First commit

Source/ProjectLighthouse/ProjectLighthouseProjectile.cpp

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+// Copyright Epic Games, Inc. All Rights Reserved.
+
+#include "ProjectLighthouseProjectile.h"
+#include "GameFramework/ProjectileMovementComponent.h"
+#include "Components/SphereComponent.h"
+
+AProjectLighthouseProjectile::AProjectLighthouseProjectile() 
+{
+	// 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, &AProjectLighthouseProjectile::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;
+
+	// Die after 3 seconds by default
+	InitialLifeSpan = 3.0f;
+}
+
+void AProjectLighthouseProjectile::OnHit(UPrimitiveComponent* HitComp, AActor* OtherActor, UPrimitiveComponent* OtherComp, FVector NormalImpulse, const FHitResult& Hit)
+{
+	// Only add impulse and destroy projectile if we hit a physics
+	if ((OtherActor != nullptr) && (OtherActor != this) && (OtherComp != nullptr) && OtherComp->IsSimulatingPhysics())
+	{
+		OtherComp->AddImpulseAtLocation(GetVelocity() * 100.0f, GetActorLocation());
+
+		Destroy();
+	}
+}