aircraft","Cat","Pat"], AnswerNumber: 1),
    Question(Question: "What is a Ant ?", Answers: ["Insect","Cat","Insect","Nate"], AnswerNumber: 2),
    Question(Question: "What is a Apple ?", Answers: ["Fruit","Cat","bat","Pat"], AnswerNumber: 0),
    Question(Question: "Where is london ?", Answers: ["UK","USA","France","Germany"], AnswerNumber: 0),
    Question(Question: "Where is New York ?", Answers: ["Canada","USA","France","Germany"], AnswerNumber: 2),
    Question(Question: "where is Berlin ?", Answers: ["UK","USA","Italy","Germany "], AnswerNumber: 3),
    Question(Question: "Where is Toronto ?", Answers: ["India","Africa","Canada","Norway"], AnswerNumber: 2),
    Question(Question: "Where is Rome ?", Answers: ["Japan","China","Italy","Ireland"], AnswerNumber: 2),
    Question(Question: "where is Chennai ?", Answers: ["India","Brazil","Swiss","Germany"], AnswerNumber: 0),]
    
    Question_met.frame = CGRect(x: 330, y: 70, width: 200, height: 21)
    Question_met.backgroundColor = UIColor.orange
    Question_met.textColor = UIColor.white
    Question_met.textAlignment = NSTextAlignment.center
    Question_met.text = "What caused Global Warming ?"
    self.view?.addSubview(Question_met)
    
}

@objc func buttonFuction(){
    
    let stacView = UIStackView()
    stacView.spacing = 12
    stacView.distribution = .fillEqually
    stacView.axis = .horizontal
    stacView.translatesAutoresizingMaskIntoConstraints = false
    view!.addSubview(stacView)
    
    buttonNames = ["One","Two","Three","Four"]
    
    for i in 0..<4{
        
        button = Button()
        button.setTitle(buttonNames[i], for: .normal)
        stacView.addArrangedSubview(button)
        buttons.append(button)
        button.addTarget(self, action: selectors[i], for: .touchUpInside)
        
    }

    NSLayoutConstraint.activate([stacView.centerXAnchor.constraint(equalTo: view!.centerXAnchor),stacView.centerYAnchor.constraint(equalTo: view!.centerYAnchor),stacView.widthAnchor.constraint(equalToConstant: 350),stacView.heightAnchor.constraint(equalToConstant:70)])
    
}

@objc func pickQuestion(){
    
    if Questions.count > 0{
        QNumber = 0
        Question_met.text = Questions[QNumber].Question
        
        AnsNumber = Questions[QNumber].AnswerNumber
        
        for i in 0..<buttons.count{
            buttons[i].setTitle(Questions[QNumber].Answers[i], for: .normal)
        }
        Questions.remove(at: QNumber)
    }
    else {
        print("Done!")
        
        let sceneToMoveTo = Instructions(size: self.size)
        sceneToMoveTo.scaleMode = self.scaleMode
        let myTransition = SKTransition.fade(withDuration: 0.5)
        self.view!.presentScene(sceneToMoveTo, transition: myTransition)
        
    }
}

@objc func handleButton1() {
    
    if AnsNumber == 0 {
        pickQuestion()
        print("Correct!")
    }
    
    else {
        print("You are Wrong!!!")
    }
}

@objc func handleButton2(){
    
    if AnsNumber == 1 {
        pickQuestion()
        print("Correct!")
    }
    
    else {
        print("You are Wrong!!!")
    }
    
}

@objc func handleButton3(){
    
    if AnsNumber == 2 {
        pickQuestion()
        print("Correct!")
    }
    
    else {
        print("You are Wrong!!!")
        
    }
    
}

@objc func handleButton4(){
    
    if AnsNumber == 3 {
        pickQuestion()
        print("Correct!")
    }
    
    else {
        print("You are Wrong!!!")
    }
    
}

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


}

}

我目前正在开发一款游戏，其中包含各种关卡和菜单场景。当前级别创建了一个问题标签和答案按钮，即使在级别完成并且您导航到另一个场景后，无论您导航到哪个场景，按钮和问题都会保留在场景中。

我希望得到一个解决方案，让按钮和标签只出现在指定的场景中，而不出现在其他场景中，除非有说明。

提前谢谢你。

Answer 1

我认为您不了解此处的所有权模型。 ViewController 拥有它的视图。视图拥有 SKView，SKView 拥有 SKScene。有一个从 SKScene 到它的 SKView 的后向指针，您正在使用它来将 UIKit StakcView 添加到场景的父视图。由于 UIKit 位于 SKScene 之上，因此您的按钮始终可见。这里正确的架构是视图应该添加和管理它自己的子视图。每当它加载一个新的 SKScene 时，它应该确定该场景需要什么 UI，然后隐藏任何不应显示的 UI。您只需在相关视图上设置 .isHidden 即可。

创建的按钮出现在游戏中的其他场景中

Created Buttons appear in other scenes within the Game

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skspritenode