141 lines
3.9 KiB
C++
141 lines
3.9 KiB
C++
#pragma once
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#include "CoreMinimal.h"
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#include "WingHandler.h"
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#include "WingServer.h"
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#include "WingFetcher.h"
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#include "WingProperty.h"
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#include "WingJson.h"
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#include "WingUtils.h"
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#include "EdGraph/EdGraphPin.h"
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#include "EdGraphSchema_K2.h"
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#include "MaterialGraph/MaterialGraphSchema.h"
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#include "GraphNode_SetDefaults.generated.h"
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// ---------------------------------------------------------------------------
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// ---------------------------------------------------------------------------
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// ---------------------------------------------------------------------------
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USTRUCT()
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struct FSetNodeDefaultEntry
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{
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GENERATED_BODY()
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UPROPERTY()
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FString Node;
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UPROPERTY()
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FString Name;
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UPROPERTY()
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FString Value;
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};
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UCLASS()
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class UWing_GraphNode_SetDefaults : public UObject, public IWingHandler
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{
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GENERATED_BODY()
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public:
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UPROPERTY(meta=(Description="Target graph"))
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FString Graph;
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UPROPERTY(meta=(Description="Array of {node, name, value} objects"))
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FWingJsonArray Pins;
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virtual FString GetDescription() const override
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{
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return TEXT("Set the default value of input pins or material expression properties on nodes.");
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}
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// -----------------------------------------------------------------------
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// K2 graphs: set pin default values.
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// -----------------------------------------------------------------------
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void HandleK2Entry(const FSetNodeDefaultEntry& Entry, UEdGraph* GraphObj, const UEdGraphSchema_K2* K2Schema)
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{
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WingFetcher F(GraphObj);
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UEdGraphPin* Pin = F.Node(Entry.Node).Pin(Entry.Name).Cast<UEdGraphPin>();
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if (!Pin) return;
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UEdGraphNode* Node = Pin->GetOwningNode();
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if (Pin->Direction != EGPD_Input)
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{
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UWingServer::Printf(TEXT("error: %s is an output pin\n"), *WingUtils::FormatName(Pin));
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return;
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}
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Pin->Modify();
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FString UseDefaultValue;
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TObjectPtr<UObject> UseDefaultObject = nullptr;
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FText UseDefaultText;
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K2Schema->GetPinDefaultValuesFromString(Pin->PinType, Node, Entry.Value, UseDefaultValue, UseDefaultObject, UseDefaultText, false);
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FString Error = K2Schema->IsPinDefaultValid(Pin, UseDefaultValue, UseDefaultObject, UseDefaultText);
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if (!Error.IsEmpty())
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{
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UWingServer::Printf(TEXT("error: %s: %s\n"), *WingUtils::FormatName(Pin), *Error);
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return;
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}
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UWingServer::AddTouchedObject(Node);
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K2Schema->TrySetDefaultValue(*Pin, Entry.Value);
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}
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// -----------------------------------------------------------------------
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// Material graphs: set material expression properties.
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// -----------------------------------------------------------------------
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void HandleMaterialEntry(const FSetNodeDefaultEntry& Entry, UEdGraph* GraphObj)
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{
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WingFetcher F(GraphObj);
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UEdGraphNode* Node = F.Node(Entry.Node).Cast<UEdGraphNode>();
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if (!Node) return;
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TArray<FWingProperty> All = FWingProperty::GetAll(Node, CPF_Edit);
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FWingProperty P = FWingProperty::FindOneExactMatch(All, Entry.Name);
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if (!P) return;
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UWingServer::AddTouchedObject(Node);
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if (!P.SetText(Entry.Value))
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return;
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}
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// -----------------------------------------------------------------------
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virtual void Handle() override
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{
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// Fetch the graph once.
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WingFetcher GraphFetcher;
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UEdGraph* GraphObj = GraphFetcher.Walk(Graph).Cast<UEdGraph>();
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if (!GraphObj) return;
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const UEdGraphSchema* Schema = GraphObj->GetSchema();
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const UEdGraphSchema_K2* K2Schema = Cast<UEdGraphSchema_K2>(Schema);
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const UMaterialGraphSchema* MGSchema = Cast<UMaterialGraphSchema>(Schema);
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if (!K2Schema && !MGSchema)
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{
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UWingServer::Printf(TEXT("error: unsupported graph schema %s\n"), *Schema->GetClass()->GetName());
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return;
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}
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for (const TSharedPtr<FJsonValue>& PinVal : Pins.Array)
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{
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FSetNodeDefaultEntry Entry;
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if (!WingJson::PopulateFromJson(FSetNodeDefaultEntry::StaticStruct(), &Entry, PinVal))
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continue;
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if (K2Schema)
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HandleK2Entry(Entry, GraphObj, K2Schema);
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else if (MGSchema)
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HandleMaterialEntry(Entry, GraphObj);
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}
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UWingServer::Printf(TEXT("Done.\n"));
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}
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};
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