[End Result] Classic Camera C++ - CameraSwitchVolume.cpp

CameraSwitchVolume.cpp

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

#include "CameraSwitchVolume.h"
#include "Components/BoxComponent.h"
#include "Components/TextRenderComponent.h"
#include "PlayerCamera.h"
#include "GameFramework/Character.h"
#include "Kismet/GameplayStatics.h"



// Sets default values
ACameraSwitchVolume::ACameraSwitchVolume()
{
 	// Set this actor to call Tick() every frame.  You can turn this off to improve performance if you don't need it.
	PrimaryActorTick.bCanEverTick = true;
	
	// Box Collision
	BoxCollision = CreateDefaultSubobject<UBoxComponent>(TEXT("Box Collision"));
	RootComponent = BoxCollision;
	BoxCollision->SetBoxExtent(FVector(1.5f, 32.0f, 32.0f));
	
	// Setup Text Renders
	TextRenderNewCamera = CreateDefaultSubobject<UTextRenderComponent>(TEXT("Text Render New Camera"));
	TextRenderNewCamera->SetupAttachment(RootComponent);
	TextRenderNewCamera->SetText("New Camera Side");
	TextRenderNewCamera->SetHiddenInGame(true);
	TextRenderNewCamera->SetRelativeLocation(FVector(15.0f, 0.0f, 0.0f));
	TextRenderNewCamera->SetHorizontalAlignment(EHTA_Center);
	TextRenderNewCamera->SetVerticalAlignment(EVRTA_TextCenter);

	TextRenderPreviousCamera = CreateDefaultSubobject<UTextRenderComponent>(TEXT("Text Render Previous Camera"));
	TextRenderPreviousCamera->SetupAttachment(RootComponent);
	TextRenderPreviousCamera->SetText("Previous Camera Side");
	TextRenderPreviousCamera->SetHiddenInGame(true);
	TextRenderPreviousCamera->SetRelativeLocation(FVector(-15.0f, 0.0f, 0.0f));
	TextRenderPreviousCamera->SetRelativeRotation(FRotator(0.0f, 180.0f, 0.0f));
	TextRenderPreviousCamera->SetHorizontalAlignment(EHTA_Center);
	TextRenderPreviousCamera->SetVerticalAlignment(EVRTA_TextCenter);

}

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

	// Bind Overlap Event
	OnActorEndOverlap.AddDynamic(this, &ACameraSwitchVolume::OnEndOverlap);
	
}

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

}

// Construction Script
void ACameraSwitchVolume::OnConstruction(const FTransform& Transform)
{
	BoxCollision->SetBoxExtent(FVector(1.5f, VolumeWidth, VolumeHeight));
}

void ACameraSwitchVolume::OnEndOverlap(class AActor* ThisActor, class AActor* OtherActor)
{

	ACharacter* PlayerCharacter = UGameplayStatics::GetPlayerCharacter(GetWorld(), 0);
	APlayerController* PlayerController = UGameplayStatics::GetPlayerController(GetWorld(), 0);

	FViewTargetTransitionParams TransitionParams;

	// Toggle camera based on players x relative location

	if (PlayerCharacter && OtherActor == PlayerCharacter && PlayerController)
	{

		FVector PlayerRelativeLocation = GetTransform().InverseTransformPosition(PlayerCharacter->GetActorLocation());

		if (NewCamera && PlayerRelativeLocation.X > 0) // If player exits new camera side
		{
			PlayerController->SetViewTarget(NewCamera, TransitionParams);


		}

		if (PreviousCamera && PlayerRelativeLocation.X < 0) // If player exits previous camera side
		{
			PlayerController->SetViewTarget(PreviousCamera, TransitionParams);


		}



	}



}