An old codebase that I've tinkered with and always wanted to adapt to RPI style has a pretty cool feature list..
Some of Dawns features include:
Compiles and runs under Unix (Linux, FreeBSD, OpenBSD), Windows (Cygwin and Microsoft Visual C++), and OS X
Full MXP (MUD eXtension Protocol) support - probably the most advanced MXP server on the net.
MSP (MUD Sound Protocol) support
MCCP (MUD Compression Protocol) support
Fully Customizable Colour System, with mudwide templates
Support for ANSI, IRC and HTML colouring conventions
OLC (online construction), many MXP driven - including the following in game editors:
Game editor (gameedit, customize the behaviour of a number of game features - more on this later!)
Area editor (aedit)
Room editor (redit)
Mobile editor (medit)
Object editor (oedit)
Help editor (hedit)
Race editor (raceedit)
Class editor (cedit)
Clan editor (clanedit)
Skill Group editor (skgrpedit - for editing things like 'mage basics')
Spells/Skills editor (sedit)
Social editor (socedit)
Ban editor (banedit)
Mix editor (mixedit)
Deity editor (dedit)
Herb editor (herbedit)
Command editor (comedit)
Mobile Program editor (mpedit)
A number of aspects within the OLC editors are automated:
Automatic saving of olc work every 15 minutes and prior to hotreboots, reboots and shutdowns
Automatic balancing of mobs when you set their level, (the stats can then be overridden)
The autobalance parameters are easily customized for a muds requirements (see system/mob*.txt within the support files download)
Automatic adjustment of racial flags, body parts, form etc when you set a mobs race
Ability to rebalance all the mobs in an area/vnum range with the autobalance command
Ability to adjust room flags on a range of vnums with the setrooms command.
Ability to read and convert rom area files
GameEdit - The Game Settings Editor
Gameedit allows the editing of a large number of game parameters, text fields and values.
The game settings editor is fully MXP enabled, every underlined word in the example is a link that can be clicked to edit settings. The mxp feature does require an MXP capable mudclient such as mushclient to be used.
Replay command works for all channels as well as tells (e.g. replay immtalk) - imm only.
Separate DNS and Ident resolving process (meaning DNS lookups don't lag the mud)
Laston database, with search criteria
Extensive helps (over 1000)
Player Help searching command - helplist <keyword>
Textsearch command, able to search for any text, searching the following:
helps
socials
roomname
roomdescription
roomextdescript
objdescription
objextdescript
mobdescription
mobprog
Mobprog debugging and development:
Online mobile programming help using the mobhelp command (with no parameters to list all).
A 'token' object (which is invisible to mortals, can optionally stay in a players inventory over death, and can optionally degrade over time). Mobs can use this to tag players and remember state - e.g. when a player kills a citizen in mekali they are given a token. Guards and other citizens in mekali change their behaviour depending on the number of 'I killed a mekali citizen' tokens a character carries.
Room progs are simulated by putting a mob in the room with the unseen flag (with this flag, the mob can only be seen with holylight and is unaffected by area attacks). Object progs are currently not available, but are planned when a complete scripting language will be fully embedded.
Automatic logging of mobprog bugs and view the call stack (log and callstack accessed with mpinfo).
Help with the mobprog if checks using the ifhelp command.
Queued events using mob queue command: (e.g. mobhelp queue)
Extensive admin commands and information
Extensive "wiznet" information services that lets you know of ongoing events (such as players connecting)
"Hot reboot" feature lets you update the server without players having to disconnect
Source code supplied (C++)
Integrated web server - lets players check who is on in their web browser, before connecting, and other things, like viewing help files.
MudFTP/DawnFTP support - lets you edit room descriptions etc. in your favourite text editor
Ability to disable mudftp, dawnftp and irc connection support
Automapper including support for maps of different scales - shows an text-based map of the current room and surrounding rooms.
Clans with ranks
Personal and Clan banking
Intergrated name generator into creation
Spell system which supports creating new spells by making an alias to an existing C++ spell function
Arealist automatically sorted by level and alphabetically (depending of the command used to access it).
Letter writing
Lockers and mail boxes
Corpses autosave
Option to have short descriptions in place of player names
Ability for players to introduce themselves (so their name appears by their short for selected players)
Support for different who list formattings
Idle time shown in the wholist for all formats
Optional Remort support (support intergrated into race, class and game edit), remort process integrated into the mobprog system (mobhelp remort)
Second weapon support - can be a skill or free to all players
Separate OOC rooms
Generic channel system, making it easy to add new channels
Advanced note functions including forwarding, respooling and wordwrapping.
Advanced language systems including over unique 10 languages
Global socials
Ability to subdue as an alternative to killing
XP is also awarded for roleplaying (by default)
Ability to bury and dig up items
Ability to ride and tame pets
Speedwalk and players leaving tracks/trails
Directional yelling (i.e. you can hear the direction the yell came from, and volume)
Alias with parameter subsitution
Dueling system for pkill combat (when enabled in gameedit)
Intelligent object manipulation (E.g. objects automatically unlock when you attempt to open and have the key, when you have key and attempt to lock, it will automatically be closed)
Ability to load players into the game while they aren't logged in, edit their pfile and resave or abort changes.
...
There are many many many more features, but this is just a taste.
www.dawnoftime.org/code.html