void UK2Node_EnumEquality::ExpandNode(class FKismetCompilerContext& CompilerContext, UEdGraph* SourceGraph)
{
Super::ExpandNode(CompilerContext, SourceGraph);
const UEdGraphSchema_K2* Schema = CompilerContext.GetSchema();
// Get the enum equality node and the KismetMathLibrary function info for use when we build those nodes
FName ConditionalFunctionName = "";
UClass* ConditionalFunctionClass = NULL;
GetConditionalFunction(ConditionalFunctionName, &ConditionalFunctionClass);
// Create the conditional node we're replacing the enum node for
UK2Node_CallFunction* ConditionalNode = SourceGraph->CreateBlankNode<UK2Node_CallFunction>();
ConditionalNode->FunctionReference.SetExternalMember(ConditionalFunctionName, ConditionalFunctionClass);
ConditionalNode->AllocateDefaultPins();
CompilerContext.MessageLog.NotifyIntermediateObjectCreation(ConditionalNode, this);
// Rewire the enum pins to the new conditional node
UEdGraphPin* LeftSideConditionalPin = ConditionalNode->FindPinChecked(TEXT("A"));
UEdGraphPin* RightSideConditionalPin = ConditionalNode->FindPinChecked(TEXT("B"));
UEdGraphPin* ReturnConditionalPin = ConditionalNode->FindPinChecked(Schema->PN_ReturnValue);
UEdGraphPin* Input1Pin = GetInput1Pin();
UEdGraphPin* Input2Pin = GetInput2Pin();
LeftSideConditionalPin->PinType = Input1Pin->PinType;
RightSideConditionalPin->PinType = Input2Pin->PinType;
CompilerContext.MovePinLinksToIntermediate(*Input1Pin, *LeftSideConditionalPin);
CompilerContext.MovePinLinksToIntermediate(*Input2Pin, *RightSideConditionalPin);
CompilerContext.MovePinLinksToIntermediate(*GetReturnValuePin(), *ReturnConditionalPin);
// Break all links to the Select node so it goes away for at scheduling time
BreakAllNodeLinks();
}
void FKCHandler_VariableSet::Transform(FKismetFunctionContext& Context, UEdGraphNode* Node)
{
// Expands node out to include a (local) call to the RepNotify function if necessary
UK2Node_VariableSet* SetNotify = Cast<UK2Node_VariableSet>(Node);
if ((SetNotify != NULL))
{
if (SetNotify->ShouldFlushDormancyOnSet())
{
// Create CallFuncNode
UK2Node_CallFunction* CallFuncNode = Node->GetGraph()->CreateBlankNode<UK2Node_CallFunction>();
CallFuncNode->FunctionReference.SetExternalMember(NAME_FlushNetDormancy, AActor::StaticClass() );
CallFuncNode->AllocateDefaultPins();
// Copy self pin
UEdGraphPin* NewSelfPin = CallFuncNode->FindPinChecked(CompilerContext.GetSchema()->PN_Self);
UEdGraphPin* OldSelfPin = Node->FindPinChecked(CompilerContext.GetSchema()->PN_Self);
NewSelfPin->CopyPersistentDataFromOldPin(*OldSelfPin);
// link new CallFuncNode -> Set Node
UEdGraphPin* OldExecPin = Node->FindPin(CompilerContext.GetSchema()->PN_Execute);
check(OldExecPin);
UEdGraphPin* NewExecPin = CallFuncNode->GetExecPin();
if (ensure(NewExecPin))
{
NewExecPin->CopyPersistentDataFromOldPin(*OldExecPin);
OldExecPin->BreakAllPinLinks();
CallFuncNode->GetThenPin()->MakeLinkTo(OldExecPin);
}
}
if (SetNotify->HasLocalRepNotify())
{
UK2Node_CallFunction* CallFuncNode = Node->GetGraph()->CreateBlankNode<UK2Node_CallFunction>();
CallFuncNode->FunctionReference.SetExternalMember(SetNotify->GetRepNotifyName(), SetNotify->GetVariableSourceClass() );
CallFuncNode->AllocateDefaultPins();
// Copy self pin
UEdGraphPin* NewSelfPin = CallFuncNode->FindPinChecked(CompilerContext.GetSchema()->PN_Self);
UEdGraphPin* OldSelfPin = Node->FindPinChecked(CompilerContext.GetSchema()->PN_Self);
NewSelfPin->CopyPersistentDataFromOldPin(*OldSelfPin);
// link Set Node -> new CallFuncNode
UEdGraphPin* OldThenPin = Node->FindPin(CompilerContext.GetSchema()->PN_Then);
check(OldThenPin);
UEdGraphPin* NewThenPin = CallFuncNode->GetThenPin();
if (ensure(NewThenPin))
{
// Link Set Node -> Notify
NewThenPin->CopyPersistentDataFromOldPin(*OldThenPin);
OldThenPin->BreakAllPinLinks();
OldThenPin->MakeLinkTo(CallFuncNode->GetExecPin());
}
}
}
}
void FPersonaModule::OnNewBlueprintCreated(UBlueprint* InBlueprint)
{
if (ensure(InBlueprint->UbergraphPages.Num() > 0))
{
UEdGraph* EventGraph = InBlueprint->UbergraphPages[0];
int32 SafeXPosition = 0;
int32 SafeYPosition = 0;
if (EventGraph->Nodes.Num() != 0)
{
SafeXPosition = EventGraph->Nodes[0]->NodePosX;
SafeYPosition = EventGraph->Nodes[EventGraph->Nodes.Num() - 1]->NodePosY + EventGraph->Nodes[EventGraph->Nodes.Num() - 1]->NodeHeight + 100;
}
// add try get owner node
UK2Node_CallFunction* GetOwnerNode = NewObject<UK2Node_CallFunction>(EventGraph);
UFunction* MakeNodeFunction = UAnimInstance::StaticClass()->FindFunctionByName(GET_FUNCTION_NAME_CHECKED(UAnimInstance, TryGetPawnOwner));
GetOwnerNode->CreateNewGuid();
GetOwnerNode->PostPlacedNewNode();
GetOwnerNode->SetFromFunction(MakeNodeFunction);
GetOwnerNode->SetFlags(RF_Transactional);
GetOwnerNode->AllocateDefaultPins();
GetOwnerNode->NodePosX = SafeXPosition;
GetOwnerNode->NodePosY = SafeYPosition;
UEdGraphSchema_K2::SetNodeMetaData(GetOwnerNode, FNodeMetadata::DefaultGraphNode);
GetOwnerNode->DisableNode();
EventGraph->AddNode(GetOwnerNode);
}
}
void FScriptBlueprintCompiler::CreateScriptDefinedFunction(FScriptField& Field)
{
check(ContextProperty);
UScriptBlueprint* Blueprint = ScriptBlueprint();
const FString FunctionName = Field.Name.ToString();
// Create Blueprint Graph which consists of 3 nodes: 'Entry', 'Get Script Context' and 'Call Function'
// @todo: once we figure out how to get parameter lists for functions we can add suport for that here
UEdGraph* ScriptFunctionGraph = NewObject<UEdGraph>(Blueprint, *FString::Printf(TEXT("%s_Graph"), *FunctionName));
ScriptFunctionGraph->Schema = UEdGraphSchema_K2::StaticClass();
ScriptFunctionGraph->SetFlags(RF_Transient);
FKismetFunctionContext* FunctionContext = CreateFunctionContext();
FunctionContext->SourceGraph = ScriptFunctionGraph;
FunctionContext->bCreateDebugData = false;
UK2Node_FunctionEntry* EntryNode = SpawnIntermediateNode<UK2Node_FunctionEntry>(NULL, ScriptFunctionGraph);
EntryNode->CustomGeneratedFunctionName = Field.Name;
EntryNode->AllocateDefaultPins();
UK2Node_VariableGet* GetVariableNode = SpawnIntermediateNode<UK2Node_VariableGet>(NULL, ScriptFunctionGraph);
