DamageNumberWidget.h

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// Fill out your copyright notice in the Description page of Project Settings.
 
#pragma once
 
#include "CoreMinimal.h"
#include "Animation/WidgetAnimation.h"
#include "Blueprint/UserWidget.h"
#include "Components/Image.h"
#include "Materials/MaterialInstanceDynamic.h"
#include "UI/UserWidgetBase.h"
#include "DamageNumberWidget.generated.h"
 
class UImage;
class UTextBlock;
class UDamageNumberWidget;
class UMaterialInstanceDynamic;
 
DECLARE_DYNAMIC_MULTICAST_DELEGATE_TwoParams(FOnDamageAnimFinished, UDamageNumberWidget*, NumberWidget, EWidgetState, State);
 
UCLASS()
class CK_UE_API UDamageNumberWidget : public UUserWidget
{
    GENERATED_BODY()
 
public:
    void PlayDamageAnimation();
 
public:
    FORCEINLINE void SetDamageTexture(UTexture2D* Texture)
    {
        DamageTexture->GetDynamicMaterial()->SetTextureParameterValue(TextureParamName, Texture);
    }
 
    FORCEINLINE void ClearDamageTexture()
    {
        DamageTexture->GetDynamicMaterial()->SetTextureParameterValue(TextureParamName, nullptr);
    }
 
    FORCEINLINE UImage* GetDamageTexture() const
    {
        return DamageTexture.Get();
    }
 
    FORCEINLINE UMaterialInstanceDynamic* GetDamageTextureMaterial() const
    {
        return DamageTexture ? DamageTexture->GetDynamicMaterial() : nullptr;
    }
 
protected:
    virtual void NativeTick(const FGeometry& MyGeometry, float InDeltaTime) override;
    virtual void NativeConstruct() override;
    virtual void NativeDestruct() override;
 
protected:
    UFUNCTION()
    void OnAnimFinished();
 
public:
    UPROPERTY(BlueprintAssignable, Category = "Widget|Animation")
    FOnDamageAnimFinished OnDamageAnimFinished;
 
protected:
    UPROPERTY(VisibleAnywhere, Transient, Category = "Widget|Animation", meta = (BindWidgetAnim))
    TObjectPtr<UWidgetAnimation> DamageAnim;
 
    UPROPERTY(BlueprintReadOnly, Category = "Widget|DamageText", meta = (BindWidget))
    TObjectPtr<UImage> DamageTexture;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Interp, Category = "Widget|DamageText", meta = (ClampMin = "0.0", ClampMax = "1.0"))
    float WhitenAmount = 0.0f;
 
    UPROPERTY(EditAnywhere, Category = "Widget|DamageText")
    FName MaterialParamName = "WhitenAmount";
 
    UPROPERTY(EditAnywhere, Category = "Widget|DamageText")
    FName TextureParamName = "DamageTexture";
 
protected:
    UPROPERTY(Transient)
    TObjectPtr<UMaterialInstanceDynamic> DamageTextureMaterial;
};