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This is a Doom source port created by Lee Killough in 1998 after he left the Boom team. It is regarded by some as Boom's successor. As with Boom, MBF was limited to running under MS-DOS. MBF was originally licensed under the non-free Doom Source License, but Killough has since relicensed his work under the GNU GPL. MBF formed the basis of the SMMU port by Simon Howard. In 2004 it was ported to Windows with the name WinMBF by Team Eternity. MBF adds several new features: Friendly monsters, including single-player helper dogs; Bug fixes, such as a fix for the blockmap limit (MBF includes an internal blockmap builder); A "beta" mode, in which MBF simulates the behaviour of press release beta version of Doom; This includes the version of the BFG9000 included in the beta; Higher-resolution 640x400 screen mode; A means to change the level's sky texture (Linedef action 271); Several new Dehacked thing flags (TOUCHY, BOUNCES, FRIEND) and action functions with parameters (e.g. Spawn, PlaySound, RandomJump). In 2019, developer Sakitoshi created his own build of the then latest MBF 2.04 source release, entitled MBF-Sigil. The first release was on June 8, 2019. Alongside all of MBF 2.04's features, Sakitoshi initially only sought to add SIGIL support, taken from the Libretro PrBoom source tree to achieve playability of SIGIL under DOS. Later, support for No Rest for the Living and Master Levels for Doom II was added and the build was rebranded to MBF-SNM. The latest release under this moniker, named SNM10, was released on December 2, 2019. |
