The Blocks World is a classic and famous toy domain in Artificial Intelligence.
Starting from an initial configuration of blocks the aim is to move blocks to a new goal configuration. Blocks are instantaneously moved by means of a virtual gripper. A block can only be moved if there is no other block sitting on top of it. A block can always be moved to the table.
Releases can be found here and include the Blocks World environment, a random generator for Block's World configurations, and a manual for the environment.
Releases can also be found in eishub's maven repository here.
<repository>
<id>eishub-mvn-repo</id>
<url>https://raw.github.com/eishub/mvn-repo/master</url>
</repository>
<dependency>
<groupId>eishub</groupId>
<artifactId>blocksworld</artifactId>
<version>1.3.0</version>
</dependency>