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Best archive for serializing actors

I'm currently trying to create a save system for my game. I have an array of actors that I need to save, however, I can't figure out which archive to use to store it. Also, when I have the actor serialized in the archive, how do I actually write it to disk?

I have tried to use FBufferArchive and FFileHelper::SaveArrayToFile, however after the engine crash, I found this in a parent class of the FBufferArchive

 virtual FArchive& operator<<( class UObject*& Res ) override
 {
     // Not supported through this archive
     check(0);
     return *this;
 }

Apparently, FBufferArchive does not support UObject (thus AActor) serialization. Any tips on which archive does support UObject serialization and can be written to disk?

Thanks

Product Version: UE 4.20
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asked Nov 24 '18 at 11:48 PM in C++ Programming

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DELTA_12
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avatar image DELTA_12 Nov 25 '18 at 12:26 AM

Okay, so I figured out how to save an Actor:

     TArray<uint8> bytes;   
     FObjectWriter Ar = FObjectWriter(bytes);
     for (AActor* a : ActorsToSave)
     {
             a->Serialize(Ar);
     }
     FFileHelper::SaveArrayToFile(bytes, TEXT("S://Saves/Test.sav"));

I still don't know hot to turn the saved actor back into real one though. If I figure it out, I'll post a solution for anyone who might stumble upon this.

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