USightSystem.h

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// Copyright (c) 2025 Doppleddiggong. All rights reserved. Unauthorized copying, modification, or distribution of this file, via any medium is strictly prohibited. Proprietary and confidential.
 
#pragma once
 
#include "CoreMinimal.h"
#include "Components/ActorComponent.h"
#include "USightSystem.generated.h"
 
DECLARE_DYNAMIC_MULTICAST_DELEGATE_OneParam(FOnSightDetect, bool, Target);
 
UCLASS(Blueprintable, BlueprintType, ClassGroup=(Dopple), meta=(BlueprintSpawnableComponent) )
class LATTELIBRARY_API USightSystem : public UActorComponent
{
    GENERATED_BODY()
 
public: 
    USightSystem();
 
protected:
    virtual void BeginPlay() override;
 
public: 
    virtual void TickComponent(float DeltaTime, ELevelTick TickType, FActorComponentTickFunction* ThisTickFunction) override;
 
    UFUNCTION(BlueprintCallable)
    void InitSightSystem(class AActor* TargetActor, const float SightLength, const float SightAngle);
    
private:
    void SightLineTrace(const float InLength, const float InAngle) const;
    bool DetectSightLength(const float InLength) const;
    bool DetectSightAngle(const float InAngle) const;
 
    void AddElapsedTime();  
    float LerpAlpha() const;
    
public:
    UPROPERTY(BlueprintAssignable, Category="Events")
    FOnSightDetect OnSightDetect;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category="Debug")
    bool bDrawDebugLine = false;
    
private:
    UPROPERTY()
    class AActor* OwnerActor;
    
    UPROPERTY()
    class AActor* TargetActor;
 
    bool DetectTarget = false;
    float SightLength = 1000.0f;
    float SightAngle = 45.0f;
    float Duration = 1.0f;
    float ElapsedTime = 0.0f;
};