Accessing functions of another class - iphone

Question

So I have a class called GameScene which has a function called makeBackground. In another class called I created an instance of it (GameScene) and called makeBackground as follows in the didMoveToView of the new class:
var gameSceneInstance:GameScene = GameScene()
gameSceneInstance.makeBackground()
However when I run it, nothing happens!
This is the function makeBackground:
func makeBackground ()
{
let bgTxt = SKTexture(imageNamed: "bg.png")
let moveBg = SKAction.moveByX(0, y: -bgTxt.size().height, duration: 5)
let replaceBg = SKAction.moveByX(0, y: bgTxt.size().height, duration: 0)
let moveBgAnimation = SKAction.repeatActionForever(SKAction.sequence([moveBg, replaceBg]))
//-----background-----
for var i:CGFloat = 0 ; i<3; i++
{
bg = SKSpriteNode(texture: bgTxt)
bg.position = CGPoint(x: CGRectGetMidX(self.frame), y: bgTxt.size().height/2 + bgTxt.size().height * i)
bg.size.width = self.frame.width
bg.runAction(moveBgAnimation)
movingObjects.addChild(bg)
}
}
Do I have to copy and paste the makeBackground function into the new class to make it work?
Similarly, in the didMoveToView of the GameScene class, I have some sprites. Can I use them in this new class?
Thanks!

Answer 1

if you created an instance of the GameScene object and called the makeBackground function and nothing happened then there is something wrong with your code in the makeBackground function.
Also in another topic, instance objects which are created in a class are equeals of each other and cannot be used within each others methods unless they are specifically passed in. Perhaps you can make a method in your GameScen object with which you could pass these sprites in either as a list of sprites or as individual sprites