EffectChainExecutor.h

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// Fill out your copyright notice in the Description page of Project Settings.
 
#pragma once
 
#include "CoreMinimal.h"
#include "Level/CK_ELevelType.h"
 
struct FLevelStreamingContext;
class ULevelStreamingEffect;
 
 
struct FEffectChainExecutor
{
    using FContextFactory = TFunction<FLevelStreamingContext()>;
 
    using FOnChainCompleted = TFunction<void(ELevelStreamingPhase)>;
 
    void SetupEffects(const TArray<ULevelStreamingEffect*>& AllEffects);
 
    void ClearEffects();
 
    void Start(ELevelStreamingPhase InPhase, FContextFactory InContextFactory, FOnChainCompleted InOnCompleted, bool bInDebugMode = false);
 
    void Tick(float DeltaTime);
 
    bool IsActive() const
    {
        return bActive;
    }
 
    ELevelStreamingPhase GetPhase() const
    {
        return Phase;
    }
 
    int32 GetChainIndex() const
    {
        return ChainIndex;
    }
 
private:
    void Process();
 
    ELevelStreamingEffectResult DispatchUpdate(ULevelStreamingEffect* Effect, const FLevelStreamingContext& Context) const;
 
    void DispatchEvent(ULevelStreamingEffect* Effect, ELevelStreamingEffectCallType CallType, const FLevelStreamingContext& Context) const;
 
private:
    TMap<ELevelStreamingPhase, TArray<ULevelStreamingEffect*>> PhaseChains;
 
    TArray<ULevelStreamingEffect*> Chain;
 
    int32 ChainIndex = 0;
 
    ELevelStreamingPhase Phase = ELevelStreamingPhase::None;
 
    FContextFactory ContextFactory;
 
    FOnChainCompleted OnCompleted;
 
    bool bActive = false;
 
    bool bDebugMode = false;
};