CoffeeMUD

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CoffeeMUD is a MUD codebase written by Bo Zimmerman. It is a stable Java MUD engine written from scratch and freely available under the Apache 2.0 license. CoffeeMUD is worth noting as it is one of the few Java codebases to achieve several major stable release versions and remain an active project for just over 5 years, as well as the number of users of the engine, according to the Intermud.org Network.

CoffeeMUD maintains an active developer mailing list - subscription information can be found at the main CoffeeMUD site. There is a separate Wiki setup for support and development of CoffeeMUD.

CoffeeMud is written in 100% Java, listening as a telnet server on any specified port. Two web servers can be activated to listen on specified ports. CoffeeMud supports any JDBC/ODBC database and has been successfully tested using MySQL, HSQLDB, and Derby over JDBC, and Access/SQL Server over ODBC. The package also includes a flat-file JDBC system for beginners.

The system includes an API that allows MOBs, Items, Weapons, Armor, Room types, Exit types, and Magic Items to be coded in less than a hundred lines using a template. The new class can then be dropped into the package structure, allowing it to be used after the next server re-boot. This is in addition to the extensive online customization capabilities.

CoffeeMud utilizes a smart threading model that spawns threads only when necessary. It will balance the objects needs for threads versus the systems need to keep thread spawning low.

An advanced message passing system lies at the systems core. Messages are customized for the message source, message target, and how that message appears to everyone else in the room. Each message is coded with basic sensory information so that only the blind miss visual messages, while they don't miss the auditory ones. Messages can also be previewed and modified by every object involved, lending even more environmental realism to coding!

[edit] Features

General Features

ANSI colour support, MSP sound support, MXP tag support, MCCP compression support
Stable, all original code base that's extendable through INI options, Java, and JavaScript, even at run-time
Built in web server for performing maintenance, administration, working on areas, and accessing information
Built in SMTP server for anonymous player emails, mailing lists, announcements, and sending passwords
Use a full blown JDBC/ODBC database, or the built in flat file database
On-line boards (journals) for public and private messaging
7 base classes, 38 subclasses, 6 player races, and over 1200 spells, prayers, songs, skills, and abilities
Customizable races and classes, with level based racial and class skill systems
Over 700 socials, with real-time addition abilities.
Several builder scripting possibilities, including both standard MOBPROG and Javascript
Abbreviate commands, items, mobs, and abilities. Reference all or some
Web-based visual on-line area editing tool available
Customizable security system. Assign privileges on a player-by-player basis
Ability to import CoffeeMud area files, as well as those from ROM, Circle, Smaug, Icey, and others
Mud wide quest support, including automated, time-based, and event based triggering!
Descriptive combat system with race-based natural weapons, ranged weapons and spells, and mounted combat
Contageons and diseases built into the engine. Catch a cold when naked, or poison ivy in the forest
Player lieges and vassels, area Conquest engine, and Legal systems available
Player banking and postal systems available, serving players or clans or both
Full Deity support, with automated blessings to the faithful and curses to the wicked
Full Clan support, including politics, alliances, and automated membership management

Areas and Rooms

On-line area creation. (mobs, areas, exits and items). Never wait for a reboot to publish an area!
Area based climates, seasons, and weather changes that affect game play
Numerous terrain types, including underwater areas requiring spells to breathe
Water rooms requiring swimming abilities
Air rooms with gravity, so items and mobs can fall!
Pits you can fall into, and other deadly traps
Cliffs requiring climbing ability
Cardinal exit directions and many types of doors and exit types, including drawbridges, gates, panels, grates, portals, ladders, curtains, etc..
Customizable system of crime and punishment available for each of your cities.
Mud wide skys and oceans!
Homes and property real-estate system for players and clans.
Customizable conquest system to allow players to conquer and control your areas

Player and MOB features

Wimpy mobs, aggressive mobs, race/alignment protecting mobs, healer mobs, teaching mobs, shopkeeper mobs, swallowing mobs, money changer mobs, chatting mobs, rideable mobs, dragon mobs, guarding mobs, scavenger mobs, thief mobs, mending mobs, etc, etc..
Scripting capabilities to add custom MOB behaviors
Players can customize their character by training their stats, gaining new skills, and practicing ones they know
Fighter, Mage, Cleric, Thief, Bard, and Druid base classes. Customizable class system available online!
Traditional and meaningful race list, including Human, Elf, Dwarf, Halfling, Gnome, and Half Elf. Races are customizable!
Mobiles can chat with players and behave according to your wishes
Fantasy race-based language support with real language-based translations!
Players and MOBs can teach each other their skills or even their language
Usage of abilities and spells dependent on proficiency, practice to learn!
The most unusual and powerful common skill system available for ANY mud!
Mage skills include brewing, scribing scrolls, recharging wands, revoking, plus 300 spells to learn and cast!
Fighters can fight two handed, sweep, cleave, trip, blind fight, kick, roll with blows, break weapons, dodge, parry, disarm, kick dirt, whomp, and more!
Thieves steal, pilfer, detect, disarm traps, bribe, backstab, poison, sneak, observe, bind, sap, shadow, lay new traps, listen, and much more...
Clerics can turn undead, command, heal, protect, animate, lay hands, cast over 200 different prayers, and suffer the wrath of their god when they fail
Bards have lots of unique skills, plus 150+ songs and dances with group wide, or all-enemy effects for all who hear!
Druids control and use weather, polymorph themselves and others, and have access to over 200 unique chants
Player killing is optional for the two fighting players, or other PK systems are settable via the INI file
Saves against poison, undead, fire, cold, gas, and much more..