Collect Emerald

An emerald placed in an item frame acts as a collector. It picks up items lying inside a cube of 33 blocks per side centered on the frame. A frame mounted on a storage container sends collected items into that container, and an empty container receives them as well. Items are gathered only into containers of a type the frame is already mounted on, so the mod suits item-collection setups built around storage.

Several collectors can cover the same area. When more than one valid container is in range, each item goes to the nearest collector, and items spread across several entities are divided evenly between them. Collectors that are not tied to any container also exist and take the item first collected. The author notes that the mod can power automatic item sorting in early game storage systems and can be applied to item collection in trap designs. It is compatible with Large Barrel and with the carpet-tis-addition mod.

Collect Emerald runs on the server alone, so players join without installing it. It is published for Fabric only, across 12 release versions 1.21 – 1.21.11, with 1.0 for 1.21.11 as the latest file. The code is open source under the MIT License, and public links exist for the source code and the issue tracker.