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


#include "MHealthComponent.h"
#include "MGameMode.h"

UMHealthComponent::UMHealthComponent()
{
	DefaultHealth = 100.f;
	bIsDead = false;
	bIsInvincible = false;
}


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

	AActor* ComponentOwner = GetOwner();
	if(ComponentOwner)
		ComponentOwner->OnTakeAnyDamage.AddDynamic(this, &UMHealthComponent::HandleTakeAnyDamage);

	Health = DefaultHealth;
}


void UMHealthComponent::HandleTakeAnyDamage(AActor* DamagedActor, float Damage, const class UDamageType* DamageType, class AController* InstigatedBy, AActor* DamageCauser)
{
	if(bIsDead)
		return;

	if(!bIsInvincible)
		Health = FMath::Clamp(Health - Damage, 0.f, DefaultHealth);
	bIsDead = Health <= 0.f;
	OnHealthChanged.Broadcast(this, Health, -(Health - Damage), DamageType, InstigatedBy, DamageCauser);

	if(bIsDead)
	{
		AMGameMode* GM = Cast<AMGameMode>(GetWorld()->GetAuthGameMode());
		if(GM)
		{
			GM->OnActorKilled.Broadcast(DamagedActor, DamageCauser, InstigatedBy);
		}

		OnActorDeath.Broadcast(this, DamagedActor, DamageCauser);
	}
}

float UMHealthComponent::GetHealthRemappedInRange(float Min, float Max)
{
	const FVector2D InputRange(0.f, DefaultHealth);
	const FVector2D OutputRange(Min, Max);
	return FMath::GetMappedRangeValueClamped(InputRange, OutputRange, Health);
}


void UMHealthComponent::Heal(float HealAmount)
{
	if(HealAmount <= 0.f || bIsDead || Health <= 0.f)
		return;

	Health = FMath::Clamp(Health + HealAmount, 0.f, DefaultHealth);
	OnHealthChanged.Broadcast(this, Health, HealAmount, nullptr, nullptr, nullptr);
}