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RPC Event with map-variables

Hello,

my Engine crashes everytime, when I use a multicast event (executed from server, Blueprints) which sends parameters with "map-data" from variables. For me no problem to work around, but it seems to be a bug and should be fixed. Also because replication of these map-variables is already blocked.

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Product Version: UE 4.16
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asked Jun 24 '17 at 11:57 AM in Bug Reports

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apsodi
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avatar image nrossol Jun 25 '17 at 05:08 PM

By any chance, are you doing these calls from inside a Level Blueprint? If so, it's possible that's it's related to a confirmed 4.16 Engine bug I recently posted here:

http://answers.unrealengine.com/questions/660195/bug-criticalreproducible-any-level-blueprint-multi.html

avatar image apsodi Jun 26 '17 at 10:24 AM

I didn't call it from Level Blueprint but from Game State. But thank you. I think the problem is relatet to the map-parameters, because it works if I use for example arrays instead.

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1 answer: sort voted first

Last time I looked into TMap replication it was not supported. It was not long ago (around 4.15 release) but Im pretty sure its still the case. Not really a Bug just a missing Feature that still needs to be implemented. TMaps themself just recently got general BP support so expect them to miss some Features and beeing buggy a bit in General.

But what can we Ask for now is a Warning Message if TSet/TMap is used on Replication Events.

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answered Jun 26 '17 at 03:52 AM

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Nachtmahr
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avatar image apsodi Jun 26 '17 at 10:21 AM

I agree. A warning message would be nice. That's on reason why I wrote it here in the answerhub. The feature that replication works with them generally, would be even better.

avatar image Sean L ♦♦ STAFF Jul 05 '17 at 07:57 PM

Hello,

I can go ahead and toss in a feature request for a warning that will trigger when TSet/TMap is used in this manner.

Thanks for your suggestions.

avatar image apsodi Jul 06 '17 at 10:03 AM

Thank you very much!

avatar image EvoPulseGaming Mar 15 '18 at 02:39 AM

This still crashes on 4.18. Spent two days on this... (20+ hours) Thanks......

Also the crash log, references a .cpp file that no longer exists... (Says deprecated code)

Now, I get to manually split the map, into two arrays, just to recreate them into a map on the server.

avatar image Two-faced Apr 25 '18 at 10:45 AM

Still an issue in 4.19... Quite annoying.

avatar image Black2Own Aug 14 '18 at 06:16 PM

Yes i was creating almost full project without noticing that Map Variable can't be replicated and now i have to waste working weeks and weeks to change all map variables to split name and float ....it's indeed annoying.. 4.19

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