Rework interaction system

Source/NakedDesire/Interaction/InteractionComponent.h

@@ -0,0 +1,64 @@
+#pragma once
+
+#include "CoreMinimal.h"
+#include "Components/ActorComponent.h"
+#include "InteractionComponent.generated.h"
+
+DECLARE_DYNAMIC_MULTICAST_DELEGATE_OneParam(FOnFocusedInteractableChanged, AActor*, NewFocused);
+
+UCLASS(ClassGroup=(Custom), meta=(BlueprintSpawnableComponent))
+class NAKEDDESIRE_API UInteractionComponent : public UActorComponent
+{
+	GENERATED_BODY()
+
+public:
+	UInteractionComponent();
+	
+	virtual void BeginPlay() override;
+
+	// Call from interact input — sends server RPC if not authority
+	void Interact();
+
+	UFUNCTION(BlueprintPure)
+	AActor* GetFocusedInteractable() const { return FocusedInteractable.Get(); }
+
+	// Broadcasts whenever the focused (interactable) actor changes; nullptr = no target
+	UPROPERTY(BlueprintAssignable)
+	FOnFocusedInteractableChanged OnFocusedInteractableChanged;
+
+protected:
+
+	// Actors within this radius receive a proximity outline
+	UPROPERTY(EditDefaultsOnly, Category="Interaction")
+	float ProximityRadius = 350.f;
+
+	// Player must be within this distance to focus an interactable (must be <= ProximityRadius)
+	UPROPERTY(EditDefaultsOnly, Category="Interaction")
+	float InteractionDistance = 150.f;
+
+	// Minimum dot product between look direction and direction to target.
+	// cos(20°) ≈ 0.94 — lower values allow a wider look cone.
+	UPROPERTY(EditDefaultsOnly, Category="Interaction")
+	float LookDotThreshold = 0.9f;
+
+private:
+	FTimerHandle InteractionTimerHandle;
+
+	void UpdateInteraction();
+
+	TSet<TWeakObjectPtr<AActor>> NearbyInteractables;
+	TWeakObjectPtr<AActor> FocusedInteractable;
+
+	// Physics scan → update NearbyInteractables set → manage proximity outlines
+	void UpdateNearbyInteractables();
+
+	// Among nearby actors, find the one best matching look + distance conditions
+	void UpdateFocusedInteractable();
+
+	bool GetOwnerViewPoint(FVector& OutLocation, FRotator& OutRotation) const;
+
+	// Traces from the pawn's eye position (NOT the camera) to the target.
+	// Returns true only if nothing blocks the line — prevents exploiting the
+	// third-person camera to interact through walls by looking over them.
+	bool HasLineOfSightFromPawn(AActor* Target) const;
+};