Mouse input

            if event.type == pygame.MOUSEBUTTONDOWN:
                if event.button == 1: # left click 
                    print("Left Click")
                elif event.button == 3: # right click shrinks radius 
                    print("Right Click")
            
            if event.type == pygame.MOUSEMOTION:
                # if mouse moved, get the position 
                print(event.pos)