AActor::IsEditorOnlyLoadedInPIE

function Engine Since 5.0

#include "GameFramework/Actor.h"

Access: public Specifiers: virtual

Description

Returns whether this actor, despite being editor-only, should still be loaded and present during Play-In-Editor sessions. The base class returns false; override to opt in for specific actor types that are needed during PIE testing.

Caveats & Gotchas

• Returning true here only affects PIE — the actor is still stripped from standalone cooked builds. Do not use this as a substitute for IsRuntimeOnly logic.
• Actors that return true from this function will be included in PIE world duplication, which may affect level streaming and duplication performance for large levels.

Signature

virtual bool IsEditorOnlyLoadedInPIE() const { return false; }

Return Type

bool

Example

Allow an editor actor to persist into PIE C++

bool AMyPIEDebugActor::IsEditorOnlyLoadedInPIE() const
{
	// This actor is editor-only but we need it during PIE for debug visualization
	return true;
}

Version History

Introduced in: 5.0

Version	Status	Notes
5.6	stable	—

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