This Issue is about

• A bug in the API:
  • Phaser version(s): 2.16.2
  • Live example: /
  • What steps produce the bug: Load and destroy the scene before the loader has finished loading the sound assets and/or after loaded an audio sound but before decoding
  • What should happen: No error should be thrown
  • What happens instead: errors are thrown
  • If there's an error:
    • What's the error message? See the comment below
    • What's the error trace (expand the error message)? See the comment below

Hello there and thank you for maintaining this repo !

Several errors may occurs when destroying the game too early. These errors are all related to WebAudio.

Note that these errors occurred in a single page app where window.PhaserGlobal = {}; has been set as suggested in the doc.

1. Cannot set property 'onended' of null

Stacktrace:

phaser.js:59104 Uncaught TypeError: Cannot set property 'onended' of null
    at push../resources/assets/js/plugins/phaser.js?a3d3.Phaser.Sound._removeOnEndedHandler (phaser.js:59104)
    at push../resources/assets/js/plugins/phaser.js?a3d3.Phaser.Sound.onEndedHandler (phaser.js:58397)

Concerned line of code:

https://github.com/photonstorm/phaser-ce/blob/585160726bf3be112d7a37c8469171a3203e1ae5/src/sound/Sound.js#L1135-L1138

Comment:
I guess this._sound is null or undefined at this stage, when the whole game has been destroyed.

2. Cannot read property 'noAudio' of null

Stacktrace:

phaser.js:56719 Uncaught TypeError: Cannot read property 'noAudio' of null
    at push../resources/assets/js/plugins/phaser.js?a3d3.Phaser.Loader.getAudioURL (phaser.js:56719)
    at push../resources/assets/js/plugins/phaser.js?a3d3.Phaser.Loader.loadFile (phaser.js:56269)
    at push../resources/assets/js/plugins/phaser.js?a3d3.Phaser.Loader.processLoadQueue (phaser.js:56008)
    at push../resources/assets/js/plugins/phaser.js?a3d3.Phaser.Loader.asyncComplete (phaser.js:56110)
    at XMLHttpRequest.xhr.onload (phaser.js:56619)

Concerned line of code:
https://github.com/photonstorm/phaser-ce/blob/c7f5f4345530fea0ad5a2d578b1c7fc26513380a/src/loader/Loader.js#L1271-L1276

https://github.com/photonstorm/phaser-ce/blob/c7f5f4345530fea0ad5a2d578b1c7fc26513380a/src/loader/Loader.js#L2850-L2855

Comment:
We should check the existence of this.game and this.game.sound beforehand.

3. Cannot read property 'usingWebAudio' of null

This one is a warning, not an error so it's less important but still.

Stacktrace:

Cannot read property 'usingWebAudio' of null
asyncComplete | @ | phaser.js:56107

Concerned line of code:

https://github.com/photonstorm/phaser-ce/blob/c7f5f4345530fea0ad5a2d578b1c7fc26513380a/src/loader/Loader.js#L2407-L2410

https://github.com/photonstorm/phaser-ce/blob/c7f5f4345530fea0ad5a2d578b1c7fc26513380a/src/loader/Loader.js#L3051-L3061

Being catch and log as a warning here:
https://github.com/photonstorm/phaser-ce/blob/c7f5f4345530fea0ad5a2d578b1c7fc26513380a/src/loader/Loader.js#L2240

4. Cannot read property 'decodedSound' of null

Stacktrace:

Uncaught TypeError: Cannot read property 'decodedSound' of null
    at AudioContext.<anonymous> (phaser.js:59771)

Concerned line of code:
https://github.com/photonstorm/phaser-ce/blob/ccbe5d7277194a4607492928ff26997ebc34c9ed/src/sound/SoundManager.js#L527-L534

5. Cannot read property 'update' of null

Stacktrace:

phaser.js:14822 Uncaught TypeError: Cannot read property 'update' of null
    at push../resources/assets/js/plugins/phaser.js?a3d3.Phaser.Game.update (phaser.js:14822)
    at push../resources/assets/js/plugins/phaser.js?a3d3.Phaser.RequestAnimationFrame.updateRAF (phaser.js:43150)
    at _onLoop (phaser.js:43134)
    at __trace__ (bugsnag.js:2613)

Concerned line of code:
https://github.com/photonstorm/phaser-ce/blob/585160726bf3be112d7a37c8469171a3203e1ae5/src/core/Game.js#L982-L991

Comment:
I guess that one is not related to the use of WebAudio

Most of this should be solved by adding some conditional check I suppose.

Once again, thank you for maintaining this repo, have a good day. 👍