Hi, i want to implement a bumpy cement like surface but i cant find anything about relating different parts of the terrain to the tdf file and different types of surface. Since i dont have 3ds max yt tutorials are no good for me , i only use 3dsimed so help pls! I have existing working materials with textures assigned i only need to change to rough terrain type. I d also like to ask what things are defined in "racesurface_" objects, eg. does it make any difference to AI or it is only for the graphics engine?