Now I ve done the final project in a way that's possibly gonna cause some bug. For instance, the collision is done on both side of the machine. During the course, Professor keenan said that we should do the collision on just on side. I am not saying that there is not way to do that on just one machine, I will figure out a way to do that. like while sending a packet, send out the time also. and use that time to decide if the bullet or the asteroid is colliding.