EnemySpawnDefinition.h

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// Fill out your copyright notice in the Description page of Project Settings.
 
#pragma once
 
#include "Data/Flow/FlowDefinitionBase.h"
#include "Data/Flow/Enemy/MaterialTransitionDefinition.h"
#include "TimerManager.h"
#include "EnemySpawnDefinition.generated.h"
 
 
class AEnemyCharacterBase;
class UMaterialInterface;
class UMaterialInstanceDynamic;
class UWorld;
 
 
UCLASS(Blueprintable, BlueprintType, EditInlineNew, DefaultToInstanced, meta = (ShowWorldContextPin))
class CK_UE_API UEnemySpawnDefinition : public UFlowDefinitionBase
{
    GENERATED_BODY()
 
public:
    UFUNCTION(BlueprintCallable, Category = "Spawn")
    bool StartEnemySpawnFlow(AEnemyCharacterBase* InEnemyCharacter);
 
    UFUNCTION(BlueprintPure, Category = "Material")
    FORCEINLINE FMaterialOpacityTransition GetSpawnEnterMaterialTransition() const
    {
        return SpawnEnterMaterialTransition;
    }
 
protected:
    virtual void HandleFlowStarted(UObject* InFlowOwner) override;
    virtual void HandleFlowFinished() override;
    virtual void HandleFlowReset() override;
    virtual void PlaySpawnFlow_Implementation(AEnemyCharacterBase* InEnemyCharacter);
 
protected:
    UFUNCTION(BlueprintNativeEvent, Category = "Spawn")
    void PlaySpawnFlow(AEnemyCharacterBase* InEnemyCharacter);
 
private:
    void ApplyMaterialTransition(AEnemyCharacterBase* InEnemyCharacter, const FMaterialOpacityTransition& InTransition);
    void UpdateMaterialTransition();
    void ClearMaterialTransitionTimer();
    void RestoreMaterialSlots();
 
protected:
    UPROPERTY(EditDefaultsOnly, BlueprintReadOnly, Category = "Material")
    FMaterialOpacityTransition SpawnEnterMaterialTransition;
 
private:
    UPROPERTY(Transient)
    TWeakObjectPtr<AEnemyCharacterBase> ActiveEnemyCharacter;
 
    UPROPERTY(Transient)
    TWeakObjectPtr<UWorld> ActiveWorld;
 
    UPROPERTY(Transient)
    TArray<int32> ActiveMaterialSlotIndices;
 
    UPROPERTY(Transient)
    TArray<TObjectPtr<UMaterialInterface>> OriginalMaterials;
 
    UPROPERTY(Transient)
    TArray<TObjectPtr<UMaterialInstanceDynamic>> DynamicMaterials;
 
    FTimerHandle MaterialTransitionTimerHandle;
    float MaterialTransitionStartTime = 0.0f;
    float ActiveTransitionDurationSeconds = 0.0f;
    float ActiveTransitionStartOpacity = 0.0f;
    float ActiveTransitionEndOpacity = 1.0f;
    FName ActiveOpacityParameterName = TEXT("Opacity");
};