Wolfenstein: Enemy Territory Documentation © 2003 Splash Damage, Ltd. All Rights Reserved. |

Surfaceparms
The default surface type is stone. For all other surface types you will have to create shaders so that the impact sound/mark is correct for the material. Current surface types are as follows:

stone (default) | puff of smoke, heavy boot on concrete surface sound
glass | usually on glass func_explosive entities
grass steps | brown bullet spray, springy footsteps
gravel steps | brown bullet spray, crunchy footsteps
metal steps | puff of smoke, clanky footsteps, metallic ricochet
roofs steps | clanky footsteps
snow steps | white bullet spray, crunchy footsteps
wood steps | puff of smoke, hollow steps

Landmines
A landmine is a small anti-personnel device used to blow up members of the opposing team. In order to allow players to place a landmine, there must be a floor surface with a surfaceparm type of landmine. This is a special surface type which can be used either on its own or with additional surfaceparm types.

As a rule only add the landmine surfaceparm to 'soft' materials like sand, earth etc. In the Enemy Territory game all wood / concrete / stone surfaces were excluded from landmine use.