Making Graphics Like it's 1993

> Wolf3D didn't have textured floors and ceilings because of performance reasons, but several other similar games had them Blake Stone Rise of the Triad used later versions of the Wolf3D engine and had textured floors/ceilings > Doom and IIRC Duke Nukem as well used a BSP engine which was much more flexible Duke Nukem (Build engine) did not use BSP https://www.jonof.id.au/forum/topic-137.html#msg1548

This is taking a lot of inspiration from Doom, but the actual raycasting engine is more like Doom's predecessors, the most well-known of which is probably Wolfenstein 3D: perpendicular walls, constant floor and ceiling height. Wolf3D didn't have textured floors and ceilings because of performance reasons, but several other similar games had them. Doom and IIRC Duke Nukem as well used a BSP engine which was much more flexible (walls could intersect at any angle, variable floor and ceiling heights…

> Duke Nukem as well used a BSP engine The Build engine didn't use BSP, it treated connections between sectors as portals and rasterized the walls as (90 degree rotated) trapezoids while performing clipping against those portals. This allowed it to have dynamic wall geometry (e.g. moving trains, rotating light fixtures, etc) as well as "room-over-room" setups as long as you couldn't see both rooms at the same time (in both Blood and Shadow Warrior they found a workaround for it allowing to crea…

Really cool. It's also something LLM's are ridiculously bad at, so you kinda have to do it properly.