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Mounted pack map has wrong references

Hello, I'm trying to make a generic menu that can load a dynamic set of indipendent(downloadable) maps and I've been looking into the pak system.

I made a project with only a map and some assets inside it(some custom and some unreals), and built it as a pak.
In another project that acts as a menu I've written some code to load and mount a pak.

The pack mounts correctly and it lets me open the map, but when loaded it doesent display any objects!
Looking into the Log file showed me that the reference paths for the map didnt get updated with the new mount directory but they still reference the /Game/ folder.

Here's the code I'm using to mount the pak.

 FString AbsolutePathToPak = TEXT("D:/PakTest/IndipendentMap.pak");
     FString StandardFilename = FPaths::ProjectPluginsDir() + TEXT("DLC1/");
     FPaths::MakeStandardFilename(StandardFilename);
     StandardFilename = FPaths::GetPath(StandardFilename);
 
     if (!pakPlatformFile->Mount(*AbsolutePathToPak, 0, *StandardFilename))
     {
         return false;
     }
 
     FPackageName::EnsureContentPathsAreRegistered();
     FPackageName::RegisterMountPoint(_T("/DLC1/"), StandardFilename);
 
 
     FAssetRegistryModule& AssetRegistryModule = FModuleManager::LoadModuleChecked<FAssetRegistryModule>(FName("AssetRegistry"));
     IAssetRegistry& assetRegistry = AssetRegistryModule.Get();
     FJsonSerializableArray pathnames;
 
     pathnames.AddUnique(TEXT("/Game/"));
     pathnames.AddUnique(TEXT("/DLC1/"));
     assetRegistry.ScanPathsSynchronous(pathnames, true);
     return true;

The pak gets correctly mounted and the map gets placed here:

 LogTemp: Map path:/DLC1/CustomMap/Content/MyMap.MyMap
 LogTemp: Map Package:/DLC1/CustomMap/Content/MyMap
 LogTemp Map Name: MyMap

And here's the log file output after I use the comand "open MyMap"

 LogNet: Browse: /DLC1/CustomMap/Content/MyMap
 LogLoad: LoadMap: /DLC1/CustomMap/Content/MyMap
 LogStreaming: Display: Flushing async loaders.
 LogStreaming: Error: Couldn't find file for package /Game/customassetone requested by async loading code. NameToLoad: /Game/customassetone
 LogStreaming: Error: Found 1 dependent packages...
 LogStreaming: Error:   /DLC1/CustomMap/Content/MyMap
 LogStreaming: Error: Couldn't find file for package /Game/customassettwo requested by async loading code. NameToLoad: /Game/customassettwo 


Basically the map tries to open customassetone and customassettwo from the /Game/ directory, when instead its in /DLC1/CustomMap/Content/ , the same directory as the map.

Does anyone know how can I update these references?
Thanks in advance for your time!

Product Version: UE 4.21
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asked Feb 15 '19 at 02:44 PM in Packaging & Deployment

avatar image

Hotminds Srl
1 1

avatar image Hotminds Srl Feb 20 '19 at 08:16 AM

Bumping, made no real progress. Only solution seems to change the DLC name to be the same as the menu and then mount the DLC in the root directory so it can keep the references. This is really bad though because you cant have files with the same name and it seems that you cant add things to the Engine folder without Unreal refusing to mount the pak

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