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on 16 August 2017
This book provides algorithms for detecting collisions. But if you also need finding the intersection points (for collision resolve or simply rendering hits in your game), this book will be almost useless.
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on 3 January 2013
As other reviewers have mentioned this is a short book. However, in that space the author manages to clearly explain the concepts.

The algorithms presented really help to illustrate the ideas and this has been a valuable resource for writing and improving collision detection routines.

This is much clearer than a lot of the similar articles you can find on the internet and is a brilliant starting point for new game developers.
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on 28 February 2014
Good book. Simple concepts, great if you have no idea how collision is done. One little complaint is the example on Point to Point collision I found to be a waste of a page.
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on 15 March 2015
A short concise book which deals with the subject in a a clear no-nonsense manner. It serves up, in succinct text and simple C code, the principles of 2D game collision. The principles are preceded by a primer/revision of the necessary mathematical concepts, once again, delivered in a straightforward manner. The book is both a good read and a handy reference.
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