docs: def draw(self):
          """Draw all the sprites in the system using their renderers.
  
          This method is convenient to call from you Pyglet window's
          on_draw handler to redraw particles when needed.
          """
          glPushAttrib(GL_ALL_ATTRIB_BITS)
          self.draw_score()
          for sprite in self:
              sprite.draw()
          glPopAttrib()