Advanced AI NPC Systems in Unity

Basic NPC logic is not enough anymore.

Modern games require adaptive and intelligent NPC behavior.

---

Moving Beyond State Machines

State machines are good for simple logic.

But they break when:

• too many states
• complex decisions
• dynamic gameplay

---

Behavior Trees

Best for:

• modular AI
• scalable systems
• reusable behaviors

---

Utility AI

NPC makes decisions based on scores.

Example:

attackScore = aggression * distanceFactor;

Highest score wins.

---

Adaptive AI (Next Level)

Track player:

• skill level
• aggression
• patterns

Then adjust NPC behavior.

---

Final Thoughts

AI NPCs should feel:

• reactive
• dynamic
• unpredictable

That’s what creates great gameplay.

---