Ken Silverman's GROUFST2 Terrain Raycaster Ported to AS3

Ken Silverman's GROUFST2 Terrain Raycaster - wonderfl build flash online

Simple nice heightmap terrain raycaster, a good start for your own voxel engine.
Fork it here:
http://wonderfl.net/c/7d41
or
http://flaswf.googlecode.com/svn/trunk/GROUFST2/
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Update: April, 4，2011
GROUFST2 Ported to HaXe(Supporting targeting swf and cpp both):
Source Code: https://flaswf.googlecode.com/svn/trunk/GROUFST2/Groufst2HXNME
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Update: 11, 11，2011
Add HTML5 support:
Source Code: https://flaswf.googlecode.com/svn/trunk/GROUFST2/Groufst2HXNME/Groufst2NME_HTML5/
DEMO:  https://flaswf.googlecode.com/svn/trunk/GROUFST2/Groufst2HXNME/Groufst2NME_HTML5/Export/html5/bin/index.html (Very, very slow.)
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Original source code can be found at Ken's website:
Qbasic: http://www.advsys.net/ken/voxlap.htm (GROUFST2.BAS)
EVALDRAW: http://www.advsys.net/ken/download.htm (evaldraw.zip\demos\groufst2b.kc)

And

Happy Coding 2011!