Debounced Input Component

DebouncedInputComponent.cpp

#include "DebouncedInputComponent.h"
#include "TimerManager.h"

UDebouncedInputComponent::UDebouncedInputComponent()
{
    PrimaryComponentTick.bCanEverTick = false;

    DebounceDelay = 0.2f;       // Default debounce delay in seconds
    Threshold = 0.05f;          // Default movement threshold
    LastProcessedValue = 0.0f;  // Initial value for comparison
}

void UDebouncedInputComponent::BeginPlay()
{
    Super::BeginPlay();
}

void UDebouncedInputComponent::UpdateValue(float NewValue)
{
    // Only process if the change exceeds the threshold
    if (FMath::Abs(NewValue - LastProcessedValue) >= Threshold)
    {
        // Clear any existing timer to reset debounce delay
        GetWorld()->GetTimerManager().ClearTimer(DebounceTimerHandle);
        GetWorld()->GetTimerManager().SetTimer(DebounceTimerHandle, this, &UDebouncedInputComponent::DebouncedUpdate, DebounceDelay, false);

        // Update the latest value to be processed
        LastProcessedValue = NewValue;
    }
}

void UDebouncedInputComponent::DebouncedUpdate()
{
    // Broadcast the debounced value
    OnDebouncedValueChanged.Broadcast(LastProcessedValue);
}

DebouncedInputComponent.h

#pragma once

#include "CoreMinimal.h"
#include "Components/ActorComponent.h"
#include "DebouncedInputComponent.generated.h"

DECLARE_DYNAMIC_MULTICAST_DELEGATE_OneParam(FOnDebouncedValueChanged, float, Value);

UCLASS(ClassGroup=(Custom), meta=(BlueprintSpawnableComponent))
class YOURPROJECT_API UDebouncedInputComponent : public UActorComponent
{
    GENERATED_BODY()

public:
    UDebouncedInputComponent();

    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category="Debounce Settings")
    float DebounceDelay;

    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category="Debounce Settings")
    float Threshold;

    UPROPERTY(BlueprintAssignable, Category="Debounce")
    FOnDebouncedValueChanged OnDebouncedValueChanged;

    // Call this function to update the value and apply debounce logic
    void UpdateValue(float NewValue);

protected:
    virtual void BeginPlay() override;

private:
    UPROPERTY()
    float LastProcessedValue;

    FTimerHandle DebounceTimerHandle;

    void DebouncedUpdate();
};