Re: [pygame] sprite engine

[Kamilche <klachemin@xxxxxxxxxxx>]

Geekius Maximus wrote:

> Cindy,
> I am currently working on a sprite rendering engine as well, and I 
really appreciate that you're passing these ideas around, they've
been really helpful. I have just one question for you, though. How
do you get the images to blit in a specific order? Do you have
one class containing all of the sprites, which blits only the
dirty sprites and those that are blitted on top of the dirty sprites?
> 		

The same method Droid uses - maintaining a list of sprites in back to 
front order on the screen. Whenever something is added, removed, or 
position changes, I resort the list.

I've done it both ways - a single parent containing multiple children, 
which can themselves contain children, all of which are drawn in order 
from the root child... and my old method where nothing was a 'child' of 
anything, it was almost all a single flat list. My latest work is using 
the parent/child relationship, which I like better... but the main gist 
of any method is, you must maintain a list somehow, somewhere, that the 
main render loop renders. And even in my current parent/child structure, 
I must keep the sort order correct - so I'm still maintaining the list 
Droid mentioned he uses, as well.

--Kamilche