SKAudioNode has issues doing SKActions in Xcode 9b2

Question

so i have a project that run perfectly fine on xcode 8 but when i am trying to run it on xcode 9b2 it crashes.

i am creating audionode:

let birdSound = SKAudioNode(fileNamed: "fly.mp3")

add it to scene and it works. but if i am doing actions like:

birdSound.run(SKAction.changeVolume(to: 0, duration: 0))
birdSound.run(SKAction.changePlaybackRate(to: 1.1, duration: 0))

it will crash with

AURemoteIO::IOThread (14): EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0)

last debug lines are:

177: Failed to set processVolumeScalar on device. Error: 560947818 93: ASSERTION FAILURE:

what is going on and why i cant do any SKActions on audio nodes? any thoughts?

When are you creating the audio node? It may not be attached to the audio engine yet. — Knight0fDragon, Aug 18 '17 at 22:38
its inside a class. init has these SKActions. instance of a class is created inside of gamescene and in didMoveTo it is added to a scene — Anton Shevtsov, Aug 19 '17 at 19:33
you can't do it during init, the node is not attached to the scene yet, so there is no audio engine — Knight0fDragon, Aug 19 '17 at 19:34
ok i will try to make a func setup() with all the audio stuff and call it after i addChild it — Anton Shevtsov, Aug 19 '17 at 19:36
you can check if the audio engine exists by `if let _ = scene?.audioEngine` — Knight0fDragon, Aug 19 '17 at 19:38
i encapsulated all audio stuff inside a method of this object class. and after i add this object to a scene i perform an audio engine exist check and setup audio. and it still crashes but works fine in xcode 8 — Anton Shevtsov, Aug 19 '17 at 20:32

score 0 · Accepted Answer · answered Aug 20 '17 at 16:36

0

in xcode 9b5 it works fine :/ false alarm

answered Aug 20 '17 at 16:36

Anton Shevtsov

1 Answers1