86 lines
2.9 KiB
C++
86 lines
2.9 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "K2Node_AsyncAction.h"
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#include "BlueprintActionDatabaseRegistrar.h"
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#include "BlueprintFunctionNodeSpawner.h"
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#include "BlueprintNodeSpawner.h"
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#include "Delegates/Delegate.h"
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#include "EdGraph/EdGraphNode.h"
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#include "HAL/Platform.h"
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#include "Kismet/BlueprintAsyncActionBase.h"
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#include "Misc/AssertionMacros.h"
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#include "Templates/Casts.h"
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#include "Templates/SubclassOf.h"
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#include "UObject/Class.h"
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#include "UObject/Field.h"
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#include "UObject/NameTypes.h"
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#include "UObject/ObjectPtr.h"
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#include "UObject/UnrealType.h"
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#include "UObject/WeakObjectPtrTemplates.h"
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#define LOCTEXT_NAMESPACE "K2Node"
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UK2Node_AsyncAction::UK2Node_AsyncAction(const FObjectInitializer& ObjectInitializer)
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: Super(ObjectInitializer)
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{
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ProxyActivateFunctionName = GET_FUNCTION_NAME_CHECKED(UBlueprintAsyncActionBase, Activate);
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}
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void UK2Node_AsyncAction::GetMenuActions(FBlueprintActionDatabaseRegistrar& ActionRegistrar) const
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{
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struct GetMenuActions_Utils
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{
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static void SetNodeFunc(UEdGraphNode* NewNode, bool /*bIsTemplateNode*/, TWeakObjectPtr<UFunction> FunctionPtr)
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{
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UK2Node_AsyncAction* AsyncTaskNode = CastChecked<UK2Node_AsyncAction>(NewNode);
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if (FunctionPtr.IsValid())
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{
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UFunction* Func = FunctionPtr.Get();
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FObjectProperty* ReturnProp = CastFieldChecked<FObjectProperty>(Func->GetReturnProperty());
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AsyncTaskNode->ProxyFactoryFunctionName = Func->GetFName();
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AsyncTaskNode->ProxyFactoryClass = Func->GetOuterUClass();
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AsyncTaskNode->ProxyClass = ReturnProp->PropertyClass;
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}
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}
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};
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UClass* NodeClass = GetClass();
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ActionRegistrar.RegisterClassFactoryActions<UBlueprintAsyncActionBase>(FBlueprintActionDatabaseRegistrar::FMakeFuncSpawnerDelegate::CreateLambda([NodeClass](const UFunction* FactoryFunc)->UBlueprintNodeSpawner*
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{
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UClass* FactoryClass = FactoryFunc ? FactoryFunc->GetOwnerClass() : nullptr;
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if (FactoryClass && FactoryClass->HasMetaData(TEXT("HasDedicatedAsyncNode")))
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{
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// Wants to use a more specific blueprint node to handle the async action
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return nullptr;
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}
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UBlueprintNodeSpawner* NodeSpawner = UBlueprintFunctionNodeSpawner::Create(FactoryFunc);
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check(NodeSpawner != nullptr);
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NodeSpawner->NodeClass = NodeClass;
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TWeakObjectPtr<UFunction> FunctionPtr = MakeWeakObjectPtr(const_cast<UFunction*>(FactoryFunc));
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NodeSpawner->CustomizeNodeDelegate = UBlueprintNodeSpawner::FCustomizeNodeDelegate::CreateStatic(GetMenuActions_Utils::SetNodeFunc, FunctionPtr);
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return NodeSpawner;
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}) );
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}
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void UK2Node_AsyncAction::InitializeProxyFromFunction(const UFunction* ProxyFunction)
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{
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if (ensure(ProxyFunction))
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{
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const FObjectProperty* ReturnProp = CastField<FObjectProperty>(ProxyFunction->GetReturnProperty());
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if (ensure(ReturnProp))
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{
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ProxyFactoryFunctionName = ProxyFunction->GetFName();
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ProxyFactoryClass = ProxyFunction->GetOuterUClass();
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ProxyClass = ReturnProp->PropertyClass;
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}
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}
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}
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#undef LOCTEXT_NAMESPACE
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