MassObserverRegistry.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "MassEntityTypes.h"
#include "MassProcessor.h"
#include "UObject/ObjectKey.h"
#include "MassObserverRegistry.generated.h"
 
#define UE_API MASSENTITY_API
 
 
struct FMassObserverManager;
 
USTRUCT(meta = (Deprecated = "5.7", DepracationMessage = "FMassProcessorClassCollection is no longer being used and will be removed in the upcoming engine released"))
struct FMassProcessorClassCollection
{
    GENERATED_BODY()
 
    UPROPERTY()
    TArray<TSubclassOf<UMassProcessor>> ClassCollection;
};
 
USTRUCT(meta = (Deprecated = "5.7", DepracationMessage = "FMassEntityObserverClassesMap is no longer being used and will be removed in the upcoming engine released"))
struct FMassEntityObserverClassesMap
{
    GENERATED_BODY()
 
    
    const TMap<TObjectPtr<const UScriptStruct>, FMassProcessorClassCollection>& operator*() const
    {
        return Container;
    }
 
    TMap<TObjectPtr<const UScriptStruct>, FMassProcessorClassCollection>& operator*()
    {
        return Container;
    }
 
private:
    UPROPERTY()
    TMap<TObjectPtr<const UScriptStruct>, FMassProcessorClassCollection> Container;
};
 
UCLASS(MinimalAPI)
class UMassObserverRegistry : public UObject
{
    GENERATED_BODY()
 
public:
    UE_API UMassObserverRegistry();
 
    static UMassObserverRegistry& GetMutable() { return *GetMutableDefault<UMassObserverRegistry>(); }
    static const UMassObserverRegistry& Get() { return *GetDefault<UMassObserverRegistry>(); }
 
    UE_API void RegisterObserver(TNotNull<const UScriptStruct*> ObservedType, uint8 OperationFlags, TSubclassOf<UMassProcessor> ObserverClass);
 
    void RegisterObserver(TNotNull<const UScriptStruct*> ObservedType, EMassObservedOperationFlags OperationFlags, TSubclassOf<UMassProcessor> ObserverClass)
    {
        RegisterObserver(ObservedType, static_cast<uint8>(OperationFlags), ObserverClass);
    }
 
    UE_API void RegisterObserver(const UScriptStruct& ObservedType, EMassObservedOperation Operation, TSubclassOf<UMassProcessor> ObserverClass);
 
    using FObserverClassesMap = TMap<TObjectKey<const UScriptStruct>, TArray<FSoftClassPath>>;
protected:
 
    void OnModulePackagesUnloaded(TConstArrayView<UPackage*> Packages);
 
    FDelegateHandle ModulesUnloadedHandle;
 
    friend FMassObserverManager;
    FObserverClassesMap FragmentObserverMaps[static_cast<uint8>(EMassObservedOperation::MAX)];
    FObserverClassesMap TagObserverMaps[static_cast<uint8>(EMassObservedOperation::MAX)];
 
    UE_DEPRECATED(5.7, "Use FragmentObserverMaps instead")
    UPROPERTY()
    FMassEntityObserverClassesMap FragmentObservers[(uint8)EMassObservedOperation::MAX];
 
    UE_DEPRECATED(5.7, "Use TagObserverMaps instead")
    UPROPERTY()
    FMassEntityObserverClassesMap TagObservers[(uint8)EMassObservedOperation::MAX];
};
 
#undef UE_API