Allow anonymous analytics?

Our cookieless analytics show us which features get used and store nothing on your device. We never sell your data or use it for advertising.

Privacy choices

Choose what ModDex may collect. You can change this anytime from Privacy choices in the footer.

Read the full privacy policy

Strictly necessary Required for the site to work: login sessions, security tokens, and abuse prevention. Always on and cannot be disabled. Always on
Analytics Cookieless analytics through PostHog's EU servers, used only to see which features get used. Nothing is stored on your device, and the anonymous visitor ID resets every day. Needs your consent because usage data goes to a third party. Never used for advertising or profiling. Off by default in the EU and UK.

AE2LevelEmitterFix

Quick rating

Community listing page, reviews may not be monitored by the author.

How listings work Are you the author?

AE2LevelEmitterFix

By archengius

No reviews yet

Fixes AE2 level emitters dropping neighbour updates on chunk unload, causing neighbour blocks to get stuck with wrong redstone level.

Mod Loaders
Minecraft
Shockbyte server hosting: 35% off your first server with code MODDEX35 (opens in a new tab)

About

Description

# AE2 Level Emitter Fix

Fixes a long-standing Applied Energistics 2 bug: after a chunk unload, a world reload or a server restart, a **Level Emitter can get stuck sending the wrong redstone signal**. The emitter itself looks correct (its state and particles are right), but the blocks next to it still act on the old signal.

## The problem

When an ME Level Emitter turns on or off, AE2 doesn't notify the neighboring blocks right away. It queues the update for the next tick. If the chunk unloads or saves in that short window (you walk away, the server shuts down, the world closes), the queued update is thrown away, but the emitter has already saved its new state.

After the next load, the emitter believes it already told its neighbors, so it never sends the update again. Whatever it controls stays in the old state until soma block update.

### What you'd see in game

- **A machine that won't start or won't stop.** For example, a GregTech machine with a Machine Controller cover keeps running after the item stock is full, or never starts when the stock runs low. Opening the cover's GUI or breaking and replacing a block "fixes" it until it happens again.
- **Redstone that ignores the emitter.** A lamp, piston or redstone line next to the emitter keeps showing the old
signal even though the emitter shows the rig
- **Autocrafting or stocking setups that break randomly** after a server restart or after you come back to your base, with no visible cause.

## What this mod does

- Tracks whether each Level Emitter has a neighbor update that was queued but not delivered yet.
- If the emitter is saved while an update is still pending, it stores that fact in the emitter's data.
- When the emitter loads again, it re-sends the update, so neighboring blocks always end up with the correct signal.

This applies to every emitter built on AE2's Level Emitter**, the **Energy LevelEmitter**, and addon emitters that extend them.

## Requirements

- Minecraft 1.20.1
- Forge 47+
- Applied Energistics 2 (15.x)

Source and issue tracker: https://github.com/Archengius/AE2LevelEmitterFix