// Copyright Voulz 2021-2025. All Rights Reserved.

#include "FaceCameraComponent.h"

#include "Engine/World.h"
#include "Kismet/GameplayStatics.h"
#include "Kismet/KismetMathLibrary.h"


// Sets default values for this component's properties
UFaceCameraComponent::UFaceCameraComponent()
{
	PrimaryComponentTick.bCanEverTick = true;
	bTickInEditor = true;
	bAutoActivate = true;
	PrimaryComponentTick.bStartWithTickEnabled = true;
}


void UFaceCameraComponent::MakeActorFaceCamera()
{
#if WITH_EDITOR
	if (GetWorld() != nullptr && (GetWorld()->WorldType == EWorldType::Editor || GetWorld()->WorldType == EWorldType::EditorPreview))
	{
		if (AActor* Owner = GetOwner())
		{
			const FRotator Rotation = UKismetMathLibrary::FindLookAtRotation(GetEditorCameraLocation(), Owner->GetActorLocation());
			Owner->SetActorRotation(FRotator(0.f, Rotation.Yaw, bAllowRoll ? Rotation.Pitch : 0.f) + AddedRotation);
		}
	}
	else
	{
#endif
		if (AActor* Owner = GetOwner())
		{
			if (const APlayerCameraManager* Manager = UGameplayStatics::GetPlayerCameraManager(GetWorld(), 0))
			{
				const FRotator Rotation = UKismetMathLibrary::FindLookAtRotation(Manager->GetCameraLocation(), Owner->GetActorLocation());
				Owner->SetActorRotation(FRotator(0.f, Rotation.Yaw, bAllowRoll ? Rotation.Pitch : 0.f) + AddedRotation);
			}
		}
#if WITH_EDITOR
	};
#endif
}

// Called every frame
void UFaceCameraComponent::TickComponent(float DeltaTime, ELevelTick TickType, FActorComponentTickFunction* ThisTickFunction)
{
	Super::TickComponent(DeltaTime, TickType, ThisTickFunction);

	if (bFaceCameraActive)
	{
		MakeActorFaceCamera();
	}
}

FVector UFaceCameraComponent::GetEditorCameraLocation() const
{
	if (const UWorld* World = GetWorld())
	{
		if (World->ViewLocationsRenderedLastFrame.Num() > 0)
		{
			return World->ViewLocationsRenderedLastFrame[0];
		}
	}
	return FVector();
}