DO/SHD
From Dark Omen Wiki
Contains a heightmap with vegetation in the same format as in PRJ's TERR block. Alternative possible functions:
- Shadow map for terrain. Evidence: by subtracting from PRJ's TERR heigthmap a good shadow map results. However, not all maps have .SHD files.
- Path finding costs. Evidence: none.
- A useless vestigal.
You can extract these as .TGA images by the "export shadow" command from the PRJ Text Mode Editor.
Currently used to generate a shadow map layered on top of the game terrain.