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4759599dff
Add a small bug fix to it. When attempting to create an auto-cast node from an Interface -> Object type, the UEdGraphSchema_K2::FindSpecializedConversionNode will NewObject whatever node type is required as a template to copy. This Template node does not have a parent graph (rightfully so) which means that the call to GetSchema would return null. When this happened with a Dynamic Cast node, it was checking on the schema being available in the SetPurity function where it was not before. We don't want to set the parent graph on the template node during conversion because that isn't accurate because its a dummy template node, not something that is actually on the graph. It would also be adding references to that parent graph unnecessarily. #rb Phillip.Kavan Original CL Desc ----------------------------------------------------------------- Fix potential crash when `bFavorPureCastNodes` is enabled. `K2Node_Message` attempted to create an impure cast node when expanded, but `SetPurity(false)` had no effect in this case because inside it `IsNodePure` returned `false` even if the default cast purity was `Pure`. It resulted in the creation of a pure node, causing a crash because the Message node attempted to work with its (non-existent) exec pins. #rb Phillip.Kavan #ushell-cherrypick of 25757919 by kristof.morva1 [CL 25792482 by ben hoffman in ue5-main branch]
128 lines
4.3 KiB
C++
128 lines
4.3 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "BlueprintActionFilter.h"
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#include "BlueprintNodeSignature.h"
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#include "Containers/Array.h"
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#include "CoreMinimal.h"
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#include "EdGraph/EdGraphNode.h"
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#include "EdGraph/EdGraphNodeUtils.h"
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#include "HAL/Platform.h"
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#include "Internationalization/Text.h"
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#include "K2Node.h"
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#include "KismetCompilerMisc.h"
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#include "Math/Color.h"
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#include "Templates/SubclassOf.h"
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#include "Textures/SlateIcon.h"
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#include "UObject/ObjectMacros.h"
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#include "UObject/UObjectGlobals.h"
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#include "K2Node_DynamicCast.generated.h"
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class FString;
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class UEdGraphPin;
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class UObject;
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UCLASS(MinimalAPI)
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class UK2Node_DynamicCast : public UK2Node
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{
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GENERATED_UCLASS_BODY()
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/** The type that the input should try to be cast to */
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UPROPERTY()
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TSubclassOf<class UObject> TargetType;
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//~ Begin UObject Interface
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virtual void Serialize(FArchive& Ar);
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//~ End UObject Interface
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//~ Begin UEdGraphNode Interface
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virtual void AllocateDefaultPins() override;
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virtual FLinearColor GetNodeTitleColor() const override;
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virtual FText GetNodeTitle(ENodeTitleType::Type TitleType) const override;
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virtual FText GetTooltipText() const override;
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virtual FSlateIcon GetIconAndTint(FLinearColor& OutColor) const override;
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virtual void GetNodeContextMenuActions(class UToolMenu* Menu, class UGraphNodeContextMenuContext* Context) const override;
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virtual bool IncludeParentNodeContextMenu() const override { return true; }
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virtual void PostReconstructNode() override;
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virtual bool HasExternalDependencies(TArray<class UStruct*>* OptionalOutput) const override;
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//~ End UEdGraphNode Interface
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//~ Begin UK2Node Interface
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virtual ERedirectType DoPinsMatchForReconstruction(const UEdGraphPin* NewPin, int32 NewPinIndex, const UEdGraphPin* OldPin, int32 OldPinIndex) const override;
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virtual class FNodeHandlingFunctor* CreateNodeHandler(class FKismetCompilerContext& CompilerContext) const override;
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virtual FText GetMenuCategory() const override;
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virtual FBlueprintNodeSignature GetSignature() const override;
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virtual bool IsNodePure() const override { return PureState == EPureState::Pure; }
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virtual bool IsConnectionDisallowed(const UEdGraphPin* MyPin, const UEdGraphPin* OtherPin, FString& OutReason) const override;
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virtual void NotifyPinConnectionListChanged(UEdGraphPin* Pin) override;
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virtual void ReallocatePinsDuringReconstruction(TArray<UEdGraphPin*>& OldPins) override;
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virtual void ValidateNodeDuringCompilation(class FCompilerResultsLog& MessageLog) const override;
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virtual bool IsActionFilteredOut(const class FBlueprintActionFilter& Filter) override;
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//~ End UK2Node Interface
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/** Get the 'valid cast' exec pin */
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BLUEPRINTGRAPH_API UEdGraphPin* GetValidCastPin() const;
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/** Get the 'invalid cast' exec pin */
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BLUEPRINTGRAPH_API UEdGraphPin* GetInvalidCastPin() const;
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/** Get the cast result pin */
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BLUEPRINTGRAPH_API UEdGraphPin* GetCastResultPin() const;
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/** Get the input object to be casted pin */
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BLUEPRINTGRAPH_API virtual UEdGraphPin* GetCastSourcePin() const;
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/** Get the boolean output pin that signifies a successful/failed cast. */
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BLUEPRINTGRAPH_API virtual UEdGraphPin* GetBoolSuccessPin() const;
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/**
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* Will change the node's purity, and reallocate pins accordingly (adding/
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* removing exec pins).
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*
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* @param bNewPurity Whether to configure node as pure.
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*/
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BLUEPRINTGRAPH_API void SetPurity(bool bNewPurity);
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protected:
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/** Determine purity and create exec pins if needed */
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void CreateExecPins();
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/** Create success output signal pin (visible only if pure) */
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void CreateSuccessPin();
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/** Flips the node's purity (adding/removing exec pins as needed). */
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void TogglePurity();
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/** Update exec pins when converting from impure to pure. */
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bool ReconnectPureExecPins(TArray<UEdGraphPin*>& OldPins);
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/** Sets the pure state to Pure or Impure if it's using the default one */
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void InitPureState();
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/** Constructing FText strings can be costly, so we cache the node's title */
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FNodeTextCache CachedNodeTitle;
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/** [DEPRECATED] This member is no longer in use. */
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UE_DEPRECATED(5.3, "Use IsNodePure() instead.")
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bool bIsPureCast;
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private:
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enum class EPureState : uint8
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{
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Pure,
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Impure,
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UseDefault
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};
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/** Internal state used to determine purity */
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EPureState PureState;
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/** [DEPRECATED] Receives the old value on load if previously saved */
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UPROPERTY()
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bool bIsPureCast_DEPRECATED;
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};
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