This book couldn't have been completed without the help and guidance of a whole lot of people. I'll try to remember
them all here. First, thanks to Wes Beckwith and Jim Hill at Wordware Publishing. They were extremely forgiving of my
hectic schedule, and they helped guide me to finishing this book. I also must thank Alex Dunne for letting me write an
article in 1998 for Game Developer magazine. If I hadn't written that article, I never would have written this book.