
Mob Brain Additions
This API can be used by other mods to give additional functionality to mobs that use the brain system.
About this Mod
Mob Brain Additions
This API can be used by other mods to give additional functionality to mobs that use the brain system. It depends on the SmartBrainLib mod, which implements an optimised and expanded version of the vanilla brain system.
Current features
Blocks
- a new (operator only) "Path Finding Node" block, which can save a map of strings and block positions
Memory Types
- "mob_brain_additions:is_near_home", a unit memory type
Sensor Types
- "mob_brain_additions:is_near_home", a sensor type that sets the "mob_brain_additions:is_near_home" memory type when the entity is within a configurable radius of its home position. If the entity is further away the "mob_brain_additions:is_near_home" memory type is removed, along with the vanilla walk_target and attack_target memory types
- "mob_brain_additions:update_home_from_path_finding_block", a sensor type that sets home position of an entity according to a nearby "Path Finding Node Block". The Path Finding Node Block has block positions mapped to strings. If the entity is an instance of the "TracksPathFindingNodes" interface, it has a "trackedPathFindingNodeId", which is used to determine which of the block positions of the node block is set aas its new home position.
Behaviours
- the "SetWalkTargetToHomePosition" behaviour sets the look_target and walk_target memories to the home position of the entity
- the "TargetOrRetaliateWhenNearHome" behaviour works very similar to the existing "TargetOrRetaliate" behaviour, but it only runs when the entity has the "mob_brain_additions:is_near_home" memory. Additionally, the target has to be near the entities home position. The maximum distance is configurable.
Available Versions
How to Install Mob Brain Additions on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.1).
Install Mod
Open the mod browser in the dashboard and search for "Mob Brain Additions". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.1
Server-side
✗ UnsupportedRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Mob Brain Additions server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.
Is Mob Brain Additions compatible with fabric?
Mob Brain Additions officially supports fabric for Minecraft 1.21.1. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Mob Brain Additions – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Mob Brain Additions consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Rent Modded Server
Install Mob Brain Additions with just one click on your server.