Ren'Py Change class variables for the music room (Toggle button)

[Playstorepers]

Hey everyone,

Let's say I created a music room and I want to add the play on repeat and shuffle function with toggle buttons.

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How would one do that?
From my understanding the musicroom class (in my case, the music room is called mr), has two variables (single_track and shuffle), that I want to change with a toggle button.
So my first impulse was this:

frame:
        xalign 0.5
        yalign 0.5
        textbutton "Listen on repeat" action If (mr.single_track == False; mr.single_track = True; mr.single_track == False)

However, the mr.single_track doesn't work, which means, that class variables have to be changed differently is that correct?
Does anyone have a working toggle button for their music room and is willing to share their code with me?

Thanks in advance.

EDIT: I'm a useless piece of shit. Right beneath the documentation is a section that mentions two functions:
ToggleSingleTrack(self)

ToggleShuffle(self)

EDIT 2:
Still... Does anyone know why this:
textbutton "Listen on repeat" action If (mr.single_track == False; mr.single_track = True; mr.single_track = False)
doesn't work?
How do I change class variables correctly?

 

[anne O'nymous]

Still... Does anyone know why this:
textbutton "Listen on repeat" action If (mr.single_track == False; mr.single_track = True; mr.single_track = False)
doesn't work?

Replace the ; by the expected ,.

 

[Playstorepers]

thank you.


that was my first mistake my second one was == instead of = for the false portion.
However it still doesn't work, most likely because textbuttons can't change variables directly, right?
So I tried:

textbutton "Listen on repeat" action If (mr.single_track == False, SetVariable(mr.single_track,True), SetVariable(mr.single_track,False))
and it still doesn't work.

action mr.ToggleSingleTrack() works like a charm, though, yet still I'm curious, how exactly I change class variables.

 

[Rich]

textbutton "Listen on repeat" action If (mr.single_track == False, SetVariable(mr.single_track,True), SetVariable(mr.single_track,False))
and it still doesn't work.

You want SetField not SetVariable

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textbutton "Listen on repeat" action If (mr.single_track == False, SetField(mr, "single_track" ,True), SetField(mr, "single_track", False))

Or, more easily

textbutton "Listen on repeat" action ToggleField(mr, "single_track")

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[Playstorepers]

Thank you two very much for your answers.
At least now I get, what to do, if I come across a similar problem.