GetVariableNode->VariableReference.SetSelfMember(ContextProperty->GetFName());
GetVariableNode->AllocateDefaultPins();
UK2Node_CallFunction* CallFunctionNode = SpawnIntermediateNode<UK2Node_CallFunction>(NULL, ScriptFunctionGraph);
CallFunctionNode->FunctionReference.SetExternalMember(TEXT("CallScriptFunction"), ContextProperty->PropertyClass);
CallFunctionNode->AllocateDefaultPins();
UEdGraphPin* FunctionNamePin = CallFunctionNode->FindPinChecked(TEXT("FunctionName"));
FunctionNamePin->DefaultValue = FunctionName;
// Link nodes together
UEdGraphPin* ExecPin = Schema->FindExecutionPin(*EntryNode, EGPD_Output);
UEdGraphPin* GetVariableOutPin = GetVariableNode->FindPinChecked(ContextProperty->GetName());
UEdGraphPin* CallFunctionPin = Schema->FindExecutionPin(*CallFunctionNode, EGPD_Input);
UEdGraphPin* FunctionTargetPin = CallFunctionNode->FindPinChecked(TEXT("self"));
ExecPin->MakeLinkTo(CallFunctionPin);
GetVariableOutPin->MakeLinkTo(FunctionTargetPin);
}
void UK2Node_GetNumEnumEntries::ExpandNode(class FKismetCompilerContext& CompilerContext, UEdGraph* SourceGraph)
{
Super::ExpandNode(CompilerContext, SourceGraph);
if(NULL == Enum)
{
CompilerContext.MessageLog.Error(*FString::Printf(*NSLOCTEXT("K2Node", "GetNumEnumEntries_Error", "@@ must have a valid enum defined").ToString()), this);
return;
}
// Force the enum to load its values if it hasn't already
if (Enum->HasAnyFlags(RF_NeedLoad))
{
Enum->GetLinker()->Preload(Enum);
}
const UEdGraphSchema_K2* Schema = CompilerContext.GetSchema();
check(NULL != Schema);
//MAKE LITERAL
const FName FunctionName = GET_FUNCTION_NAME_CHECKED(UKismetSystemLibrary, MakeLiteralInt);
UK2Node_CallFunction* MakeLiteralInt = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(this, SourceGraph);
MakeLiteralInt->SetFromFunction(UKismetSystemLibrary::StaticClass()->FindFunctionByName(FunctionName));
MakeLiteralInt->AllocateDefaultPins();
//OPUTPUT PIN
UEdGraphPin* OrgReturnPin = FindPinChecked(Schema->PN_ReturnValue);
UEdGraphPin* NewReturnPin = MakeLiteralInt->GetReturnValuePin();
check(NULL != NewReturnPin);
CompilerContext.MovePinLinksToIntermediate(*OrgReturnPin, *NewReturnPin);
//INPUT PIN
UEdGraphPin* InputPin = MakeLiteralInt->FindPinChecked(TEXT("Value"));
check(EGPD_Input == InputPin->Direction);
const FString DefaultValue = FString::FromInt(Enum->NumEnums() - 1);
InputPin->DefaultValue = DefaultValue;
BreakAllNodeLinks();
}
void UGameplayTagsK2Node_MultiCompareGameplayTagContainerSingleTags::ExpandNode(class FKismetCompilerContext& CompilerContext, UEdGraph* SourceGraph)
{
Super::ExpandNode(CompilerContext, SourceGraph);
const UEdGraphSchema_K2* K2Schema = GetDefault<UEdGraphSchema_K2>();
// Get The input and output pins to our node
UEdGraphPin* InPinSwitch = FindPin(TEXT("Gameplay Tag Container"));
UEdGraphPin* InPinContainerMatchType = FindPin(TEXT("Tag Container Match Type"));
UEdGraphPin* InPinTagsMatchType = FindPin(TEXT("Tags Match Type"));
// For Each Pin Compare against the Tag container
for (int32 Index = 0; Index < NumberOfPins; ++Index)
{
FString InPinName = TEXT("TagCase_") + FString::FormatAsNumber(Index);
FString OutPinName = TEXT("Case_") + FString::FormatAsNumber(Index) + TEXT(" True");
UEdGraphPin* InPinCase = FindPin(InPinName);
UEdGraphPin* OutPinCase = FindPin(OutPinName);
// Create call function node for the Compare function HasAllMatchingGameplayTags
UK2Node_CallFunction* PinCallFunction = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(this, SourceGraph);
const UFunction* Function = UBlueprintGameplayTagLibrary::StaticClass()->FindFunctionByName(GET_FUNCTION_NAME_CHECKED(UBlueprintGameplayTagLibrary, DoesContainerHaveTag));
PinCallFunction->SetFromFunction(Function);
PinCallFunction->AllocateDefaultPins();
UEdGraphPin *TagContainerPin = PinCallFunction->FindPinChecked(FString(TEXT("TagContainer")));
CompilerContext.CopyPinLinksToIntermediate(*InPinSwitch, *TagContainerPin);
UEdGraphPin *TagPin = PinCallFunction->FindPinChecked(FString(TEXT("Tag")));
CompilerContext.MovePinLinksToIntermediate(*InPinCase, *TagPin);
UEdGraphPin *ContainerTagsMatchTypePin = PinCallFunction->FindPinChecked(FString(TEXT("ContainerTagsMatchType")));
CompilerContext.CopyPinLinksToIntermediate(*InPinContainerMatchType, *ContainerTagsMatchTypePin);
UEdGraphPin *TagMatchTypePin = PinCallFunction->FindPinChecked(FString(TEXT("TagMatchType")));
CompilerContext.CopyPinLinksToIntermediate(*InPinTagsMatchType, *TagMatchTypePin);
UEdGraphPin *OutPin = PinCallFunction->FindPinChecked(K2Schema->PN_ReturnValue);
if (OutPinCase && OutPin)
{
OutPin->PinType = OutPinCase->PinType; // Copy type so it uses the right actor subclass
CompilerContext.MovePinLinksToIntermediate(*OutPinCase, *OutPin);
}
}
// Break any links to the expanded node
BreakAllNodeLinks();
}
void SGameplayTagGraphPin::ParseDefaultValueData()
{
FString TagString = GraphPinObj->GetDefaultAsString();
UK2Node_CallFunction* CallFuncNode = Cast<UK2Node_CallFunction>(GraphPinObj->GetOuter());
FilterString.Empty();
if (CallFuncNode)
{
UFunction* ThisFunction = CallFuncNode->GetTargetFunction();
if (ThisFunction)
{
if (ThisFunction->HasMetaData(TEXT("GameplayTagFilter")))
{
FilterString = ThisFunction->GetMetaData(TEXT("GameplayTagFilter"));
}
}
}
if (TagString.StartsWith(TEXT("(")) && TagString.EndsWith(TEXT(")")))
{
TagString = TagString.LeftChop(1);
TagString = TagString.RightChop(1);
TagString.Split("=", NULL, &TagString);
if (TagString.StartsWith(TEXT("\"")) && TagString.EndsWith(TEXT("\"")))
{
TagString = TagString.LeftChop(1);
TagString = TagString.RightChop(1);
}
}
if (!TagString.IsEmpty())
{
FGameplayTag Tag = IGameplayTagsModule::Get().GetGameplayTagsManager().RequestGameplayTag(FName(*TagString));
TagContainer->AddTag(Tag);
}
}
void UK2Node_EaseFunction::ExpandNode(class FKismetCompilerContext& CompilerContext, UEdGraph* SourceGraph)
{
Super::ExpandNode(CompilerContext, SourceGraph);
/**
At the end of this, the UK2Node_EaseFunction will not be a part of the Blueprint, it merely handles connecting
the other nodes into the Blueprint.
