...player.movepos = [0,0]
player.state = "still"
Here assume that you've already created an instance of a bat, and called the object player...

...position = position.move(2, 0) #move player
... screen.blit(player, position) #draw new player
... pygame.display.update() #and show it all
... clock.tick(60...

...A game could use some groups to control object rendering, and a completely separate set of groups to control interaction or player movement. Instead...

...If this new position crosses outside the display
area of the screen, it reverses the movement offset. It also mirrors the
image using the...