Is the hector_gazebo_plugins plugin built-in or do I build it myself?
I'm pretty new to Gazebo, so I apologize. I'm confused about Gazebo plugins. I have used the skid steer plugin and the differential drive plugins that were in a Gazebo tutorial and they both worked fine in my robot models. So I know how to use plugins, at least a little.
Now I'm starting to add sensors to my robot models and I can't figure out how to use the hectorgazeboplugins GazeboRosSonar plugin. http://wiki.ros.org/hectorgazeboplugins
Is this something that is already built into Gazebo or ROS or is this something that I need to download and build on my machine? If the latter, then where are the download and install instructions? The above URL appears to just be API documentation.
I'm using ROS Hydro and Gazebo 1.9.