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Document AudioServer.playback_speed_scale in Engine.time_scale #86071

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Dec 13, 2023
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Document AudioServer.playback_speed_scale in Engine.time_scale #86071

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2 changes: 1 addition & 1 deletion doc/classes/AudioServer.xml
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Expand Up @@ -311,7 +311,7 @@
Name of the current device for audio output (see [method get_output_device_list]). On systems with multiple audio outputs (such as analog, USB and HDMI audio), this can be used to select the audio output device. The value [code]"Default"[/code] will play audio on the system-wide default audio output. If an invalid device name is set, the value will be reverted back to [code]"Default"[/code].
</member>
<member name="playback_speed_scale" type="float" setter="set_playback_speed_scale" getter="get_playback_speed_scale" default="1.0">
Scales the rate at which audio is played (i.e. setting it to [code]0.5[/code] will make the audio be played at half its speed).
Scales the rate at which audio is played (i.e. setting it to [code]0.5[/code] will make the audio be played at half its speed). See also [member Engine.time_scale] to affect the general simulation speed, which is independent from [member AudioServer.playback_speed_scale].
</member>
</members>
<signals>
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2 changes: 2 additions & 0 deletions doc/classes/Engine.xml
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Expand Up @@ -307,6 +307,8 @@
</member>
<member name="time_scale" type="float" setter="set_time_scale" getter="get_time_scale" default="1.0">
Controls how fast or slow the in-game clock ticks versus the real life one. It defaults to 1.0. A value of 2.0 means the game moves twice as fast as real life, whilst a value of 0.5 means the game moves at half the regular speed. This also affects [Timer] and [SceneTreeTimer] (see [method SceneTree.create_timer] for how to control this).
[b]Note:[/b] This does not affect audio playback speed. Use [member AudioServer.playback_speed_scale] to adjust audio playback speed independently of [member Engine.time_scale].
[b]Note:[/b] This does not automatically adjust [member physics_ticks_per_second], which means that with time scales above 1.0, physics simulation may become less precise (as each physics tick will stretch over a larger period of engine time). If you're using [member Engine.time_scale] to speed up simulation by a large factor, consider increasing [member physics_ticks_per_second] as well to improve physics reliability.
</member>
</members>
</class>
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