Cobblestone Generator Tweak

Tired of your cobblestone generator always giving the same block? This mod tweaks it so generators can produce various stone types and even rare ores.

Default Generators

The mod comes with a set of ready-to-use generators so you can start right away without any configuration.

name	file
cobblestone	cobblestone.json
andesite	andesite.json
diorite	diorite.json
gravel	gravel.json
sandstone	sandstone.json
stone	stone.json
mossy cobblestone	mossy_cobblestone.json
coal ore	coal_ore.json
deepslate coal ore	coal_ore_deepslate.json
copper ore	copper_ore.json
deepslate copper ore	copper_ore_deepslate.json
lapis ore	lapis_ore.json
deepslate lapis ore	lapis_ore_deepslate.json
redstone ore	redstone_ore.json
deepslate redstone ore	redstone_ore_deepslate.json

Creating Custom Generators with Datapacks

This mod is fully datapack-driven, which means you can add your own generators without touching the code.

1. Create a datapack in your datapacks/ folder.
2. Inside, add your JSON files under: data/bettercobstgen/generator/<name>.json
3. Define the block probabilities in your JSON. Example:

   {
     "source_block_id": "minecraft:dirt",
     "generation_rules": [
       {
         "generated_block_id": "minecraft:dirt",
         "weight": 1.0
       }
     ]
   }

   • Each generator rule must define a weight.
   • The sum of all weights for a given generator must not exceed 1.0.
   • If the total is higher, the datapack will be considered invalid and ignored.
4. Reload the datapack (/reload) and your new generator is instantly available.

This way, anyone can create and share custom generators easily, without writing a single line of Java.

You can find an example datapack at the following URL:

• github.com/jtorleon-studios-team/cobblestone-generator-tweak/tree/main/example/compat_biome_o

About Weight Rules

• Each generator rule must define a weight.
• The sum of all weights for a given generator must not exceed 1.0.
• If the total is higher, the datapack will be considered invalid and ignored.

Example

{
  "source_block_id": "minecraft:dirt",
  "generation_rules": [
    {
      "generated_block_id": "minecraft:dirt",
      "weight": 0.5 // 50%
    },
    {
      "generated_block_id": "minecraft:sand",
      "weight": 0.5 // 50%
    }
  ]
}

{
  "source_block_id": "minecraft:dirt",
  "generation_rules": [
    {
      "generated_block_id": "minecraft:dirt",
      "weight": 0.5 // 50%
    },
    {
      "generated_block_id": "minecraft:sand",
      "weight": 0.25 // 25%
    },
    {
      "generated_block_id": "minecraft:stone",
      "weight": 0.25 // 25%
    }
  ]
}