Press 0 : turn on/off white light
press 1 : turn on/off blue light
press 2 : turn on both light
press 'c': move to center of the room
press '9': move to orgin origin
press 'a' : turn the point of view to the left side
press 'd' : turn the point of view to the right side
press 'j' : turn the point of view to the up side
press 'n' : turn the point of view to the down side
