Callback - Character Indicators [SOLVED]

[TellerFarsight]

Hey all!
I have a question about character callbacks that's really stumping me. I've seen them used pretty cleanly for beepy voices and lip flaps and all that, but I'm trying to use them for custom character indicators, kind of like CTC indicators. To do this, I need the character to be an argument in the callback function, but for some reason, it's not working.
The idea is that a talk indicator will appear above each character's head whenever they're talking, not in the textbox. Each character has a "current position" attribute, so I should be able to put the indicator at their current position. It appears when they begin talking and disappears when the interaction is over (I think I've done that part right?)

Untitled.png (9.79 KiB) Viewed 2395 times

The issue is getting the function to accept the character as an argument. If I put it at the end, like here, it returns the error "non-default argument follows default argument," which I don't fully understand.

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init -1 python:
    def talking_stick(event, interact=True, char):
        if not interact:
            return
        if event == "begin":
            renpy.show("talk_indic", at_list=[current_pos(char.xpos,char.ypos - 48*3,0.5)])
        elif event == "end":
            renpy.hide("talk_indic")
            
...
...
...

define a = Character("Aggy", image="aggy", callback=talking_stick(Aggy))

I tried rearranging the order of the arguments in the function like so:

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def talking_stick(char, event, interact=True):

but then it returns the error "talking_stick() takes at least 2 arguments (1 given)"

So I'm not really sure what to do. Any ideas?

[kivik]

Ooh, I had this problem before and this thread has the solution!

viewtopic.php?f=8&t=48870#p482245

Something like this:

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        from functools import partial # import the python function
        def talking_stick(char, event_name, *args, **kwargs):
                # your code here
    define a = Character("Aggy", image="aggy", callback=partial(talking_stick,"Aggy"))

[TellerFarsight]

Works like a charm! It's literally perfect.

Code: Select all

init -1 python:
    from functools import partial
    def talking_stick(char, event_name, interact=True, **kwargs):
        if not interact:
            return
        if event_name == "begin":
            renpy.show("talk_indic", at_list=[current_pos(char.xpos,char.ypos - 48*3,0.5)])
        elif event_name == "end":
            renpy.hide("talk_indic")
            
...
...
...

define a = Character("Aggy", image="aggy", callback=partial(talking_stick,Aggy))

but if anyone has a solution that doesn't require importing partial, toss it on in because it might be more efficient.

[philat]

The latest (March 2018) patreon article (viewtopic.php?f=51&t=47328 ) could be adapted for this. You can also use renpy.curry instead of partial, although I don't know whether that would make any difference for performance.

[trooper6]

Also just for the record, you don't need renpy.curry or partial. You can pass keyword arguments to the callback using the cb_ prefix.
So you could do:

Code: Select all

define a = Character("Aggy", image="aggy", callback=talking_stick, cb_char=Aggy)