That sounds great. I would love to see more of your work. The paper was really nicely done and I have enjoyed going through it and understanding how you finally came to the new technique. The environment in Tribal Trouble really looks fantastic.
Given that you haven't seen any artificats, maybe I have made a mistake.
Here is what I am doing:
standard Von Neumann neighborhood (not rotated)
in-place modifications to the heightmap
256x256 heightmap (which causes other aliasing issues)
T = 0.0625 (T is muliplied by the range of the heightmap to get the height threshold)
iterations = 50
Here is a screenshot of the issue (please excuse the textures, they are programmer art):
http://www.tormentedgames.com/images/pr ... lSpike.png
And in Figure 31 I thought I was seeing a similar artifact, here is what I mean:
Thanks again for your help.