Setup NPC director

Source/NakedDesire/Stats/StatsManager.cpp

@@ -54,7 +54,7 @@ float UStatsManager::ComputeObservedExposureRate()
 
 	for (int32 i = Observers.Num() - 1; i >= 0; --i)
 	{
-		AActor* Observer = Observers[i].Get();
+		AActor* Observer = Observers[i].Actor.Get();
 		if (!Observer)
 		{
 			Observers.RemoveAtSwap(i);
@@ -64,7 +64,8 @@ float UStatsManager::ComputeObservedExposureRate()
 		const float Exposure = OwnerCharacter->GetObservedExposureFrom(Observer->GetActorLocation(), Observer);
 		if (Exposure > 0.0f)
 		{
-			SumNormalizedExposure += Exposure / MaxObservedExposure;
+			// Weight by NPC type (§10.2): a Stalker's stare contributes more than a Walker's glance.
+			SumNormalizedExposure += (Exposure / MaxObservedExposure) * Observers[i].Weight;
 			++ActiveObservers;
 		}
 	}
@@ -83,23 +84,27 @@ void UStatsManager::Init(UClothingManager* InClothingManager)
 	ClothingManager = InClothingManager;
 }
 
-void UStatsManager::SetObserved(const bool bObserved, AActor* Observer)
+void UStatsManager::SetObserved(const bool bObserved, AActor* Observer, const float Weight)
 {
 	if (!Observer)
 		return;
 
+	const int32 ExistingIndex = Observers.IndexOfByPredicate(
+		[Observer](const FObserverEntry& Entry) { return Entry.Actor == Observer; });
+
 	bool bChanged = false;
 	if (bObserved)
 	{
-		if (!Observers.Contains(Observer))
+		if (ExistingIndex == INDEX_NONE)
 		{
-			Observers.Add(Observer);
+			Observers.Add({ Observer, Weight });
 			bChanged = true;
 		}
 	}
-	else
+	else if (ExistingIndex != INDEX_NONE)
 	{
-		bChanged = Observers.Remove(Observer) > 0;
+		Observers.RemoveAtSwap(ExistingIndex);
+		bChanged = true;
 	}
 
 	if (bChanged)
@@ -109,9 +114,9 @@ void UStatsManager::SetObserved(const bool bObserved, AActor* Observer)
 int32 UStatsManager::GetObserverCount() const
 {
 	int32 Count = 0;
-	for (const TWeakObjectPtr<AActor>& Observer : Observers)
+	for (const FObserverEntry& Observer : Observers)
 	{
-		if (Observer.IsValid())
+		if (Observer.Actor.IsValid())
 			++Count;
 	}
 	return Count;

Source/NakedDesire/Stats/StatsManager.h

@@ -45,8 +45,9 @@ public:
 
 	// Called by NPCAIController when an NPC gains or loses sight of the player. Observer is the
 	// observing pawn; its live location is re-traced each tick to weight embarrassment by the
-	// body parts that observer can actually see (GDD §7.1).
-	void SetObserved(bool bObserved, AActor* Observer);
+	// body parts that observer can actually see (GDD §7.1). Weight is the observer's NPC-type
+	// multiplier (§10.2) — Walkers read low, Stalkers high; ignored on the un-observe path.
+	void SetObserved(bool bObserved, AActor* Observer, float Weight = 1.0f);
 
 	// Number of NPCs currently perceiving the player (used by commission objectives, §13.4).
 	UFUNCTION(BlueprintPure)
@@ -84,7 +85,15 @@ private:
 	UPROPERTY()
 	TObjectPtr<ANakedDesireCharacter> OwnerCharacter;
 
-	// NPCs currently perceiving the player (added/removed via SetObserved). Weak so a destroyed
-	// observer drops out without dangling; stale entries are compacted during the tick.
-	TArray<TWeakObjectPtr<AActor>> Observers;
+	// One perceiving NPC and its observation weight (§10.2). Weak so a destroyed observer drops
+	// out without dangling.
+	struct FObserverEntry
+	{
+		TWeakObjectPtr<AActor> Actor;
+		float Weight = 1.0f;
+	};
+
+	// NPCs currently perceiving the player (added/removed via SetObserved). Stale entries are
+	// compacted during the tick.
+	TArray<FObserverEntry> Observers;
 };