Loading UAssets from c++

[Commander_Nimrod]

I have a directory structure Game/Content/OldWest/VOL7/Meshes which contains uasset meshes. I am trying to load them dynamically through code (this is my first attempt). But I am unable to get the following code to load any UObjects. Any ideas, thanks?

    FString path = /*FPaths::ProjectContentDir() + */TEXT("/Content/OldWest/VOL7/Meshes/");

    UObjectLibrary* library = UObjectLibrary::CreateLibrary(UObject::StaticClass(), false, true);
    library->bHasBlueprintClasses = true;
    //library->AddToRoot();
    library->LoadAssetDataFromPath(path);
    library->LoadAssetsFromAssetData();

    TArray<UObject*> LoadedAssets;
    library->GetObjects(LoadedAssets);

    for (UObject* Asset : LoadedAssets)
    {
        if (Asset)
        {
            UE_LOG(LogTemp, Log, TEXT("Loaded Asset: %s"), *Asset->GetName());
        }
    }

[GRIM_Warlock (Grim)]

Hey @Commander_Nimrod

The actual path for /Content is /Game, so you should replace “/Content/OldWest/VOL7/Meshes/” with “/Game/OldWest/VOL7/Meshes/”.

You can also do something like this to get all assets in a folder:

#include "LevelEditor.h"
#include "AssetRegistry/AssetRegistryModule.h"
#include "Engine/Blueprint.h"

// -------------
FAssetRegistryModule& AssetRegistryModule = FModuleManager::LoadModuleChecked<FAssetRegistryModule>("AssetRegistry");
IAssetRegistry& AssetRegistry = AssetRegistryModule.Get();

FARFilter Filter;
Filter.bRecursiveClasses = true;
Filter.bRecursivePaths = true;

// Get only Blueprint Assets
// You can modify this to get only StaticMesh or all the types you want if you want to filter it
Filter.ClassPaths.Add(UBlueprint::StaticClass()->GetClassPathName()); 

// Add your folder path
Filter.PackagePaths.Add("/Game/OldWest/VOL7/Meshes/");

// Get the assets and do stuff
TArray<FAssetData> AssetList;
AssetRegistry.GetAssets(Filter, AssetList);

for (const FAssetData& Asset : AssetList)
{
	// Do stuff with the assets...
}

[Commander_Nimrod]

Thanks for responding, is there anything else I need to do to the data? I can’t get anything in the AssetList.

[GRIM_Warlock (Grim)]

@GRIM_Warlock

FAssetRegistryModule& AssetRegistryModule = FModuleManager::LoadModuleChecked<FAssetRegistryModule>("AssetRegistry");
IAssetRegistry& AssetRegistry = AssetRegistryModule.Get();

FARFilter Filter;
Filter.bRecursiveClasses = true;
Filter.bRecursivePaths = true;

// Get only Blueprint Assets
// You can modify this to get only StaticMesh or all the types you want if you want to filter it
Filter.ClassPaths.Add(UBlueprint::StaticClass()->GetClassPathName()); 

// Add your folder path
Filter.PackagePaths.Add("/Game/OldWest/VOL7/Meshes/");

// Get the assets and do stuff
TArray<FAssetData> AssetList;
AssetRegistry.GetAssets(Filter, AssetList);

for (const FAssetData& Asset : AssetList)
{
	// Do stuff with the assets...
}

You can use Filter.ClassPaths.Add(UStaticMesh::StaticClass()->GetClassPathName()); to get Static Mesh assets, or at least that should work. You can also not specify any ClassPath and that should get all assets in the folder regardless of the type.

[Commander_Nimrod]

@GRIM_Warlock

Filter.ClassPaths.Add(UStaticMesh::StaticClass()->GetClassPathName());

That worked thanks.