If I am correct, the world height is set via the world file format(Anvil) and has a max build height of 256, but I could be wrong. So, I would assume if you wanted to change it then you'd have to a modify the Anvil file format, or b create your own file format and try to make it compatible with the vanilla Minecraft file format.
I don't know what you mean, but
this.biome.getRandomWorldGenForTrees(this.randomGenerator)
leads to net.minecraft.world.biome.BiomeGenBase.getRandomWorldGenForTrees(Random par1Random)
After stepping into the break point it led to this part of MysticBiomeGenBase.java:
and here is MysticWorldGenTrees.java:
http://paste.ubuntu.com/5585309/
Hello. I have created a new dimension, but when I try to travel to it I get an error. Please help and thanks in advance.
Error:
http://paste.ubuntu.com/5585271/
MysticBiomeDecorator.java:
http://paste.ubuntu.com/5585279/
This may not be needed, but for my creative tab I had to also add another method, which is as follows.
LanguageRegistry.instance().addStringLocalization("itemGroup.TabName", "en_US", "Name Displayed In-game");
I recently made my own dimension and there are random dark spots around the world, but when I build on them or destroy a block that has black on it all the black disappears. My question is, is this a problem with my dimension or is it a problem with minecraft itself?
I could sit here and type out an explanation for how you could achieve this, but I decided that I'd just google for an example/tutorial. From my search I found an open source mod that added a new dimension called "Inverted World" and I think you should study what the developer of it did and experiment yourself with it possibly. Here is the link https://github.com/tuyapin/InvertedWorld . Now I'm not saying to take the mod and call it your own, but take advantage of it being open source and study it.