You have the right idea.

You save all of the walking frames onto a single image. Ie: 32x32 pixel
frames, with 4 frames would be 128x32.

Then when you draw your sprite, you use a source Rect() to blit one frame.

# pseudo-code
def draw():
   w,h = 32, 32
   # give example values for current frame, and player loc.
   frame = 2 # for 4 frames, it will be 0 to 3
   x,y = (50,50)

   dest = Rect(x,y,w,h)
   source = Rect( frame*32, 0, w, h )

   screen.blit( sprite, dest, source )

You can use subsurf [
http://www.pygame.org/docs/ref/surface.html#Surface.subsurface ] But I found
it easier to set source_rect with tilesets.
--

Jake

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