We can simulate things like astrophysics, relativity, and lots of other insane stuff we are able to observe in among the wonders of nature. It is also an essential tool in civil and automotive engineering, illuminating how certain structures would behave in events like an earthquake or a car crash. The earliest computers were already being used to perform physics simulations – for example, to predict the ballistic motion of projectiles in the military. The range of applications of physics simulations is enormous. This allows us, as advanced game developers, to predict and carefully analyze how something would behave before actually building it, which is almost always simpler and cheaper to do. In general, these simulations apply numerical methods to existing theories to obtain results that are as close as possible to what we observe in the real world. Physics simulation is a field within computer science that aims to reproduce physical phenomena using a computer. Part III: Constrained Rigid Body Simulation Part II: Collision Detection for Solid Objects This is Part I of our three-part series on video game physics.
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