ArticyScriptFragment.h

//  
// Copyright (c) 2023 articy Software GmbH & Co. KG. All rights reserved.  
//
 
#pragma once
 
#include "ArticyPausableType.h"
#include "Interfaces/ArticyNode.h"
#include "Interfaces/ArticyConditionProvider.h"
#include "Interfaces/ArticyInstructionProvider.h"
#include "ArticyScriptFragment.generated.h"

UCLASS(BlueprintType, abstract)
class ARTICYRUNTIME_API UArticyScriptFragment : public UArticyPrimitive
{
    GENERATED_BODY()
public:
    const FString& GetExpression() const { return Expression; }
protected:

    UPROPERTY(VisibleAnywhere, BlueprintReadOnly, Category = "Articy")
    FString Expression = "";

    int GetExpressionHash() const;
 
    template<typename Type, typename PropType>
    friend struct ArticyObjectTypeInfo;

    void InitFromJson(TSharedPtr<FJsonValue> Json) override;
 
private:

    mutable int CachedExpressionHash;
};


UCLASS(BlueprintType)
class ARTICYRUNTIME_API UArticyScriptCondition : public UArticyScriptFragment, public IArticyConditionProvider
{
    GENERATED_BODY()
 
public:

    bool Evaluate(class UArticyGlobalVariables* GV = nullptr, class UObject* MethodProvider = nullptr) override;
};

UCLASS(BlueprintType)
class ARTICYRUNTIME_API UArticyCondition : public UArticyNode, public IArticyConditionProvider
{
    GENERATED_BODY()
 
public:
    UFUNCTION(BlueprintCallable, Category = "Condition")
    UArticyScriptCondition* GetCondition() const;

    EArticyPausableType GetType() override { return EArticyPausableType::Condition; }

    bool Evaluate(class UArticyGlobalVariables* GV = nullptr, class UObject* MethodProvider = nullptr) override;

    void Explore(UArticyFlowPlayer* Player, TArray<FArticyBranch>& OutBranches, const uint32& Depth) override;
 
private:

    UPROPERTY(transient)
    mutable UArticyScriptCondition* Condition = nullptr;
};


UCLASS(BlueprintType)
class ARTICYRUNTIME_API UArticyScriptInstruction : public UArticyScriptFragment, public IArticyInstructionProvider
{
    GENERATED_BODY()
 
public:

    void Execute(class UArticyGlobalVariables* GV = nullptr, class UObject* MethodProvider = nullptr) override;
};

UCLASS(BlueprintType)
class ARTICYRUNTIME_API UArticyInstruction : public UArticyNode, public IArticyInstructionProvider
{
    GENERATED_BODY()
 
public:
    UFUNCTION(BlueprintCallable, Category = "Instruction")
    UArticyScriptInstruction* GetInstruction() const;

    EArticyPausableType GetType() override { return EArticyPausableType::Instruction; }

    void Execute(class UArticyGlobalVariables* GV = nullptr, class UObject* MethodProvider = nullptr) override;

    void Explore(UArticyFlowPlayer* Player, TArray<FArticyBranch>& OutBranches, const uint32& Depth) override;
 
private:

    UPROPERTY(transient)
    mutable UArticyScriptInstruction* Instruction = nullptr;
};