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

Question

I was testing my app on different devices and realized the sprite movements were quite inconsistent (running considerably faster on some devices as compared to others). I fo

Answer 1

Here is how your code layout should look. As you can see, I designed the scene to be the size of iPhone 6. This means on all other phones, the image will scale (but you will still see everything), but will look perfect on the 6. On the iPad, the image will get chopped off on the top and the bottom by 12.5% each, due to the iPad being a 3:4 and not 9:16

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)!
}
}

and

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")
}
}