Unity Pro Hierarchical State Machine & AI Decision Architecture (HFSM)

Zero-GC Hierarchical State Machine & AI decision framework for Unity with custom inspector, player & boss AI controllers.

Production-grade, zero-allocation Hierarchical Finite State Machine (HFSM) framework for Unity indie games. Features true hierarchical state nesting, zero-GC update ticks, live Unity Inspector diagnostic drawer, pushdown automaton state stack for interrupt states (pause, stun, menus), declarative predicate combinators (And, Or, Not), decoupled ScriptableObject event channels, and complete Character & Multi-Phase Boss AI sample controllers.

• Unity 2021.3+, 2022.3+, 2023.2+ and Unity 6 Compatible
• 100% Zero-GC Heap Allocation Per Frame
• Standard Unity Package Manager (UPM) Installation
• Custom Real-time Inspector Diagnostics & Trigger Debugging
• Pushdown Automaton State Stack for Menus & Interrupts
• 3D/2D Locomotion Controller (Idle, Walk, Sprint, Roll, Fall)
• Multi-Phase Boss Encounter Controller with Enrage & Meteors
• 100% Royalty-Free Commercial License