How to change scenes through Variables and Screens?

[Tritonials]

Hello, I need to change the background using screens and variables.

Code: Select all

screen jx:
    add "images/date.png" xalign 0.5 yalign 0.0
    if sun == True:
        $ classroom2 = 'images/classroomday.jpg'
        add 'images/sun_icon.jpg' xalign 1.0 yalign 0.0
    else:
        $ classroom2 = 'images/clasroomnight.jpg'
        add 'images/moon_icon.jpg' xalign 1.0 yalign 0.0

    text "Monday" xalign 0.5 ypos 20

$ sun = True
$ classroom2 = 'images/classroomday.jpg'
image classroom = '[classroom2]'

label start:
    show screen jx
    scene classroom2
    e "bla bla bla"
    e "bla bla bla"
    $ sun = False # background is now supposed to turn to night, but it doesn't.
    e "It's nighttime."

return

So what I was trying to say was I need the background to also change to night when I set the variable "sun" to False and
that activates the background and my sun icon to change. However, The background doesn't change but the sun icon does. I tried everything I learned from Ren'Py and python and honestly this is my last choice so please any help would be kindly appreciated.

[Per K Grok]

Hello, I need to change the background using screens and variables.

Code: Select all

screen jx:
    add "images/date.png" xalign 0.5 yalign 0.0
    if sun == True:
        $ classroom2 = 'images/classroomday.jpg'
        add 'images/sun_icon.jpg' xalign 1.0 yalign 0.0
    else:
        $ classroom2 = 'images/clasroomnight.jpg'
        add 'images/moon_icon.jpg' xalign 1.0 yalign 0.0

    text "Monday" xalign 0.5 ypos 20

$ sun = True
$ classroom2 = 'images/classroomday.jpg'
image classroom = '[classroom2]'

label start:
    show screen jx
    scene classroom2
    e "bla bla bla"
    e "bla bla bla"
    $ sun = False # background is now supposed to turn to night, but it doesn't.
    e "It's nighttime."

return

So what I was trying to say was I need the background to also change to night when I set the variable "sun" to False and
that activates the background and my sun icon to change. However, The background doesn't change but the sun icon does. I tried everything I learned from Ren'Py and python and honestly this is my last choice so please any help would be kindly appreciated.

Try this

Code: Select all

screen jx:
    add "images/date.png" xalign 0.5 yalign 0.0
    if sun == True:
        add 'images/sun_icon.jpg' xalign 1.0 yalign 0.0
    else:
        add 'images/moon_icon.jpg' xalign 1.0 yalign 0.0

    text "Monday" xalign 0.5 ypos 20

default sun = True
image classroom2 = 'images/classroomday.jpg'
image classroom = 'images/clasroomnight.jpg'

label start:
    show screen jx
    scene classroom2
    e "bla bla bla"
    e "bla bla bla2"
    $ sun = False 
    scene classroom
    e "It's nighttime."

return

[IrinaLazareva]

Code: Select all

default  sun = True

layeredimage classroom:
    if sun:
        'classroomday.jpg'
    else:
        'clasroomnight.jpg'
        
screen jx:
    add "date.png" xalign 0.5 yalign 0.0
    if sun:
        add 'sun_icon.jpg' xalign 1.0 yalign 0.0
    else:
        add 'moon_icon.jpg' xalign 1.0 yalign 0.0
    text "Monday" xalign 0.5 ypos 20

label start:
    show screen jx
    scene classroom
    e "bla bla bla"
    e "bla bla bla"
    $ sun = False # background is now supposed to turn to night.
    e "It's nighttime."
    return

https://renpy.org/doc/html/layeredimage ... red-images
https://renpy.org/doc/html/layeredimage.html#if

[Remix]

In my experience, the easiest approach is to use a string value in your variable and interpolate it in the image (thus automatically making it dynamic)

Code: Select all

default time_of_day = "day" # or "night" or whatever

image classroom = "images/clasroom[time_of_day].jpg"
image sun_moon_icon = "images/[time_of_day]_icon.jpg"

label start:

    scene classroom

    "..."

    $ time_of_day = "night"

    "..."

[Crazy Li]

I also do what Remix said as much as possible, making my variable values match something in my file names. Fitted specifically to the OP example, I think it would be fashioned something like...

Code: Select all

screen jx:
    add "images/date.png" xalign 0.5 yalign 0.0
    add "images/[time]_icon.jpg" xalign 1.0 yalign 0.0 # you will need your icons to be day_icon.jpg and night_icon.jpg instead for this to work
    text "Monday" xalign 0.5 ypos 20

$ time = "day"
image classroom = "images/classroom[time].jpg"

label start:
    show screen jx
    scene classroom
    e "bla bla bla"
    e "bla bla bla"
    $ time = "night"
    e "It's nighttime."

return