Re: [pygame] OSX sprite flickering

[Daniel Mateos <daniel@xxxxxxxxx>]

Oh i also noticed sometimes they appear to half render as they move  
along and other weird artifacts like that, is it possibly because i  
call the update twice like this:

    #Update the moving sprites.
    if not tick % npc.UPDATERATE:
        people.update()
        reclist = people.draw(screen)
        pygame.display.update(reclist)
        people.clear(screen, clear_cb)

    if not tick % bullet.UPDATERATE:
        bullets.update()
        reclist = bullets.draw(screen)
        pygame.display.update(reclist)
        bullets.clear(screen, clear_cb)

I couldn't find a good way to efficiently combine the reclists and  
have it update them at the same time as i cant guarantee they will  
both exists that iteration so you cant do List + None.


On 20/01/2009, at 8:06 PM, Daniel Mateos wrote:

> Nah that test seems to run fine but its not running fast enough to  
> trigger it possibly, also it is only the Objects that inherit  
> DirtySprite that flicker.
>
> On 20/01/2009, at 7:39 PM, René Dudfield wrote:
>
> > hi,
> >
> > does examples/test_sprite.py flicker as well?
> >
> > It might be a double buffer Vs singler buffer issue... or maybe an
> > error in your code, or a bug in the sprite code.
> >
> > Checking the example will eliminate some of those possibilities.
> >
> > cheers,
> >
> > On Tue, Jan 20, 2009 at 6:27 PM, Daniel Mateos <daniel@xxxxxxxxx>  
> > wrote:
> > > Hey all, im getting this weird issue where my sprites flicker in  
> > > OSX,
> > > especially when i add a bunch of new sprites and do some updates  
> > > to the
> > > display.
> > >
> > > Code at http://github.com/dmateos/pybang/tree/master will  
> > > duplicate the
> > > issue, i have tested it on Linux/Windows and it works fine.
> > >
> > >
> > > Daniel Mateos
> > > daniel@xxxxxxxxx
>
> Daniel Mateos
> daniel@xxxxxxxxx

Daniel Mateos
daniel@xxxxxxxxx