World Library  
Flag as Inappropriate
Email this Article


Article Id: WHEBN0000904526
Reproduction Date:

Title: LPMud  
Author: World Heritage Encyclopedia
Language: English
Subject: Chronology of MUDs, MUD trees, NannyMUD, LPC (programming language), Genocide (online game)
Collection: 1989 Video Games, Freeware Games, Lpmud Gamedrivers, Mud Servers
Publisher: World Heritage Encyclopedia


LPMud, abbreviated LP, is a family of MUD server software. Its first instance, the original LPMud game driver, was developed in 1989 by Lars Pensjö (hence the LP in LPMud).[1][2][3] LPMud was innovative in its separation of the MUD infrastructure into a virtual machine (known as the driver) and a development framework written in the LPC programming language (known as the mudlib).[4]


  • Motivation 1
  • Evolution of LPMuds 2
  • LPMud talkers 3
  • See also 4
  • References 5
  • Further reading 6
  • External links 7


Pensjö had been an avid player of TinyMUD and AberMUD. He wanted to create a world with the flexibility of TinyMUD and the style of AberMUD.[5] Furthermore, he did not want to have sole responsibility for creating and maintaining the game world. He once said, "I didn't think I would be able to design a good adventure. By allowing wizards coding rights, I thought others could help me with this."[6] The result was the creation of a new, C-based, object-oriented programming language, LPC, that made it simple for people with minimal programming skills to add elements like rooms, weapons, and monsters to a virtual world.[7]

To accomplish his goal, Lennart Augustsson convinced Pensjö to write what today would be called a virtual machine, the LPMud driver. The driver managed the interpretation of LPC code as well as providing basic operating system services to the LPC code. By virtue of this design, Pensjö made it more difficult for common programming errors like infinite loops and infinite recursion made by content builders to harm the overall stability of the server. His choice of an OO approach made it easy for new programmers to concentrate on the task of "building a room" rather than programming logic.[3]

Evolution of LPMuds

Pensjö's interest in LPMuds eventually waned in the early 1990s, but by that time LPMud had become one of the most popular forms of MUD.[8] His work has been extended or reverse engineered in a number of projects:

The LPMud approach also enabled the development of gaming frameworks built in LPC that game builders could use as the foundation for their worlds. The original mudlib was the Genesis Mudlib that came with LPMud drivers up to LPMud 2.4.5. As LPMud matured, the separation between driver and mudlib grew to the point that the developers of MudOS and DGD did not ship their drivers with fully functional mudlibs. Popular LPMud mudlibs include:

Though an LPMud server can be used to implement nearly any style of game,[13] LPMuds are often thought of as having certain common characteristics as a genre, such as a mixture of hack and slash with role-playing, quests as an element of advancement, and "guilds" as an alternative to character classes.[14][15]

Notable early LPMud games still in operation as of 2010 include Pensjö's original Genesis LPMud as well as Ancient Anguish, BatMUD, Darker Realms, DartMUD, Genocide, Lost Souls, NannyMUD, Nanvaent, Shattered World and Xyllomer.

LPMud talkers

LPMud was used as the basis for the first Internet talker, Cat Chat, which opened in 1990[16].

See also


  1. ^  
  2. ^ Shah, Rawn; Romine, James (1995). Playing MUDs on the Internet. John Wiley & Sons, Inc. p. 158.  
  3. ^ a b "The History of Pike". Pike. Retrieved 2009-09-09. In the beginning, there was Adventure. Then a bunch of people decided to make multi-player adventure games. One of those people was Lars Pensjö at the Chalmers university in Gothenburg, Sweden. For his game he needed a simple, memory-efficient language, and thus LPC (Lars Pensjö C) was born. About a year later Fredrik Hübinette started playing one of these games and found that the language was the most easy-to-use language he had ever encountered. 
  4. ^  
  5. ^  
  6. ^ Mulligan, Jessica; Patrovsky, Bridgette (2003). Developing Online Games: An Insider's Guide. New Riders. p. 451.  
  7. ^ Giuliano, Luca (1997). I padroni della menzogna. Il gioco delle identità e dei mondi virtuali [The masters of the lie: the play of identity and virtual worlds] (in Italian). Meltemi Editore. pp. 101–102.  
  8. ^ William Stewart (2002). "MUD History". The original LPMUD was written by Lars Pensjl and others, and became one of the most popular MUD's by the early 1990s. 
  9. ^ a b Towers, J. Tarin; Badertscher, Ken; Cunningham, Wayne; Buskirk, Laura (1996). Yahoo! Wild Web Rides. IDG Books Worldwide Inc. p. 141.  
  10. ^  
  11. ^ Shah, Rawn; Romine, James (1995). Playing MUDs on the Internet. John Wiley & Sons, Inc. p. 164.  
  12. ^  
  13. ^ Hahn, Harley (1996). The Internet Complete Reference (2nd ed.). Osborne McGraw-Hill. p. 557.  
  14. ^  
  15. ^ Towers, J. Tarin; Badertscher, Ken; Cunningham, Wayne; Buskirk, Laura (1996). Yahoo! Wild Web Rides. IDG Books Worldwide Inc. p. 141.  
  16. ^ "Talker History". NetLingo the Internet Dictionary. Retrieved 2010-04-13. Single-server talkers on the internet first appeared in 1990, with the talker Cat Chat. This was a hack of the LPMud source code, put together by Chris Thompson (aka 'Cat') at Warwick University, in England. 

Further reading

  • Shah, Rawn (1995). "Part 2: LPmuds". In Shah, Rawn; Romine, James. Playing MUDs on the Internet. John Wiley & Sons, Inc. pp. 155–231.  
  • Busey, Andrew (1995). Secrets of the MUD Wizards.  

External links

  • LPMud FAQ
  • LPMud Timeline
  • LDMud Website
  • - A resource for MUDs that use LPC.
  • MUDseek - A Google custom search engine for MUDs.
  • LPMuds at DMOZ
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.