Game Physics Engine Development, 2nd Edition

480 Chapter 19 Other Programming Languages

The additional data parameter is used to pass data to the force generator function

(in C++ this isn’t needed because the implicit

this pointer contains the generator’s

data). You can then define any number of such functions, and even hold them as

function pointers in other data structures.

I have used the C++ standard template library at a numbe r of points in the

source code to represent a variable-length array. Most other languages have native

equivalents, but C does not. To implement these structures (the list of force gener-

ators and the list of rigid bodies, for example), you can use singly or doubly