CBMultipart Rescaled

A port of CBMultipart / Forge Multipart for Minecraft 1.12.2, built for Cleanroom with Java 25 and Scala 3.

It lets multiple functional parts share a single block space. This includes microblocks and multipart versions of vanilla torches, levers and buttons.

Changes

• Rebuilt for Cleanroom, Java 25 and Scala 3.
• Added optional Demonica support so shaders can identify each microblock's original material.
• Fixed Scala 3 trait handling, including nested traits, field initialization and lazy values.
• Fixed scheduled ticks after tile replacement and chunk loading, including worlds with missing part types.
• Fixed block conversion, redstone connections and hopper access to inventory parts.
• Fixed part and material synchronization, including singleplayer registry handling and outdated client block data.
• Preserved missing material names in saves, item drops and pick-block results. Missing-material placeholders cannot be used in recipes.
• Fixed crashes involving detached parts and empty multipart tiles, and released world references after rendering.
• Includes fixes adapted from GTNH's ForgeMultipart fork and regression tests.

Requirements

• Java 25 (OpenJDK)
• Cleanroom 0.7.14 or newer
• Scalar 3.9.0 or newer within the 3.9.x series
• CodeChicken Lib CRE 3.3.10 or newer

Optional shader integration: Demonica.

For developers

Available from Sumire Labs Maven:

codechicken:CBMultipart-Rescaled:<version>

Credits

• TheCBProject/CBMultipart: Original CBMultipart / Forge Multipart code.
• kappa-maintainer/CBMultipart: Cleanroom and Scala 3 port.
• ACGaming/CBMultipart: Control-key handler memory leak fix.
• GTNewHorizons/ForgeMultipart: Multipart and microblock bug fixes adapted for Minecraft 1.12.2.

License

LGPL-2.1-or-later