// Copyright 1998-2016 Epic Games, Inc. All Rights Reserved.

#include "BatteryGame.h"
#include "BatteryGameCharacter.h"
#include "Pickup.h"

//////////////////////////////////////////////////////////////////////////
// ABatteryGameCharacter

ABatteryGameCharacter::ABatteryGameCharacter()
{
    // Set size for collision capsule
    GetCapsuleComponent()->InitCapsuleSize(42.f, 96.0f);

    // set our turn rates for input
    BaseTurnRate = 45.f;
    BaseLookUpRate = 45.f;

    // Don't rotate when the controller rotates. Let that just affect the camera.
    bUseControllerRotationPitch = false;
    bUseControllerRotationYaw = false;
    bUseControllerRotationRoll = false;

    // Configure character movement
    GetCharacterMovement()->bOrientRotationToMovement = true; // Character moves in the direction of input...
    GetCharacterMovement()->RotationRate = FRotator(0.0f, 540.0f, 0.0f); // ...at this rotation rate
    GetCharacterMovement()->JumpZVelocity = 600.f;
    GetCharacterMovement()->AirControl = 0.2f;

    // Create a camera boom (pulls in towards the player if there is a collision)
    CameraBoom = CreateDefaultSubobject<USpringArmComponent>(TEXT("CameraBoom"));
    CameraBoom->AttachTo(RootComponent);
    CameraBoom->TargetArmLength = 300.0f; // The camera follows at this distance behind the character
    CameraBoom->bUsePawnControlRotation = true; // Rotate the arm based on the controller

    // Create a follow camera
    FollowCamera = CreateDefaultSubobject<UCameraComponent>(TEXT("FollowCamera"));
    FollowCamera->AttachTo(CameraBoom, USpringArmComponent::SocketName); // Attach the camera to the end of the boom and let the boom adjust to match the controller orientation
    FollowCamera->bUsePawnControlRotation = false; // Camera does not rotate relative to arm

    // Note: The skeletal mesh and anim blueprint references on the Mesh component (inherited from Character)
    // are set in the derived blueprint asset named MyCharacter (to avoid direct content references in C++)

    CollectionSphere = CreateDefaultSubobject<USphereComponent>(TEXT("CollectionSphere"));
    CollectionSphere->AttachTo(RootComponent);
    CollectionSphere->SetSphereRadius(200.0f);
}

//////////////////////////////////////////////////////////////////////////
// Input

void ABatteryGameCharacter::SetupPlayerInputComponent(class UInputComponent* InputComponent)
{
    // Set up gameplay key bindings
    check(InputComponent);
    InputComponent->BindAction("Jump", IE_Pressed, this, &ACharacter::Jump);
    InputComponent->BindAction("Jump", IE_Released, this, &ACharacter::StopJumping);

    InputComponent->BindAction("Collect", IE_Pressed, this, &ABatteryGameCharacter::CollectPickups);

    InputComponent->BindAxis("MoveForward", this, &ABatteryGameCharacter::MoveForward);
    InputComponent->BindAxis("MoveRight", this, &ABatteryGameCharacter::MoveRight);

    // We have 2 versions of the rotation bindings to handle different kinds of devices differently
    // "turn" handles devices that provide an absolute delta, such as a mouse.
    // "turnrate" is for devices that we choose to treat as a rate of change, such as an analog joystick
    InputComponent->BindAxis("Turn", this, &APawn::AddControllerYawInput);
    InputComponent->BindAxis("TurnRate", this, &ABatteryGameCharacter::TurnAtRate);
    InputComponent->BindAxis("LookUp", this, &APawn::AddControllerPitchInput);
    InputComponent->BindAxis("LookUpRate", this, &ABatteryGameCharacter::LookUpAtRate);

    // handle touch devices
    InputComponent->BindTouch(IE_Pressed, this, &ABatteryGameCharacter::TouchStarted);
    InputComponent->BindTouch(IE_Released, this, &ABatteryGameCharacter::TouchStopped);
}


void ABatteryGameCharacter::TouchStarted(ETouchIndex::Type FingerIndex, FVector Location)
{
    // jump, but only on the first touch
    if (FingerIndex == ETouchIndex::Touch1)
    {
        Jump();
    }
}

void ABatteryGameCharacter::TouchStopped(ETouchIndex::Type FingerIndex, FVector Location)
{
    if (FingerIndex == ETouchIndex::Touch1)
    {
        StopJumping();
    }
}

void ABatteryGameCharacter::TurnAtRate(float Rate)
{
    // calculate delta for this frame from the rate information
    AddControllerYawInput(Rate * BaseTurnRate * GetWorld()->GetDeltaSeconds());
}

void ABatteryGameCharacter::LookUpAtRate(float Rate)
{
    // calculate delta for this frame from the rate information
    AddControllerPitchInput(Rate * BaseLookUpRate * GetWorld()->GetDeltaSeconds());
}

void ABatteryGameCharacter::MoveForward(float Value)
{
    if ((Controller != NULL) && (Value != 0.0f))
    {
        // find out which way is forward
        const FRotator Rotation = Controller->GetControlRotation();
        const FRotator YawRotation(0, Rotation.Yaw, 0);

        // get forward vector
        const FVector Direction = FRotationMatrix(YawRotation).GetUnitAxis(EAxis::X);
        AddMovementInput(Direction, Value);
    }
}

void ABatteryGameCharacter::MoveRight(float Value)
{
    if ( (Controller != NULL) && (Value != 0.0f) )
    {
        // find out which way is right
        const FRotator Rotation = Controller->GetControlRotation();
        const FRotator YawRotation(0, Rotation.Yaw, 0);

        // get right vector
        const FVector Direction = FRotationMatrix(YawRotation).GetUnitAxis(EAxis::Y);
        // add movement in that direction
        AddMovementInput(Direction, Value);
    }
}

void ABatteryGameCharacter::CollectPickups()
{
    TArray<AActor*> CollectedItems;
    CollectionSphere->GetOverlappingActors(CollectedItems);

    for (int32 iCollected = 0; iCollected < CollectedItems.Num(); ++iCollected)
    {
        APickup* TestPickup = Cast<APickup>(CollectedItems[iCollected]);
        if (TestPickup && !TestPickup->IsPendingKill() && TestPickup->IsActive())
        {
            TestPickup->Collect();
            TestPickup->SetActive(false);
        }
    }
}