BehaviorTree.ROS2

This repository contains useful wrappers to use ROS2 and BehaviorTree.CPP together.

In particular, it provides a standard way to implement:

• Behavior Tree Executor with ROS Action interface.
• Action clients.
• Service Clients.
• Topic Subscribers.
• Topic Publishers.

Our main goals are:

• to minimize the amount of boilerplate.
• to make asynchronous Actions non-blocking.

Documentation

• ROS Behavior Wrappers
• TreeExecutionServer
• Sample Behaviors

Note that this library is compatible only with:

• BT.CPP 4.6 or newer.
• ROS2 Humble or newer.

Additionally, check plugins.hpp to see how to learn how to wrap your Nodes into plugins that can be loaded at run-time.

Installation

1. Download necessary repositories

~/ros_ws/src$ git clone https://github.com/marco-ambrosio/BehaviorTree.ROS2.git
~/ros_ws/src$ vcs import < BehaviorTree.ROS2/requirements.repos BehaviorTree.ROS2

2. Install dependencies with rosdep

~/ros_ws$ sudo apt update && rosdep update
~/ros_ws$ rosdep install --from-path src --ignore-src -y

3. Build the workspace

Acknowledgements

A lot of code is either inspired or copied from Nav2.

For this reason, we retain the same license and copyright.