Moving between scenes in a Sprite Kit?

Question

Let's say I start with the initialScene scene. This scene contains several buttons. When the user clicks button A in this scene, I represent sceneA . So my code will look like this:

 sceneA* scene = [[sceneA alloc] init]; [self.scene.view presentScene: scene]; 

My first question is: when a sceneA instance sceneA presented from initialScene , does it fit on top of the initialScene instance or replace it? Does the initialScene instance initialScene into memory when a new scene appears?

I ask about this because sceneA will have a back button which, when clicked, returns the user to the original scene. Can I just create a new instance of initialScene inside sceneA and present it, or will this lead to multiple instances of the same scenes stacked on top of each other? Basically, can I just do this in sceneA ?:

 if(...) { //if user taps back button initialScene* iniScene = [[initialScene alloc] init]; [self.scene.view presentScene: iniScene]; } 

Or is there a better way to do this? Please let me know if I can explain this further.

Answer 1

Sprite Kit simplifies the transition between scenes. You can also constantly keep scenes around you or get rid of them when you transition between them. In this example, you create a second scene to explore some other game behavior. When "Hello world!" the text disappears from the screen, the code creates a new scene and proceeds to it. Hello scene will exit after the transition.

Sprite Kit Programming Guide

https://developer.apple.com/library/ios/documentation/GraphicsAnimation/Conceptual/SpriteKit_PG/GettingStarted/GettingStarted.html#//apple_ref/doc/uid/TP40013043-CH2-SW10