Bukkit

What is ChainWorld?

ChainWorld creates an asynchronous multiplayer experience for Minecraft. This idea is not new. ChainWorld is great for groups of users who want to play Minecraft together but live in different time zones or have busy schedules.

Want to try it out? Jump on the test server at: serv.nickmacholl.com:25565

How does it work?

Players take turns playing on the server; only one player is allowed on the server at a give time. If a player attempts to login out of sequence, they are put in a queue. A player's turn expires when they die or hit the time limit specified by the administrators. ChainWorld has some built in features to make the asynchronous gameplay more fun; such as: email notifications, dynamic difficulty, and randomized player spawns. Additionally, all player data is deleted upon death so each lease is a fresh start in the world.

Joining The Server

See this page for details on how players join the server.

Email Notifications

See this page for details on how email notifications work.

Dynamic Difficulty

See this page for details on how dynamic difficulty works.

Randomized Spawns

See this page for details on how randomized spawns work.

Installation

Simply download the archive which contains ChainWorld.jar, the ChainWorld folder and the lib folder and extract it to your /plugins directory. It's a good idea to open up the config.yml in the ChainWorld folder and configure the plugin before reloading/starting your server.

More detailed installation directions can be found here.

Commands

/cwlease - Displays the time and date of the lease expiration as well as the number of hours remaining. Can be run by players and the console.

/cwquit - Terminates the current lease. This is basically equivalent to the /kill command. Can be run by players and the console.

/cwregister <email> - Registers an email for the player. This email is used to send email notifications when they are given a lease. Can only be run by players.

/cwunregister - Removes the player's email from the registry. Can only be run by players.

Permissions

The following ChainWorld permissions are for commands and they are given to players by default.

chainworld.lease - Allows players to use the /cwlease command.

chainworld.quit - Allows players to use the /cwquit command.

chainworld.register - Allows players to use the /cwregister and /cwunregister commands.

The admin permission is not given by default; use wisely. Players with this permission are ignored.

chainworld.admin - Essentially makes a player invisible to the plugin for administrative purposes.

Default config.yml

#-----------------------------------------
#     ChainWorld Configuration File
#-----------------------------------------

#Lease Paramaters (time in integer hours)
#The timeout period is how long a user has to login
#after being assigned a lease. The duration is how
#long the lease will last.
leaseTimeout: 12
leaseDuration: 72

#Dynamic difficulty will make the game harder as
#the lease ages. This will override the server settings.
dynamicDifficulty: true

#Sets the sector dimension for random spawns.
#Set to 0 to disable random spawn generation.
spawnDimension: 1000

#Dynamic MOTD will replace the server's MOTD on the
#server list with dynamic information about ChainWorld.
dynamicMOTD: true

#Email Credentials for notifications.
#Leave blank to disable email notifications.
username:
password:

#Email server settings (GMAIL default)
auth: true
starttls: true
host: smtp.gmail.com
port: 587

Source

You can follow this project on GitHub.