Schema Loader is a fast, server-side Fabric mod that reads .litematic files and builds them directly in your world. It is highly optimized to paste massive structures without lagging your server.

Features:

Server-Side Only: Players don't need the mod installed to see or use it.

Lag-Free Pasting: Uses a dynamic time-budgeted queue to maintain 20 TPS, even when building huge structures.

Particle Previews: Displays a bounding box outline of where the structure will be placed before confirming.

Smart Optimization: Skips placing identical blocks (like dirt on dirt) to save CPU time.

Undo System: Accidentally pasted a structure in the wrong place? Use the built-in /schema undo command to safely revert the last operation.

Rotation & Mirroring: Easily rotate (90, 180, 270 degrees) or mirror your schematics during the paste process.

Auto-Completion: Pressing Tab suggests available schematics in your folder.

Non-ASCII Support: Safely loads files with special characters.

Commands:

/schemaload : Previews the schematic at your location.

/schemaload [rotation] [mirror] : Previews the schematic at specific coordinates with optional rotation/mirror.

/schema accept : Starts building the previewed schematic.

/schema decline : Cancels the preview.

/schema undo : Undoes the last schematic placement to save your world.

/schemahelp : In-game help menu.

Installation: Place the mod into your server's mods folder. Drop your .litematic files into the schematics folder located in your server's root directory. Requires Fabric API.

[Developed with the help of artificial intelligence]