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Abigailbrain

Based on game build 714014 | Last updated: 2026-03-03

Overview​

Abigailbrain defines the behavior tree (BT) for Abigail, a ghost entity in DST. It dynamically selects between defensive and aggressive behavioral modes, and handles interactions such as dancing with the leader, haunting targets, playing with other ghosts, watching minigames, and responding to traders. The brain relies heavily on external components: follower for leader tracking, combat for target management, timer for cooldowns, trader for trade detection, and minigame_participator for minigame observation.

Usage example​

local inst = CreateEntity()
inst:AddComponent("follower")
inst:AddComponent("combat")
inst:AddComponent("timer")
inst:AddComponent("trader")
inst:AddComponent("minigame_participator")
inst.is_defensive = true  -- Set Abigail's mode
inst:AddBrain("abigailbrain")

Dependencies & tags​

Components used: follower, combat, timer, trader, minigame_participator
Tags: Checks ghostkid, graveghost, busy, gestalt, swoop; adds none.

Properties​

No public properties are initialized directly in the constructor. The behavior is driven by instance properties set externally (e.g., inst.is_defensive, inst._haunt_target, inst._is_transparent).

Main functions​

OnStart()​

  • Description: Initializes and starts the behavior tree for Abigail. Constructs a prioritized hierarchy of WhileNodes and PriorityNodes that define her behavior under varying conditions (e.g., dancing, watching, haunting, playing, fighting).
  • Parameters: None.
  • Returns: Nothing.
  • Error states: Does not return errors; failure occurs silently if required components are missing.

Events & listeners​

  • Listens to: None (does not register event handlers).
  • Pushes: dance, start_playwithghost (with { target = playfultarget }).