DataflowCoreNodes.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "ChaosLog.h"
#include "CoreMinimal.h"
#include "Dataflow/DataflowConnection.h"
#include "Dataflow/DataflowNodeParameters.h"
#include "Dataflow/DataflowNode.h"
 
#include "DataflowCoreNodes.generated.h"
 
struct FDataflowOutput;
 
USTRUCT()
struct FDataflowReRouteNode : public FDataflowNode
{
    GENERATED_USTRUCT_BODY()
 
    DATAFLOW_NODE_DEFINE_INTERNAL(FDataflowReRouteNode, "ReRouteNode", "Core", "")
 
public:
    FDataflowReRouteNode(const UE::Dataflow::FNodeParameters& Param, FGuid InGuid = FGuid::NewGuid());
    virtual void Evaluate(UE::Dataflow::FContext& Context, const FDataflowOutput* Out) const;
 
 
public:
    UPROPERTY(meta = (DataflowInput, DataflowOutput, DataflowPassthrough = "Value", DisplayName = "Value"))
    FDataflowAnyType Value;
};
 
USTRUCT(meta=(Icon="GraphEditor.Branch_16x"))
struct FDataflowBranchNode : public FDataflowNode
{
    GENERATED_USTRUCT_BODY()
 
    DATAFLOW_NODE_DEFINE_INTERNAL(FDataflowBranchNode, "Branch", "FlowControl", "")
 
public:
    FDataflowBranchNode(const UE::Dataflow::FNodeParameters& Param, FGuid InGuid = FGuid::NewGuid());
    virtual void Evaluate(UE::Dataflow::FContext& Context, const FDataflowOutput* Out) const;
 
public:
    UPROPERTY(meta = (DataflowInput, DataflowIntrinsic, DisplayName = "TrueValue"))
    FDataflowAnyType TrueValue;
 
    UPROPERTY(meta = (DataflowInput, DataflowIntrinsic, DisplayName = "FalseValue"))
    FDataflowAnyType FalseValue;
 
    UPROPERTY(EditAnywhere, Category="Condition", meta = (DataflowInput, DisplayName = "Condition"))
    bool bCondition = true;
 
    UPROPERTY(meta = (DataflowOutput, DisplayName = "Result"))
    FDataflowAnyType Result;
};
 
 
USTRUCT(meta = (Icon = "GraphEditor.Branch_16x"))
struct FDataflowSelectNode : public FDataflowNode
{
    GENERATED_USTRUCT_BODY()
 
    DATAFLOW_NODE_DEFINE_INTERNAL(FDataflowSelectNode, "Select", "FlowControl", "")
 
public:
    FDataflowSelectNode(const UE::Dataflow::FNodeParameters& Param, FGuid InGuid = FGuid::NewGuid());
    virtual void Evaluate(UE::Dataflow::FContext& Context, const FDataflowOutput* Out) const;
 
public:
    UPROPERTY()
    TArray<FDataflowAnyType> Inputs;
 
    UPROPERTY(EditAnywhere, Category = "Condition", meta = (DataflowInput))
    int32 SelectedIndex = 0;
 
    UPROPERTY(meta = (DataflowOutput, DataflowPassthrough = "Inputs[0]"))
    FDataflowAnyType Result;
 
private:
    virtual TArray<UE::Dataflow::FPin> AddPins() override;
    virtual bool CanAddPin() const override { return true; }
    virtual bool CanRemovePin() const override { return Inputs.Num() > NumInitialInputs; }
    virtual TArray<UE::Dataflow::FPin> GetPinsToRemove() const override;
    virtual void OnPinRemoved(const UE::Dataflow::FPin& Pin) override;
    virtual void PostSerialize(const FArchive& Ar) override;
 
    UE::Dataflow::TConnectionReference<FDataflowAnyType> GetConnectionReference(int32 Index) const;
 
    static constexpr int32 NumRequiredDataflowInputs = 1;
    static constexpr int32 NumInitialInputs = 2;
    static const FName MainTypeGroup;
};
 
USTRUCT()
struct FDataflowPrintNode : public FDataflowNode
{
    GENERATED_USTRUCT_BODY()
 
    DATAFLOW_NODE_DEFINE_INTERNAL(FDataflowPrintNode, "Print", "Core", "")
 
public:
    FDataflowPrintNode(const UE::Dataflow::FNodeParameters& Param, FGuid InGuid = FGuid::NewGuid());
    virtual void Evaluate(UE::Dataflow::FContext& Context, const FDataflowOutput* Out) const;
 
public:
    UPROPERTY(meta = (DataflowInput, DisplayName = "Value"))
    FDataflowStringConvertibleTypes Value;
};
 
USTRUCT()
struct FDataflowForceDependencyNode : public FDataflowNode
{
    GENERATED_USTRUCT_BODY()
 
    DATAFLOW_NODE_DEFINE_INTERNAL(FDataflowForceDependencyNode, "ForceDependency", "FlowControl", "")
 
public:
    FDataflowForceDependencyNode(const UE::Dataflow::FNodeParameters& Param, FGuid InGuid = FGuid::NewGuid());
    virtual void Evaluate(UE::Dataflow::FContext& Context, const FDataflowOutput* Out) const;
 
 
public:
 
    /* Evaluating Value will force an evaluation of DependentValue*/
    UPROPERTY(meta = (DataflowInput, DataflowOutput, DataflowPassthrough = "Value"))
    FDataflowAnyType Value;
 
    /* Evaluating Value will force an evaluation of DependentValue*/
    UPROPERTY(meta = (DataflowInput))
    FDataflowAnyType DependentValue;
};
 
namespace UE::Dataflow
{
    void RegisterCoreNodes();
}