// Copyright 1998-2015 Epic Games, Inc. All Rights Reserved.

#include "FPSTest.h"
#include "FPSTestProjectile.h"
#include "GameFramework/ProjectileMovementComponent.h"

AFPSTestProjectile::AFPSTestProjectile(const FObjectInitializer& ObjectInitializer)
    : Super(ObjectInitializer)
{
    //SetActorTickEnabled(true);
    PrimaryActorTick.bCanEverTick = true;
    // Use a sphere as a simple collision representation
    CollisionComp = CreateDefaultSubobject<USphereComponent>(TEXT("SphereComp"));
    CollisionComp->InitSphereRadius(5.0f);
    CollisionComp->BodyInstance.SetCollisionProfileName("Projectile");
    CollisionComp->OnComponentHit.AddDynamic(this, &AFPSTestProjectile::OnHit);     // set up a notification for when this component hits something blocking

    // Players can't walk on it
    CollisionComp->SetWalkableSlopeOverride(FWalkableSlopeOverride(WalkableSlope_Unwalkable, 0.f));
    CollisionComp->CanCharacterStepUpOn = ECB_No;

    // Set as root component
    RootComponent = CollisionComp;

    // Use a ProjectileMovementComponent to govern this projectile's movement
    ProjectileMovement = CreateDefaultSubobject<UProjectileMovementComponent>(TEXT("ProjectileComp"));
    ProjectileMovement->UpdatedComponent = CollisionComp;
    ProjectileMovement->InitialSpeed = 3000.f;
    ProjectileMovement->MaxSpeed = 3000.f;
    ProjectileMovement->bRotationFollowsVelocity = true;
    ProjectileMovement->bShouldBounce = true;

    //Particles!
    Particles = CreateDefaultSubobject<UParticleSystemComponent>(TEXT("Particles"));
    Particles->SetRelativeLocation(FVector::ZeroVector);
    Particles->AttachTo(RootComponent);


    static ConstructorHelpers::FObjectFinder<UParticleSystem> ParticlesInAssets(TEXT("ParticleSystem'/Game/FirstPerson/Particles/P_OrbGlowLights2.P_OrbGlowLights2'"));

    Particles->SetTemplate(ParticlesInAssets.Object);

    //Particles->ActivateSystem(true);

    // Die after 3 seconds by default
    //InitialLifeSpan = 3.0f;
}

void AFPSTestProjectile::Tick(float Delta)
{
    Super::Tick(Delta);
    Particles->SetWorldLocationAndRotation(RootComponent->GetComponentLocation(), RootComponent->GetComponentRotation());
}

void AFPSTestProjectile::OnHit(AActor* OtherActor, UPrimitiveComponent* OtherComp, FVector NormalImpulse, const FHitResult& Hit)
{
    // Only add impulse and destroy projectile if we hit a physics
    if ((OtherActor != NULL) && (OtherActor != this) && (OtherComp != NULL) && OtherComp->IsSimulatingPhysics())
    {
        OtherComp->AddImpulseAtLocation(GetVelocity() * 100.0f, GetActorLocation());

        //Destroy();
    }
}