BehaviorTree/BehaviorTree.CPP
BehaviorTree.CPP
BehaviorTree.CPP is a C++ library for designing task-switching logic and reactive behaviors using a hierarchical tree structure. It provides a framework for creating reactive logic systems that manage complex behaviors through an execution engine and a centralized data store for sharing state between nodes.
The library decouples high-level behavioral logic from source code by using an XML parser to define tree morphology. It further extends its functionality through a dedicated visualizer for monitoring real-time execution states and a specialized bridge for integrating ROS2 actions and services into the behavior tree for robotics control.
The system supports asynchronous task management and reactive behavior design, allowing the orchestration of long-running operations and the ability to interrupt tasks based on environment conditions. It utilizes a blackboard for data exchange, port-based variable mapping for modularity, and supports runtime extensions via plugins.
Features
- Behavior Trees - Provides a C++ framework for implementing hierarchical behavior trees to manage complex task logic in autonomous agents.
- Reactive Behavior Design - Enables the creation of system logic that monitors environment conditions to interrupt current tasks and switch behaviors in real time.
- Robotic Task Orchestration - Manages complex robot behaviors and task-switching by organizing actions into a hierarchical tree structure.
- XML Workflow Definitions - Uses XML files to declaratively define the behavior tree logic and structure, decoupling it from C++ code.
- ROS2 Ecosystem Integrations - Provides a software bridge to connect behavior tree deliberation logic with ROS2 actions and services.
- Asynchronous Task Management - Handles long-running non-blocking operations that return a running status to keep the main execution loop responsive.
- Blackboard Patterns - Provides a centralized blackboard for coordinating state and data exchange between disparate behavior tree nodes.
- Tick-Based Execution Models - Processes the behavior tree by periodically triggering root updates that propagate status signals through the node hierarchy.
- Debugging and Monitoring - Provides tools for inspecting real-time node transitions and blackboard state to debug complex behaviors.
- Behavior Tree Parsers - Implements a system for parsing XML files to decouple behavioral logic design from the compiled C++ source.
- Composite-Decorator Nodes - Utilizes composite-decorator nodes to modify the execution and return status of child behavioral nodes.
- Task Status Polling - Implements a mechanism to check the completion status of long-running asynchronous tasks during tree ticks.
- Functional Logic Modularization - Organizes behavioral logic into decoupled units via XML definitions to separate design from implementation.
- Port-Based Variable Mappings - Maps internal node inputs and outputs to blackboard entries to ensure tasks remain modular and reusable.
- Runtime Library Extensions - Allows the loading of custom task implementations at runtime via dynamic shared libraries.
- Hierarchical Nesting - Supports hierarchical nesting of sub-graphs to create reusable and modular behavioral components.
- Behavior Tree Visualizers - Ships a visual tool for monitoring real-time execution paths and state transitions within behavior trees.
- Game AI - Modern C++ library for behavior tree implementation.
- Behavior and Decision - C++ library for implementing behavior trees.
- Behavioral Logic - C++ library for implementing behavior tree logic.
- ROS Libraries and Tools - Library for implementing behavior trees in C++.
Star history
How this analysis was created: This summary and feature list were written by an AI model that read the project's README and public documentation pages. Each feature links to the documentation it came from; stars, license and language come straight from the GitHub API. The model does not read the source code, and the analysis is refreshed when the project is re-analysed. Learn more on our About page.
