README
Message and service data structures for interacting with Gazebo from ROS2
This package currently contains some Gazebo-specific ROS message and service data structures (.msg and .srv)
Messages (.msg)
- Contact: related to ignition::msgs::Contact. Contact info between collisions in Gazebo Sim. 
- Contacts: related to ignition::msgs::Contacts. A list of contacts. 
- Entity: related to ignition::msgs::Entity. Entity of Gazebo Sim. 
- EntityFactory: related to ignition::msgs::EntityFactory. Message to create a new entity. 
- EntityWrench: related to ignition::msgs::EntityWrench. Wrench to be applied to a specified Entity of Gazebo Sim. 
- Light: related to ignition::msgs::Light. Light info in Gazebo Sim. 
- WorldControl: related to ignition::msgs::WorldControl. Message to control world of Gazebo Sim. 
- WorldReset: related to ignition::msgs::WorldReset. Reset time and model of simulation. 
Services (.srv)
- ControlWorld: Control world of Gazebo Sim,for example,pasue,pasue with multiple steps,resume,etc. 
- DeleteEntity: Delete Entity in Gazebo Sim 
- SetEntityPose: Set pose of Entity in Gazebo Sim 
- SpawnEntity: Spawn a Entity in Gazebo Sim