BTDecorator_Blackboard.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "UObject/ObjectMacros.h"
#include "InputCoreTypes.h"
#include "BehaviorTree/Decorators/BTDecorator_BlackboardBase.h"
#include "BehaviorTree/Blackboard/BlackboardKeyType.h"
#include "BTDecorator_Blackboard.generated.h"
 
class FBlackboardDecoratorDetails;
class UBehaviorTree;
class UBlackboardComponent;
struct FBlackboardEntry;
 
UENUM()
namespace EBTBlackboardRestart
{
    enum Type : int
    {
        ValueChange     UMETA(DisplayName="On Value Change", ToolTip="Restart on every change of observed blackboard value"),
        ResultChange    UMETA(DisplayName="On Result Change", ToolTip="Restart only when result of evaluated condition is changed"),
    };
}
 
UCLASS(HideCategories=(Condition), MinimalAPI)
class UBTDecorator_Blackboard : public UBTDecorator_BlackboardBase
{
    GENERATED_UCLASS_BODY()
 
    AIMODULE_API virtual bool CalculateRawConditionValue(UBehaviorTreeComponent& OwnerComp, uint8* NodeMemory) const override;
    AIMODULE_API virtual EBlackboardNotificationResult OnBlackboardKeyValueChange(const UBlackboardComponent& Blackboard, FBlackboard::FKey ChangedKeyID) override;
    AIMODULE_API virtual void DescribeRuntimeValues(const UBehaviorTreeComponent& OwnerComp, uint8* NodeMemory, EBTDescriptionVerbosity::Type Verbosity, TArray<FString>& Values) const override;
    AIMODULE_API virtual FString GetStaticDescription() const override;
 
protected:
 
    UPROPERTY(Category=Blackboard, EditAnywhere, meta=(DisplayName="Key Value"))
    int32 IntValue;
 
    UPROPERTY(Category=Blackboard, EditAnywhere, meta=(DisplayName="Key Value"))
    float FloatValue;
 
    UPROPERTY(Category=Blackboard, EditAnywhere, meta=(DisplayName="Key Value"))
    FString StringValue;
 
    UPROPERTY()
    FString CachedDescription;
 
    UPROPERTY()
    uint8 OperationType;
 
    UPROPERTY(Category=FlowControl, EditAnywhere)
    TEnumAsByte<EBTBlackboardRestart::Type> NotifyObserver;
 
#if WITH_EDITORONLY_DATA
 
    UPROPERTY(Category=Blackboard, EditAnywhere, meta=(DisplayName="Key Query"))
    TEnumAsByte<EBasicKeyOperation::Type> BasicOperation;
 
    UPROPERTY(Category=Blackboard, EditAnywhere, meta=(DisplayName="Key Query"))
    TEnumAsByte<EArithmeticKeyOperation::Type> ArithmeticOperation;
 
    UPROPERTY(Category=Blackboard, EditAnywhere, meta=(DisplayName="Key Query"))
    TEnumAsByte<ETextKeyOperation::Type> TextOperation;
 
#endif
 
#if WITH_EDITOR
public:
    AIMODULE_API virtual void BuildDescription();
protected:
    AIMODULE_API virtual void PostEditChangeProperty(FPropertyChangedEvent& PropertyChangedEvent) override;
#endif
 
    AIMODULE_API virtual void InitializeFromAsset(UBehaviorTree& Asset) override;
 
    AIMODULE_API void RefreshEnumBasedDecorator(const FBlackboardEntry& Entry);
 
    AIMODULE_API bool EvaluateOnBlackboard(const UBlackboardComponent& BlackboardComp) const;
 
    friend FBlackboardDecoratorDetails;
};