In order to represent real-life behaviors in our games, we must simulate the effects of the laws of 3D physics in our 3D scenes. A UFO flying near the Earth will be attracted by gravitational force. Real things move and spin responding to forces, impulses, and torques. Therefore, we have to add physics simulation capabilities to our models' animations. We have to create a 3D world capable of reproducing some realistic behaviors.
Reading this chapter and following the exercises we shall learn how to: