ashblue/fluid-behavior-tree

Health v2 · maintenance only

Adoption not part of the score

1181 stars · 126 forks observed · 2026-08-28

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

A code-driven behavior tree library for Unity3D built with the builder pattern and a fluent API. It includes pre-built task nodes, a runtime tree visualizer for debugging, and support for custom reusable nodes.

Use cases

• build AI behavior trees for Unity game characters
• create NPC decision-making logic in C# without visual editors
• debug behavior trees at runtime in the Unity editor
• write maintainable game AI for large Unity projects
• define enemy AI state logic with a fluent builder API

When to choose

• you want code-first behavior trees instead of node-graph editors in Unity
• you need a lightweight, well-tested behavior tree library with no integration overhead
• you want runtime visualization of your AI trees for debugging

When to avoid

• you need a visual node-based behavior tree editor for designers
• your project is not built on Unity
• you need behavior trees outside of game AI contexts

Facets

library · maturity active

game-engine simulation developer-tools artificial-intelligence gaming-tools game-engine cross-platform behavior-tree unity3d builder-pattern ai game-ai fluent-api game-development

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