This is a February 2001 snapshot of the Struggle For Nyrilis MUD's Phase 3, a heavily rewritten C++ descendant of Jeremy Elson's CircleMUD, a cousin of Chris Jacobson's LexiMUD engine, with heavily rewritten and extended pieces from Thrytis' Death's Gate MUD. Ultimately this goes back to DIKU.
This is ancient C++, meant for gcc 2.95. Most of the STL-like data structures are courtesy of Chris Jacobson. Those based on safe pointers were implemented by Daniel Rollings AKA Daniel Houghton. Unfortunately, comments are sparse; extensive diff'ing will be needed to show the extent of divergence from its LexiMUD cousins.
LexiMUD and SFN shared snippets and rewrites of the scripting engine, though they diverged particularly in that SFN used pre-parsed function pointers to accelerate the scripting language, while LexiMUD integrated a proprietary JIT engine.
Of particular note was a fusion of AD&D features with a GURPS-like skill system which made character levels more of a visible score than any determination of skill.
Modern compilers will likely flag a lot of buffer size errors that were simply not a concern at the time; 8192 byte shared buffers being cleared and flushed were apparently enough for a few dozen user's screenfuls of text and entered commands.
Crypto support was broken at the time of this snapshot. You'd have to be mad to run this online in the same container as anything important whatsoever.
CVS history omitted.
Oasis OLC was a notable snippet popular for CircleMUD at the time. It was incorporated, and vastly rewritten until its interface was all that appeared the same, as you'd expected for a change from a heavily refactored C to a C++ codebase. It relied heavily on a new Editor class which used a vastly deprecated way to use memory offsets and casting to easily reuse code, determined by data in compiled literal structs.
After major rewrites from C to C++ and a vast amount of refactoring and added features, there are still pieces of code recognizably belonging to Jeremy Elson's CircleMUD, which falls under the DikuMUD license. The CircleMUD FAQ and README have been included to respect this.
All code contributed by Daniel Rollings (AKA Daniel Houghton) is under the MIT license. Lacking commit history, it will take a while to part this out.
This is for curiosity only. You'd be crazy to run this on the modern internet.