*/
UFunction* Function = UKismetMathLibrary::StaticClass()->FindFunctionByName(*EaseFunctionName);
if (Function == NULL)
{
CompilerContext.MessageLog.Error(*LOCTEXT("InvalidFunctionName", "BaseAsyncTask: Type not supported or not initialized. @@").ToString(), this);
return;
}
const UEdGraphSchema_K2* Schema = CompilerContext.GetSchema();
// The call function does all the real work, each child class implementing easing for a given type provides
// the name of the desired function
UK2Node_CallFunction* CallFunction = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(this, SourceGraph);
CallFunction->SetFromFunction(Function);
CallFunction->AllocateDefaultPins();
CompilerContext.MessageLog.NotifyIntermediateObjectCreation(CallFunction, this);
// Move the ease function and the alpha connections from us to the call function
CompilerContext.MovePinLinksToIntermediate(*FindPin(FEaseFunctionNodeHelper::GetEaseFuncPinName()), *CallFunction->FindPin(TEXT("EasingFunc")));
CompilerContext.MovePinLinksToIntermediate(*FindPin(FEaseFunctionNodeHelper::GetAlphaPinName()), *CallFunction->FindPin(TEXT("Alpha")));
// Move base connections to the call function's connections
CompilerContext.MovePinLinksToIntermediate(*FindPin(FEaseFunctionNodeHelper::GetAPinName()), *CallFunction->FindPin(TEXT("A")));
CompilerContext.MovePinLinksToIntermediate(*FindPin(FEaseFunctionNodeHelper::GetBPinName()), *CallFunction->FindPin(TEXT("B")));
CompilerContext.MovePinLinksToIntermediate(*FindPin(FEaseFunctionNodeHelper::GetResultPinName()), *CallFunction->GetReturnValuePin());
// Now move the custom pins to their new locations
UEdGraphPin* ShortestPathPin = FindPinChecked(FEaseFunctionNodeHelper::GetShortestPathPinName());
if (!ShortestPathPin->bHidden)
{
CompilerContext.MovePinLinksToIntermediate(*ShortestPathPin, *CallFunction->FindPinChecked(TEXT("bShortestPath")));
}
UEdGraphPin* BlendExpPin = FindPinChecked(FEaseFunctionNodeHelper::GetBlendExpPinName());
if (!BlendExpPin->bHidden)
{
CompilerContext.MovePinLinksToIntermediate(*BlendExpPin, *CallFunction->FindPinChecked(FEaseFunctionNodeHelper::GetBlendExpPinName()));
}
UEdGraphPin* StepsPin = FindPinChecked(FEaseFunctionNodeHelper::GetStepsPinName());
if (!StepsPin->bHidden)
{
CompilerContext.MovePinLinksToIntermediate(*StepsPin, *CallFunction->FindPinChecked(FEaseFunctionNodeHelper::GetStepsPinName()));
}
// Cleanup links to ourself and we are done!
BreakAllNodeLinks();
}
void UK2Node_GenericCreateObject::ExpandNode(class FKismetCompilerContext& CompilerContext, UEdGraph* SourceGraph)
{
UK2Node_CallFunction* CallCreateNode = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(this, SourceGraph);
CallCreateNode->FunctionReference.SetExternalMember(GET_FUNCTION_NAME_CHECKED(UGameplayStatics, SpawnObject), UGameplayStatics::StaticClass());
CallCreateNode->AllocateDefaultPins();
bool bSucceeded = true;
//connect exe
{
auto SpawnExecPin = GetExecPin();
auto CallExecPin = CallCreateNode->GetExecPin();
bSucceeded &= SpawnExecPin && CallExecPin && CompilerContext.MovePinLinksToIntermediate(*SpawnExecPin, *CallExecPin).CanSafeConnect();
}
//connect class
{
auto SpawnClassPin = GetClassPin();
auto CallClassPin = CallCreateNode->FindPin(TEXT("ObjectClass"));
bSucceeded &= SpawnClassPin && CallClassPin && CompilerContext.MovePinLinksToIntermediate(*SpawnClassPin, *CallClassPin).CanSafeConnect();
}
//connect outer
{
auto SpawnOuterPin = GetOuterPin();
auto CallOuterPin = CallCreateNode->FindPin(TEXT("Outer"));
bSucceeded &= SpawnOuterPin && CallOuterPin && CompilerContext.MovePinLinksToIntermediate(*SpawnOuterPin, *CallOuterPin).CanSafeConnect();
}
UEdGraphPin* CallResultPin = nullptr;
//connect result
{
auto SpawnResultPin = GetResultPin();
CallResultPin = CallCreateNode->GetReturnValuePin();
// cast HACK. It should be safe. The only problem is native code generation.
if (SpawnResultPin && CallResultPin)
{
CallResultPin->PinType = SpawnResultPin->PinType;
}
bSucceeded &= SpawnResultPin && CallResultPin && CompilerContext.MovePinLinksToIntermediate(*SpawnResultPin, *CallResultPin).CanSafeConnect();
}
//assign exposed values and connect then
{
auto LastThen = FKismetCompilerUtilities::GenerateAssignmentNodes(CompilerContext, SourceGraph, CallCreateNode, this, CallResultPin, GetClassToSpawn());
auto SpawnNodeThen = GetThenPin();
bSucceeded &= SpawnNodeThen && LastThen && CompilerContext.MovePinLinksToIntermediate(*SpawnNodeThen, *LastThen).CanSafeConnect();
}
BreakAllNodeLinks();
if (!bSucceeded)
{
CompilerContext.MessageLog.Error(*LOCTEXT("GenericCreateObject_Error", "ICE: GenericCreateObject error @@").ToString(), this);
}
}
void UK2Node_CastByteToEnum::ExpandNode(class FKismetCompilerContext& CompilerContext, UEdGraph* SourceGraph)
{
Super::ExpandNode(CompilerContext, SourceGraph);
if (bSafe && Enum)
{
const UEdGraphSchema_K2* Schema = CompilerContext.GetSchema();
// FUNCTION NODE
const FName FunctionName = GetFunctionName();
const UFunction* Function = UKismetNodeHelperLibrary::StaticClass()->FindFunctionByName(FunctionName);
check(NULL != Function);
UK2Node_CallFunction* CallValidation = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(this, SourceGraph);
CallValidation->SetFromFunction(Function);
CallValidation->AllocateDefaultPins();
check(CallValidation->IsNodePure());
// FUNCTION ENUM PIN
UEdGraphPin* FunctionEnumPin = CallValidation->FindPinChecked(TEXT("Enum"));
Schema->TrySetDefaultObject(*FunctionEnumPin, Enum);
check(FunctionEnumPin->DefaultObject == Enum);
// FUNCTION INPUT BYTE PIN
UEdGraphPin* OrgInputPin = FindPinChecked(ByteInputPinName);
UEdGraphPin* FunctionIndexPin = CallValidation->FindPinChecked(TEXT("EnumeratorIndex"));
check(EGPD_Input == FunctionIndexPin->Direction && Schema->PC_Byte == FunctionIndexPin->PinType.PinCategory);
CompilerContext.MovePinLinksToIntermediate(*OrgInputPin, *FunctionIndexPin);
// UNSAFE CAST NODE
UK2Node_CastByteToEnum* UsafeCast = CompilerContext.SpawnIntermediateNode<UK2Node_CastByteToEnum>(this, SourceGraph);
UsafeCast->Enum = Enum;
UsafeCast->bSafe = false;
UsafeCast->AllocateDefaultPins();
// UNSAFE CAST INPUT
UEdGraphPin* CastInputPin = UsafeCast->FindPinChecked(ByteInputPinName);
UEdGraphPin* FunctionReturnPin = CallValidation->GetReturnValuePin();
check(NULL != FunctionReturnPin);
Schema->TryCreateConnection(CastInputPin, FunctionReturnPin);
// OPUTPUT PIN
UEdGraphPin* OrgReturnPin = FindPinChecked(Schema->PN_ReturnValue);
UEdGraphPin* NewReturnPin = UsafeCast->FindPinChecked(Schema->PN_ReturnValue);
CompilerContext.MovePinLinksToIntermediate(*OrgReturnPin, *NewReturnPin);
BreakAllNodeLinks();
}
}
void UK2Node_Message::ExpandNode(class FKismetCompilerContext& CompilerContext, UEdGraph* SourceGraph)
{
Super::ExpandNode(CompilerContext, SourceGraph);
const UEdGraphSchema_K2* Schema = CompilerContext.GetSchema();
UEdGraphPin* ExecPin = Schema->FindExecutionPin(*this, EGPD_Input);
const bool bExecPinConnected = ExecPin && (ExecPin->LinkedTo.Num() > 0);
UEdGraphPin* ThenPin = Schema->FindExecutionPin(*this, EGPD_Output);
const bool bThenPinConnected = ThenPin && (ThenPin->LinkedTo.Num() > 0);
// Skip ourselves if our exec isn't wired up
if (bExecPinConnected)
{
// Make sure our interface is valid
if (FunctionReference.GetMemberParentClass(this) == NULL)
{
CompilerContext.MessageLog.Error(*FString::Printf(*LOCTEXT("MessageNodeInvalid_Error", "Message node @@ has an invalid interface.").ToString()), this);
return;
}
UFunction* MessageNodeFunction = GetTargetFunction();
if (MessageNodeFunction == NULL)
{
//@TODO: Why do this here in teh compiler, it's already done on AllocateDefaultPins() during on-load node reconstruction
MessageNodeFunction = Cast<UFunction>(UK2Node::FindRemappedField(FunctionReference.GetMemberParentClass(this), FunctionReference.GetMemberName()));
