blaster/Source/Blaster/Weapon/Casing.cpp

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


#include "Casing.h"

#include "Kismet/GameplayStatics.h"
#include "Sound/SoundCue.h"

ACasing::ACasing()
{
	PrimaryActorTick.bCanEverTick = false;

	ShellEjectionImpulseMin = 8.f;
	ShellEjectionImpulseMax = 12.f;
	CasingMesh = CreateDefaultSubobject<UStaticMeshComponent>(TEXT("CasingMesh"));
	CasingMesh->SetCollisionResponseToChannel(ECC_Camera, ECR_Ignore);
	CasingMesh->SetCollisionResponseToChannel(ECC_Pawn, ECR_Ignore);
	CasingMesh->SetSimulatePhysics(true);
	CasingMesh->SetEnableGravity(true);
	CasingMesh->SetNotifyRigidBodyCollision(true);
	SetRootComponent(CasingMesh);
}

void ACasing::BeginPlay()
{
	Super::BeginPlay();

	CasingMesh->OnComponentHit.AddDynamic(this, &ACasing::OnHit);
	CasingMesh->AddImpulse(GetActorForwardVector() * FMath::RandRange(ShellEjectionImpulseMin, ShellEjectionImpulseMax));

	SetLifeSpan(5.f);
}

void ACasing::OnHit(UPrimitiveComponent* HitComp, AActor* OtherActor, UPrimitiveComponent* OtherComp, FVector NormalImpulse, const FHitResult& Hit)
{
	if (ShellSound)
	{
		UGameplayStatics::PlaySoundAtLocation(this, ShellSound, GetActorLocation());
	}

	// Disable hit event so that sound won't play multiple times
	CasingMesh->SetNotifyRigidBodyCollision(false);
}