Game Development Reference
In-Depth Information
At this point you should be comfortable with the terms that appear in the equations of
motion and be able to calculate terms like the sum of forces and moments, mass, and
inertia. You should also have a solid understanding of basic numerical integration tech‐
niques. Implementing these techniques in code is really straightforward since they are
composed of simple polynomial functions. The hard part is developing the derivative
function for your problem. In the case of the equations of motion, the derivative function
will include all your force and moment calculations for the particle or rigid body that
you are modeling. You'll see some more numerical integration code when you get to
Chapter 8 , Chapter 9 , and Chapter 11 .
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