Molecules [NeoForge]

Molecules reads data files that describe how each GregTech material should be drawn. Organic compounds and alloys are the main targets, and the drawings are generated on the client from those definitions. Each atom's position is stored either as x and y coordinates or as u and v coordinates, and the unit vectors for those axes are tilted 30 degrees. Most organic compounds are encoded with u and v coordinates, because their skeletal structures follow a hexagonal grid. The mod does not require the benzene component to draw benzene, since the drawing is built from the atom layout alone.

Alloys use the same approach, stored as resource pack files under the alloys folder and matched to their GregTech material ID. For the simplest case, a material's composition is computed automatically through GregTech's material composition system, so no extra work is needed. When impurities or a specific composition must be shown, the author can declare components manually in a simple schema. The mod is open source under the GNU Lesser General Public License v3.0 or later, and its source code and issue tracker are public. Files are published for NeoForge 1.21.1 – 1.21.11, with the 0.0.1-ALPHA release covering 1.21.11.