AActor::SetMakeNoiseDelegate

function Engine Since 4.0

#include "GameFramework/Actor.h"

Access: public Specifiers: static

Description

Replaces the global delegate that handles `MakeNoise` calls, allowing custom AI hearing logic to intercept or replace the default noise propagation.

Caveats & Gotchas

• This is a static, engine-wide replacement — setting it affects every actor that calls `MakeNoise` in the entire game. Calling it more than once will silently overwrite the previous handler.
• The default implementation is `AActor::MakeNoiseImpl`. If you replace it without calling the original, built-in AI perception noise events will stop working. Typically only overridden in the game's `GameMode` or a custom audio manager.

Signature

static ENGINE_API void SetMakeNoiseDelegate(const FMakeNoiseDelegate& NewDelegate)

Parameters

Name	Type	Description	Default
NewDelegate	const FMakeNoiseDelegate&	The new delegate to use as the global MakeNoise implementation.	—

Return Type

void

Example

Install a custom noise handler at game start C++

void AMyGameMode::BeginPlay()
{
    Super::BeginPlay();
    AActor::SetMakeNoiseDelegate(
        FMakeNoiseDelegate::CreateStatic(&AMyGameMode::CustomMakeNoise)
    );
}

void AMyGameMode::CustomMakeNoise(AActor* NoiseMaker, float Loudness,
    APawn* NoiseInstigator, const FVector& NoiseLocation, float MaxRange, FName Tag)
{
    // Custom noise logic, then optionally call default:
    AActor::MakeNoiseImpl(NoiseMaker, Loudness, NoiseInstigator, NoiseLocation, MaxRange, Tag);
}

Version History

Introduced in: 4.0

Version	Status	Notes
5.6	stable	—

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