}
if (MessageNodeFunction == NULL)
{
CompilerContext.MessageLog.Error(*FString::Printf(*LOCTEXT("MessageNodeInvalidFunction_Error", "Unable to find function with name %s for Message node @@.").ToString(), *(FunctionReference.GetMemberName().ToString())), this);
return;
}
// Check to make sure we have a target
UEdGraphPin* MessageSelfPin = Schema->FindSelfPin(*this, EGPD_Input);
if( !MessageSelfPin || MessageSelfPin->LinkedTo.Num() == 0 )
{
CompilerContext.MessageLog.Error(*FString::Printf(*LOCTEXT("MessageNodeSelfPin_Error", "Message node @@ must have a valid target or reference to self.").ToString()), this);
return;
}
// First, create an internal cast-to-interface node
UK2Node_DynamicCast* CastToInterfaceNode = CompilerContext.SpawnIntermediateNode<UK2Node_DynamicCast>(this, SourceGraph);
CastToInterfaceNode->TargetType = MessageNodeFunction->GetOuterUClass();
CastToInterfaceNode->SetPurity(false);
CastToInterfaceNode->AllocateDefaultPins();
UEdGraphPin* CastToInterfaceResultPin = CastToInterfaceNode->GetCastResultPin();
if( !CastToInterfaceResultPin )
{
CompilerContext.MessageLog.Error(*LOCTEXT("InvalidInterfaceClass_Error", "Node @@ has an invalid target interface class").ToString(), this);
return;
}
CastToInterfaceResultPin->PinType.PinSubCategoryObject = *CastToInterfaceNode->TargetType;
if (ExecPin != nullptr)
{
UEdGraphPin* CastExecInput = CastToInterfaceNode->GetExecPin();
check(CastExecInput != nullptr);
// Wire up the connections
CompilerContext.MovePinLinksToIntermediate(*ExecPin, *CastExecInput);
}
UEdGraphPin* CastToInterfaceSourceObjectPin = CastToInterfaceNode->GetCastSourcePin();
CompilerContext.MovePinLinksToIntermediate(*MessageSelfPin, *CastToInterfaceSourceObjectPin);
// Next, create the function call node
UK2Node_CallFunction* FunctionCallNode = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(this, SourceGraph);
FunctionCallNode->bIsInterfaceCall = true;
FunctionCallNode->FunctionReference = FunctionReference;
FunctionCallNode->AllocateDefaultPins();
UEdGraphPin* CastToInterfaceValidPin = CastToInterfaceNode->GetValidCastPin();
check(CastToInterfaceValidPin != nullptr);
UEdGraphPin* LastOutCastFaildPin = CastToInterfaceNode->GetInvalidCastPin();
check(LastOutCastFaildPin != nullptr);
UEdGraphPin* LastOutCastSuccessPin = CastToInterfaceValidPin;
// Wire up the connections
if (UEdGraphPin* CallFunctionExecPin = Schema->FindExecutionPin(*FunctionCallNode, EGPD_Input))
{
CastToInterfaceValidPin->MakeLinkTo(CallFunctionExecPin);
LastOutCastSuccessPin = Schema->FindExecutionPin(*FunctionCallNode, EGPD_Output);
}
// Self pin
UEdGraphPin* FunctionCallSelfPin = Schema->FindSelfPin(*FunctionCallNode, EGPD_Input);
CastToInterfaceResultPin->MakeLinkTo(FunctionCallSelfPin);
UFunction* ArrayClearFunction = UKismetArrayLibrary::StaticClass()->FindFunctionByName(FName(TEXT("Array_Clear")));
check(ArrayClearFunction);
bool const bIsPureFunc = Super::IsNodePure();
// Variable pins - Try to associate variable inputs to the message node with the variable inputs and outputs to the call function node
for( int32 i = 0; i < Pins.Num(); i++ )
{
UEdGraphPin* CurrentPin = Pins[i];
if( CurrentPin && (CurrentPin->PinType.PinCategory != Schema->PC_Exec) && (CurrentPin->PinName != Schema->PN_Self) )
{
// Try to find a match for the pin on the function call node
UEdGraphPin* FunctionCallPin = FunctionCallNode->FindPin(CurrentPin->PinName);
if( FunctionCallPin )
{
// Move pin links if the pin is connected...
CompilerContext.MovePinLinksToIntermediate(*CurrentPin, *FunctionCallPin);
// when cast fails all return values must be cleared.
if (EEdGraphPinDirection::EGPD_Output == CurrentPin->Direction)
{
UEdGraphPin* VarOutPin = FunctionCallPin;
if (bIsPureFunc)
{
// since we cannot directly use the output from the
// function call node (since it is pure, and invoking
// it with a null target would cause an error), we
// have to use a temporary variable in it's place...
UK2Node_TemporaryVariable* TempVar = CompilerContext.SpawnIntermediateNode<UK2Node_TemporaryVariable>(this, SourceGraph);
TempVar->VariableType = CurrentPin->PinType;
TempVar->AllocateDefaultPins();
VarOutPin = TempVar->GetVariablePin();
// nodes using the function's outputs directly, now
// use this TempVar node instead
CompilerContext.MovePinLinksToIntermediate(*FunctionCallPin, *VarOutPin);
// on a successful cast, the temp var is filled with
// the function's value, on a failed cast, the var
// is filled with a default value (DefaultValueNode,
// below)... this is the node for the success case:
UK2Node_AssignmentStatement* AssignTempVar = CompilerContext.SpawnIntermediateNode<UK2Node_AssignmentStatement>(this, SourceGraph);
AssignTempVar->AllocateDefaultPins();
// assign the output from the pure function node to
// the TempVar (either way, this message node is
// returning the TempVar's value, so on a successful
// cast we want it to have the function's result)
UEdGraphPin* ValueInPin = AssignTempVar->GetValuePin();
Schema->TryCreateConnection(FunctionCallPin, ValueInPin);
AssignTempVar->PinConnectionListChanged(ValueInPin);
UEdGraphPin* VarInPin = AssignTempVar->GetVariablePin();
Schema->TryCreateConnection(VarOutPin, VarInPin);
AssignTempVar->PinConnectionListChanged(VarInPin);
// fold this AssignTempVar node into the cast's
// success execution chain
Schema->TryCreateConnection(AssignTempVar->GetExecPin(), LastOutCastSuccessPin);
LastOutCastSuccessPin = AssignTempVar->GetThenPin();
}
UK2Node* DefaultValueNode = NULL;
UEdGraphPin* DefaultValueThenPin = NULL;
if (CurrentPin->PinType.bIsArray)
{
UK2Node_CallArrayFunction* ClearArray = CompilerContext.SpawnIntermediateNode<UK2Node_CallArrayFunction>(this, SourceGraph);
DefaultValueNode = ClearArray;
ClearArray->SetFromFunction(ArrayClearFunction);
ClearArray->AllocateDefaultPins();
UEdGraphPin* ArrayPin = ClearArray->GetTargetArrayPin();
check(ArrayPin);
Schema->TryCreateConnection(ArrayPin, VarOutPin);
ClearArray->PinConnectionListChanged(ArrayPin);
DefaultValueThenPin = ClearArray->GetThenPin();
}
else
{
UK2Node_AssignmentStatement* AssignDefaultValue = CompilerContext.SpawnIntermediateNode<UK2Node_AssignmentStatement>(this, SourceGraph);
DefaultValueNode = AssignDefaultValue;
AssignDefaultValue->AllocateDefaultPins();
Schema->TryCreateConnection(AssignDefaultValue->GetVariablePin(), VarOutPin);
AssignDefaultValue->PinConnectionListChanged(AssignDefaultValue->GetVariablePin());
Schema->SetPinDefaultValueBasedOnType(AssignDefaultValue->GetValuePin());
DefaultValueThenPin = AssignDefaultValue->GetThenPin();
}
UEdGraphPin* DefaultValueExecPin = DefaultValueNode->GetExecPin();
check(DefaultValueExecPin);
Schema->TryCreateConnection(DefaultValueExecPin, LastOutCastFaildPin);
LastOutCastFaildPin = DefaultValueThenPin;
check(LastOutCastFaildPin);
}
}
else
{
UE_LOG(LogK2Compiler, Log, TEXT("%s"), *LOCTEXT("NoPinConnectionFound_Error", "Unable to find connection for pin! Check AllocateDefaultPins() for consistency!").ToString());
}
}
}
if( bThenPinConnected )
{
check(LastOutCastFaildPin != nullptr);
// Failure case for the cast runs straight through to the exit
CompilerContext.CopyPinLinksToIntermediate(*ThenPin, *LastOutCastFaildPin);
check(LastOutCastSuccessPin != nullptr);
// Copy all links from the invalid cast case above to the call function node
CompilerContext.MovePinLinksToIntermediate(*ThenPin, *LastOutCastSuccessPin);
}
}
// Break all connections to the original node, so it will be pruned
BreakAllNodeLinks();
}
void UK2Node_VariableGet::ExpandNode(class FKismetCompilerContext& CompilerContext, UEdGraph* SourceGraph)
{
Super::ExpandNode(CompilerContext, SourceGraph);
// Do not attempt to expand the node when not a pure get nor when there is no property. Normal compilation error detection will detect the missing property.
