Structure Layout Optimizer

The mod targets the layout step of Jigsaw structure generation. Intersection checks between pieces normally compare every vertex of each shape, so the cost climbs as a recursive structure gains pieces. The mod swaps in a container that stores pieces in a spatial tree and checks only the pieces close to a candidate bounding box, which keeps the work from growing with the whole structure.

The mod also skips checks for child rigid pieces when a Jigsaw Block is fully enclosed, simplifies joint data handling so it no longer converts values to an enum on each match, and reorders some logic to run less often. Structures with very large numbers of Jigsaw Blocks gain the most, since every block is compared against the blocks of the other pieces.

It is server-side only, so players join without installing it. It is open source under the MIT License and needs Fabric API and Resourceful Config. Files are published for Fabric, Forge and NeoForge, covering game versions 1.16.1 – 26.3 with 20 release versions, and the latest builds target 26.3 and 1.20.1.