---

def on_key_down(key):
    if key == keys.RIGHT:
        char.x += cell.width
        char.image = 'stand'
    elif key == keys.LEFT:
        char.x -= cell.width
        char.image = 'left'
    elif key == keys.DOWN:
        char.y += cell.height
    elif key == keys.UP:
        char.y -= cell.height