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BlockCompanion

BlockCompanion shows a schematic in your Minecraft world as ghost blocks so you can build it. It does for placing and checking a build what Litematica does, with less on screen and simpler controls.

It is the in-game companion to BlockDesigner, the Windows editor for Minecraft builds. It reads the projects and schematics BlockDesigner saves, and saves builds from the world back as .schem files BlockDesigner opens.

• Client mod for Fabric and NeoForge on Minecraft 1.21.1, 26.2 and 26.3.
• One server plugin for Paper and Spigot (1.21.1, 26.2 and 26.3) for servers without mods.
• Early development; see the plan.

Pages

• Installation: which jar to download and where it goes.
• Getting Started: first steps, the tutorial world and the keys.
• Building with BlockCompanion: ghosts, placement, layers, resources and AutoBuild.
• Server Plugin: the shared space, permissions and compatibility.
• Formats and BlockDesigner: schematic formats and the live link.
• Building from Source
• FAQ

Downloads: latest release. License: MIT.