meniku/NPBehave

Health v2 · maintenance only

Adoption not part of the score

1272 stars · 208 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

NPBehave is an event-driven behavior tree library for building code-based AI in Unity 3D. It stays in its current state instead of re-traversing from the root each frame, making it performant and simple, with blackboard support and Unreal-style node types.

Use cases

• create AI behavior trees for Unity game characters
• build event-driven NPC decision logic in C#
• implement enemy AI without visual editors
• use blackboards for AI memory in Unity
• avoid per-frame behavior tree re-traversal for performance
• extend behavior trees with custom node types

When to choose

• you build Unity games and prefer defining AI in code rather than visual editors
• you want performant, event-driven behavior trees inspired by Unreal's approach
• you need a lightweight, MIT-licensed, easily extendable behavior tree library

When to avoid

• you need a visual behavior tree editor or designer tooling
• your project is not built on Unity 3D
• you need utility AI, GOAP, or other AI architectures rather than behavior trees

Facets

library · maturity stable

game-engine simulation agent-framework artificial-intelligence simulation game-engine cross-platform behavior-trees unity3d game-ai event-driven blackboard csharp game-development

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