Tricks of the Game-Programming Gurus is a book written by André LaMothe, John Ratcliff, Mark Seminatore, and Denise Tyler, and published by Sams Publishing in July 1994. It is a 746-page introduction to game programming focused on C- and x86 assembly-language coding for PCs running MS-DOS. It is notable due to its strong focus on Doom as a design reference, being prominently billed as a gateway to creating one's own "Doom-like" games. André LaMothe was later the lead programmer of the Rex B...| DoomWiki.org
DoomEd was the level editor used by id Software and Raven Software to create levels. It was written in Objective-C for the NeXTSTEP operating system. Contrary to editors created by the community, it did not work directly on WAD files, but only on a text format that was then compiled into a binary-format map by DoomBSP; both tools were meant to be used in tandem.| DoomWiki.org