Brain

Overview

Brain is the core AI controller for mobs in Minecraft 1.19+, replacing the older Goal system. It provides more advanced behavior management through Memory, Sensors, and Tasks.

Mechanism Description

• Core component of mob AI, managing memory (Memory), sensory (Sensors), and behavior tasks (Tasks)
• Memory: Stores information about the entity, such as nearest player, home position, mood, etc.
• Sensors: Collect information from the environment and update memory
• Tasks: Execute behaviors based on memory and current state

Common Methods

// Get Brain
const brain = mob.getBrain();

// Memory Operations
brain.setMemory("minecraft:last_hurt_by", player);
const lastHurtBy = brain.getMemory("minecraft:last_hurt_by");

// Check memory exists
if (brain.hasMemory("minecraft:visible_targets")) {
    /* ... */
}

Notes

• Brain is available in Minecraft 1.19+
• For 1.18 and earlier, use Goal system instead
• Memory types vary by mob type