How to Get Mouse Position?

[franny]

(Sorry for messy English)
I'm planning to create an android app with dialogue and minigames. The minigames would be pretty basic, just swiping things and drag and drop stuff. I can't figure out how to get the mouse position, though, or where/how to put the game loop for the minigames. I did some searching and it has something to do with user-defined displayables, but I don't understand the explanations well.

Can someone give me a dummies explanation on user-defined displayables and point me in the right direction?
How can I do this?

(extra: I read that Ren'Py has gesture controls, I wonder if having minigames with a swipe mechanic is a bad idea?)

[xela]

Look for it in the docs. renpy.get_mouse_pos or pygame's direct call will return the right values.

No idea about gesture controls but if it's true that they're working, why not try them, if only to test the system?

[synedraacus]

The easiest approach for your creator-defined displayables will be probably like this: put all the drawing into render (and make sure all objects on screen know their position, probably by wrapping them in transforms). Then put all the gameplay logic into event() method, which gets called with event type and coordinates (ie left mousebutton got released at x, y) and update objects every time the event occurs. Something like "If ev.type=TYPE_1: do this elif ev.type=TYPE_2 and within(x, y, block.coords) do that". I also found it convenient to put some part of logic (processing opponent move in my case) into per_interact method which gets called every time the new interaction starts.
This will be enough for a turn-based game. If you want real-time, I'm pretty sure you can emit some kind of events every so often to simulate a proper game cycle, although I don't know exactly how to do that.
Although renpy in general is not that great for creating complex touchscreen interfaces with gestures, real-time gameplay and so on. If you do not really need the visual novel logics, you may want to have a look at eg. Kivy, which is a bit lower-level than renpy and gives you more control over what your displayables (called vidgets there) do and when. No point using it if you do need VN logic, though, that would be a lot more pain to implement than dealing with quirks of renpy CDDs.