[pygame] Re: fundamental (stupid) question about blitting part of a background image

["Horst F. JENS" <horst.jens@xxxxxx>]

Hi Brian,
thank you for the fast answer.
I will look up 'dirty rectangles' and medidate some time over your code.
From the first glance, it remind me a lot of the sprites methods.
What does the source, dest in the 'blit' function mean ?
Source and Dest are coordinates or Rectangles ?
bye,
	/Horst


 class DirtyRectScreen:
    def __init__(self, screen):
         self.rect_list = ()
         self.screen = screen

    def blit(self, source, dest):
         self.rect_list.append(self.screen.blit(source, dest))

    def erase(self, background_image):
         for rect in self.rect_list:
              self.screen.blit(background_image, (0,0), rect)
         self.rect_list = ()

     def update(self):
          self.screen.update(self.rect_list)