CameraZoomComponent.h

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// Fill out your copyright notice in the Description page of Project Settings.
 
#pragma once
 
#include "CoreMinimal.h"
#include "Camera/GameCameraManager.h"
#include "Components/ActorComponent.h"
#include "Interface/Camera/CameraBehaviorInterface.h"
#include "CameraZoomComponent.generated.h"
 
 
UCLASS(ClassGroup=(Camera), meta=(BlueprintSpawnableComponent))
class CK_UE_API UCameraZoomComponent : public UActorComponent, public ICameraBehaviorInterface
{
    GENERATED_BODY()
 
public:
    UCameraZoomComponent();
 
public:
    virtual void BeginPlay() override;
 
public:
    virtual void UpdateCameraBehavior(AGameCameraManager* CameraManager, float DeltaTime) override;
 
    UFUNCTION(BlueprintCallable, Category = "Camera|Distance")
    FORCEINLINE void AdjustDistance(float WheelDelta)
    {
        TargetDistance = FMath::Clamp(TargetDistance - WheelDelta * ZoomSpeed, GetZoomMin(), GetZoomMax());
    }
 
    UFUNCTION(BlueprintCallable, Category = "Camera|Distance")
    FORCEINLINE void SetTargetDistance(float NewTargetDistance)
    {
        TargetDistance = FMath::Clamp(NewTargetDistance, GetZoomMin(), GetZoomMax());
    }
 
    UFUNCTION(BlueprintCallable, Category = "Camera|Distance")
    FORCEINLINE void SetTargetDistanceToMax()
    {
        TargetDistance = GetZoomMax();
    }
 
    UFUNCTION(BlueprintPure, Category = "Camera|Distance")
    FORCEINLINE float GetZoomMax() const
    {
        return Cast<AGameCameraManager>(GetOwner())->BaseDistance * ZoomMaxRatio;
    }
 
    UFUNCTION(BlueprintPure, Category = "Camera|Distance")
    FORCEINLINE float GetZoomMin() const
    {
        return Cast<AGameCameraManager>(GetOwner())->BaseDistance * ZoomMinRatio;
    }
 
    UFUNCTION(BlueprintPure, Category = "Camera|Distance")
    FORCEINLINE float GetTargetDistance() const
    {
        return TargetDistance;
    }
 
    UFUNCTION(BlueprintPure, Category = "Camera|Distance")
    FORCEINLINE float GetCurrentDistance() const
    {
        return CurrentDistance;
    }
 
protected:
    UPROPERTY(EditDefaultsOnly, Category = "Camera|Distance", meta = (ClampMin = "20.0", ClampMax = "80.0"))
    float ZoomSpeed = 30.0f;
 
    UPROPERTY(EditDefaultsOnly, Category = "Camera|Distance", meta = (ClampMin = "3.0", ClampMax = "10.0"))
    float ZoomAcceleration = 5.0f;
 
    UPROPERTY(EditDefaultsOnly, Category = "Camera|Distance", meta = (ClampMin = "3.0", ClampMax = "10.0"))
    float ZoomDeceleration = 5.0f;
 
    UPROPERTY(EditDefaultsOnly, Category = "Camera|Distance", meta = (ClampMin = "0.0", ClampMax = "3.0"))
    float ZoomMaxRatio = 1.0f;
 
    UPROPERTY(EditDefaultsOnly, Category = "Camera|Distance", meta = (ClampMin = "0.0", ClampMax = "1.0"))
    float ZoomMinRatio = 0.3f;
 
private:
    float CurrentDistance = 0.0f;
    float TargetDistance = 0.0f;
};