Setting Up Your Game Scene and Adding Your First Sprites - Beginning Swift Games Development for iOS - page 11

SKSceneScaleMode Definition

The ResizeFill mode will modify the size of the scene to
fit the hosting view exactly.

SKSceneScaleMode.ResizeFill

Note When setting the scaleMode property of the scene, you are using a
shortened syntax to represent the mode you are setting, specifically, the
.AspectFill mode. You can use this dot syntax because you know the type
of the scaleMode property is an SKSceneScaleMode , which is an enum
containing all of the scale modes.

Once you have the view and the scene configured, there is only one last thing to
do—present the scene. This is done with the last line in viewDidLoad() .

skView.presentScene(scene)

The GameScene Class
Now that I have walked you through each line of the GameViewController class, it
is time to talk about the GameScene class. Again, for convenience's sake, I am including
the source for the GameScene.swift file a second time:

import SpriteKit
class GameScene: SKScene {
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)

}
override init(size: CGSize) {
super.init(size: size)
backgroundColor = SKColor(red: 0.0, green: 0.0,
blue: 0.0, alpha: 1.0)
}

}

As you look over GameScene , you will notice there is really not much to it. It extends
SKScene and implements two init() methods; the first init() that takes an
NSCoder can be ignored. You had to add this only because a Swift class does not inherit