Thanks for the encouragement guys! In all honesty though the engine isn't truly 3D. Internally it works more along the lines of Doom. As I learn more I'll probably get more ambitious and write a real 3D software renderer like Quake, but until then this is the pinnacle of my programming prowess.
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Where do you get your knowledge from?
There isn't any one large source of information I reference. Aside from some introductory books, I've had no formal programming education on any of these subjects. I got started in software rendering when a great guy called Robert Rodgers taught me how to write a very simple Wolf3D clone (no wall/floor textures, just big colored cubes). From then on my greatest resource was the Ken Silverman (Build engine author) forum, where a handful of people like myself would exchange different ideas. But now that that's closed, I haven't the slightest idea where you'd go for help...
