Fixes oil generation depth for The Factory Must Grow.
By default, oil deposits generate at Y = -64, which causes them to appear in the middle of deep oceans or at incorrect levels in custom worldgen.
This datapack overrides the placement of tfmg:oil_deposit and forces it to generate at a deeper level (configurable in the file), making oil spawn where it actually makes sense.
Works with existing worlds (new chunks only).
MAKE SURE TO CHANGE THE VALUE IN THE DATAPACK TO FIT YOUR WORLD! Default is -140
I am using this in my modpack with 1.21.1 and TFMG 1.2.0, but if you have any issues with other versions let me know.