Unreal Engine 4.26 Documentation

Unreal Engine 4.27 Documentation

Unreal Engine 5.0 Documentation

Unreal Engine 5.1 Documentation

Unreal Engine 5.2 Documentation

Unreal Engine 5.3 Documentation

> Unreal Engine API Reference > Runtime > Engine > Engine > UPrimaryDataAsset

Light Theme

Dark Theme

UPrimaryDataAsset

A DataAsset that implements GetPrimaryAssetId and has asset bundle support, which makes it something that can be manually loaded/unloaded from the AssetManager Making blueprint subclasses of this is useful because you can make blueprint-only primary asset types Blueprint subclasses will end up with a PrimaryAssetType equal to the name of the first native class found going up the hierarchy, or the top level blueprint class that directly subclasses this IE, if you have PrimaryDataAsset -> ParentNativeClass -> ChildNativeClass -> BlueprintAsset the type will be ChildNativeClass Whereas if you have PrimaryDataAsset -> ParentBlueprintClass -> ChildBlueprintClass the type will be ParentBlueprintClass To override this behavior, override GetPrimaryAssetId in your native class

Windows

MacOS

Linux

Inheritance Hierarchy

UObjectBase

UObjectBaseUtility

UObject

UDataAsset

UPrimaryDataAsset

UPrimaryAssetLabel

References

Module	Engine
Header	/Engine/Source/Runtime/Engine/Classes/Engine/DataAsset.h
Include	#include "Engine/DataAsset.h"

Syntax

class UPrimaryDataAsset : public UDataAsset

Remarks

A DataAsset that implements GetPrimaryAssetId and has asset bundle support, which makes it something that can be manually loaded/unloaded from the AssetManager Making blueprint subclasses of this is useful because you can make blueprint-only primary asset types Blueprint subclasses will end up with a PrimaryAssetType equal to the name of the first native class found going up the hierarchy, or the top level blueprint class that directly subclasses this IE, if you have PrimaryDataAsset -> ParentNativeClass -> ChildNativeClass -> BlueprintAsset the type will be ChildNativeClass Whereas if you have PrimaryDataAsset -> ParentBlueprintClass -> ChildBlueprintClass the type will be ParentBlueprintClass To override this behavior, override GetPrimaryAssetId in your native class

Variables

		Name	Description
	FAssetBundleDat...	AssetBundleData	Asset Bundle data computed at save time. In cooked builds this is accessible from AssetRegistry

Functions

		Name	Description
	void	UpdateAssetBundleData()	This scans the class for AssetBundles metadata on asset properties and initializes the AssetBundleData with InitializeAssetBundlesFromMetadata

Overridden from UObject

	Name	Description
FPrimaryAsse...	GetPrimaryAssetId()	Returns an Type:Name pair representing the PrimaryAssetId for this object.
void	PostLoad()	Do any object-specific cleanup required immediately after loading an object.
void	PreSave ( const ITargetPlatform* TargetP... )	Updates AssetBundleData

Help shape the future of Unreal Engine documentation! Tell us how we're doing so we can serve you better.

Take our survey

Dismiss