Initial Agrarian Unreal project

Source/AgrarianGame/Variant_Combat/Gameplay/CombatDamageableBox.cpp

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+// Copyright Epic Games, Inc. All Rights Reserved.
+
+
+#include "CombatDamageableBox.h"
+#include "Components/StaticMeshComponent.h"
+#include "TimerManager.h"
+#include "Engine/World.h"
+
+ACombatDamageableBox::ACombatDamageableBox()
+{
+	PrimaryActorTick.bCanEverTick = false;
+
+	// create the mesh
+	RootComponent = Mesh = CreateDefaultSubobject<UStaticMeshComponent>(TEXT("Mesh"));
+
+	// set the collision properties
+	Mesh->SetCollisionProfileName(FName("BlockAllDynamic"));
+
+	// enable physics
+	Mesh->SetSimulatePhysics(true);
+
+	// disable navigation relevance so boxes don't affect NavMesh generation
+	Mesh->bNavigationRelevant = false;
+}
+
+void ACombatDamageableBox::RemoveFromLevel()
+{
+	// destroy this actor
+	Destroy();
+}
+
+void ACombatDamageableBox::EndPlay(EEndPlayReason::Type EndPlayReason)
+{
+	Super::EndPlay(EndPlayReason);
+
+	// clear the death timer
+	GetWorld()->GetTimerManager().ClearTimer(DeathTimer);
+}
+
+void ACombatDamageableBox::ApplyDamage(float Damage, AActor* DamageCauser, const FVector& DamageLocation, const FVector& DamageImpulse)
+{
+	// only process damage if we still have HP
+	if (CurrentHP > 0.0f)
+	{
+		// apply the damage
+		CurrentHP -= Damage;
+
+		// are we dead?
+		if (CurrentHP <= 0.0f)
+		{
+			HandleDeath();
+		}
+
+		// apply a physics impulse to the box, ignoring its mass
+		Mesh->AddImpulseAtLocation(DamageImpulse * Mesh->GetMass(), DamageLocation);
+
+		// call the BP handler to play effects, etc.
+		OnBoxDamaged(DamageLocation, DamageImpulse);
+	}
+}
+
+void ACombatDamageableBox::HandleDeath()
+{
+	// change the collision object type to Visibility so we ignore most interactions but still retain physics collisions
+	Mesh->SetCollisionObjectType(ECC_Visibility);
+
+	// call the BP handler to play effects, etc.
+	OnBoxDestroyed();
+
+	// set up the death cleanup timer
+	GetWorld()->GetTimerManager().SetTimer(DeathTimer, this, &ACombatDamageableBox::RemoveFromLevel, DeathDelayTime);
+}
+
+void ACombatDamageableBox::ApplyHealing(float Healing, AActor* Healer)
+{
+	// stub
+}
+
+void ACombatDamageableBox::NotifyDanger(const FVector& DangerLocation, AActor* DangerSource)
+{
+	// stub
+}
+