What does the Unreal Engine and Unreal Tournament Engine use, BSP, cells and Portals, What, I was just wondering because the level are very unquie, not just all corridoor and not all outside, it looks pretty good, and runs great, thanks

im taking a wild guess, but i think Ureal or UT uses BSP trees.

Anyone know exactly?

Unreal/UT uses BSP-trees.

it''s possible that they use portals, too, but i doubt it very much.

//Siigron

Actually, I''m pretty sure that Unreal uses portals. Quake is the one that uses BSP trees.

--TheGoop

yeah, I know Quake uses BSP, but I have no clue what Unreal uses.

If you look through the Unreal technology pages, it tells you..... Unreal is BSP-based, using relatively sparse BSP trees. Tim Sweeney has written a lot on this topic. The Unreal Engine also supports portals (you can do some really wacky things with them by attaching them to movers in UnrealEd, too), but its not a portal based engine.

If you have Unreal or Unreal Tournament, you have UnrealEd - and that contains all the info you really need!

BSP''s with sector portals (each portal connects large areas of non-convex geometry.)