I moved this from a previous post in the "For Beginners" thread: As a personal project I am writing a simple 3d linear shooter engine, I have a basic md2 model reader and texturing system and I am currently working on a binding to ODE with the language I am using (Ada95). Right now for simplicity's sake I am just loading an md2 model as the map, originally I was considering using bsp mapping but I found that they don't handle open spaces well. So now I am looking for a mapping format (or technique/algorithm) that uses a draw distance from the camera (because essentially the camera and the player move on a rail system, they cant turn around or veer off the screen) Any ideas?