## **NOTICE** [MC-249136 appears to have been fixed](https://bugs.mojang.com/browse/MC-249136) in newer versions of Minecraft! As such, I've decided not to update this mod for 1.20.5-onwards. If you still encounter problems with treasure maps in 1.20.5+, please [create an issue](https://gitlab.com/horrific-tweaks/MC-249136/-/issues/new) to let me know!

# MC-249136 Fix [![Requires Fabric API](https://cdn.jsdelivr.net/npm/@intergrav/devins-badges@2/assets/cozy/requires/fabric-api_vector.svg)](https://modrinth.com/mod/fabric-api) [![Available on GitLab](https://cdn.jsdelivr.net/npm/@intergrav/devins-badges@2/assets/cozy/available/gitlab_vector.svg)](https://gitlab.com/horrific-tweaks/MC-249136) [![Available on Modrinth](https://cdn.jsdelivr.net/npm/@intergrav/devins-badges@2/assets/cozy/available/modrinth_vector.svg)](https://modrinth.com/mod/mc-249136-fix) This mod implements a minimal hacky fix for [MC-249136](https://bugs.mojang.com/browse/MC-249136), a significant server lag spike that occurs when locating buried treasure structures for shipwreck loot. To avoid this lag spike, structure location is moved into a separate thread that does not block the server tick loop. This does nothing to improve the structure location performance, but it does at least prevent it from significantly impeding gameplay. ![An empty Minecraft buried treasure map, with the text "Loading" in the center](https://gitlab.com/horrific-tweaks/MC-249136/-/raw/main/screenshot.png?v=1) ## Configuration The map "loading" images can be customized by placing `128x128` PNG files in `/config/mc249136/map_loading.png` and `/config/mc249136/map_not_found.png`. For performance reasons, these images will draw all pixels as black unless they are fully transparent (i.e. `rgba(0,0,0,0)`). Minecraft's map color palette is difficult and expensive to calculate - so this mod literally just does an `if (rgb != 0)` to draw the image. Known issues: - This mod does not handle state persistence, and only updates loaded maps once they are inside a player's inventory. This means that it is possible to prevent a treasure map from loading by breaking the chest, leaving it in item entity form, and then restarting the server.

fennifith

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