Saving Unreal editor assets: checkout, dirty state and results

Asset Saving

Introduction

Automatic saving of custom assets

Before saving, the read-only status of read-only files is removed. Designed for Perforce to prevent crashes caused by assets being unwritable

Implementation

UFUNCTION(BlueprintCallable)  
static bool SaveLoadedAsset(UObject* AssetObject, FString AssetPath);

bool UMyBlueprintFunctionLibrary::SaveLoadedAsset(UObject* AssetObject, FString AssetPath)
{
	if(!AssetObject || AssetPath.IsEmpty())return false;
	UPackage* Package = AssetObject->GetPackage();
	if(!Package)
	{
		Package = CreatePackage(*AssetPath);	
	}
	
	if(Package)
	{
		Package->FullyLoad();
		Package->SetDirtyFlag(true);
		FAssetRegistryModule::AssetCreated(AssetObject);
		const FString PackageFileName = FPackageName::LongPackageNameToFilename(Package->GetPathName(), FPackageName::GetAssetPackageExtension());
		IPlatformFile& PlatformFile = FPlatformFileManager::Get().GetPlatformFile();
		PlatformFile.SetReadOnly(*PackageFileName, false);
		FSavePackageArgs SavePackageArgs;
		return UPackage::SavePackage(Package, AssetObject, *PackageFileName, SavePackageArgs);
	}
	
	return false;
}