Aetherial Structure Compatibility

Minecraft picks a structure start in its nominal chunk and builds the structure without checking the terrain around it. In a world made of separated flying islands, that can leave structures floating in empty air, split between unrelated islands, or placed underground outside any rock. The mod adapts the normal structure generation pipeline for these worlds: it samples nearby columns, groups flying-island candidates, and scores them using the size and thickness of each island, the free space available, and how far a start would have to move. When a structure start is not suitable, it is shifted horizontally or vertically onto a validated island anchor.

The mod limits itself to where structures are placed. Spacing, loot tables, biome eligibility and the set of structures stay as configured, and the nominal start chunk keeps ownership of the structure. A setting for the generation strategy decides how pieces are translated, and a global fallback setting decides whether a structure that fails validation is dropped or left at its vanilla position.

The extra terrain sampling and candidate ranking add CPU work during world generation and can noticeably slow chunk generation, especially with a large search radius or high sampling limits. The author recommends that large worlds and modpacks pre-generate the intended area with Chunky before normal play. Aetherial Structure Compatibility is compatible with C2ME YOUNG's Integrated structures and is published only for NeoForge on 1.21.1, under the MIT License, which is not open source.