More LOS refinements.

Increase LOS rays used in raycast(), limit LOS rays to LOS radius for efficiency.

Signed-off-by: Darshan Shaligram <dshaligram@users.sourceforge.net>

Created by  Robert Vollmert  on September 25, 2009
YDQAWQ3JOVG5Y5VJH6UL35LXFCH55XT5WWETU63RSYYYIA4K3IWAC
Change contents