arcreactorlocator
Arc Reactor Locator is a Fabric 1.21.11 utility mod that adds a special compass-like locator used to find Arc Reactor structures from the Avengers mod. Right-click to search for the nearest valid structure, then follow the on-screen direction arrow ui
About this Mod
Description
Arc Reactor Locator is a lightweight companion mod for Fabric 1.21.11 designed to work with the Avengers mod.
It adds a locator item that helps players find the Arc Reactor Core Room structure in the Overworld without using commands. After locating a valid structure, the mod shows a simple on-screen direction indicator and updates the distance in real time while the locator is held.
To keep progression fair, once the important structure block is mined, that structure is marked as completed and will no longer be located again. This works globally for the world, so completed locations stay completed for all players.
Features
Right-click locator item to search for the nearest Arc Reactor structure
Live distance update while holding the item
Direction arrow HUD for easier navigation
Overworld-only tracking
Skips completed structures
Works in both singleplayer and multiplayer
Designed as a required companion addon for the Avengers mod
Important Notes
Requires the Avengers mod
Made for Fabric 1.21.11
Targets the structure: avengersmod:arc_reactor_core_room
Completed structure detection is based on mining: avengersmod:arc_reactor_core_ore
for contact send mail to [email protected]
Available Versions
How to Install arcreactorlocator on Your Server
Order Server
Order a Minecraft Java server with at least 4 GB RAM (6 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.11).
Install Mod
Open the mod browser in the dashboard and search for "arcreactorlocator". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.11
Server-side
✓ RequiredRecommended RAM
6 GB(min. 4 GB)Frequently Asked Questions
arcreactorlocator server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 4 GB RAM is allocated and the loader matches the mod version (1.21.11). You can switch loaders with one click in the panel.
Is arcreactorlocator compatible with fabric?
arcreactorlocator officially supports fabric for Minecraft 1.21.11. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with arcreactorlocator – how to optimize performance?
Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if arcreactorlocator consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Install arcreactorlocator with just one click on your server.