if (!bIsPureGet && GetPropertyForVariable() != nullptr)
{
const UEdGraphSchema_K2* Schema = CompilerContext.GetSchema();
UEdGraphPin* ValuePin = GetValuePin();
// Impure Get nodes convert into three nodes:
// 1. A pure Get node
// 2. An IsValid node
// 3. A Branch node (only impure part
// Create the impure Get node
UK2Node_VariableGet* VariableGetNode = CompilerContext.SpawnIntermediateNode<UK2Node_VariableGet>(this, SourceGraph);
VariableGetNode->VariableReference = VariableReference;
VariableGetNode->AllocateDefaultPins();
CompilerContext.MessageLog.NotifyIntermediateObjectCreation(VariableGetNode, this);
// Move pin links from Get node we are expanding, to the new pure one we've created
CompilerContext.MovePinLinksToIntermediate(*ValuePin, *VariableGetNode->GetValuePin());
if (!VariableReference.IsLocalScope())
{
CompilerContext.MovePinLinksToIntermediate(*FindPin(Schema->PN_Self), *VariableGetNode->FindPin(Schema->PN_Self));
}
// Create the IsValid node
UK2Node_CallFunction* IsValidFunction = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(this, SourceGraph);
// Based on if the type is an "Object" or a "Class" changes which function to use
if (ValuePin->PinType.PinCategory == UObject::StaticClass()->GetName())
{
IsValidFunction->SetFromFunction(UKismetSystemLibrary::StaticClass()->FindFunctionByName(GET_MEMBER_NAME_CHECKED(UKismetSystemLibrary, IsValid)));
}
else if (ValuePin->PinType.PinCategory == UClass::StaticClass()->GetName())
{
IsValidFunction->SetFromFunction(UKismetSystemLibrary::StaticClass()->FindFunctionByName(GET_MEMBER_NAME_CHECKED(UKismetSystemLibrary, IsValidClass)));
}
IsValidFunction->AllocateDefaultPins();
CompilerContext.MessageLog.NotifyIntermediateObjectCreation(IsValidFunction, this);
// Connect the value pin from the new Get node to the IsValid
UEdGraphPin* ObjectPin = IsValidFunction->Pins[1];
check(ObjectPin->Direction == EGPD_Input);
ObjectPin->MakeLinkTo(VariableGetNode->GetValuePin());
// Create the Branch node
UK2Node_IfThenElse* BranchNode = CompilerContext.SpawnIntermediateNode<UK2Node_IfThenElse>(this, SourceGraph);
BranchNode->AllocateDefaultPins();
CompilerContext.MessageLog.NotifyIntermediateObjectCreation(BranchNode, this);
// Connect the bool output pin from IsValid node to the Branch node
UEdGraphPin* BoolPin = IsValidFunction->Pins[2];
check(BoolPin->Direction == EGPD_Output);
BoolPin->MakeLinkTo(BranchNode->GetConditionPin());
// Connect the Branch node to the input of the impure Get node
CompilerContext.MovePinLinksToIntermediate(*GetExecPin(), *BranchNode->GetExecPin());
// Move the two Branch pins to the Branch node
CompilerContext.MovePinLinksToIntermediate(*FindPin(Schema->PN_Then), *BranchNode->FindPin(Schema->PN_Then));
CompilerContext.MovePinLinksToIntermediate(*FindPin(Schema->PN_Else), *BranchNode->FindPin(Schema->PN_Else));
BreakAllNodeLinks();
}
}
void UK2Node_SpawnActor::ExpandNode(class FKismetCompilerContext& CompilerContext, UEdGraph* SourceGraph)
{
Super::ExpandNode(CompilerContext, SourceGraph);
if (CompilerContext.bIsFullCompile)
{
static FName BeginSpawningBlueprintFuncName = GET_FUNCTION_NAME_CHECKED(UGameplayStatics, BeginSpawningActorFromBlueprint);
static FString BlueprintParamName = FString(TEXT("Blueprint"));
static FString WorldContextParamName = FString(TEXT("WorldContextObject"));
static FName FinishSpawningFuncName = GET_FUNCTION_NAME_CHECKED(UGameplayStatics, FinishSpawningActor);
static FString ActorParamName = FString(TEXT("Actor"));
static FString TransformParamName = FString(TEXT("SpawnTransform"));
static FString NoCollisionFailParamName = FString(TEXT("bNoCollisionFail"));
static FString ObjectParamName = FString(TEXT("Object"));
static FString ValueParamName = FString(TEXT("Value"));
static FString PropertyNameParamName = FString(TEXT("PropertyName"));
const UEdGraphSchema_K2* Schema = CompilerContext.GetSchema();
UEdGraphPin* SpawnNodeExec = GetExecPin();
UEdGraphPin* SpawnNodeTransform = GetSpawnTransformPin();
UEdGraphPin* SpawnNodeNoCollisionFail = GetNoCollisionFailPin();
UEdGraphPin* SpawnWorldContextPin = GetWorldContextPin();
UEdGraphPin* SpawnBlueprintPin = GetBlueprintPin();
UEdGraphPin* SpawnNodeThen = GetThenPin();
UEdGraphPin* SpawnNodeResult = GetResultPin();
UBlueprint* SpawnBlueprint = NULL;
if(SpawnBlueprintPin != NULL)
{
SpawnBlueprint = Cast<UBlueprint>(SpawnBlueprintPin->DefaultObject);
}
if(0 == SpawnBlueprintPin->LinkedTo.Num())
{
if(NULL == SpawnBlueprint)
{
CompilerContext.MessageLog.Error(*LOCTEXT("SpawnActorNodeMissingBlueprint_Error", "Spawn node @@ must have a blueprint specified.").ToString(), this);
// we break exec links so this is the only error we get, don't want the SpawnActor node being considered and giving 'unexpected node' type warnings
BreakAllNodeLinks();
return;
}
// check if default blueprint is based on Actor
const UClass* GeneratedClass = SpawnBlueprint->GeneratedClass;
bool bInvalidBase = GeneratedClass && !GeneratedClass->IsChildOf(AActor::StaticClass());
const UClass* SkeletonGeneratedClass = Cast<UClass>(SpawnBlueprint->SkeletonGeneratedClass);
bInvalidBase |= SkeletonGeneratedClass && !SkeletonGeneratedClass->IsChildOf(AActor::StaticClass());
if(bInvalidBase)
{
CompilerContext.MessageLog.Error(*LOCTEXT("SpawnActorNodeInvalidBlueprint_Error", "Spawn node @@ must have a blueprint based on Actor specified.").ToString(), this);
// we break exec links so this is the only error we get, don't want the SpawnActor node being considered and giving 'unexpected node' type warnings
BreakAllNodeLinks();
return;
}
}
//////////////////////////////////////////////////////////////////////////
// create 'begin spawn' call node
UK2Node_CallFunction* CallBeginSpawnNode = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(this, SourceGraph);
CallBeginSpawnNode->FunctionReference.SetExternalMember(BeginSpawningBlueprintFuncName, UGameplayStatics::StaticClass());
CallBeginSpawnNode->AllocateDefaultPins();
UEdGraphPin* CallBeginExec = CallBeginSpawnNode->GetExecPin();
UEdGraphPin* CallBeginWorldContextPin = CallBeginSpawnNode->FindPinChecked(WorldContextParamName);
UEdGraphPin* CallBeginBlueprintPin = CallBeginSpawnNode->FindPinChecked(BlueprintParamName);
UEdGraphPin* CallBeginTransform = CallBeginSpawnNode->FindPinChecked(TransformParamName);
UEdGraphPin* CallBeginNoCollisionFail = CallBeginSpawnNode->FindPinChecked(NoCollisionFailParamName);
