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Add a practical example for @GDScript.linear2db()

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One of its most common applications in games is for volume sliders.

See https://www.dr-lex.be/info-stuff/volumecontrols.html for
more information.

(cherry picked from commit a6fd6b78dd)
This commit is contained in:
Hugo Locurcio 2020-02-27 22:49:46 +01:00 committed by Rémi Verschelde
parent 21a45dda7a
commit d679edfa7f
1 changed files with 7 additions and 1 deletions
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8
modules/gdscript/doc_classes/@GDScript.xml
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@ -609,7 +609,13 @@
<argument index="0" name="nrg" type="float">
</argument>
<description>
Converts from linear energy to decibels (audio).
Converts from linear energy to decibels (audio). This can be used to implement volume sliders that behave as expected (since volume isn't linear). Example:
[codeblock]
# "Slider" refers to a node that inherits Range such as HSlider or VSlider.
# Its range must be configured to go from 0 to 1.
# Change the bus name if you'd like to change the volume of a specific bus only.
AudioServer.set_bus_volume_db(AudioServer.get_bus_index("Master"), linear2db($Slider.value))
[/codeblock]
</description>
</method>
<method name="load">