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UnitySendMessage
EMebane
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I am making a plugin. When a thread in the plugin completes I want to use UnitySendMessage to communicate back to my non-plugin code. I see Android/iOS implementations of UnitySendMessage. Has UnitySendMessage been exposed/implemented for Windows UWP? Here is a related thread suggesting that not long ago it was possible but un-implemented for WP8 Plugins. If not, what is a thread-safe way of communicating to Unity from a UWP DLL?
https://community.unity.com/t5/Windows/using-UnitySendMessage-in-WP8-Plugins/td-p/2145347
Best Answer
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OptionsEMebane
✭
I went with a pattern similar to the producer/consumer pattern described here:
http://answers.unity3d.com/questions/305882/how-do-i-invoke-functions-on-the-main-thread.htmlIn the main thread I have a Queue of Actions. On Update I check if there are any Actions in the Queue. If so I DeQueue them and trigger them. When I start a thread I pass it references to the Queue and the Action that should be added to the Queue when the threaded activity is complete.
5
Answers
I was able to pass a reference to a delegate in my non-plugin code into the plugin, which I can invoke from the plugin.
I did not have to use Marshal.GetFunctionPointerForDelegate as suggested in the link I posted. Is this because my plugin is also C# (managed) and the suggestion was for a C++ plugin (unmanaged)?
I went with a pattern similar to the producer/consumer pattern described here:
http://answers.unity3d.com/questions/305882/how-do-i-invoke-functions-on-the-main-thread.html
In the main thread I have a Queue of Actions. On Update I check if there are any Actions in the Queue. If so I DeQueue them and trigger them. When I start a thread I pass it references to the Queue and the Action that should be added to the Queue when the threaded activity is complete.