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  3. UObjectBase

UObjectBase

Low level implementation of [UObject](API\Runtime\CoreUObject\UObject), should not be used directly in game code

API > API/Runtime > API/Runtime/CoreUObject

Low level implementation of UObject, should not be used directly in game code

   
Name UObjectBase
Type class
Header File /Engine/Source/Runtime/CoreUObject/Public/UObject/UObjectBase.h
Include Path #include "UObject/UObjectBase.h"

Syntax

class UObjectBase

Derived Classes

Constructors

Name Remarks Include Path Unreal Specifiers
  UObject/UObjectBase.h  
Constructor used for bootstrapping Constructor used for bootstrapping UObject/UObjectBase.h  

UObjectBase ( UClass* InClass,
EObjectFlags InFlags,
EInternalObjectFlags InInternalFlags,
UObject* InOuter,
FName InName,
int32 InInternalIndex,
int32 InSerialNumber,
FRemoteObjectId InRemoteId
)

 Constructor used by StaticAllocateObject Constructor used by StaticAllocateObject UObject/UObjectBase.h  

Destructors

Name Remarks Include Path Unreal Specifiers

virtual ~UObjectBase()

 Final destructor, removes the object from the object array, and indirectly, from any annotations UObject/UObjectBase.h  

Structs

Name Remarks
FNameAndObjectHashIndex Merged data for constinit UObjects to hold their name before the FName system is initialized The object flags RF_MarkAsNative | RF_NeedInitialization are used to assert correct use of this union.

Variables

Public

Name Type Remarks Include Path Unreal Specifiers
NamePrivate FNameAndObjectHashIndex   UObject/UObjectBase.h  

Protected

Name Type Remarks Include Path Unreal Specifiers
ClassPrivate ObjectPtr_Private::TNonAccessTrackedObjectPtr< UClass > Class the object belongs to. UObject/UObjectBase.h  
InternalIndex int32 Index into GObjectArray...very private. UObject/UObjectBase.h  
ObjectFlags EObjectFlags Flags used to track and report various object states. UObject/UObjectBase.h  
OuterPrivate ObjectPtr_Private::TNonAccessTrackedObjectPtr< UObject > Object this object resides in. UObject/UObjectBase.h  
UObjectBase union UObjectBase   UObject/UObjectBase.h  

Functions

Public

Name Remarks Include Path Unreal Specifiers

void AddRef ()

 Increments ref-count on the object. UObject/UObjectBase.h  

void AtomicallyClearFlags ( EObjectFlags FlagsToClear
)

 Atomically clears the specified flags. UObject/UObjectBase.h  

void AtomicallySetFlags ( EObjectFlags FlagsToAdd
)

 Atomically adds the specified flags. UObject/UObjectBase.h  

UClass * GetClass()

 Returns the UClass that defines the fields of this object UObject/UObjectBase.h  

UPackage * GetExternalPackage()

 Returns the external UPackage associated with this object, if any UObject/UObjectBase.h  

UPackage * GetExternalPackageInternal()

 Returns the external UPackage for this object, if any, NOT THREAD SAFE, used by internal gc reference collecting. UObject/UObjectBase.h  

EObjectFlags GetFlags()

 Retrieve the object flags directly UObject/UObjectBase.h  

FName GetFName()

 Returns the logical name of this object UObject/UObjectBase.h  

virtual FName GetFNameForStatID()

 Overridable method to return a logical name for identification in stats. UObject/UObjectBase.h  

UObject * GetOuter()

 Returns the UObject this object resides in UObject/UObjectBase.h  

uint32 GetUniqueID ()

 Returns the unique ID of the object...these are reused so it is only unique while the object is alive. UObject/UObjectBase.h  

bool IsValidLowLevel()

 Checks to see if the object appears to be valid UObject/UObjectBase.h  

bool IsValidLowLevelFast ( bool bRecursive
) const

 Faster version of IsValidLowLevel. UObject/UObjectBase.h  

void MarkAsReachable()

 Marks the object as Reachable if it's currently marked as MaybeUnreachable by incremental GC. UObject/UObjectBase.h  

void ReleaseRef()

 Release ref-count on the object. UObject/UObjectBase.h  

void SetExternalPackage ( UPackage* InPackage
)

 Associate an external package directly to this object. UObject/UObjectBase.h  

Protected

Name Remarks Include Path Unreal Specifiers

virtual void DeferredRegister ( UClass* UClassStaticClass,
const TCHAR* PackageName,
const TCHAR* Name
)

 Convert a boot-strap registered class into a real one, add to uobject array, etc UObject/UObjectBase.h  

void LowLevelRename ( FName NewName,
UObject* NewOuter
)

 Just change the FName and Outer and rehash into name hash tables. UObject/UObjectBase.h  

void Register ( const TCHAR* PackageName,
const TCHAR* Name
)

 Enqueue the registration for this object. UObject/UObjectBase.h  

void Register ( UClass*(*)() StaticClassFn,
const TCHAR* PackageName,
const TCHAR* Name
)

 Enqueue the registration for this object. UObject/UObjectBase.h  

virtual void RegisterDependencies()

 Force any base classes to be registered first UObject/UObjectBase.h  

void SetFlagsTo ( EObjectFlags NewFlags
)

 Set the object flags directly UObject/UObjectBase.h  

Static

Name Remarks Include Path Unreal Specifiers

static void PrefetchClass ( UObject* Object
)

   UObject/UObjectBase.h  

static void PrefetchOuter ( UObject* Object
)

   UObject/UObjectBase.h  

static FString RemoveClassPrefix ( const TCHAR* ClassName
)

 Removes the class prefix from the given stringRemoves prefix from the native class name UObject/UObjectBase.h  

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