init var with swift using SpriteKit?

Question

How to correctly init with swift using SpriteKit?

This compiles but I get a error once the simulator starts running. "swift_reportUnimplementedInitializer"

import SpriteKit

class GameScene: SKScene {

    var paddlePositionUpdate:CGPoint

    init(paddlePositionUpdate:CGPoint){
    self.paddlePositionUpdate = CGPoint.zeroPoint
    super.init()
}
}

Answer 1

The designated inititaliser for SKScene is init(size) where size is the size of your scene. You have attempted to use init() which does not exist.

You can see the exact method signature if you Cmd+click on SKScene...

EDIT: Try something like

class GameScene: SKScene {

    var paddlePositionUpdate: CGPoint

    init(size: CGSize, paddlePosition: CGPoint = CGPoint.zeroPoint){
        paddlePositionUpdate = paddlePosition
        super.init(size)
    }
}

A scene should be initialised with a size...