Hello everyone, I have advanced method of shadow mapping. It is really hard.
It is easy like jail / prison symbol. There are awesome methods of shadow mapping for GoldSrc.
Remember that info_player_start is 32 x 32 x 72 units and we need scale brush 20:1 measure.
32 * 20 = 720
72 * 20 = 1440
For door height: 80 units * 20 = 1600
2 x 2 units = 40 x 40 units,
4 x 4 units = 80 x 80 units,
If you are finish to draw and make group and convert to func_illusionary and change Render-Mode with "Texture Mode" and set 175 or 150 in FX Amount and scale down with Chtr + M -> 0.05 in X, Y, and Z and move to your map brushes.
Remember before shadow mapping for customizations for GoldSource Engine - If you want build "faked" shadow mappings in your map.
Don't worry and save your map and run compilations of VHLT / UMHLT!
Than you will run your map and you see like realistic shadow effects. You feel your map like your map have shadows. Hehe!
If you make realistic radiant than you need more func_illusionary brushes with 0, 10, 20, 30, etc.... in FX Amount. Like it seems radiant-effectable shadow. or simple texture radiant like light effect or your custom radiant. than it looks realistic. ( Or you can ask The303 for texture with radiant mode )