SWIFT AVAudioPlayer multiple scenes in Game, stop not working

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very similar to this question:

Using AVAudioPlayer across multiple scenes Swift and be able to adjust volume

I want to play BGmusic across multiple scenes, but i need it to STOP when i enter certain scenes.

So for example, all my menu scenes should play the music, but when i enter the GamePlayScene the current music should stop and new music should play.

I've implemented the fix in the above post, (changed it a bit for my needs) but it isn't working... what happens now is the BGmusic continues to play and then my game music plays also

        if let vc = UIApplication.sharedApplication().keyWindow?.rootViewController as? GameViewController{
            vc.menuMusicPlayer.stop()
            println("stop the bg audio")
        }

this println isn't even being executed - suggesting the if isn't true?

my GameViewController is parent to all my scenes...

not sure where I am going wrong here. Any advice?

GameViewController code - inside override func viewDidLoad{

var menuMusicPlayer:AVAudioPlayer = AVAudioPlayer()


var bgMusicURL:NSURL = NSBundle.mainBundle().URLForResource("BalloonPop99_menuSounds", withExtension: "m4a")!
menuMusicPlayer = AVAudioPlayer(contentsOfURL: bgMusicURL, error: nil)
menuMusicPlayer.volume = 0.25
menuMusicPlayer.numberOfLoops = -1
menuMusicPlayer.prepareToPlay()
if music_on == true && menuMusicPlayer.playing == false { menuMusicPlayer.play() }

and i also have a func to stop the music in GameViewController I've tried triggering the func or just telling menuMusicPlayer to stop() directly and neither are working.

func BGMusicStop() {
    if menuMusicPlayer.playing == true {
        menuMusicPlayer.stop()
    println("bg music should stop")
    }
}

asked 51 secs ago

Adam

11

SWIFT AVAudioPlayer multiple scenes in Game, stop not working