Rotate Healthbar to face Player Camera in Tick

Source/Nakatomi/EnemyCharacter.cpp

@@ -8,6 +8,8 @@
 #include "BehaviorTree/BehaviorTree.h"
 #include "BehaviorTree/BlackboardComponent.h"
 #include "BehaviorTree/BlackboardData.h"
+#include "Kismet/GameplayStatics.h"
+#include "Kismet/KismetMathLibrary.h"
 #include "UI/EnemyHealthbarUserWidget.h"
 
 #define COLLISION_WEAPON	ECC_GameTraceChannel1
@@ -78,6 +80,23 @@ void AEnemyCharacter::BeginPlay()
 	}
 }
 
+void AEnemyCharacter::Tick(float DeltaTime)
+{
+	Super::Tick(DeltaTime);
+
+	APlayerCharacter* PlayerCharacter = Cast<APlayerCharacter>(UGameplayStatics::GetPlayerCharacter(GetWorld(), 0));
+	if (PlayerCharacter && HealthbarWidgetComponent->GetWidget())
+	{
+		FVector ActorLocation = GetActorLocation();
+
+		UCameraComponent* PlayerCamera = PlayerCharacter->GetCameraComponent();
+		FVector PlayerLocation = PlayerCamera->GetComponentTransform().GetLocation();
+
+		FRotator rotation = UKismetMathLibrary::FindLookAtRotation(ActorLocation, PlayerLocation);
+		HealthbarWidgetComponent->SetWorldRotation(rotation);
+	}
+}
+
 void AEnemyCharacter::PlayOnFireAnimations()
 {
 	Super::PlayOnFireAnimations();

Source/Nakatomi/EnemyCharacter.h

@@ -53,6 +53,9 @@ public:
 protected:
 	virtual void BeginPlay() override;
 
+public:
+	virtual void Tick(float DeltaTime) override;
+
 private:
 	virtual void PlayOnFireAnimations() override;
 	

Source/Nakatomi/PlayerCharacter.cpp

@@ -826,3 +826,8 @@ void APlayerCharacter::SetIsThrowing(bool bIsThrowing)
 {
 	IsThrowing = bIsThrowing;
 }
+
+UCameraComponent* APlayerCharacter::GetCameraComponent()
+{
+	return CameraComponent;
+}

Source/Nakatomi/PlayerCharacter.h

@@ -242,6 +242,8 @@ public:
 	UFUNCTION(BlueprintCallable)
 	void SetIsThrowing(bool bIsThrowing);
 
+	UCameraComponent* GetCameraComponent();
+
 protected:
 	virtual void CalculateHits(TArray<FHitResult>* hits, FVector* dir) override;
 

Source/Nakatomi/UI/EnemyHealthbarUserWidget.cpp

@@ -12,7 +12,8 @@ void UEnemyHealthbarUserWidget::BindOwner(AEnemyCharacter* NewOwner)
 	if (Owner)
 	{
 		auto healthComponent = Owner->GetHealthComponent(); 
-		healthComponent->OnDamaged.BindUFunction(this, "UpdateHealthbar");		
+		healthComponent->OnDamaged.BindUFunction(this, "UpdateHealthbar");
+		UpdateHealthbar();
 	}
 }