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| Signal update frames duplicating? 30/06/2024 at 08:23 #157709 | |
itwithlyam
2 posts |
Hi, I have been experimenting with the Interface Gateway recently and have managed to connect reliably running with a scenario using full ARS. However, looking through the data, some events like signal updates appear to be duplicated (sending twice), and sometimes even tripled. I have attached some examples (after being sent into a Discord channel by a bot) of this happening.   Post has attachments. Log in to view them. Log in to reply |
| Signal update frames duplicating? 30/06/2024 at 08:27 #157710 | |
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itwithlyam
2 posts |
Now I think about it, this may just be how ARS works? I've not tested it with humans yet so it will be interesting to see the differences.
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| Signal update frames duplicating? 02/07/2024 at 08:29 #157718 | |
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jonathanp
17 posts |
I don't think that any guarantee is given that a Signal Data message represents a discrete event which has just occurred in the simulation. It simply says what the current state is. If no non-event messages were ever sent it would be impossible to get the full state of the program without clearing and replacing every signal. It's up to your program to keep track of the simulation state and determine if any relevant changes have occurred. Last edited: 02/07/2024 at 08:30 by jonathanp Reason: None given Log in to reply |
| Signal update frames duplicating? 02/07/2024 at 15:29 #157720 | |
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Dionysusnu
576 posts 
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SimSig does implement the Snapshot request message to get the whole state of the simulation. From my experience, signal states only get sent when they do update. Nevertheless, I agree that a discreteness guarantee is not a useful expectation. Last edited: 02/07/2024 at 15:30 by Dionysusnu Reason: None given Log in to reply |
| Signal update frames duplicating? 02/07/2024 at 17:39 #157722 | |
GeoffM
6318 posts |
It is possible that some internal states trigger an Interface Gateway message without any apparent changes. That said, the example shown only shows one of the nine possible Information Gateway signal change types (ie only showing aspect) so is not a helpful example. Yes, SimSig uses snapshots. SimSig Boss Log in to reply |