Hello
--- Question ---
How to create a biome that is consistently rare?
I am wondering, is the humidity and heat in the map generated pseudo-randomly - similar across maps, but with variations? Or is it consistent, but (depending on an additional variable), potentially wildly different even on a same seed and mapgen?
I confess to being mighty confused as to how to create a biome with a reliable/predictable frequency of appearance...
--- Context ---
We are trying to add a new biome such that it be rare, but we're having problems defining a good heuristic...
I did a run on a test server with the new biome at heat 55 humidity 10 and altitudes 110-180 - this test server uses the same seed and mapgen and mods as the live server, and it was indeed rare as had been intended. I found a small one and noted its coordinates.
So we added this to the live server and did a flyaround...... and found a super-massive one that extended for a good few dozen mapblocks in all directions...!
Returning to the test server, and going to those coordinates, we didn't find any such massive biome...
I studied the ethereal biomes a little and noted that rarer biomes are bunched together whereas common ones are not too ex-centered and don't have too many close neighbours... so far so good.
http://picbin.org/src/1305So I was wondering, if I create a general "CustomBiome-neutral" with heat/humidity/altitudes = { 55 , 10, [110,180] }
and then create a second CustomBiome-special with heat/humidity/altitudes = { 55 , 10, [170,170] } (note the equal altitude in this one)
would this mean that my "neutral" biome would be more likely to appear, and the "special" biome would only have one chance in N of being embedded in the neutral biome....?