Rename angle_get_subimg to angle_get_portion

[Manukineko]

Hello,
Just a random reflexion.
I think the angle_get_subimg function's name is quite specific. The function doesn't refer to anything sprite or image related stuff in itself.
It returns the portion's index of a "pie" that contains the input angle, right ?
I could use that to get the index of a circular area around an object, with the mouse cursor, for example XD

[FoxyOfJungle]

Hello Manukineko,

Oh, now that you mention it, you're absolutely right! I had given it the "subimg" suffix because I initially used it to point the sprite's direction based on the angle haha ​​(like in the Club Penguin game). I'll consider changing it.

Thanks! ^^