What is "The Lich"?
Lich is an open source scripting engine for text-based MUDs. It is not a complete front-end in and of itself: it operates much like a proxy server and communicates with the user through their chosen front-end (effectively giving the appearance of expanding the front-end's features with its own). It allows you to write and run scripts for a text-based MUD in the Ruby language.
Lich was originally created by Shaelun, who brought it up from an idea to version 3.57. Starting with version 3.58, Lich is maintained by Tillmen. Tillmen's versions focus more heavily on Simutronics games, specifically Gemstone IV.
What can Lich do for me?
The Lich program, absent of any scripts, doesn't appear to do much of anything (besides allow you to alias commands in the game). What Lich is doing behind the scenes allows you to use pretty powerful scripts, such as:
- go2: This script makes long and short journeys easy. It is powered by a database of 18,677 rooms with 42,695 known movements connecting those rooms (as of 10-2-2010, for Gemstone IV). Some of those movements include tasks such as navigating mazes, dealing with slippery ice, or waiting in line to use a rope bridge. It includes a large list of common locations in each town, and takes you to the closest one. For example typing ";go2 bank" will take you to whatever bank is closest to you.
- narost: This script pops up a window to show you which room you a in on a map. The script originally used only Tsoran's maps, but since those are becoming increasingly outdated, new maps are being created and added to narost. The script continues to show you what room you are in as you move around, changing maps as needed. It allows you to click on a room to make the go2 script take you there, and some other things.
- infomon: This script is responsible for tracking any useful information that the main Lich program doesn't. The most useful thing it tracks is the spells that are on you, and their remaining time. It also keeps track of other peoples spell ranks that use Lich, to give more accurate spell tracking.
- lnet: This script is a simple chat script that allows you to chat with other people using Lich. It is a great source of help for those new to Lich. It also allows scripts to transfer information to other characters (disabled by default) to allow, for example, a spellup script (waggle) to know exactly how many casts of what spells another character needs.
- repository: This script allows you to upload and download scripts from the Lich server. There are many, many more scripts available for tasks big and small.
In addition to the powerful Ruby scripts, Lich can run most WizardFE/Stormfront scripts unaltered. This allows you to use the scripts you already have, but since Lich is running them, you can have any number of them going at once. However, learning a little Ruby goes a long way. Scripts that take a hundred lines in WizardFE/Stormfront can usually be rewritten as a dozen or so lines in Ruby, and work much better.
What operating systems does it work with?
Starting in version 3.58, Lich is written completely in Ruby. This means it should it should run on any platform that can run the Ruby interpreter. Lich is developed on Linux, but the majority of the user base uses Windows (XP, Vista, 7, 8).