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# This class handles sprite sheets
# This was taken from
# sprite-sheets-and-drawing-the-background
# I've added some code to fail if the file wasn't found..
# Note: When calling images_at the rect is the format:
# (x, y, x + offset, y + offset)
import pygame
class Spritesheet(object):
def __init__(self, filename):
self.sheet = pygame.image.load(filename).convert()
except pygame.error, message:
print 'Unable to load spritesheet image:', filename
raise SystemExit, message
# Load a specific image from a specific rectangle
def image_at(self, rectangle, colorkey = None):
"Loads image from x,y,x+offset,y+offset"
rect = pygame.Rect(rectangle)
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, pygame.RLEACCEL)
return image
# Load a whole bunch of images and return them as a list
def images_at(self, rects, colorkey = None):
"Loads multiple images, supply a list of coordinates"
return [self.image_at(rect, colorkey) for rect in rects]
# Load a whole strip of images
def load_strip(self, rect, image_count, colorkey = None):
"Loads a strip of images and returns them as a list"
tups = [(rect[0]+rect[2]*x, rect[1], rect[2], rect[3])
for x in range(image_count)]
return self.images_at(tups, colorkey)