def update(self):
# The surface needs to be ready-to-draw after update is called
# Returns true if surface has been modified.
modified = self.update_children()
self_changed = False
if modified or self_changed:
self.surface.fill(graphics.random_color())
for child in self.children:
child.draw_to(self.surface)
return modified
def random_outline(self):
pygame.draw.rect(
self.surface, graphics.random_color(), self.surface.get_rect(), 2)
