Please forgive me if this is totally incorrect, I haven't worked with
Sprites yet.
Looking at your code, you have a Sprite class called Gene.
You then instantiated a sprite.Group instance and called it "genesprite".
But this group doesn't actually have any sprites in it yet!
You only have one instantiated sprite, so throw it in your group after you
created it like so:
genesprite = pygame.sprite.RenderUpdates()
genesprite.add(gene)
I hope that works, good luck!
-Sean
On Sat, Feb 23, 2008 at 3:18 PM, Devon Scott-Tunkin <[EMAIL PROTECTED]>
wrote:
> Hi I've just started using pygame and python in general as of a week ago
> and I'm probably trying to get up the mountain too soon. In the following
> program I've frankensteined in order to simply repeat a 4 frame walk cycle
> animation, I can't get the sprite to display, all I see is black. If anyone
> can point me to what I'm doing wrong I'd appreciate it.
>
> Thanks,
>
> Devon
>
> import os, pygame
> from pygame.locals import *
>
> SCREENRECT = Rect(0, 0, 320, 240)
>
> class Spritesheet:
> def __init__(self, filename):
> self.sheet = pygame.image.load(os.path.join('data',
> filename)).convert()
> def imgat(self, rect, colorkey = None):
> rect = Rect(rect)
> image = pygame.Surface(rect.size).convert()
> image.blit(self.sheet, (0, 0), rect)
> if colorkey is not None:
> if colorkey is -1:
> colorkey = image.get_at((0, 0))
> image.set_colorkey(colorkey, RLEACCEL)
> return image
> #def imgsat(self, rects, colorkey = None):
> # imgs = []
> # for rect in rects:
> # imgs.append(self.imgat(rect, colorkey))
> # return imgs
>
> def geneimages():
> spritesheet = Spritesheet('sprite_gene.png')
> return [spritesheet.imgat((0, 0, 16, 32), -1),
> spritesheet.imgat((17, 0, 16, 32), -1),
> spritesheet.imgat((33, 0, 16, 32), -1),
> spritesheet.imgat((49, 0, 16, 32), -1)]
>
> class Gene(pygame.sprite.Sprite):
> def __init__(self, fps = 10):
> pygame.sprite.Sprite.__init__(self)
> # Track the time we started, and the time between updates.
> # Then we can figure out when we have to switch the image.
> self._frame = 0
> self.image = self._images[self._frame]
> self.rect = self.image.get_rect()
> self._start = pygame.time.get_ticks()
> self._delay = 1000 / fps
> self._last_update = 0
>
> # Call update to set our first image.
> self.update(pygame.time.get_ticks())
>
> def update(self, t):
> # Note that this doesn't work if it's been more that self._delay
> # time between calls to update(); we only update the image once
> # then, but it really should be updated twice.
>
> if t - self._last_update > self._delay:
> self._frame += 1
> if self._frame >= len(self._images): self._frame = 0
> self.image = self._images[self._frame]
> self._last_update = t
>
> def main():
> pygame.init()
> screen = pygame.display.set_mode(SCREENRECT.size)
> Gene._images = geneimages()
> gene = Gene()
>
>
> genesprite = pygame.sprite.RenderUpdates()
>
> # Set-up background surface
> global background
> background = pygame.Surface(screen.get_size())
> background = background.convert()
>
> # keep track of time
> clock = pygame.time.Clock()
>
> # Blit everything to the screen
> screen.blit(background, (0, 0))
> pygame.display.flip()
>
> # game loop
> while 1:
> # maintain frame rate
> clock.tick(30)
>
> # get input
> for event in pygame.event.get():
> if event.type == QUIT \
> or (event.type == KEYDOWN and \
> event.key == K_ESCAPE):
> return
>
> # clear sprites
> genesprite.clear(screen, background)
>
> # update sprites
> genesprite.update(4)
>
> # redraw sprites
> genesprite.draw(screen)
> pygame.display.flip()
>
>
>
> if __name__ == '__main__': main()
>
> ------------------------------
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