BuildingBook

Multi Schematic Previews and Build Queue

• Multiple schematics can now stay open at the same time. All open previews render together in the world, while the active session handles tracking, keybinds, and building.
• Added /bb previews, /bb use <name>, and /bb close <name> to list, switch between, and close open preview sessions. Completing or cancelling a build now closes only the active session.
• Added a build playlist queue for Building and Instant modes: when an automatic build finishes, the next queued session starts automatically if already locked in place, or becomes active so you can position and lock it.

Multiplayer Server Sharing and Share Picker

• Blueprint sharing now works on dedicated Fabric multiplayer servers in addition to LAN worlds. Installing the same mod jar on a Fabric server registers a lightweight packet relay so players with BuildingBook can share blueprints with each other.
• Added a Share Picker screen when more than one preview is open, letting you choose a single open preview to send or click All to share every open preview at once.

Connected Blocks and Outline Rendering

• Fences, walls, glass panes, iron bars, and similar horizontal connectors now recalculate their connection states from neighboring schematic blocks on load and when receiving shared blueprints, so previews connect properly and match vanilla block states once placed.
• Offset block outlines slightly outside block faces so outline edges no longer flicker against translucent glass shells or block models.

Version Tolerant and Faster Schematic Loading

• Renamed blocks across Minecraft versions (such as grass to short_grass or chain to iron_chain) are remapped automatically on load.
• Unknown blocks are now skipped with a chat and log count instead of rejecting the entire schematic file, unknown block properties are ignored safely, and newer Litematica or Sponge format versions load on a best effort basis.
• Reduced schematic loading overhead by skipping extra map copies at 0 degree rotation, pre sizing block maps, and simplifying double block door normalization.

Interface, Controls, and Mode Rules

• Updated the settings screen layout to prevent footer button overlap and added a Hide Building toggle and a Cancel Preview button.
• Added a bindable Cancel Preview / Blueprint key under Options > Controls > Key Binds (unbound by default, keeping Sneak + Left Click as the fallback).
• Disabled Building and Instant mode buttons in Survival and on multiplayer servers without Creative access, keeping manual Blueprint mode available everywhere.