Hi all i have spent a lot of time trying to get the shadows right in the map. I am usung the advance lighting on wiki, and mainly using spotlights with info null as target. The problem is when i take zombies from one light to another the shadows dissapear into a line ( the edge of the light radius in radiant ) and start a shadow on the opposite direction.

I have tried also making 2 or 3 lights target the same info null but it is still the same.  The shadows of the zombies walking into the map are going in fairly nicely but in the playable areas i am not finding a good set up for lighting the whole room with shadows.

If anyone has any tips / suggestions thanks