Acknowledgments
My quest to create robust game physics, although difficult, would have been impos-
sible without the contributions of a handful of skilled code writers and mathemati-
cians who pu blished papers and articles, and who gave SIGGRAPH presentations and
released source code. Although there are many more, I am thinking particularly of
Chris Hecker, Andrew Watkin, and David Barraf. Their early c ontributions were the
lifeline that those of us who follo wed needed.
I would like to thank the hard work and dilligence of the technical review team on
this book, both the first edition team—Dav e Eberly, Philip J. Schneider, Dr . Jonathan
P urdy, and Eitan Grinspun—and Matt Smith, who reviewed the second edition mate-
rial with great patience and