UEdGraphPin* CallBeginResult = CallBeginSpawnNode->GetReturnValuePin();
// Move 'exec' connection from spawn node to 'begin spawn'
CompilerContext.MovePinLinksToIntermediate(*SpawnNodeExec, *CallBeginExec);
if(SpawnBlueprintPin->LinkedTo.Num() > 0)
{
// Copy the 'blueprint' connection from the spawn node to 'begin spawn'
CompilerContext.MovePinLinksToIntermediate(*SpawnBlueprintPin, *CallBeginBlueprintPin);
}
else
{
// Copy blueprint literal onto begin spawn call
CallBeginBlueprintPin->DefaultObject = SpawnBlueprint;
}
// Copy the world context connection from the spawn node to 'begin spawn' if necessary
if (SpawnWorldContextPin)
{
CompilerContext.MovePinLinksToIntermediate(*SpawnWorldContextPin, *CallBeginWorldContextPin);
}
// Copy the 'transform' connection from the spawn node to 'begin spawn'
CompilerContext.MovePinLinksToIntermediate(*SpawnNodeTransform, *CallBeginTransform);
// Copy the 'bNoCollisionFail' connection from the spawn node to 'begin spawn'
CompilerContext.MovePinLinksToIntermediate(*SpawnNodeNoCollisionFail, *CallBeginNoCollisionFail);
//////////////////////////////////////////////////////////////////////////
// create 'finish spawn' call node
UK2Node_CallFunction* CallFinishSpawnNode = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(this, SourceGraph);
CallFinishSpawnNode->FunctionReference.SetExternalMember(FinishSpawningFuncName, UGameplayStatics::StaticClass());
CallFinishSpawnNode->AllocateDefaultPins();
UEdGraphPin* CallFinishExec = CallFinishSpawnNode->GetExecPin();
UEdGraphPin* CallFinishThen = CallFinishSpawnNode->GetThenPin();
UEdGraphPin* CallFinishActor = CallFinishSpawnNode->FindPinChecked(ActorParamName);
UEdGraphPin* CallFinishTransform = CallFinishSpawnNode->FindPinChecked(TransformParamName);
UEdGraphPin* CallFinishResult = CallFinishSpawnNode->GetReturnValuePin();
// Move 'then' connection from spawn node to 'finish spawn'
CompilerContext.MovePinLinksToIntermediate(*SpawnNodeThen, *CallFinishThen);
// Copy transform connection
CompilerContext.CopyPinLinksToIntermediate(*CallBeginTransform, *CallFinishTransform);
// Connect output actor from 'begin' to 'finish'
CallBeginResult->MakeLinkTo(CallFinishActor);
// Move result connection from spawn node to 'finish spawn'
CallFinishResult->PinType = SpawnNodeResult->PinType; // Copy type so it uses the right actor subclass
CompilerContext.MovePinLinksToIntermediate(*SpawnNodeResult, *CallFinishResult);
//////////////////////////////////////////////////////////////////////////
// create 'set var' nodes
// Get 'result' pin from 'begin spawn', this is the actual actor we want to set properties on
UK2Node_CallFunction* LastNode = CallBeginSpawnNode;
// Create 'set var by name' nodes and hook them up
for(int32 PinIdx=0; PinIdx < Pins.Num(); PinIdx++)
{
// Only create 'set param by name' node if this pin is linked to something
UEdGraphPin* SpawnVarPin = Pins[PinIdx];
if(SpawnVarPin->LinkedTo.Num() > 0)
{
UFunction* SetByNameFunction = Schema->FindSetVariableByNameFunction(SpawnVarPin->PinType);
if(SetByNameFunction)
{
UK2Node_CallFunction* SetVarNode = NULL;
if(SpawnVarPin->PinType.bIsArray)
{
SetVarNode = CompilerContext.SpawnIntermediateNode<UK2Node_CallArrayFunction>(this, SourceGraph);
}
else
{
SetVarNode = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(this, SourceGraph);
}
SetVarNode->SetFromFunction(SetByNameFunction);
SetVarNode->AllocateDefaultPins();
// Connect this node into the exec chain
UEdGraphPin* LastThen = LastNode->GetThenPin();
UEdGraphPin* SetVarExec = SetVarNode->GetExecPin();
LastThen->MakeLinkTo(SetVarExec);
// Connect the new actor to the 'object' pin
UEdGraphPin* ObjectPin = SetVarNode->FindPinChecked(ObjectParamName);
CallBeginResult->MakeLinkTo(ObjectPin);
// Fill in literal for 'property name' pin - name of pin is property name
UEdGraphPin* PropertyNamePin = SetVarNode->FindPinChecked(PropertyNameParamName);
PropertyNamePin->DefaultValue = SpawnVarPin->PinName;
// Move connection from the variable pin on the spawn node to the 'value' pin
UEdGraphPin* ValuePin = SetVarNode->FindPinChecked(ValueParamName);
CompilerContext.MovePinLinksToIntermediate(*SpawnVarPin, *ValuePin);
if(SpawnVarPin->PinType.bIsArray)
{
SetVarNode->PinConnectionListChanged(ValuePin);
}
// Update 'last node in sequence' var
LastNode = SetVarNode;
}
}
}
// Make exec connection between 'then' on last node and 'finish'
UEdGraphPin* LastThen = LastNode->GetThenPin();
LastThen->MakeLinkTo(CallFinishExec);
// Break any links to the expanded node
BreakAllNodeLinks();
}
}
bool BuildLoop(UK2Node* Node, FKismetCompilerContext& CompilerContext, UEdGraph* SourceGraph)
{
const UEdGraphSchema_K2* Schema = CompilerContext.GetSchema();
check(Node && SourceGraph && Schema);
bool bResult = true;
// Create int Loop Counter
UK2Node_TemporaryVariable* LoopCounterNode = CompilerContext.SpawnIntermediateNode<UK2Node_TemporaryVariable>(Node, SourceGraph);
LoopCounterNode->VariableType.PinCategory = Schema->PC_Int;
LoopCounterNode->AllocateDefaultPins();
LoopCounterOutPin = LoopCounterNode->GetVariablePin();
check(LoopCounterOutPin);
// Initialize loop counter
UK2Node_AssignmentStatement* LoopCounterInitialize = CompilerContext.SpawnIntermediateNode<UK2Node_AssignmentStatement>(Node, SourceGraph);
LoopCounterInitialize->AllocateDefaultPins();
LoopCounterInitialize->GetValuePin()->DefaultValue = TEXT("0");
bResult &= Schema->TryCreateConnection(LoopCounterOutPin, LoopCounterInitialize->GetVariablePin());
StartLoopExecInPin = LoopCounterInitialize->GetExecPin();
check(StartLoopExecInPin);
// Create int Array Index
UK2Node_TemporaryVariable* ArrayIndexNode = CompilerContext.SpawnIntermediateNode<UK2Node_TemporaryVariable>(Node, SourceGraph);
ArrayIndexNode->VariableType.PinCategory = Schema->PC_Int;
ArrayIndexNode->AllocateDefaultPins();
ArrayIndexOutPin = ArrayIndexNode->GetVariablePin();
check(ArrayIndexOutPin);
// Initialize array index
UK2Node_AssignmentStatement* ArrayIndexInitialize = CompilerContext.SpawnIntermediateNode<UK2Node_AssignmentStatement>(Node, SourceGraph);
ArrayIndexInitialize->AllocateDefaultPins();
ArrayIndexInitialize->GetValuePin()->DefaultValue = TEXT("0");
bResult &= Schema->TryCreateConnection(ArrayIndexOutPin, ArrayIndexInitialize->GetVariablePin());
