Sorry for the late response!

Great project, my friend! I’m going to go out on a limb here and say you’ve gone far beyond my amateur experimentations! That looks fantastic

I want to start posting up some source, but none of it is robust enough right now and I’d hate to give false information to anybody.

I’ll probably start with posting source code clips in posts that I can make sure are robust enough to be informative.

My ray caster in XNA merely did a standard ray cast (I actually copied verbatim my entire function from a C# GDI project version) and then rendered simple lines to the screen for the columns with the appropriate colour (or appropriate texture slice).

Nothing too impressive at the moment I’m afraid. The ray casting algorithm itself is very much mundane also.

Best regards,
Terry

by the way, I also have been working on a tiny raycast engine you can check it out here: http://wolf3dx.codeplex.com

The full source code is available.