Functions to transform a world and run rules.

Simple functions to allow a world to be visualised.

Experimental, probably of no interest to anyone else; attempt to compute drainage on a world, assumed to have altitudes already set from a heightmap.

Allow flows of values between cells in the world.

Functions to apply a heightmap to a world.

A set of MicroWorld rules describing a simplified natural ecosystem.

Utility functions needed by MicroWorld and, specifically, in the interpretation of MicroWorld rule.

Functions to create and to print two dimensional cellular automata.