Mod Details

BigBrain 1.4.0

Created by DrakiaXYZ

1.03M Downloads

SPT 4.0.7 Compatible

A library for adding extra logic layers to existing bot brains

Latest Version 1.4.0
SPT 4.0.7

Updated Oct 11, 7:31 PM

16.35 KB

Version Notes
  • Update to SPT 4.0.0
  • Thanks to Archangel!
This download is externally hosted.
Always scan for viruses.

This is a library meant for use by developers, and may be required as a dependency for some plugins. Installing it by itself will have no effect on your game, without another plugin that utilizes it.

Installation

1) Open the downloaded zip file in 7-zip

2) Select the folders in the zip file in 7-zip

3) Drag the selected folders from 7-zip into your SPT folder

Demonstration Video (Yes, it’s Quest Tracker, but the same concept applies to all of my mods, I’m not making mod-specific extraction example videos):

Install Gif

What is BigBrain

Have you ever wanted to take full control of bots, but found that patching into methods only gets you so far? BigBrain will allow you to insert your own logic layers into bot brains, at whatever priority you want, allowing you to take full control of the bots. If you’ve ever wanted to completely re-write how a bot behaves in certain circumstances, you are also able to remove original layers, so you don’t have to worry about the original BSG brains conflicting with yours.

Mod Developer Notice

Please do not bundle BigBrain directly with your plugin, link users to this mod page to download and install it alongside your plugin. This allows multiple mods to utilize it, without risk of one mod or another being bundled with an old version of BigBrain and potentially breaking things.

Documentation

Documentation is still a to-do, for now the code is the documentation.

I’ve created a test brain that re-implements the logic of the “PatrolAssault” layer, which can be found on GitHub: https://github.com/DrakiaXYZ/SPT-BrainTest

Note due to this being an almost direct re-implementation of the “PatrolAssault” layer, that was mostly used for testing that I was able to interact with all of the things required to re-implement a base logic layer, the logic may not be implemented in the most concise or best manner.

If you enjoy my work, you can feed my caffeine addiction

Version 1.4.0
Download Mod Version
SPT 4.0.7 +7 more
All Compatible SPT Versions:
4.0.7 4.0.6 4.0.5 4.0.4 4.0.3 4.0.2 4.0.1 4.0.0

16.35 KB

60.1K Downloads

  • Update to SPT 4.0.0
  • Thanks to Archangel!
Version 1.3.2
Download Mod Version
SPT 3.11.4 +4 more
All Compatible SPT Versions:
3.11.4 3.11.3 3.11.2 3.11.1 3.11.0

209.0K Downloads

This version will only work with SPT 3.11.x

* Fix exceptions when a custom layer doesn’t exist in the base node dictionary

Version 1.3.1
Download Mod Version
SPT 3.11.4 +4 more
All Compatible SPT Versions:
3.11.4 3.11.3 3.11.2 3.11.1 3.11.0

721 Downloads

This version will only work with SPT 3.11.x

Fix issue with some bots being less aggressive than expected

  • Switch to using further up the class chain for the base logic type
  • Switch to using newly publicized methods/fields for BotAgentUpdatePatch, so we can keep the code closer to the original for comparison purposes
Version 1.3.0
Download Mod Version
SPT 3.11.4 +4 more
All Compatible SPT Versions:
3.11.4 3.11.3 3.11.2 3.11.1 3.11.0

812 Downloads

This version will only work with SPT 3.11.x

Update for SPT 3.11

This version will only work with SPT 3.10.x

  • Update for SPT 3.10.0
Version 1.1.0
Download Mod Version
SPT 3.9.8 +8 more
All Compatible SPT Versions:
3.9.8 3.9.7 3.9.6 3.9.5 3.9.4 3.9.3 3.9.2 3.9.1 3.9.0

63.9K Downloads

This version will only work with SPT 3.9.x

  • Allow layers to be removed and restored during the raid. Thanks DanW!

Note that this doesn’t change anything for end users, but adds functionality useful for other mod developers

No Addons Yet

This mod doesn't have any addons yet.

huynhtiendat *

I’m on SPT 3.10.0 but BigBrain keeps failing with version errors — v1.2.0 requires 33420 and v1.1.0 requires 30626, while my client is 32197.

0 Likes

I do not offer support for outdated versions. Run SPT 4.0.x, or you’re on your own

0 Likes
mancavemike2099

Ok fixed my issue. HollywoodFX 1.8.3 is breaking this mod for me. I removed it and now all is good.

0 Likes
mancavemike2099

First thanks for making these awesome mods. However I cant seem to get it to work, just hangs on launch. When I try @RIPtide2323’s suggestion mods say it is missing this mod. I only have this mod, the hollywood gore mod and the 2 mods recommended by SAIN, but the game hangs. Any advice on how to fix is welcome

0 Likes
Walnut

You’re a pillar of the community

0 Likes
RIPtide2323

For those of you having the infinite loading If you remove the dll file for bigbrain then launch the game open up your server log and it should say which mod is missing its dependency (bigbrain). go to the mod page for each mod that relies on big brain and update them to the latest versions. Worked for me with the UNTARGH mod.

0 Likes

my spt simply doesnt see most mods including that one, also theres no “user” folder in mods that are supposed to have this folder as its shown on these instalation help videos. idk im really new to all that and need help

0 Likes

hi there i dunno if this helps at all im new too but this is the new path ive seen for mods loaction in spt 4.o and above if help s you or anyone at all SPT 4.2\SPT\user\mods hope i read you comment right

0 Likes
z3xavv

Help i have the right verison of it 1.40 for SPT 4.0.1 and when I put it in the right file and when I start SPT up it becomes a infinite loading screen

1 Like

Same here. Fresh install. Whenever I install this mod it just freezes at launch :(

0 Likes

If you are getting a freeze when installing BigBrain, you are either running the incorrect version of BigBrain for your version of SPT. Or you are running outdated mods that use BigBrain. But this issue is most likely not caused by BigBrain itself

0 Likes

I delete BigBrain and the game stops running endlessly.

0 Likes
outlaw_gaming94

this says its not the right bepx how does this get fixed

0 Likes

Then you are running the wrong version of BigBrain for the wrong version of SPT. Every version is marked with the version of SPT it is built for

1 Like
wedetki

with sain i shot bot walking in torso then he hid i was inside building and folliage covers everthing then get head-eуes

0 Likes
vietthol

I’m having a lot of trouble with bots that constantly find my location and focus their attacks on me. As soon as I engage one bot and try to loot items, other bots immediately find me, which is very disruptive. This is really frustrating and seems a bit illogical. How can I fix this?

0 Likes

BigBrain does not make any changes to bot behavior. It is a library used by other mods to implement their own bot behavior

1 Like
[deleted at 2025-10-07 08:19:58]

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