Difference between revisions of "Minecraft"

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===Extras===
 
===Extras===
 
* You may wish to create a specific folder for the server (/srv/minecraft, for example)
 
* You may wish to create a specific folder for the server (/srv/minecraft, for example)
* Establishing a Minecraft-specific user is recommended for security. The reason for this is that Minecraft, being beta software, may still contain security holes. By setting it to a specific, unprivileged user account, anyone who successfully exploits your Minecraft server will have only gotten access to your unprivileged user. (Meaning, don't ever run the server as root!) Here's how:
+
* Establishing a Minecraft-specific user is recommended for security. The reason for this is that Minecraft, being beta software, may still contain security holes. By setting it to a specific, unprivileged user account, anyone who successfully exploits your Minecraft server will have only gotten access to your unprivileged user. (Meaning, do not ever run the server as root!) Here's how:
 
** Use 'adduser' to add the user
 
** Use 'adduser' to add the user
 
** Disable that user's individual login by removing the password (you can still 'sudo su - mineserver' to open a shell as the user)
 
** Disable that user's individual login by removing the password (you can still 'sudo su - mineserver' to open a shell as the user)

Revision as of 23:16, 3 October 2011

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Minecraft is a commercial game very popular with geeks. It's a game about blocks. You can build a computer out of the game thanks to logical switches. There is a parallel world. Zombies, pigs, spiders, sheeps, wolves that you can tame, etc... This wiki page is here to help you install the game :)

Getting the game

Buy your copy here : http://www.minecraft.net

Put the files in Template:Filename or wherever you want to. And make the game executable :

$ chmod u+x minecraft.jar

Install java

The devs say Sun's java is required but OpenJDK works fine :

# pacman -S openjdk6

Play the game

Run minecraft with :

$ java -jar $HOME/.minecraft/minecraft.jar

If you want to allocate it more ram, do like this :

$ java -jar -Xms1024M -Xmx2048M $HOME/.minecraft/minecraft.jar


Extras

There are several programs and editors which can make your Minecraft experience a little easier to navigate. The most common of these programs are map generators. Using one of these programs will allow you to load up a Minecraft world file and render it as a 2D image, providing you with a top-down map of the world.

Minutor

Minutor is described as a minimalistic map generator for Minecraft. Don't let this mislead you, it generates maps of existing worlds, not the other way around. You are provided with a simple GTK based interface for viewing your world. Several rendering modes are available, as well as custom coloring modes and the ability to slice through z-levels. Minutor is available in the AUR and can be installed and then run like so :

$ yaourt -S minutor
$ minutor

Minecraft Server

Minecraft is also available as a server, which will allow you to share a world with other players over the Internet. Here's what you'll need to do:

  • Follow the steps above to install Java (or OpenJDK)
  • Download the multiplayer beta server jar from the Minecraft site
  • Just run the jarfile:

(You can sub the -Xmx and -Xms values for the amount of memory you want your server to use. A good rule of thumb is one GB per ten users.)

$ java -jar -Xmx2048M -Xms2048M -jar minecraft_server.jar nogui
  • To configure the server, take a look at this wiki page.

Extras

  • You may wish to create a specific folder for the server (/srv/minecraft, for example)
  • Establishing a Minecraft-specific user is recommended for security. The reason for this is that Minecraft, being beta software, may still contain security holes. By setting it to a specific, unprivileged user account, anyone who successfully exploits your Minecraft server will have only gotten access to your unprivileged user. (Meaning, do not ever run the server as root!) Here's how:
    • Use 'adduser' to add the user
    • Disable that user's individual login by removing the password (you can still 'sudo su - mineserver' to open a shell as the user)
    • Set the new user as owner of all the server files (generated on the first run) by running 'chown -R mineserver:nobody /path/to/server'
  • To leave the server running unattended, take a look into tmux, nohup or screen
  • Taking this a step further, you may even decide to create an init script for it, such as this one.
    • (Please note that the script at that link doesn't quite work with Arch entirely. I haven't had the opportunity to troubleshoot it fully yet, but anyone with time and expertise to do so is encouraged to post one on my talk page and I'll find a proper place for it.)
  • Finally, you may wish to modify your server, to provide additional features:
    • Server Wrappers are one way to add administrative capabilities
    • Bukkit is a powerful modding API, with a wide variety of plugins available
  • You might even set up a cron job with a mapper to generate periodic maps of your world
  • ...or you could use rsync to perform routine backups (though this is one function of the init script above)

Useful links