[SC]StructureCraft

The mod exports multi-block structures built in the world to files that other machine mods can read. A player marks two corner points, then runs a command that names the target format and the controller block. The command writes the structure, including block states, NBT data and container contents. The exported data covers custom multi-block machines from CustomMachinery, Fork GTM, GregTechCEu Modern and Masterful Machinery, which use an NBT structure format with the front on the Z axis.

The mod is built for pack makers and modders who build large machines in the world and then need them as data for a machine mod. Its wireframe rendering mode draws the selection border, and the border can be set to a single square outline or to a full multi-block outline. The GregTechCEu example in the author notes shows the command sequence step by step, from choosing two points to naming the controller and the output file.

The mod is for Forge only, with one build for 1.20.1. It is client-side only, so the server does not need it, and it is released under All rights reserved, so it is not open source.