致命错误:为类使用未实现的初始化程序'init(size :)'

Question

我在不同的设备上测试我的应用程序,并意识到精灵运动非常不一致(在某些设备上运行速度比其他设备快得多).我发现这篇文章并按照说明从我所有的SKScenes中删除了大小参数然后我得到了错误:

fatal error: use of unimplemented initializer 'init(size:)' for class 'SuperGame.PosterScene'

请参阅PosterScene下面的GameViewController课程以及调用它的课程.

PosterScene

class PosterScene: SKScene {

 override init(){
    super.init()

    let posterImage = SKSpriteNode(imageNamed: "poster")
    posterImage.position = CGPoint(x: self.frame.midX, y: self.frame.midY)
    self.addChild(posterImage)

    let sequence = SKAction.sequence([  SKAction.wait(forDuration: 3.0), SKAction.run({ self.changeToMainMenuScene() }) ])

    self.run(sequence)

}

func changeToMainMenuScene  ()  {

    let mainMenuScene = MainMenuScene()
    self.view!.presentScene(mainMenuScene)

}

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

GameViewController:

class GameViewController: UIViewController {

override func viewDidLoad() {
    super.viewDidLoad()

}

override func viewWillLayoutSubviews() {
    super.viewWillLayoutSubviews()

    let skView = self.view as? SKView

    if skView?.scene == nil  {
        skView?.showsFPS = true
        skView?.showsNodeCount = true
        skView?.showsPhysics = true
        skView?.ignoresSiblingOrder = false

        //starting the game with the Poster Scene
        let posterScene = PosterScene()
        posterScene.scaleMode = .resizeFill
        skView?.presentScene(posterScene)
    }

}

override var shouldAutorotate : Bool {
    return true
}

override var supportedInterfaceOrientations : UIInterfaceOrientationMask {
    if UIDevice.current.userInterfaceIdiom == .phone {
        return UIInterfaceOrientationMask.allButUpsideDown
    } else {
        return UIInterfaceOrientationMask.all
    }
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Release any cached data, images, etc that aren't in use.
}

override var prefersStatusBarHidden : Bool {
    return true
}

required init(coder aDecoder: NSCoder!) {
    super.init(coder: aDecoder)!
}
}

Answer 1

您的代码布局应如下所示。正如您所看到的，我将场景设计为 iPhone 6 的大小。这意味着在所有其他手机上，图像都会缩放（但您仍然会看到所有内容），但在 6 上看起来很完美。在 iPad 上，由于 iPad 的比例为 3:4 而不是 9:16，图像的顶部和底部将各被截断 12.5%

class GameViewController: UIViewController {

override func viewDidLoad() {
    super.viewDidLoad()

}

override func viewWillLayoutSubviews() {
    super.viewWillLayoutSubviews()

    let skView = self.view as? SKView

    if skView?.scene == nil  {
        skView?.showsFPS = true
        skView?.showsNodeCount = true
        skView?.showsPhysics = true
        skView?.ignoresSiblingOrder = false

        //starting the game with the Poster Scene
        let posterScene = PosterScene(size:CGSize(width:375,height:667))
        posterScene.scaleMode = .aspectFill
        skView?.presentScene(posterScene)
    }

}

override var shouldAutorotate : Bool {
    return true
}

override var supportedInterfaceOrientations : UIInterfaceOrientationMask {
    if UIDevice.current.userInterfaceIdiom == .phone {
        return UIInterfaceOrientationMask.allButUpsideDown
    } else {
        return UIInterfaceOrientationMask.all
    }
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Release any cached data, images, etc that aren't in use.
}

override var prefersStatusBarHidden : Bool {
    return true
}

required init(coder aDecoder: NSCoder!) {
    super.init(coder: aDecoder)!
}
}

和

class PosterScene: SKScene {

 override init(size:CGSize){
    super.init(size:size)
    self.anchorPoint = CGPoint(x:0.5,y:0.5) //let's put 0,0 at the center of the screen
    let posterImage = SKSpriteNode(imageNamed: "poster")
    posterImage.position = CGPoint.zero
    self.addChild(posterImage)

    let sequence = SKAction.sequence([  SKAction.wait(forDuration: 3.0), SKAction.run({ self.changeToMainMenuScene() }) ])

    self.run(sequence)

}

func changeToMainMenuScene  ()  {

    let mainMenuScene = MainMenuScene()
    self.view!.presentScene(mainMenuScene)

}

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