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Magmatic Chamber (Melter) Recipe Registration

The Magmatic Chamber (internally called Melter) supports dynamic liquid recipe registration using ScriptEvents.

It converts solid items into liquids measured in millibuckets (mB).

Sending the ScriptEvent​

import { system, world } from "@minecraft/server";

const newRecipes = {
  "minecraft:ice": { liquid: "water", amount: 1000 }
};

world.afterEvents.worldLoad.subscribe(() => {
  system.sendScriptEvent(
    "utilitycraft:register_melter_recipe",
    JSON.stringify(newRecipes)
  );
});

Payload Format​

The payload must be an object where:

  • Key → Input item identifier
  • Value → Liquid recipe definition

Example:

{
  "minecraft:cobblestone": { "liquid": "lava", "amount": 250 },
  "minecraft:ice": { "liquid": "water", "amount": 1000 }
}

Recipe Object Fields​

Each Melter recipe supports:

  • liquid (required)
    Resulting liquid type (e.g. "lava", "water").

  • amount (required)
    Produced liquid amount in millibuckets (mB).

Behavior​

  • New recipes are added automatically.
  • Existing recipes with the same input are replaced.
  • Invalid entries are ignored safely.
  • Recipes are registered at runtime.
  • Liquid amount is added to the machine's internal tank.

Example Recipe Object​

const recipes = {
  "minecraft:obsidian": {
    liquid: "lava",
    amount: 500
  },
  "minecraft:packed_ice": {
    liquid: "water",
    amount: 1000
  }
};

Notes​

  • The Magmatic Chamber must have available tank capacity to store produced liquid.
  • If the tank is full, processing will stop.
  • Energy consumption is handled by the machine configuration.