Re: [pygame] Animating sprites

[Chris Smith <maximinus@xxxxxxxxx>]

It is highly likely that this animation will have to happen during
some number-crunching C code called from python. I can't really afford
the overhead to check back with python to see if the sprites need
updatiing.

What I need is either a regular timed interrupt, or a way for pygame
to do it for me.

On 5/7/05, andrew baker <failrate@xxxxxxxxx> wrote:
> Well, that sprite should belong to a group, so you have your animation
> code in its update method.  I prefer a list of images, ImageList, from
> which you can create loops with tuples (for example, go_up =
> (1,2,3,4), go_down = (5,6,7,8), etc.).  Then, depending on its state,
> current_loop = whatever loop you need.
> 
> Then, in your update method, you just check how long it's been since
> your last frame, and if it's time to update frames, then:
> 
> if self.frame_count >= len(self.current_loop):
>     self.frame_count = 0
> else:
>     self.frame_count++
> 
> when displayed, the Sprite should display the image:
> 
> self.ImageList[self.current_loop[self.frame_count]]
> 
> That should do it, nicely :D
> 
> 
> On 5/7/05, Chris Smith <maximinus@xxxxxxxxx> wrote:
> > What's the best way to animate a sprite in the background? I am
> > writing a turn based strategy game (http://www.spqr-game.co.uk/),
> > which I've written a gui for. I need to animate a sprite in the
> > background (actually mainly flashing on and off, or, if python is fast
> > enough, fade it in and out). No mention of this sort of stuff in the
> > sprite module and I'd rather avoid using threads if possible :-)  Any
> > ideas?
> >
> > - Chris
> >
> > --
> > Science is open source religion
> >
> 
> --
> Andrew Ulysses Baker
> "failrate"
> 


-- 
Science is open source religion