Pipboy lighting detection and repair - F4SE

Fixed Pip-Boy light actually affecting stealth. If you shine like a diamond, enemies will notice now!

Original address:

Prefix:

Address Library for F4SE Plugins：

Updated on September 22nd:

Version 1.1.1

Overview

->Increase NG compatibility

-> This mod now requires a runtime database

~~### The AE moderator file (supports the anniversary version) and the OG moderator file (supports the 163 version) have been uploaded together, and you can choose one of the two to install according to your own game version~~

----

If you're looking for direct help, information, patches, unreleased mods, pre-release mod updates, or just want to communicate and share pictures and videos of your adventures, feel free to join us!

Welcome to support me and get more wonderful moderators!

Introduction: In the original "Fallout 4", Pip-Boy's light had little effect on stealth. This glow is represented visually, but it does not properly increase player visibility in the detection formula.

This creates a break in immersion. You can stand in a dark room with bright lights and enemies will still react as if you were hiding in the shadows.

This mod fixes engine level issues. Any active personal light source will now affect your visibility to the AI's eyes. Includes Pip-Boy lights, weapon-mounted flashlights, and helmet lights or tactical lighting equipment.

When one of these lights is activated, your effective light level is correctly reflected by the AI's detection calculations. Bright light makes you easier to spot. Darkness keeps you hidden. The system finally behaves in a consistent and trustworthy way.

The goal is not to make stealth artificially harder, but to restore reasonable lighting behavior and reliable AI perception for all player lights.

Differences from other module implementations

Some mods attempt to work around this behavior via Papyrus scripts by externally adjusting detection values ​​or reacting after specific events.

This approach works on the surface, but doesn't change how the game internally evaluates light in the actual detection formula.

This module runs directly at the engine level and integrates light sources into AI raw calculations. The player's light exposure becomes a natural factor in detection decisions, alongside distance, movement, line of sight, and other stealth factors.

The system no longer simulates visibility changes from the outside, but inputs accurate light information into the core logic to determine whether you are seen. This results in more consistent behavior, better compatibility, and a solution that naturally extends to all dependency detection formula mechanisms.

Install

Install the mod using your favorite mod manager.

Available game versions: OG (1.10.163) and AE (latest) anytime

uninstall

Any time.