Map: Height Maps

[dmnt]

I'll try and look into this when I get a bit of free time on my hands. The biggest issue with map generation is that I have to work "in the dark", so not knowing the actual way how the map binaries are built. And reverse engineering it is slow and cumbersome way of figuring it out.

I'll check what I can do with the beach map building. I'll update my SPMBT version today and the backend already supports things like setting the level offset: I could tweak it to always keep water as 0 and then land would be 1-3 at the lowest level if that is enough to create the land/sea boundary properly.