From d8ca7f001ce9f4fae577f0de3f3fd1c341b4f588 Mon Sep 17 00:00:00 2001
From: Louis Hobbs <bazzadobs@live.co.uk>
Date: Wed, 14 Jun 2023 22:57:44 +0100
Subject: [PATCH] Add logic to Explode in Demolition Character

---
 Source/Nakatomi/DemolitionCharacter.cpp | 44 ++++++++++++++++++++++++-
 Source/Nakatomi/DemolitionCharacter.h   | 16 +++++++++
 2 files changed, 59 insertions(+), 1 deletion(-)

diff --git a/Source/Nakatomi/DemolitionCharacter.cpp b/Source/Nakatomi/DemolitionCharacter.cpp
index 96c141a..50bd389 100644
--- a/Source/Nakatomi/DemolitionCharacter.cpp
+++ b/Source/Nakatomi/DemolitionCharacter.cpp
@@ -2,8 +2,50 @@
 
 
 #include "DemolitionCharacter.h"
+#include <Kismet/GameplayStatics.h>
 
 void ADemolitionCharacter::Explode()
 {
-	UE_LOG(LogTemp, Warning, TEXT("BANG!"));
+	GetHealthComponent()->TakeDamage(this, this->GetHealthComponent()->GetMaxHealth(), nullptr, nullptr, nullptr);
+	
+	FActorSpawnParameters SpawnParameters;
+	SpawnParameters.SpawnCollisionHandlingOverride = ESpawnActorCollisionHandlingMethod::AlwaysSpawn;
+
+	if (ExplosionParticleSystem)
+	{
+		UGameplayStatics::SpawnEmitterAtLocation(this,
+												ExplosionParticleSystem,
+												this->ActorToWorld().GetLocation(),
+												FRotator::ZeroRotator,
+												true);
+	}
+
+	TArray<FOverlapResult> outOverlaps;
+	GetWorld()->OverlapMultiByObjectType(outOverlaps,
+										ActorToWorld().GetLocation(),
+										FQuat::Identity,
+										FCollisionObjectQueryParams::AllObjects,
+										FCollisionShape::MakeSphere(ExplosionRadius));
+
+	for (FOverlapResult Overlaps : outOverlaps)
+	{
+		if (auto healthComponent = Overlaps.GetActor()->GetComponentByClass<UHealthComponent>())
+		{
+			float distance = FVector::Distance(ActorToWorld().GetLocation(), Overlaps.GetActor()->ActorToWorld().GetLocation());
+			float scale = 1.f - (distance / ExplosionRadius);
+			healthComponent->TakeDamage(Overlaps.GetActor(), scale * MaxDamage, nullptr, nullptr, this);
+		}
+	}
+
+	if (FieldSystemActor)
+	{
+		FTransform transform;
+		transform.SetLocation(this->ActorToWorld().GetLocation());
+		auto field = GetWorld()->SpawnActor<AFieldSystemActor>(FieldSystemActor, transform, SpawnParameters);
+
+		if (field)
+		{
+			field->Destroy();
+		}
+	}
 }
diff --git a/Source/Nakatomi/DemolitionCharacter.h b/Source/Nakatomi/DemolitionCharacter.h
index ed023da..b7e305d 100644
--- a/Source/Nakatomi/DemolitionCharacter.h
+++ b/Source/Nakatomi/DemolitionCharacter.h
@@ -14,6 +14,22 @@ class NAKATOMI_API ADemolitionCharacter : public AEnemyCharacter
 {
 	GENERATED_BODY()
 	
+protected:
+	UPROPERTY(EditDefaultsOnly)
+	USoundBase* ExplosionSound;
+
+	UPROPERTY(EditDefaultsOnly)
+	TSubclassOf<class ANakatomiFieldSystemActor> FieldSystemActor;
+
+	UPROPERTY(EditDefaultsOnly)
+	UParticleSystem* ExplosionParticleSystem;
+
+	UPROPERTY(EditDefaultsOnly)
+	float ExplosionRadius = 500.f;
+
+	UPROPERTY(EditDefaultsOnly)
+	float MaxDamage = 150.f;
+
 public:
 
 	UFUNCTION()