自定义`SKViews`

Question

我想在swift中为我的游戏创建一个主菜单。

我使用以下代码：

import SpriteKit

class menuScene：SKScene {

//Adding Start Button
let startButton = SKSpriteNode(imageNamed: "playButton")



override func didMove(to view: SKView) {


    //Temporary Background
    backgroundColor = SKColor.darkGray

    //Start Button
    startButton.position = CGPoint(x: size.width / 2, y: size.height / 2)
    addChild(startButton)
}

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

        if atPoint(location) == startButton {

            if let scene = GameScene(fileNamed: "GameScene") {
                scene.scaleMode = .aspectFill
                view!.presentScene(scene, transition: SKTransition.doorsOpenVertical(withDuration: 1))
            }

        }
    }
}

}

当我运行此时，我的应用程序崩溃并突出显示atPoint（location）== startButton {。用＆＃34;线程1，断点1.1＆＃34;

我不完全确定这是什么，但我希望有人可以提供帮助。谢谢！

Answer 1

自定义`SKViews`

让我们说，就像这个M.W.E.一样，你想要一个菜单，一个难度和一个游戏场景。

然后，您可以制作一系列自定义SKViews来进行转换。

GameViewController

此代码加载menuScene：

override func viewDidLoad() {
    super.viewDidLoad()

    let menuScene = MenuScene(size: view.bounds.size)

    let skView = view as! SKView
    skView.showsFPS = true
    skView.showsNodeCount = true
    skView.ignoresSiblingOrder = true
    menuScene.scaleMode = .resizeFill
    skView.presentScene(menuScene)

}

MenuScene

class MenuScene: SKScene {

    let playButton = SKLabelNode()


    override init(size: CGSize) {
        super.init(size: size)

        backgroundColor = SKColor.white

        playButton.fontColor = SKColor.black
        playButton.text = "play"

        playButton.position = CGPoint(x: size.width / 2, y: size.height / 2)

        addChild(playButton)

    }


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

    override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
        let touch = touches.first
        let touchLocation = touch!.location(in: self)

        if playButton.contains(touchLocation) {

            let reveal = SKTransition.doorsOpenVertical(withDuration: 0.5)
            let difficultyScene = DifficultyScene(size: self.size)
            self.view?.presentScene(difficultyScene, transition: reveal)

        }

    }


}

DifficultyScene

class DifficultyScene: SKScene {

    let easyButton = SKLabelNode()
    let hardButton = SKLabelNode()
    let menuButton = SKLabelNode()


    override init(size: CGSize) {
        super.init(size: size)

        backgroundColor = SKColor.white

        easyButton.fontColor = SKColor.black
        easyButton.text = "easy"

        hardButton.fontColor = SKColor.black
        hardButton.text = "hard"

        menuButton.fontColor = SKColor.black
        menuButton.text = "menu"

        easyButton.position = CGPoint(x: size.width / 2, y: size.height / 2)
        hardButton.position = CGPoint(x: size.width / 2, y: size.height / 2 - easyButton.fontSize * 2)
        menuButton.position = CGPoint(x: size.width / 4 * 3, y: size.height / 4)

        addChild(easyButton)
        addChild(hardButton)
        addChild(menuButton)

    }


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

    override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
        let touch = touches.first
        let touchLocation = touch!.location(in: self)

        if easyButton.contains(touchLocation) {
            let reveal = SKTransition.doorsOpenVertical(withDuration: 0.5)
            let gameScene = GameScene(size: self.size, difficulty: easyButton.text!)
            self.view?.presentScene(gameScene, transition: reveal)
        }

        if hardButton.contains(touchLocation) {
            let reveal = SKTransition.doorsOpenVertical(withDuration: 0.5)
            let gameScene = GameScene(size: self.size, difficulty: hardButton.text!)
            self.view?.presentScene(gameScene, transition: reveal)
        }

        if menuButton.contains(touchLocation){
            let reveal = SKTransition.doorsOpenVertical(withDuration: 0.5)
            let menuScene = MenuScene(size: self.size)
            self.view?.presentScene(menuScene, transition: reveal)
        }

    }


}

GameScene

将此添加到您的GameScene：

init(size: CGSize, difficulty: String) {
        super.init(size: size)
        gameDifficulty = difficulty
    }

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