Alterguardian Phase2Brain

Based on game build 714014 | Last updated: 2026-02-27

Overview

This brain component defines the AI behavior for the Alterguardian during Phase 2 of its encounter. It uses a behavior tree (BT) to orchestrate high-level decision-making, combining ChaseAndAttack, FaceEntity, and Wander behaviors. The brain ensures the boss rotates toward the nearest valid player within range, pursues and attacks targets aggressively, and periodically wanders near its spawn point when no valid targets are present. It integrates with the knownlocations component to remember and reference its initial position as a home point for wandering.

Dependencies & Tags

• Components used: knownlocations (accessed via inst.components.knownlocations)
• Tags: The brain references the "notarget" tag when evaluating potential targets but does not add or remove it itself.

Properties

No public instance properties are initialized in the constructor beyond inherited brain state. The behavior tree (self.bt) is assigned during OnStart.

Main Functions

OnStart()

• Description: Initializes and assigns the behavior tree root node. This sets up a hierarchical priority structure: the boss performs ChaseAndAttack if a target is within range, otherwise orients itself toward the closest valid player (FaceEntity), and falls back to Wander near its spawn point if neither condition applies. A conditional wrapper (WhileNode) prevents all these behaviors from running while the entity is in the "spin" state tag (i.e., during spin attacks).
• Parameters: None.
• Returns: None.

OnInitializationComplete()

• Description: Records the Alterguardian's current position as "spawnpoint" in its knownlocations component. This location is later used by the Wander behavior as its home point.
• Parameters: None.
• Returns: None.

Events & Listeners

No explicit event listeners are registered in this component. The behavior tree handles state transitions internally and does not rely on custom event firing or listening in this class.