[Tutor] Moveable and Animated Sprites

[Jordan]

Is there a more Pythonic way to create the class
"MoveableAnimatedSheetSprite" I am using multiple inheritance but I see
that I am really loading the image twice when I call __init__ for
"AnimatedSheetSprite" and "MoveableSprite". Should I just make a
moveable class and have moveable items inherit it with out inheriting
from "Sprite"?
By the way the code does work as intended right now.
Thank you in advance, if you need more code or what ever just let me know.

import pygame
from vec2d import *
class Sprite(pygame.sprite.Sprite):
    """This defines a sprite that is a single image in a file that only
contains
    it as an image."""
    def __init__(self, imageName, startx=0, starty=0):
        pygame.sprite.Sprite.__init__(self)
        self.image=pygame.image.load(imageName)
        self.rect=self.image.get_rect()
        self.image.convert()
        self.x=startx
        self.y=starty
        self.position=vec2d(self.x,self.y)
        self.selected=False  

    def update(self):
        pygame.sprite.Sprite.update(self)

class AnimatedSheetSprite(Sprite):
    """This defines a sprite that is multiple images but is in a image
file that
    has only it's images."""
    def __init__(self, imageName, startx=0, starty=0, height=0, width=0):
        Sprite.__init__(self, imageName, startx, starty)
        self.images=[]
        masterWidth, masterHeight=self.image.get_size()
        for i in xrange(int(masterWidth/width)):
           
self.images.append(self.image.subsurface((i*width,0,width,height)))
        self.image=self.images[0]
        self.maxFrame=len(self.images)-1
        self.frame=0

    def animate(self):
        if self.frame < self.maxFrame:
            self.frame=self.frame+1         
        else:
            self.frame=0
        self.image=self.images[self.frame]
       
    def update(self):
        Sprite.update(self)
        self.animate()

class MoveableSprite(Sprite):
    """This defines a sprite that is a single image in a file that only
contains
    it as an image. But this sprite can move."""
    def __init__(self, imageName, startx=0, starty=0, targetx=0,
targety=0, speed=2):
        Sprite.__init__(self, imageName, startx, starty)
        self.target=vec2d(targetx,targety)
        self.speed=speed

    def move(self):
        self.direction=self.target-self.position
        if self.direction.length > self.speed:
            self.position= self.position+self.speed
       
    def update(self):
        Sprite.update(self)
        self.move()
           
class MoveableAnimatedSheetSprite(MoveableSprite, AnimatedSheetSprite):
    """This defines a sprite that is multiple images but is in a image
file that
    has only it's images. But this sprite can move."""
    def __init__(self, imageName, startx=0, starty=0,targetx=0,
targety=0, speed=2,
        height=0, width=0):
        MoveableSprite.__init__(self, imageName, startx, starty,
targetx, targety, speed)
        AnimatedSheetSprite.__init__(self, imageName, startx, starty,
height, width)

    def update(self):
        MoveableSprite.update(self)
        AnimatedSheetSprite.update(self)


--
Jordan Farrell