Audio is stopped when changing the properties of AudioStream

[vetu11]

Godot version:

3.2.3.stable

OS/device including version:

Manjaro Linux, 5.8.11-1-MANJARO

Issue description:

If an AudioStreamPlayer is playing and you change any of the properties of the stream the audio stops.

Steps to reproduce:

• Add an AudioStreamPlayer with any sound.
• Change any of the properties of the AudioStream.
• The audio stops.

Minimal reproduction project:

AudioStreamPropertiesStopsAudio.zip

[kyleguarco]

I can't trigger the bug. What property did you change, exactly? What were you doing when changing the properties?

Running Debian Sid, kernel 5.8.0.

Yeah, ran the project and can confirm it.

[DavidSichma]

Can reproduce on master but not really audio bug, GDScript quirk. (see #41319 or one of the many other instances)

This line
$AudioStreamPlayer.stream.loop = false
gets interpreted as

1. change loop property of stream
2. because stream is now changed, change the stream property of the stream player
   changing streams stops the the stream as one might put some completely new stream in there.

Current work arounds

• call setter at the end
• get stream by getter
• put stream in a var first

[vetu11]

I can't trigger the bug. What property did you change, exactly? What were you doing when changing the properties?

Running Debian Sid, kernel 5.8.0.

Check the Minimal Reproduction Project. It has a timer that changes the loop property after the sound started

[dalexeev]

I tested, it's really a GDScript bug. This has been fixed in 4.0, probably by #72398.

In 3.5 the bug is still reproducible (I haven't tested in 3.x), the workarounds mentioned by DavidSichma work:

# The bug. It works in 4.0 RC 2.
$AudioStreamPlayer.stream.loop = false

# OK.
$AudioStreamPlayer.get_stream().loop = false

# OK.
$AudioStreamPlayer.stream.set_loop(false)

# OK.
var stream = $AudioStreamPlayer.stream
stream.loop = false

Please add GDScript label and 3.x milestone.