SmartBrainLib (Forge/Fabric/Quilt)
Modby Scimiguy
A smarter brain system for Minecraft
Type
Mod
CurseForge Downloads
82,183,841
CurseForge ID
Modrinth Downloads
6,915,083
Modrinth ID
Last Updated
Nov 7, 2026
Description
A brain library for Minecraft, making the brain system easier to use and manage.
NOTE: This is a mod library. It does not do anything on its own unless you are a developer utilising it.
What is this?
The brain system in Minecraft is an almost cryptic new entity AI system that Mojang introduced to handle more complex mobs, and allow for more advanced entity handling.
Unfortunately Mojang's implementation is lacking, and overly complex.
Additionally, it's also done in a rather inefficient way, which means that overall the system is not worth using in place of the existing goals system.
This library aims to overhaul the brain system, making it actually usable, and configurable.
Note however, that the existing goal system will still be simpler at face value - the brain system is intended for more complex interactions, but it can also be fun to experiment with.
So what does SmartBrainLib do?
SBL is a multi-facet approach to the brain system, and will continue to expand and improve as I use it.
Here are its main features:
Auto-handles memory types
Don't worry about having to work out which memory modules to register for your entity.
Dynamic sensors
Sensors can now be dynamically configured and handled. This allows for much more advanced and flexible sensors
Advanced behaviours
Utilise built-in, or create new behaviours based on an extensible behaviour class, which builds in callbacks, predication, cooldowns, and more.
Runtime-safe behaviour modification
Add, remove, and modify behaviours dynamically from an existing entity.
Optimisation
SBL replaces almost the entirety of the vanilla brain system's functions, using high-efficiency functions to remove the inefficiencies in as many areas as possible of the brain. Done right, an SBL entity could be even more efficient than one using goals!
Additional sensors, behaviours, and memory types
SBL builds in additional modules for use in any entity, with more to come over time.
How do I use it?
The library is documented on its wiki page: https://github.com/Tslat/SmartBrainLib/wiki
If you have issues or want to contribute, please jump on the GitHub page and make your voice heard
Compatibility
Mod Loaders
Game Versions
Recommended Gear
AffiliateHardware and extras that pair well with this mod.
As an Amazon Associate I earn from qualifying purchases.
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