How can I load a spritekit file different than GameScene.swift in my GameViewController.swift? - xcode

Question

In GameViewController.swift, I find this line
if let scene = GameScene(fileNamed:"GameScene") {
and I always thought that if I wanted to load something other than GameScene.swift, I could just change "GameScene" to "LandingPage" and everything would work just dandy. However, as I recently figured out, "GameScene" here actually refers to GameScene.sks and not the swift file.
I'm looking to make a game with a number of levels, each written in its own swift file. Where do I go to/ how do I move from, say, level1.swift to level2.swift?

Answer 1

if you are in one scene for example level selection scene, lets say LevelSelectionScene.swift, you can go to another scene via SKView's -presentScene:transition: method.
class LevelSelectionScene: SKScene {
override func didMoveToView(view: SKView) { /* ... */}
func selectLevel(level: Int) {
let fadeTransition = SKTransition.fadeWithDuration(0.3)
if let selectedLevel = createLevelSceneWithLevel(level) {
self.view?.presentScene(selectedLevel, transition: fadeTransition)
}
}
// Not a good idea if you progressively adding new levels,
// it's totally depend on how you gonna organize your levels.
// Since its level input is not arbitrary, the output of this
// rarely nil, if it does, it must be the developer mistake.
func createLevelSceneWithLevel(level: Int) -> SKScene? {
let levelScene: SKScene?
switch level {
case 1: levelScene = Level1()
case 2: levelScene = Level2()
default: levelScene = nil
}
return levelScene
}
}

Answer 2

As somebody above has said the line "fileNamed: "GameScene" "
if let scene = GameScene(fileNamed:"GameScene") {
references the GameScene.sks file, which is the equivalent of storyboard for games.
If you create a new SKScene class and try to load it this way, either from another SKScene or the gameViewController it will not work because it cannot find the corresponding sks file.
I am not 100% sure how to create a new sks file because I dont use it in my games.
If you just want to load a new scene you created you would use this code in your gameViewController
let skView = self.view as! SKView
let scene = NewScene(size: skView.bounds.size)
skView.ignoresSiblingOrder = true
skView.multipleTouchEnabled = true
scene.scaleMode = .AspectFill
skView.presentScene(scene)
If you want to load another scene from a SKScene class its basically the same code
let newScene = NewScene(size: self.size) //size of current scene
let transition = SKTransition.doorsCloseHorizontalWithDuration(0.5) // use transition between 2 SKScenes
let skView = self.view as! SKView
skView.ignoresSiblingOrder = true
skView.multipleTouchEnabled = true
newScene.scaleMode = .AspectFill
skView.presentScene(newScene, transition: transition)
or a slightly cleaner version
let newScene = NewScene(size: self.size)
let transition = SKTransition.doorsCloseHorizontalWithDuration(0.5)
newScene.scaleMode = SKSceneScaleMode.AspectFill
self.view?.presentScene(newScene, transition: transition)

Answer 3

You can specify a custom class name for each scene file in the Custom Class Inspector. That's the right most tab in the Utilities pane.
The custom class (must be a subclass of SKScene) is loaded when the sks file is loaded.