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model plugin doesn't receive data from a subscribed topic

asked 2013-07-23 10:45:51 -0500

Chris gravatar image


I have a problem and I think it comes from a stupid mistake, but I am not able to find it.

I have a world and a model plugin and data has to be exchanged. So I use the message system to send and receive messages. It works fine, both plugins are loaded and the model plugin sends a message to the world plugin. The data is received and the world plugin sends some data back. But the callback-function of the model plugin is never called.

Can you take a quick look and tell me what I did wrong? Here is the code code

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answered 2013-07-23 16:29:59 -0500

nkoenig gravatar image

I believe this is related to a problem with the Gazebo transport system. In the world pulgin message callback, you're creating a publisher then sending a message and then immediately deleting the node and publisher. The result is that the message doesn't have a chance to be sent.

The workaround is to make the node and publisher a member of the World Plugin. You should only have at most one node per class anyway.

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Thank you, that solves my problem!

Chris gravatar imageChris ( 2013-07-24 04:35:21 -0500 )edit
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Asked: 2013-07-23 10:45:51 -0500

Seen: 439 times

Last updated: Jul 23 '13