   BSP....Whats the other one called
  Hi, I''m trying to learn about game engines and level editors, i''ve found that the indoor like engines,(quake) are bsp so whats outdoor engines format like flight sims and racing games?Thanks    ---------------------------------------------------------------------   There are 10 types of people in this world, those that  understand binary and those who don''t. 
  Quadtrees, Octrees ? ;  For outdoor game culling, use quadtree if the terrain is pretty flat.. but if you want to speed up Collision Detection (I know you want), or if you have high height difference in the level, you should look into the 3d version of quadtree called octree. www.gametutorials.com has some info   ----------------------------------------------Petter Nordlander"There are only 10 kinds of people in the world. The ones that understand binary and the ones that does not" ;  PVS (Potential Visibility Sets) ? ;  ThanksIs it just me or isn''t outdoor engines very popular, all the info on the net seems to be about portals and bsp.I''ve had no luck finding useful info on octree stuff so i''m thinking of scraping my outdoor idea and go with a more well know format 