[lch]

Re-inventing the wheel, take #122. :P No, don't take this as criticism. It's just that an alternative way to generate random maps for Dom3 tends to show up somewhere and boils for some time, until it grows stale and another attempt takes its place at a later time. Unfortunately there's no concerted effort to get somewhere. Although this tutorial doesn't contain any new concepts (generate perlin noise / heightfield, colorize) it's good that you're giving explicit instructions how to achieve the effect.