Thermodynamica: High-Performance Multi-Threaded Heat Simulation

Thermodynamica is a robust, library-style mod designed to bring realistic temperature mechanics to Minecraft without the lag. It implements a sophisticated Parallel BFS (Breadth-First Search) Engine that calculates temperature diffusion across your world on separate threads, keeping your server TPS smooth even with complex thermal setups.

The "Naked" Simulation

Thermodynamica is designed as a simulation framework. Out of the box, it provides the "physics" but leaves the block definitions to you.

Note: You must install a compatible Data Pack to define your heat sources and material properties. There are 2 official datapacks:

Vanilla and create

Key Features

Threaded Performance: Heat spreading is calculated independently of the main game loop meaning low thermal TPS wont affect game TPS.

Dynamic Materials: Every block can have custom Conductivity (how fast heat moves), Transfer Rate, and Dissipation (loss to the environment).

Data Pack Driven: 100% of the block data is hot-reloadable via standard Minecraft JSONs. No Java knowledge required.

Ambient Awareness: Temperatures naturally re-equilibrate based on the biome's ambient temperature.

Easy Tooling

Included in the mods github repo is a Python-based GUI Tool (thermal_tool.py) that lets you:

Enter any block registry name.

Use visual sliders to tune thermal values.

Instantly generate or update Data Packs with a single click.

Commands

/thermodynamica status - Check active heat sources and engine health.

/thermodynamica tps - View detailed simulation profiling.