Subclass of SKEmitterNode not calling init or deist - swift

Question

I am able to initialize this class, and see my particle effect, but the subclass doesn't call init() or deinit. Why?
class Particles: SKEmitterNode {
var test: Int?
override init() {
test = 1
super.init()
println("created particle emitter")
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
deinit {
println("destroyed particle emitter")
}
}
This is called from GameScene()
let particle = Particles(fileNamed:"test")
and I tried this to:
var particle: Particles?
viewDidLoad:
particle = Particles(fileNamed:"test")

Answer 1

Subclasses can only call superclass designated initialiser so cannot call super.init(fileNamed:). A workaround is not to make an initialiser at all but make a class method and perform setup code in there.
I copied the code apple provides to unarchive an sks scene and changed it to work with your emitter. The method finds the particle file if it exists and unarchives it as a Particles object:
class Particles: SKEmitterNode {
var test: Int?
class func fromFile(file : String) -> Particles? {
if let path = NSBundle.mainBundle().pathForResource(file, ofType: "sks") {
var data = NSData(contentsOfFile: path, options: .DataReadingMappedIfSafe, error: nil)!
var archiver = NSKeyedUnarchiver(forReadingWithData: data)
archiver.setClass(self.classForKeyedUnarchiver(), forClassName: "SKEmitterNode")
let p = archiver.decodeObjectForKey(NSKeyedArchiveRootObjectKey) as Particles
archiver.finishDecoding()
//Perform any setup here
p.test=11
return p
}
return nil
}
}
and use it like so:
let p=Particles.fromFile("MyParticle")!
p.test=0
p.particleSpeed=10
addChild(p)