MINECRAFTBIBLE
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Adds recipes for potions that can spread biomes
This mod works by creating a datapack when the server loads a world which provides the crafting recipes. For that reason, the potions to spread the biomes need to be crafted at the crafting table and can't be brewed. It is written in a way that new potions can be added without modifying the mod itself.
The event that spreads the biomes looks for potions with a specific naming scheme and then spreads the corresponding biome, so you can add custom biome potions yourself if the provided ones aren't enough. It looks for the "potion_contents" nbt compound and checks the custom name of the potion. If the name ends with "_fertilizer", the prefix is converted to a biome. So to add a potion that spreads the ocean biome, you need to name the potion "ocean_fertilizer".
For examples you can look through the datapack in the assets directory of the mod.
Even though the mod is a server-only mod, it can also be installed on the client to be used in singleplayer.
The following things can be configured in the config.json:
Radius
In blocks
How the biomes are spread on the vertical axis
Possible values in the config are CYLINDER and SPHERE
If the datapack that provides the recipes should be recreated on startup
This is on by default, but can be disabled after the first start
Whether the potions can be used in each dimension
By default, potions can only spread biomes in the overworld dimension
Biomes that should not be overwritten
The names have to include the namespace, eg. "minecraft:lush_caves"
By default, biomes are spread in a 16 block radius from the bottom of the world to the top, but can't replace lush and dripstone caves. Keep in mind, since biomes are stored in 4x4x4 cubes and not for each block, the biome will not be spread perfectly centered where the potion lands.
Also, setting the radius to a number that is not divisible by 4 might not work as expected.
Every recipe is shapeless and follows the same pattern:
1x bone meal, 1x blaze powder, 1x splash potion of water and 1 item or block that represents the biome.
These are the biomes that can be spread by default: