This is a Perl module that implements the Minecraft client protocol. However:

 1. It is not finished.

 2. It may never support 64-bit integers, not any floating point values. These
    are difficult to support, at least without non-core modules.

 3. My particular needs are only to support logging in, idling, then logging
    back out. (This is used to implement waypoints with an SMP wrapper like 
	tztk.)

See http://www.highprogrammer.com/alan/games/video/minecraft/Minecraft-Client.html for more information.