Computers : Entertainment & Games

The heart of any system that simulates the physical interaction between objects is collision detection—the ability to detect when two objects have come into contact. This system is also one of the most difficult aspects of a physical simulation to implement correctly, and invariably it is the main consumer of CPU cycles. Practitioners, new to the field or otherwise, quickly discover that the attempt to build a fast, accurate, and robust collision detection system takes them down a long path fraught with perils and pitfalls unlike most they have ever encountered. Without in-depth knowledge and understanding of the issues associated with engineering a collision detection system, the end of that path is an abyss that has swallowed many a good programmer! Gino van den Bergen's new book is the story of his successful journey down that path. The outcome is his well-known collision detection system, the SOftware Library for Interference Detection (SOLID). Along the way, he covers the topics of vector algebra and geometry, the various geometric primitives of interest in a collision system, the powerful method of separating axes for the purposes of intersection testing, and the equally powerful Gilbert-Johnson-Keerthi (GJK) algorithm for computing the distance between convex objects. But this book provides much more than a good compendium of the ideas that go into building a collision system. The curse of practical computational geometry is floating-point arithmetic. Algorithms with straightforward implementations when using exact arithmetic can have catastrophic failures in a floating-point system. Specifically, intersection and distance algorithms implemented in a floating-point system tend to fail exactly in the most important case in a collision system—when two objects are just touching. Great care must be taken to properly handle floating-point round off errors. Gino's ultimate accomplishment in this book is his presentation on how to correctly implement the G more...

Price: $76.95

Internationally renowned media and literature scholars, social scientists, game designers and artists explore the cultural potential of computer games in this rich anthology, which introduces the latest approaches in the central fields of game studies and provides an extensive survey of contemporary game culture. more...

Price: $85.00

Learn How to Play Smart, Stay Safe, and Have Fun with Online Poker "Under the gun, I had a nut flush draw on the flop, so I go over the top back into the small blind, the guy on the button smooth calls, and I catch the boat on fifth street!" The above quote may not sound intelligible to you now, but it actually makes perfect sense to dedicated poker players. more...

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With the code and instruction in this book, O’Neill shows how to create sophisticated digital characters - building progressively through the chapters to teach and produce a fully functional digital character that can be ported to any number of high-end a more...

Price: $69.95

Whether you’ve been a Dungeon Master (DM) before and want to fine-tune your skills or want to get ready and take the plunge, this is the book for you. It gives you the basics on running a great game, info for more advanced dungeon mastering, guidelines for creating adventures, and tips for building a campaign. more...

Price: $21.99