CODEWITHSUNDEEP
iosswiftsprite-kitskspritenodeios9
user2485972
user2485972

Reputation: 168

Cannot get the 3D Audio effect for skAudioNode in SpriteKit

I am trying out the new skAudioNode which is announced in WWDC 2015. I am new to swift and spriteKit.

First in sks editor I drag an Audio object into scene and give a name as audioNodeRed which attached to a visually red sprikit node. I specify a wav file link to this node in the editor.

In GameScene.swift, I wrote: 

let redNode:SKAudioNode = childNodeWithName("//audioNodeRed") as! SKAudioNode;
let actionPlaySound = SKAction.play()
redNode.runAction(actionPlaySound)

The last line will crash with an error : terminating app due to uncaught exception 'com.apple.coreaudio.avfaudio', reason: 'required condition is false: _engine->IsRunning()'

I fixed it by specified a wav file to action by code (xcode bug?)

let actionPlaySound =SKAction.playSoundFileNamed("Crackling_Fireplace.wav", waitForCompletion: false)

Ok now I can hear the sound but there's no 3d audio effect if I move the node, I have already specify the listener position of the scene(still in GameScene.swift):

//sprite is a skSpriteNode in the center of the screen
self.listener = sprite

Another thing is I can not access the avaudioengine properties as specified in the Apple documentation. e.g.

  redAudioNode.avAudioNode //SKAudioNode does not have a member named "avAudioNode"
  myScene.audioEngine   //SKScene does not have a member named "audioEngine"

I am using XCode 7 beta version4. I want to know if I am doing something wrong here or the reason is the ios9 framework is still in beta. Thanks for the help.

-------------add----------------

OK, I got the 3d audio effect by going to the background and going back to the app again.

Upvotes: 3

Views: 845

Answers (1)

user2485972
user2485972

Reputation: 168

OK, I figure out the problem myself, apparently there is something wrong with the sks editor.

if I do it in code in stead of in the editor, I hear the 3D sound effect.

 audioNodeRed.positional = true
 audioNodeRed.autoplayLooped = true

Upvotes: 2

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