basic spritesheet class

spritesheet.py

class Spritesheet:
    # utility class for loading and cutting spritesheets
    def __init__(self, filename):
        self.spritesheet = pg.image.load(filename).convert_alpha()

    def get_image_by_rect(self, x, y, w, h):
        r = pg.Rect(x, y, w, h)
        return self.spritesheet.subsurface(r)