ColdMUD

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ColdMUD is a type of MUD server software, similar in many ways to MOO and CoolMUD, from which it is descended.^[1] It is a text-based online virtual reality system to which multiple users are connected at the same time. Created by Greg Hudson, it has many similarities to both MOO and CoolMUD. However, there are many important differences from MOO in its embedded, domain-specific programming language, ColdC, and in its implementation of persistence and network services:

Like CoolMUD, but unlike MOO, ColdMUD's object database is fully disk-based. Whereas MOO's implementation of persistence is based on periodic "checkpoints" during which the complete state of the server's object memory is written to disk, CoolMUD keeps the majority of the object database on disk and keeps a cache of the most frequently used objects in memory, a strategy known as incremental persistence. The ColdMUD implementation of the disk-based object memory is based on Marcus Ranum's work from UnterMUD.
Unlike MOO, the embedded programming language (ColdC) can be used without using the runtime as a MUD (that is, network accessible) daemon.

History

Versions through 0.11.0 were written by Greg Hudson and released between 1993 and 1994. Version 0.10 was Hudson's last official release, and the last fully documented ColdMUD server. Colin McCormack assisted in the release of version 0.11.0, which eventually stabilized as 0.11.4.

Subsequently, Jordan Baker added some basic task scheduling primitives, and along with other modifications, this became an unofficial 0.12 version.

At this point Brandon Gillespie forked ColdMUD and it became known as "Genesis". Over the next few years, an active community of contributors made many bug fixes and improvements, but significantly changed the operation of many built-in functions and datatypes. Genesis came to be used by several online communities and games, especially a very large commercial MUD, "The Eternal City".

References

↑ Bartle, Richard (2003). Designing Virtual Worlds. New Riders. p. 11. ISBN 0-13-101816-7. "MOO had two important offspring: Pavel Curtis' LambdaMOO (which was to become a favorite of journalists, academics, and social misfits) and, via CoolMUD, ColdMUD (an attempt to create a software-engineering quality virtual world authoring system)."

External links

v t e MUDs

Major branches	AberMUD DikuMUD LPMud MU*

Minor branches and codebases	CD CircleMUD CoffeeMUD ColdMUD CoolMUD Copper DGD EnvyMUD FluffOS GodWars Merc Mordor MudOS MUSH NUTS ROM Sequent SMAUG Talker TinyMUD TinyMUCK BBS MUDs – Fazuul Kyrandia MajorMUD Quest for Magic Scepter of Goth

Programming languages	ColdC LPC MPI MOO MUDDL Mudlle MUF SWLPC

Mudlibs	Ain Soph Mudlib CDlib Dead Souls Mudlib Discworld Mudlib Lima Mudlib LPUniversity Mudlib MorgenGrauen Mudlib Nightmare Mudlib TMI Mudlib

Protocols	InterMUD MCCP MXP

Clients	Comparison of MUD clients MUSHclient TinTin++ TinyFugue zMUD

Concepts and terminology	Alternate character Avatar Avatar customization Bartle Test Buff Camping Computer game bot Consider Cybersex God Gold farming Gold sink Griefer Grinding Hack and slash Immortal Implementer Kill stealing Lag Looting Mob / Monster MUD client Mudlib Mudflation Nerf Online creation Online wedding Persistent world Player character Player versus environment Player versus player / Playerkilling Powerleveling Quest Remort Rent Spam Spawning Spod Social verbs Syntax guessing Tank Twinking Virtual good Wizard

History	Chronology of MUDs MUD trees "A Rape in Cyberspace" "A Story About A Tree"

Publications	Designing Virtual Worlds Imaginary Realities Life on the Screen: Identity in the Age of the Internet Terra Nova A Theory of Fun for Game Design

Companies and organizations	Areae Ingenii Interactive Iron Realms Entertainment Jagex Lysator Kesmai The Mud Connector Mythic Entertainment Mythicscape Plaintext Players Simutronics Skotos

People	Alan Cox Aleksi Asikainen Amy S. Bruckman Andrew Gower Ben Laurie Brad McQuaid Brian Green Bruce Woodcock Cat Rambo Chip Morningstar Christopher Howard Wolf Dr. Cat Edward Castronova Elonka Dunin Espen J. Aarseth George Reese Greg Stein J. Todd Coleman James Aspnes Jason Scott Sadofsky Jeremy Elson John Viega Joi Ito Judy Malloy Julian Dibbell Kelton Flinn Lars Pensjö Lennart Augustsson Lisbeth Klastrup Mark Jacobs Matt Mihaly Michael Lawrie Mizuko Ito Nick Yee Noah Wardrip-Fruin Paul Barnett Pavel Curtis Randy Farmer Rich Salz Rich Skrenta Richard Bartle Roy Trubshaw Sherry Turkle Stephanie Shaver Steve Yegge T. L. Taylor Wes Platt

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