spritesheet.py

import pygame

class spritesheet(object):
    def __init__(self, filename):
        try:
            self.sheet = pygame.image.load(filename).convert()
        except pygame.error :
            print ('Unable to load spritesheet image:', filename)
            #raise SystemExit(message)

    # Recupere une image grace a un Rect
    def image_at(self, rectangle, colorkey = None):
        # Recupere toute l'image
        rect = pygame.Rect(rectangle)
        image = pygame.Surface(rect.size).convert()
        # Recupere l'image en particulier & applique la colorkey
        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, pygame.RLEACCEL)
        return image

    # Recupere plusieurs images grace a des Rects
    def images_at(self, rects, colorkey = None):
        return [self.image_at(rect, colorkey) for rect in rects]

    # Charge une bande d'image,
    def load_strip(self, rect, image_count, colorkey = None):
        # Recupere les Rects des images pour les passer dans images_at
        tups = [(rect[0]+rect[2]*x, rect[1], rect[2], rect[3]) for x in range(image_count)]
        return self.images_at(tups, colorkey)