Publish a zero-velocity message at the end of an interaction

[mikepurvis]

Use a timeout for this if necessary.

[Scheik]

Could you explain how to realize, that a zero-velocity message is send at the end of each interaction?

I am using your code and it works fine to navigate my robot from within RViz, great job you have done here! Only Problem is, that robot stays moving if i release the mouse from interaction and i don't know how to solve that issue.

Would really appreciate it.

[mikepurvis]

It's logged as an issue right now because the current implementation doesn't actually do this— you're dependent on the underlying robot controller to enforce its own timeout based on cessation of command messages.

It should be relatively easy to add— basically check if event_type == MOUSE_UP in the callback, and if so, publish a cmd_vel message with everything set to zero.

[bcm0]

I would really appreciate this feature, as my motor driver doesn't support this yet.
Could you please point me in the right direction where to check for the event_type?
I can't see where the mouse events get processed in the source code.

[naveedhd]

I have placed the above PR just for discussion or starting idea for @adnion.