Game Physics Engine Development, 2nd Edition

20.3 Summary 489

20.3 Summary

The purpose of this whirlwind tour of other approaches is to give you a basic vocabu-

lary and understanding. When looking through the bewildering array of physics and

simulation resources available on the Internet, you can, I hope, understand how they

fit into the whole picture and how our engine relates to them.

There are a couple of open-source physics sys tems online that you can compare

with the one we’ve built. ODE, in particular, is widely used in hobby projects. It is

a solid implementation, using a Jacobian LCP approach. It therefore allows you to

create complex joints simply. In my experience, it can be difficult to determine how

the code works. The performance of the engine is also not optimal.

An open-source