Daywalker2Brain

Based on game build 714004 | Last updated: 2026-03-03

Overview

Daywalker2Brain is the behavior tree-based AI controller for the Daywalker 2 boss entity. It orchestrates complex combat behaviors including targeting enemies, dodging by rummaging through junk loot, stalk-chasing during cooldown, and executing tackle attacks when conditions are met. It interacts closely with the combat, entitytracker, rooted, and stuckdetection components to dynamically select and transition between high-level behaviors such as Rummage, Stalking, Chasing, and Wander, based on game state, cooldown timers, and environmental factors.

Usage example

local inst = CreateEntity()
inst:AddTag("daywalker2")
inst:AddComponent("combat")
inst:AddComponent("entitytracker")
inst:AddComponent("stuckdetection")
inst:AddComponent("rooted")
inst.brain = Daywalker2Brain(inst)
inst.brain:OnStart()

Dependencies & tags

Components used: combat, entitytracker, stuckdetection, rooted
Tags: Adds daywalker2; checks state tags: jumping, busy, stalking.

Properties

Property	Type	Default Value	Description
lastjunk	Entity or nil	nil	Previously tracked junk entity (used for caching).
_thieflevel	number	nil	Internal counter for thief warning state synchronization.
cachedrummage	boolean	false	Cached rummage decision used to persist rummage state across frames.
bt	BT	nil	Behavior tree instance (initialized in OnStart).

Main functions

OnStart()

• Description: Initializes the behavior tree with a priority-rooted hierarchy that evaluates state-dependent conditions (e.g., ShouldRummage, ShouldStalk, ShouldChase) and executes corresponding behavior nodes (e.g., Leash, LeashAndAvoid, ChaseAndAttackAndAvoid, Wander). Sets up listeners and initial behavior logic.
• Parameters: None.
• Returns: Nothing.
• Error states: Requires that combat, entitytracker, stuckdetection, and rooted components be attached before calling.

Events & listeners

• Listens to: None explicitly (relies on stategraph events for transitions).
• Pushes: rummage, tackle, doattack (via combat:TryAttack), doattack (via Combat.TryAttack).