State Machines in Godot 4.3+

Choose the right FSM pattern for your complexity level. All examples target Godot 4.3+ with no deprecated APIs.

Related skills: player-controller for movement state integration, ai-navigation for AI state patterns, resource-pattern for resource-based state configuration, animation-system for AnimationTree states driven by FSM, dialogue-system for dialogue flow as a state machine, ability-system for caster state gating (casting/stunned), limboai for the LimboAI addon's HSM (BTState) if you need a behavior tree alongside your FSM, beehave for a GDScript-only BT alternative.

When to reach for an addon: This skill covers the built-in FSM patterns (enum, node-based, resource-based). If your agent needs a full behavior tree, see limboai (C++ + HSM, Godot 4.6+) or beehave (pure GDScript, Godot 4.1+) instead.

1. Approach Comparison