AzureAbyss/Source/the_twilight_abyss/TurnBasedCombatV2/HoldToInitCombat.cpp

// Fill out your copyright notice in the Description page of Project Settings.


#include "HoldToInitCombat.h"
#include "TurnBaseCombatV2.h"
#include "Blueprint/UserWidget.h"


// Sets default values for this component's properties
UHoldToInitCombat::UHoldToInitCombat()
{
	PrimaryComponentTick.bCanEverTick = true;
	if (InitCombatWidgetClass == nullptr)
	{
		static ConstructorHelpers::FClassFinder<UUserWidget> HUDWidgetClass(TEXT("/Game/Blueprints/Combat_UI/CombatInit"));
		InitCombatWidgetClass = HUDWidgetClass.Class;
	}
	if (GunEffect == nullptr)
	{
		static ConstructorHelpers::FObjectFinder<UNiagaraSystem> GunEffectAsset(TEXT("/Game/Blueprints/Combat_UI/NS_GunEffect"));
		GunEffect = GunEffectAsset.Object;
	}
}


// Called when the game starts
void UHoldToInitCombat::BeginPlay()
{
	Super::BeginPlay();
	InitCombatWidget = CreateWidget<UUserWidget>(GetWorld(), InitCombatWidgetClass);

	UInputComponent* PlayerInputComponent = GetWorld()->GetFirstPlayerController()->InputComponent;
	//Bind Right Mouse Button to the function OnRightClickDown
	PlayerInputComponent->BindAction("RightClick", IE_Pressed, this, &UHoldToInitCombat::OnRightClickDown);
	//Bind Right Mouse Button to the function OnRightClickUp
	PlayerInputComponent->BindAction("RightClick", IE_Released, this, &UHoldToInitCombat::OnRightClickUp);
}


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

	// //If the player is holding down the right mouse button for 3 seconds, then the player will enter combat mode
	// if (bRightClickDown && RightClickDownTime < 0.1f)
	// {
	// 	RightClickDownTime += DeltaTime;
	// }
	// else if (bRightClickDown && RightClickDownTime >= 0.1f)
	// {
	// 	//Enter Combat Mode
	// 	Cast<ATurnBaseCombatV2>(GetWorld()->GetGameState())->StartCombat(TargetEnemy);
	// 	//UBlackboardComponent* TargetEnemyBlackboard = Cast<UBlackboardComponent>(TargetEnemy->GetComponentByClass(UBlackboardComponent::StaticClass()));
	// 	//TargetEnemyBlackboard->SetValueAsBool("IsInCombat", true);
	// 	OnRightClickUp();
	// }
	if (bRightClickDown)
	{
		Cast<ATurnBaseCombatV2>(GetWorld()->GetGameState())->StartCombat(TargetEnemy);
		OnRightClickUp();
	}
}

void UHoldToInitCombat::OnRightClickDown()
{
	if (AActor* RightClickHit = LookingAtEnemy(); RightClickHit != nullptr)
	{
		TargetEnemy = RightClickHit;
		bRightClickDown = true;
		//InitCombatWidget->AddToViewport();
	}
	
	if (GunEffect)
	{
		//Get Player Actor
		const AActor* PlayerActor = GetWorld()->GetFirstPlayerController()->GetPawn();
		//Get Static Mesh Location on the player actor
		const UStaticMeshComponent* GunComponent = Cast<UStaticMeshComponent>(PlayerActor->GetComponentsByTag(UPrimitiveComponent::StaticClass(), FName("Gun"))[0]);
		const FVector GunLocationOffset = GunComponent->GetSocketTransform("Muzzle").TransformPosition(FVector(-100, 0, 0));
		UNiagaraFunctionLibrary::SpawnSystemAtLocation(GetWorld(), GunEffect, GunLocationOffset, PlayerActor->GetActorRotation());
	}
}

void UHoldToInitCombat::OnRightClickUp()
{
	bRightClickDown = false;
	RightClickDownTime = 0.0f;
	if (InitCombatWidget->IsInViewport())
	{
		InitCombatWidget->RemoveFromParent();
	}
}

AActor* UHoldToInitCombat::LookingAtEnemy() const
{
	FVector Start = GetOwner()->GetActorLocation();
	FVector End = GetOwner()->GetActorForwardVector() * 1000.0f + Start;
	FCollisionQueryParams CollisionParams;
	CollisionParams.AddIgnoredActor(GetOwner());
	if (FHitResult HitResult; GetWorld()->LineTraceSingleByChannel(HitResult, Start, End, ECC_Pawn, CollisionParams))
	{
		//DrawDebugLine(GetWorld(), Start, End, FColor::Green, false, 5.0f, 0, 10.0f);
		if (HitResult.GetActor()->Tags.Contains("Enemy"))
		{
			return HitResult.GetActor();
		}
		if (HitResult.GetActor()->Tags.Contains("Break"))
		{
			HitResult.GetActor()->Destroy();
			return nullptr;
		}
	}
	//DrawDebugLine(GetWorld(), Start, End, FColor::Red, false, 5.0f, 0, 10.0f);
	return nullptr;
}