(Unreal : Tutorial) 15. 플레이어 입력 및 폰

UCLASS()
class TUTORIAL_API AMyPawn : public APawn
{
	// ...

	UPROPERTY(EditAnywhere)
	USceneComponent* OurVisibleComponent;
	// USceneComponent : 위치, 회전정보는 갖으나, Mesh, 충돌은 없어 가볍다. 더미 부모 클래스로 많이 사용됨.
};

AMyPawn::AMyPawn()
{
 	// Set this pawn to call Tick() every frame.  You can turn this off to improve performance if you don't need it.
	PrimaryActorTick.bCanEverTick = true;

	AutoPossessPlayer = EAutoReceiveInput::Player0;

	RootComponent = CreateDefaultSubobject<USceneComponent>(TEXT("RootComponent"));

	UCameraComponent* OurCamera = CreateDefaultSubobject<UCameraComponent>(TEXT("OurCamera"));
	OurCamera->SetupAttachment(RootComponent);
	OurCamera->SetRelativeLocation(FVector(-250.0f, 0.0f, 250.f));
	OurCamera->SetRelativeRotation(FRotator(-45.0f, 0.0f, 0.f));

	OurVisibleComponent = CreateDefaultSubobject<UStaticMeshComponent>(TEXT("OurVisibleComponent"));
	OurVisibleComponent->SetupAttachment(RootComponent);
}

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

#pragma once

#include "CoreMinimal.h"
#include "GameFramework/Pawn.h"
#include "MyPawn.generated.h"

UCLASS()
class TUTORIAL_API AMyPawn : public APawn
{
	GENERATED_BODY()

public:
	// Sets default values for this pawn's properties
	AMyPawn();

protected:
	// Called when the game starts or when spawned
	virtual void BeginPlay() override;

public:	
	// Called every frame
	virtual void Tick(float DeltaTime) override;

	// Called to bind functionality to input
	virtual void SetupPlayerInputComponent(class UInputComponent* PlayerInputComponent) override;

	UPROPERTY(EditAnywhere)
	USceneComponent* OurVisibleComponent;
	// USceneComponent : 위치, 회전정보는 갖으나, Mesh, 충돌은 없어 가볍다. 더미 부모 클래스로 많이 사용됨.

	void Move_XAxis(float AxisValue);
	void Move_YAxis(float AxisValue);
	void StartGrowing();
	void StopGrowing();

	FVector CurrentVelocity;
	bool bGrowing;
};

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


#include "MyPawn.h"
#include <Engine/Classes/Camera/CameraComponent.h>

// Sets default values
AMyPawn::AMyPawn()
{
 	// Set this pawn to call Tick() every frame.  You can turn this off to improve performance if you don't need it.
	PrimaryActorTick.bCanEverTick = true;

	AutoPossessPlayer = EAutoReceiveInput::Player0;

	RootComponent = CreateDefaultSubobject<USceneComponent>(TEXT("RootComponent"));

	UCameraComponent* OurCamera = CreateDefaultSubobject<UCameraComponent>(TEXT("OurCamera"));
	OurCamera->SetupAttachment(RootComponent);
	OurCamera->SetRelativeLocation(FVector(-250.0f, 0.0f, 250.f));
	OurCamera->SetRelativeRotation(FRotator(-45.0f, 0.0f, 0.f));

	OurVisibleComponent = CreateDefaultSubobject<UStaticMeshComponent>(TEXT("OurVisibleComponent"));
	OurVisibleComponent->SetupAttachment(RootComponent);
}

// Called when the game starts or when spawned
void AMyPawn::BeginPlay()
{
	Super::BeginPlay();
	
}

// Called every frame
void AMyPawn::Tick(float DeltaTime)
{
	Super::Tick(DeltaTime);

	{
		float CurrentScale = OurVisibleComponent->GetComponentScale().X;
		if (bGrowing)
		{
			CurrentScale += DeltaTime;
		}
		else
		{
			CurrentScale -= DeltaTime * 0.5f;
		}
		CurrentScale = FMath::Clamp(CurrentScale, 1.0f, 2.0f);
		OurVisibleComponent->SetWorldScale3D(FVector(CurrentScale));
	}

	{
		if (!CurrentVelocity.IsZero())
		{
			FVector NewLocation = GetActorLocation() + (CurrentVelocity * DeltaTime);
			SetActorLocation(NewLocation);
		}
	}
}

// Called to bind functionality to input
void AMyPawn::SetupPlayerInputComponent(UInputComponent* PlayerInputComponent)
{
	Super::SetupPlayerInputComponent(PlayerInputComponent);

	PlayerInputComponent->BindAction("Grow", IE_Pressed, this, &AMyPawn::StartGrowing);
	PlayerInputComponent->BindAction("Grow", IE_Released, this, &AMyPawn::StopGrowing);

	PlayerInputComponent->BindAxis("Move_x", this, &AMyPawn::Move_XAxis);
	PlayerInputComponent->BindAxis("Move_y", this, &AMyPawn::Move_YAxis);
}

void AMyPawn::Move_XAxis(float AxisValue)
{
	// 입력된 값을 제한
	CurrentVelocity.X = FMath::Clamp(AxisValue, -1.0f, 1.0f) * 100.0f;
}

void AMyPawn::Move_YAxis(float AxisValue)
{
	CurrentVelocity.Y = FMath::Clamp(AxisValue, -1.0f, 1.0f) * 100.0f;
}

void AMyPawn::StartGrowing()
{
	bGrowing = true;
}

void AMyPawn::StopGrowing()
{
	bGrowing = false;
}