AI Navigation in Godot 4.3+

Cover NavigationAgent2D/3D, steering behaviors, behavior trees, and patrol patterns. All examples target Godot 4.3+ with no deprecated APIs.

Related skills: state-machine for AI state management, component-system for modular AI behaviors, player-controller for movement physics patterns, math-essentials for pathfinding vectors and steering math, limboai for BT + HSM with a visual editor, beehave for lightweight GDScript behavior trees. For a structured behavior tree (rather than steering/navigation), see the comparison tables in limboai and beehave.

1. Navigation Setup

Scene Structure

World (Node2D or Node3D)
└── NavigationRegion2D (or NavigationRegion3D)
    ├── TileMapLayer / StaticBody2D (geometry)
    └── Enemy (CharacterBody2D with NavigationAgent2D child)