Ren'Py: Blur scene behind choice menu, fade choices in and out.

renpy_screen_choice.md

How to apply transitions to the current scene behind a Ren'Py choice menu

Here is example code to apply the blur transform to the master layer when a choice menu is displayed, along with applying a fade-in and fade-out effect of the choice items.

This was tested on Ren'Py 7.4.0.1167.

screen_choice.rpy

screen choice(items):
    style_prefix "choice"

    $ renpy.show_layer_at(choice_bg_transform_show, layer='master')
    on "hide" action Function(renpy.show_layer_at, choice_bg_transform_hide, layer='master')

    vbox at choice_transform:
        for i in items:
            textbutton i.caption action i.action

transform choice_bg_transform_show:
    blur 20.0

transform choice_bg_transform_hide:
    blur 0.0

transform choice_transform:
    alpha 0.0
    easein 1.0 alpha 1.0

    on hide:
        easein 1.0 alpha 0.0

I tried this code
[code]
I'm sorry, but errors were detected in your script. Please correct the
errors listed below, and try again.

File "game/screens.rpy", line 221: u'choice_bg_transform_show' is not a keyword argument or valid child for the transform statement.
transform choice_bg_transform_show:
^

Ren'Py Version: Ren'Py 7.3.5.606
Sun Feb 14 10:42:10 2021
[/code]

Any Idea why I am getting this error?

Any Idea why I am getting this error?

@SlayerA259, could be a number of things - not really possible to say without seeing your actual code. Could also be that this requires Ren'Py 7.4, and you're still on 7.3.

@dossy Is there anything else to change except in screen.rpy

@SlayerA259 No, only screen.rpy.