Add a way to increase the Minimum height limit of the world.

[Peregrine05]

Currently, the deepest the world can be set to is -64. Add a way to set the Minimum height limit to be deeper than the 1.18 default of -64. Minecraft supports this via datapacks, and since WorldPainter already supports increased maximum height limits with datapacks, increased minimum height limits should be easy to implement.

Related to #243.

[Captain-Chaos]

This is not as trivial as you think. The maximum build height is now flexible in the WorldPainter codebase, but the minimum build height is not. It would require significant additional work to make that as flexible, and there is very little demand for it. I'll leave this open, but I would not count on it any time soon.

[FETXU]

Heyo! This is definitely something that would help us :) Bedrock is on the verge of allowing this kind of customisation in heights in the vanilla game. Getting ahead of this as Minecraft content creators is a must for some of us. We would happily support this with pizza vouchers if it were prioritised :)

[Captain-Chaos]

Picking this up now, since it's a quite popular request. Just a heads up though: I'm working full time again so this will be happening in my free time and might take a while.

[FETXU]

Picking this up now, since it's a quite popular request. Just a heads up though: I'm working full time again so this will be happening in my free time and might take a while.

You are amazing, thank you for making some time :)

[Captain-Chaos]

I have a first working iteration. I would be grateful if everyone in here would test it. You can download the Windows 64 build here. Change the filename for other editions, or ask me for the link.

Please test whether the new configurable lower build limit works with all WorldPainter features, and also whether exporting works correctly and can be loaded in Minecraft successfully. I understand that you would like to be able to transform it to bedrock, @FETXU, so please test that as well. Also look out for missing adaptations to the new configurable lower build limit.

Let me know in here when you encounter any problems!

[FETXU]

Amazing work friend!!!

I will def be testing and will report back as soon as possible.