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115 lines
3.7 KiB
C++
115 lines
3.7 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "K2Node_ClassDynamicCast.h"
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#include "GraphEditorSettings.h"
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#include "EdGraphSchema_K2.h"
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#include "DynamicCastHandler.h"
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#include "Engine/Blueprint.h"
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#include "UObject/Interface.h"
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#define LOCTEXT_NAMESPACE "K2Node_ClassDynamicCast"
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struct FClassDynamicCastHelper
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{
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static const FName CastSuccessPinName;
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static const FName ClassToCastName;;
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};
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const FName FClassDynamicCastHelper::CastSuccessPinName(TEXT("bSuccess"));
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const FName FClassDynamicCastHelper::ClassToCastName(TEXT("Class"));
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UK2Node_ClassDynamicCast::UK2Node_ClassDynamicCast(const FObjectInitializer& ObjectInitializer)
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: Super(ObjectInitializer)
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{
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}
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void UK2Node_ClassDynamicCast::AllocateDefaultPins()
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{
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// Check to track down possible BP comms corruption
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//@TODO: Move this somewhere more sensible
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ensure((TargetType == nullptr) || (!TargetType->HasAnyClassFlags(CLASS_NewerVersionExists)));
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const UEdGraphSchema_K2* K2Schema = Cast<UEdGraphSchema_K2>(GetSchema());
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check(K2Schema != nullptr);
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if (!K2Schema->DoesGraphSupportImpureFunctions(GetGraph()))
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{
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bIsPureCast = true;
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}
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if (!bIsPureCast)
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{
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// Input - Execution Pin
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CreatePin(EGPD_Input, UEdGraphSchema_K2::PC_Exec, UEdGraphSchema_K2::PN_Execute);
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// Output - Execution Pins
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CreatePin(EGPD_Output, UEdGraphSchema_K2::PC_Exec, UEdGraphSchema_K2::PN_CastSucceeded);
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CreatePin(EGPD_Output, UEdGraphSchema_K2::PC_Exec, UEdGraphSchema_K2::PN_CastFailed);
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}
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// Input - Source type Pin
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CreatePin(EGPD_Input, UEdGraphSchema_K2::PC_Class, UObject::StaticClass(), FClassDynamicCastHelper::ClassToCastName);
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// Output - Data Pin
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if (TargetType)
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{
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const FString CastResultPinName = UEdGraphSchema_K2::PN_CastedValuePrefix + TargetType->GetDisplayNameText().ToString();
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CreatePin(EGPD_Output, UEdGraphSchema_K2::PC_Class, *TargetType, *CastResultPinName);
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}
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UEdGraphPin* BoolSuccessPin = CreatePin(EGPD_Output, UEdGraphSchema_K2::PC_Boolean, FClassDynamicCastHelper::CastSuccessPinName);
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BoolSuccessPin->bHidden = !bIsPureCast;
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UK2Node::AllocateDefaultPins();
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}
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FLinearColor UK2Node_ClassDynamicCast::GetNodeTitleColor() const
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{
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return GetDefault<UGraphEditorSettings>()->ClassPinTypeColor;
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}
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FText UK2Node_ClassDynamicCast::GetNodeTitle(ENodeTitleType::Type TitleType) const
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{
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if (CachedNodeTitle.IsOutOfDate(this))
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{
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CachedNodeTitle.SetCachedText(FText::Format(LOCTEXT("NodeTitle", "{0} Class"), Super::GetNodeTitle(TitleType)), this);
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}
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return CachedNodeTitle;
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}
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FText UK2Node_ClassDynamicCast::GetTooltipText() const
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{
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if (TargetType && TargetType->IsChildOf(UInterface::StaticClass()))
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{
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return LOCTEXT("CastToInterfaceTooltip", "Tries to access class as an interface it may implement.");
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}
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UBlueprint* CastToBP = UBlueprint::GetBlueprintFromClass(TargetType);
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if (CastToBP)
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{
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return LOCTEXT("CastToBPTooltip", "Tries to access class as a blueprint class it may inherit from.\n\nNOTE: This will cause the blueprint to always be loaded, which can be expensive.");
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}
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return LOCTEXT("CastToNativeTooltip", "Tries to access class as one it may inherit from.");
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}
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UEdGraphPin* UK2Node_ClassDynamicCast::GetCastSourcePin() const
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{
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UEdGraphPin* Pin = FindPinChecked(FClassDynamicCastHelper::ClassToCastName);
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check(Pin->Direction == EGPD_Input);
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return Pin;
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}
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UEdGraphPin* UK2Node_ClassDynamicCast::GetBoolSuccessPin() const
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{
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UEdGraphPin* Pin = FindPin(FClassDynamicCastHelper::CastSuccessPinName);
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check((Pin == nullptr) || (Pin->Direction == EGPD_Output));
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return Pin;
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}
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FNodeHandlingFunctor* UK2Node_ClassDynamicCast::CreateNodeHandler(FKismetCompilerContext& CompilerContext) const
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{
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return new FKCHandler_DynamicCast(CompilerContext, KCST_MetaCast);
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}
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#undef LOCTEXT_NAMESPACE
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