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Grassgekkobrain

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

Overview​

The GrassgekkoBrain component defines the behavioral logic for grassgekko entities in Don't Starve Together. It implements an AI behavior tree (BT) using a priority-based node structure to handle panic responses (e.g., fleeing from players or scary entities), wanders to a herd location, and respects leash constraints via the leash behavior. This component is attached to grassgekko entities and coordinates movement through DST's behavior system.

Dependencies & Tags​

  • Components used:
    • knownlocations: Accessed via self.inst.components.knownlocations:GetLocation("herd") to retrieve the herd's current position for wandering.
  • Tags checked:
    • NO_TAGS = {"FX", "NOCLICK", "DECOR", "INLIMBO", "stump", "burnt"} is passed to RunAway to exclude entities with these tags from triggering avoidance behavior.
  • Behaviors used:
    • wander, faceentity, runaway, leash (referenced via require but only Wander and RunAway are used in the tree).
  • Brain utilities:
    • BrainCommon.PanicTrigger, BrainCommon.ElectricFencePanicTrigger from brains/braincommon.lua.

Properties​

No explicit properties are initialized in the constructor or elsewhere in this file beyond standard Brain inheritance. All configuration is done via local constants.

Main Functions​

GrassgekkoBrain:OnStart()​

  • Description: Initializes the behavior tree root node when the brain starts. Constructs a priority node that evaluates behaviors in order of urgency: panic triggers first, followed by RunAway for specific entity types, and finally a Wander action targeting the herd location.
  • Parameters: None.
  • Returns: nil.

Events & Listeners​

This component does not register or fire any events directly. All event-driven behavior is encapsulated within the behavior tree nodes (RunAway, Wander, BrainCommon.PanicTrigger, etc.) and their underlying logic.