FLOOR

This article or section is a stub. Please help the Doom Wiki by adding to it.

Doom level format
Things Linedefs Sidedefs Vertices Segs Subsectors Nodes Sectors Reject Blockmap
Extensions: ACS Behavior Leafs Lights Macros Floors
Source port extensions: Extended nodes FraggleScript ExtraData Dialogue Lightmap

The FLOOR lumps are used by the Nintendo 64 port of Hexen as an extension to the port's modified rendering engine. It is required by the console port in order to address the requirement of hardware-accelerated renderer for surfaces to be composed entirely of strictly convex surfaces.

A "floor" is a collection of multiple triangles. There are one such collection for each sector, in the same order as the SECTORS lump. This approach is distinct from LEAFS and other hardware-friendly extensions to the BSP tree, which often correspond to each subsector, instead.

"Floors" are stored in lumps named FLOORxy, where xy corresponds to that of the MAPxy map slot—that is to say, FLOOR01 is loaded when entering MAP01, FLOOR02 is loaded when entering MAP02, and so on.

Floor structure

Each sector is divided into hardware-renderer friendly triangles.

A "floor" is of this form:

Offset	Size (bytes)	Description
0	2	Number n of triangles on this sector
2	n * 6	Triangles

Each triangle is of this form:

Offset	Size (bytes)	Description
0	2	First vertex number
2	2	Second vertex number
4	2	Third vertex number

See also

• LEAFS
• Node builder