Quick Start

Create your first behavior tree in just a few lines of code:

AI = Sequence("NPC", () =>
{
    Wait(1);
    Do(() => Debug.Log("Hello"));

    Selector("Make A Choice", () =>
    {
        Sequence(() =>
        {
            Condition("Is Angry", () => IsAngry);
            Pickup("Egg");
            ThrowItemAt(() => Target);
        });

        SomeOtherAction();
    });

    Dance();
    MoveTo("Bed");
});

AI = Sequence("NPC", () =>
{
    Wait(1);
    Do(() => Debug.Log("Hello"));

    Selector("Make A Choice", () =>
    {
        Sequence(() =>
        {
            Condition("Is Angry", () => IsAngry);
            Pickup("Egg");
            ThrowItemAt(() => Target);
        });

        SomeOtherAction();
    });

    Dance();
    MoveTo("Bed");
});

Key Features

• → Embedded DSL — Clean and simple DSL for declaring nodes
• → Composition based API — Compose behaviors through functions
• → Time Travel Debugging — Visual debugger with the ability to scrub through execution history
• → Async Support — Lifecycle methods with synchronous and asynchronous paths
• → Graceful Interruptions — Handle interruptions predictably and reliably with lifecycle methods
• → Parameterized Nodes — Create nodes that can accept parameters and return values
• → Recursion — Nodes can be recursive, enabling things such as Task Decomposition