Null Field Emitters

Null Field Emitters adds three placeable field generators that prevent Sophisticated Backpacks magnet upgrades from collecting dropped items and experience within a configurable area.

The mod is designed for workshops, storage rooms, farms, Create factories, public server areas, and any other location where player magnets interfere with item transport or automation.

Features

• Three progressively larger field emitters
• Block-aligned cubical protection areas
• Configurable range for every tier
• In-world range visualization
• Full Sophisticated Backpacks magnet compatibility
• Normal item pickup remains functional
• Hoppers, belts, funnels, chutes, importers, and other automation remain functional
• Recipes appear in the vanilla recipe book
• Recipes are automatically visible in JEI when JEI is installed
• All emitters appear in the Functional Blocks creative tab
• Works in single-player and on dedicated servers

Emitters

The emitter itself occupies the center block. A range of 16 therefore protects the emitter block plus 16 blocks in every direction along the X, Y, and Z axes.

The complete cubical area is protected, including its corners.

Range Display

Right-click an emitter to display the boundary of its active field.

The display includes:

• The outer edges of the protected cube
• Center guide lines
• Boundary markers aligned with blocks
• A distinct color for each emitter tier

Sneak-right-click the emitter to hide the range display.

The preview is client-side and does not change the field itself.

Configuration

The default ranges can be changed independently through the Forge server configuration.

Configuration file:

<world folder>/serverconfig/nullfield-server.toml

Default settings:

[ranges]
nullFieldEmitter = 16
resonantNullFieldEmitter = 64
quantumNullFieldEmitter = 256

Each range can be set from 1 to 4096 blocks.

Existing placed emitters use the current configured value, so they do not need to be broken and replaced after changing the configuration.

Forge-compatible configuration menu mods may also expose these settings in-game.

Recipes

The recipes use only vanilla Minecraft and Sophisticated Backpacks components.

Null Field Emitter

Requires:

• 4 Magnet Upgrades
• 2 Eyes of Ender
• 1 Upgrade Base
• 1 Obsidian
• 1 Redstone Block

Resonant Null Field Emitter

Requires:

• 4 Advanced Magnet Upgrades
• 2 Amethyst Blocks
• 2 Diamonds
• 1 Null Field Emitter

Quantum Null Field Emitter

Requires:

• 4 Resonant Null Field Emitters
• 4 Eyes of Ender
• 1 Diamond

Install JEI to view the exact shaped recipes in-game, or unlock them through the vanilla recipe book.

What the Field Blocks

Null Field Emitters stop remote magnet collection performed through Sophisticated Core.

They do not disable:

• Normal player pickup when walking over an item
• Hoppers
• Create belts
• Funnels
• Chutes
• Mechanical arms
• Refined Storage importers
• Other ordinary item transportation systems

This allows automation to continue working while preventing a nearby player's backpack magnet from stealing items.

Requirements

• Minecraft 1.20.1
• Minecraft Forge
• Sophisticated Core
• Sophisticated Backpacks

Both the client and server must have the mod and its required dependencies installed.

Optional Compatibility

• Just Enough Items displays all crafting recipes automatically.
• Forge config-screen mods can expose the server configuration through an in-game interface.

Neither is required.

Installation

1. Install Forge for Minecraft 1.20.1.
2. Install Sophisticated Core.
3. Install Sophisticated Backpacks.
4. Place Null Field Emitters in the mods folder.
5. Install the same mod version on the server and all connecting clients.

Modpack Use

You may include Null Field Emitters in public or private modpacks, provided the mod is distributed through its official CurseForge project or another officially approved distribution page.

Default ranges may be changed to fit the progression and scale of your modpack.

Issues and Feedback

When reporting a problem, include:

• Minecraft version
• Forge version
• Null Field Emitters version
• Sophisticated Core version
• Sophisticated Backpacks version
• The latest log or crash report
• Steps needed to reproduce the issue

Null Field Emitters was created to solve a specific automation problem: magnets are useful almost everywhere, but sometimes dropped items need to stay exactly where they are.