terrain mod

I'm in the process of creating a scenario and want to simulate how something like a navigable river becoming more shallow affects what kinds of ships are allowed to sail up into it. Think the reverse of oceans: A galleass or caravel can sail fully up the river, but not a destroyer or battleship...

This is just a small terrain edit that smooths the terrain, reducing the noise (pixelation). This edit also changes the default Xenofungus terrain to something a little bit different. It will also look good (within the limits of possibility and taking consideration of the limitations of the...