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State Machine (Grade A)Security-tested data-ai skill for Claude AI. Grade A. Generic state machine patterns — IState interface, StateMachine<T>, game state management (menu/gameplay/pause), enemy AI states, hierarchical FSM

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Daniel NikulshynReviewed by Daniel Nikulshyn·Updated July 2026

Overview

State Machine (Grade A) is a generic, reusable finite state machine pattern. It covers player states, enemy AI, game flow (menu, gameplay, pause), and hierarchical state machines. The pattern allows for ScriptableObject-driven states for designer configuration. The state machine pattern follows the IState interface, which ensures states are consistent and easy to manage. The pattern provides a robust way to implement state-driven behavior in Unity games. It uses a generic StateMachine<T> class, where T typically represents the owner (player, enemy, game manager) that states can access. The state machine supports various features, including transitioning between states, checking if the current state is of a specific type, and reverting to the previous state. It is suitable for a broad range of games and can be customized to fit specific project requirements.

Key features

  • IState interface with Enter, Exit, Update, and FixedUpdate methods
  • Generic StateMachine class with type parameter for owner object
  • State registration and transition management
  • Support for ScriptableObject-driven states

Pricing

Model
Free
Category
Skills
Rating
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Use cases

Player State Management

Manage player states in a 2D platformer, such as idle, running, jumping, and pausing.

Enemy AI State Management

Implement enemy AI states, such as patrolling, chasing, and attacking, using the state machine.

Game Flow Management

Manage game flow states, such as menu, gameplay, and pause, using the state machine.

Pros & Cons

Pros

  • Reusable and generic state machine implementation
  • Supports hierarchical finite state machines
  • Allows designer configuration through ScriptableObject-driven states
  • Decouples state logic from owner objects

Cons

  • May require additional setup for complex state hierarchies
  • Not specifically optimized for performance-critical applications

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Q&A

Is it optimized for performance?

No, it is not specifically optimized for performance-critical applications.

Asked by Aaliyah Johnson · Apr 25, 2026

Is it suitable for complex games?

Yes, it supports hierarchical finite state machines, but may require additional setup for complex state hierarchies.

Asked by Noor Siddiqui · Mar 17, 2026

What features does it support?

The state machine supports state registration, transition management, and ScriptableObject-driven states, with methods like Enter, Exit, Update, and FixedUpdate.

Asked by Bianca Ferreira · Feb 28, 2026

What is the State Machine tool?

A generic, reusable finite state machine pattern for Unity games, covering player states, enemy AI, and game flow.

Asked by Faisal Rahman · Feb 15, 2026

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