bResult &= Schema->TryCreateConnection(LoopCounterInitialize->GetThenPin(), ArrayIndexInitialize->GetExecPin());
// Do loop branch
UK2Node_IfThenElse* Branch = CompilerContext.SpawnIntermediateNode<UK2Node_IfThenElse>(Node, SourceGraph);
Branch->AllocateDefaultPins();
bResult &= Schema->TryCreateConnection(ArrayIndexInitialize->GetThenPin(), Branch->GetExecPin());
LoopCompleteOutExecPin = Branch->GetElsePin();
check(LoopCompleteOutExecPin);
// Do loop condition
UK2Node_CallFunction* Condition = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(Node, SourceGraph);
Condition->SetFromFunction(UKismetMathLibrary::StaticClass()->FindFunctionByName(TEXT("Less_IntInt")));
Condition->AllocateDefaultPins();
bResult &= Schema->TryCreateConnection(Condition->GetReturnValuePin(), Branch->GetConditionPin());
bResult &= Schema->TryCreateConnection(Condition->FindPinChecked(TEXT("A")), LoopCounterOutPin);
LoopCounterLimitInPin = Condition->FindPinChecked(TEXT("B"));
check(LoopCounterLimitInPin);
// Array Index assigned
UK2Node_AssignmentStatement* ArrayIndexAssign = CompilerContext.SpawnIntermediateNode<UK2Node_AssignmentStatement>(Node, SourceGraph);
ArrayIndexAssign->AllocateDefaultPins();
bResult &= Schema->TryCreateConnection(Branch->GetThenPin(), ArrayIndexAssign->GetExecPin());
bResult &= Schema->TryCreateConnection(ArrayIndexAssign->GetVariablePin(), ArrayIndexOutPin);
bResult &= Schema->TryCreateConnection(ArrayIndexAssign->GetValuePin(), LoopCounterOutPin);
// body sequence
UK2Node_ExecutionSequence* Sequence = CompilerContext.SpawnIntermediateNode<UK2Node_ExecutionSequence>(Node, SourceGraph);
Sequence->AllocateDefaultPins();
bResult &= Schema->TryCreateConnection(ArrayIndexAssign->GetThenPin(), Sequence->GetExecPin());
InsideLoopExecOutPin = Sequence->GetThenPinGivenIndex(0);
check(InsideLoopExecOutPin);
// Loop Counter increment
UK2Node_CallFunction* Increment = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(Node, SourceGraph);
Increment->SetFromFunction(UKismetMathLibrary::StaticClass()->FindFunctionByName(TEXT("Add_IntInt")));
Increment->AllocateDefaultPins();
bResult &= Schema->TryCreateConnection(Increment->FindPinChecked(TEXT("A")), LoopCounterOutPin);
Increment->FindPinChecked(TEXT("B"))->DefaultValue = TEXT("1");
// Loop Counter assigned
UK2Node_AssignmentStatement* LoopCounterAssign = CompilerContext.SpawnIntermediateNode<UK2Node_AssignmentStatement>(Node, SourceGraph);
LoopCounterAssign->AllocateDefaultPins();
bResult &= Schema->TryCreateConnection(LoopCounterAssign->GetExecPin(), Sequence->GetThenPinGivenIndex(1));
bResult &= Schema->TryCreateConnection(LoopCounterAssign->GetVariablePin(), LoopCounterOutPin);
bResult &= Schema->TryCreateConnection(LoopCounterAssign->GetValuePin(), Increment->GetReturnValuePin());
bResult &= Schema->TryCreateConnection(LoopCounterAssign->GetThenPin(), Branch->GetExecPin());
return bResult;
}
void UK2Node_LiveEditObject::ExpandNode(class FKismetCompilerContext& CompilerContext, UEdGraph* SourceGraph)
{
Super::ExpandNode(CompilerContext, SourceGraph);
const UEdGraphSchema_K2* Schema = CompilerContext.GetSchema();
UEdGraphPin *SourceExecPin = GetExecPin();
UEdGraphPin *SourceThenPin = GetThenPin();
UEdGraphPin *SourceBlueprintPin = GetBlueprintPin();
UEdGraphPin *SourceBaseClassPin = GetBaseClassPin();
UEdGraphPin *SourceDescriptionPin = GetDescriptionPin();
UEdGraphPin *SourcePermittedBindingsPin = GetPermittedBindingsPin();
UEdGraphPin *SourceOnMidiInputPin = GetOnMidiInputPin();
UEdGraphPin *SourceVariablePin = GetVariablePin();
if(NULL == SourceVariablePin)
{
CompilerContext.MessageLog.Error(*LOCTEXT("LiveEditObjectNodeMissingBlueprint_Error", "LiveEdit node @@ must have a blueprint specified and a variable selected to tune.").ToString(), this);
// we break exec links so this is the only error we get, don't want the SpawnActor node being considered and giving 'unexpected node' type warnings
BreakAllNodeLinks();
return;
}
UClass* SpawnClass = GetClassToSpawn();
if(NULL == SpawnClass)
{
CompilerContext.MessageLog.Error(*LOCTEXT("LiveEditObjectNodeMissingBaseClass_Error", "LiveEdit node @@ must have a Base Class specified.").ToString(), this);
// we break exec links so this is the only error we get, don't want the SpawnActor node being considered and giving 'unexpected node' type warnings
BreakAllNodeLinks();
return;
}
if ( SourcePermittedBindingsPin->LinkedTo.Num() == 0 )
{
CompilerContext.MessageLog.Error(*LOCTEXT("LiveEditObjectNodeMissingBinding_Error", "LiveEdit node @@ must specify Permitted Bindings.").ToString(), this);
// we break exec links so this is the only error we get, don't want the SpawnActor node being considered and giving 'unexpected node' type warnings
BreakAllNodeLinks();
return;
}
//sanity check the VariablePin value
{
UProperty *Property = UK2Node_LiveEditObjectStatics::GetPropertyByName( SpawnClass, *SourceVariablePin->DefaultValue );
if ( Property == NULL || !Property->IsA(UNumericProperty::StaticClass()) )
{
CompilerContext.MessageLog.Error(*LOCTEXT("LiveEditObjectNodeInvalidVariable_Error", "LiveEdit node @@ must have a valid variable selected.").ToString(), this);
// we break exec links so this is the only error we get, don't want the SpawnActor node being considered and giving 'unexpected node' type warnings
BreakAllNodeLinks();
return;
}
}
//hooks to pins that are generated after a BaseClass is set
UEdGraphPin *DeltaMultPin = GetDeltaMultPin();
UEdGraphPin *ShouldClampPin = GetShouldClampPin();
UEdGraphPin *ClampMinPin = GetClampMinPin();
UEdGraphPin *ClampMaxPin = GetClampMaxPin();
UK2Node_Self *SelfNode = CompilerContext.SpawnIntermediateNode<UK2Node_Self>(this,SourceGraph);
SelfNode->AllocateDefaultPins();
UEdGraphPin *SelfNodeThenPin = SelfNode->FindPinChecked(Schema->PN_Self);
FString EventNameGuid = GetEventName();
//Create the registration part of the LiveEditor binding process
{
UK2Node_CallFunction *RegisterForMIDINode = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(this,SourceGraph);
RegisterForMIDINode->FunctionReference.SetExternalMember( TEXT("RegisterForLiveEditEvent"), ULiveEditorKismetLibrary::StaticClass() );
RegisterForMIDINode->AllocateDefaultPins();
UEdGraphPin *ExecPin = RegisterForMIDINode->GetExecPin();
CompilerContext.MovePinLinksToIntermediate(*SourceExecPin, *ExecPin);
UEdGraphPin *ThenPin = RegisterForMIDINode->GetThenPin();
CompilerContext.MovePinLinksToIntermediate(*SourceThenPin, *ThenPin);
