This code was written by Ian Parberry to accompany his book "Introduction to Game Physics with Box2D", published by CRC Press in 2013.

This basic and elementary single-screen 2D sprite-based fixed-function graphics game engine uses Microsoft DirectX 9.0 for graphics, some Windows API functions, and TinyXML for reading XML files. It shouldn't be necessary for you to drill down into the code, but you should probably know about the interfaces. This book is not about writing game engine code, it's about incorporating game physics into an existing game engine.