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Re: [pygame] Newbie - trouble with inheritance in pygame

Psymaster wrote:

Sorry if it's been asked before, but why this doesn't work:

class my_font(pygame.font.Font):
    pass

while this does:

class my_sprite(pygame.sprite.Sprite):
    pass

the first gives a TypeError
the problem is Font is a C extension type, which by default aren't inheritable from. this isn't too hard to update, but for now i still want to maintain compatability with old python releases.

this just means there's a bunch of #if blocks all over getting functions and structures all in the right place. i did this for Rect and Surface because i figured it would be the most useful. it was a bit of a pain so i figured i'd wait and see how that went.

there are still a few types in pygame that cannot be subclassed, Font is surely one of them others are the different devices like Joystick and CD. probably the only ones that could be candidates for subclassing might be Font and Sound.

of course, now that i know what to do, it's not too rough to update these classes. if i have time next week i'll slip this in for the next pygame release :]