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Build question

Apprentice at 2006-08-20 01:56
For Ken:
How does the classic Build Engine textures the floor (and cellling)? Does it make use of the top/bottom vertical span buffers from the wall drawing?
Awesoken at 2006-08-20 03:48
You mean fill? Yes, it uses the top/bottom vertical span buffers (umost[] and dmost[]) for ceilings and floors. Since I draw (non-sloped) ceilings and floors with horizontal lines, I must convert from a list of vertical spans to horizontal spans. That code is done inside ceilscan() and florscan() using a series of while loops. (These while loops can be located by searching for "bwall =" in ENGINE.C)