MakeTextures ( self )

For all of the sprites in this group we will make textures for them.

draw ( self,  surface )

supposed to draw to the given surface. Problem is it is an opengl screen. so we get the size of it, and draw to the screen.

draw_gl ( self,  spr )

Assumes glMatrixMode( GL_MODELVIEW )

set_up_2d_projection ( self,  a_rect )

a_rect - the area to set up the projection for.

setup_draw_texture ( self,  screen_rect )

Sets up opengl for drawing the textures.

un_setup_draw_texture ( self )

resets the opengl state to what it was before drawing.