Dialogue callbacks

[kivik]

Is there a way I can hook to the dialogue messages (the what) anytime a line of dialogue is spoken by any character?

I tried editing the say screen and get it to process the what value and show another screen with data in it, not realising that the screen seems to get triggered on redraw (I assume) so it's called numerous times and only 1 out of 4 times would it have the dialogue content, rendering my attempt a failure.

I basically want a way of running a regex through every dialogue, picking out specific words when available, and getting them to show up on a separate screen. I've got the regex part down, it's literally just processing the dialogues when they occur that I can't figure out.

I don't know if Character callbacks can be an option, since I don't know how to grab the dialogue on the callback.

Many thanks for help in advance!

[gas]

Wild guess, but probably the start interaction callback is something to try.
You don't have to check when text is rendered, but when the interaction is back to users after rendering.

[Ocelot]

You can extend an ADVCharacter class to do whatever you want when it is called and then defer to parent class behavior, then define all characters to be your new type.

[kivik]

Thanks guys, I've been having a look at the config callbacks, but I'm stumped as to how to work with them.

What I want to accomplish is being able to call a function for every dialogue, and be able to use the what value / the text in the dialogue and process it, before showing a new screen if there are valid outputs.

Looking at the callbacks they either say list functions without parameters, or in the case of config.say_arguments_callback mentions returning a pair of values.

Just to clarify I'm not actually that familiar with this level of Renpy, I've seen character callbacks being mentioned before but I could barely understand them, so this is a little beyond me, so I may need some example code if possible .__.U

Sorry and thanks for your help!