THE MOD IS OUTDATED  

It is now licensed under MIT, so you may port or rehost this mod. I'm not going to provide source code though, this honestly needs a rebuild from the groound up. Happy coding ~~  

Shared Structures

Generate custom prefab structures in existing biomes/zones using vanilla-style placement patterns.

What it does

• Loads structure entries from your asset packs
• Places prefabs during world generation using pattern rules (grid/noise/height/parent/masks)
• Supports entities and block spawners embedded in prefabs

How to add structuresCreate JSON config files in your pack at:

• Server/WorldGen/SharedStructures/Prefabs/*.json

Each file contains an array of entries.

Fields

• Id: unique name for the entry
• Prefab: prefab asset id(s)
• Weight: weights matching the Prefab list
• BiomeMask: wildcard match against the biome id
• ZoneMask: wildcard match against the zone id
• Pattern: either { "File": "A.B.C" } or an inline pattern object

Notes

• Patterns are resolved relative to the worldgen data folder. A file reference A.B.C loads A/B/C.json.
• Prefabs should be stored under Server/Prefabs/ in your pack.

Example:

[ { "Id": "castlearena", "Prefab": ["YourPack.CastleArena"], "Weight": [1.0], "BiomeMask": ["*Plains*"], "ZoneMask": ["Zone1_Tier1"], "Pattern": { "File": "World.Default.Zones.Pattern_Monuments"} } ]