UEdGraphPin *TargetPin = RegisterForMIDINode->FindPinChecked( FString(TEXT("Target")) );
TargetPin->MakeLinkTo(SelfNodeThenPin);
UEdGraphPin *EventNamePin = RegisterForMIDINode->FindPinChecked( FString(TEXT("EventName")) );
EventNamePin->DefaultValue = EventNameGuid;
UEdGraphPin *DescriptionPin = RegisterForMIDINode->FindPinChecked( FString(TEXT("Description")) );
CompilerContext.CopyPinLinksToIntermediate( *SourceDescriptionPin, *DescriptionPin);
UEdGraphPin *PermittedBindingsPin = RegisterForMIDINode->FindPinChecked( FString(TEXT("PermittedBindings")) );
CompilerContext.CopyPinLinksToIntermediate( *SourcePermittedBindingsPin, *PermittedBindingsPin);
}
//Create the event handling part of the LiveEditor binding process
{
//
//the event itself
//
UFunction *EventMIDISignature = GetEventMIDISignature();
UK2Node_Event* EventNode = CompilerContext.SpawnIntermediateNode<UK2Node_Event>(this, SourceGraph);
check(EventNode);
EventNode->EventSignatureClass = Cast<UClass>(EventMIDISignature->GetOuter());
EventNode->EventSignatureName = EventMIDISignature->GetFName();
EventNode->CustomFunctionName = *EventNameGuid;
EventNode->bInternalEvent = true;
EventNode->AllocateDefaultPins();
// Cache these out because we'll connect the sequence to it
UEdGraphPin *EventThenPin = EventNode->FindPinChecked( Schema->PN_Then );
UEdGraphPin *EventDeltaPin = EventNode->FindPinChecked( FString(TEXT("Delta")) );
UEdGraphPin *EventMidiValuePin = EventNode->FindPinChecked( FString(TEXT("MidiValue")) );
UEdGraphPin *EventControlTypePin = EventNode->FindPinChecked( FString(TEXT("ControlType")) );
//
// Check if Blueprint is NULL
//
UEdGraphPin *CompareBlueprintToNullBranchThenPin = NULL;
{
UK2Node_CallFunction *CompareBlueprintToNullNode = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(this,SourceGraph);
CompareBlueprintToNullNode->FunctionReference.SetExternalMember( TEXT("NotEqual_ObjectObject"), UKismetMathLibrary::StaticClass() );
CompareBlueprintToNullNode->AllocateDefaultPins();
//Set A Pin to the Blueprint Pin
UEdGraphPin *CompareBlueprintToNullAPin = CompareBlueprintToNullNode->FindPinChecked( FString(TEXT("A")) );
CompilerContext.CopyPinLinksToIntermediate( *SourceBlueprintPin, *CompareBlueprintToNullAPin);
// hook for Compare Blueprint to NULL result
UEdGraphPin *CompareBlueprintToNullResultPin = CompareBlueprintToNullNode->GetReturnValuePin();
// Create the BRANCH that will drive the comparison
UK2Node_IfThenElse* CompareBlueprintToNullBranchNode = CompilerContext.SpawnIntermediateNode<UK2Node_IfThenElse>(this, SourceGraph);
CompareBlueprintToNullBranchNode->AllocateDefaultPins();
//hook up the condition
CompareBlueprintToNullResultPin->MakeLinkTo( CompareBlueprintToNullBranchNode->GetConditionPin() );
//hook event to the branck input
EventThenPin->MakeLinkTo( CompareBlueprintToNullBranchNode->GetExecPin() );
//cache ot the THEN pin for later linkup
CompareBlueprintToNullBranchThenPin = CompareBlueprintToNullBranchNode->GetThenPin();
}
//
// Get Class Default Object
//
UK2Node_CallFunction *GetClassDefaultObjectNode = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(this,SourceGraph);
GetClassDefaultObjectNode->FunctionReference.SetExternalMember( TEXT("GetBlueprintClassDefaultObject"), ULiveEditorKismetLibrary::StaticClass() );
GetClassDefaultObjectNode->AllocateDefaultPins();
UEdGraphPin *GetClassDefaultObjectBlueprintPin = GetClassDefaultObjectNode->FindPinChecked( TEXT("Blueprint") );
CompilerContext.CopyPinLinksToIntermediate( *SourceBlueprintPin, *GetClassDefaultObjectBlueprintPin);
//hook for later -> the pointer to the ClassDefaultObject of our BlueprintPin
UEdGraphPin *GetClassDefaultObjectResultPin = GetClassDefaultObjectNode->GetReturnValuePin();
//
// Compare to BaseClass to make sure that the target Blueprint IsA(BaseClass)
//
UEdGraphPin *ClassIsChildOfBranchThenPin = NULL;
{
//
//we need to get the class of the Blueprint pin
UK2Node_CallFunction *GetClassNode = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(this,SourceGraph);
GetClassNode->FunctionReference.SetExternalMember( TEXT("GetObjectClass"), UGameplayStatics::StaticClass() );
GetClassNode->AllocateDefaultPins();
//Pin in the GetClassDefaultObjectResultPin to the Object Parameter of the GetObjectClass FUNCTION
//we want to make sure that the Class of the DEFAULT_OBJECT IsA( BaseClass )
UEdGraphPin *GetClassObjectPin = GetClassNode->FindPinChecked( FString(TEXT("Object")) );
GetClassDefaultObjectResultPin->MakeLinkTo( GetClassObjectPin );
//hook for the Class result
UEdGraphPin *GetClassReturnValuePin = GetClassNode->GetReturnValuePin();
//
//the ClassIsChildOf FUNCTION
UK2Node_CallFunction *ClassIsChildOfNode = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(this,SourceGraph);
ClassIsChildOfNode->FunctionReference.SetExternalMember( TEXT("ClassIsChildOf"), UKismetMathLibrary::StaticClass() );
ClassIsChildOfNode->AllocateDefaultPins();
//hook up the test pin
UEdGraphPin *ClassIsChildOfTestPin = ClassIsChildOfNode->FindPinChecked( FString(TEXT("TestClass")) );
GetClassReturnValuePin->MakeLinkTo( ClassIsChildOfTestPin );
//copy our BaseClass Pin into the ClassIsChildOf Parameter
UEdGraphPin *ClassIsChildOfParentPin = ClassIsChildOfNode->FindPinChecked( FString(TEXT("ParentClass")) );
CompilerContext.CopyPinLinksToIntermediate( *SourceBaseClassPin, *ClassIsChildOfParentPin);
//hook for return value
UEdGraphPin *ClassIsChildOfResultPin = ClassIsChildOfNode->GetReturnValuePin();
//
// Create the BRANCH that will drive the comparison
UK2Node_IfThenElse* ClassIsChildOfBranchNode = CompilerContext.SpawnIntermediateNode<UK2Node_IfThenElse>(this, SourceGraph);
ClassIsChildOfBranchNode->AllocateDefaultPins();
//hook up the previous branch to this one
check( CompareBlueprintToNullBranchThenPin != NULL );
CompareBlueprintToNullBranchThenPin->MakeLinkTo( ClassIsChildOfBranchNode->GetExecPin() );
//hook up our condition
ClassIsChildOfResultPin->MakeLinkTo( ClassIsChildOfBranchNode->GetConditionPin() );
//cache ot the THEN pin for later linkup
ClassIsChildOfBranchThenPin = ClassIsChildOfBranchNode->GetThenPin();
}
//
//The set variable function (to set LiveEdited new value)
//
UK2Node_CallFunction *ModifyVarNode = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(this,SourceGraph);
ModifyVarNode->FunctionReference.SetExternalMember( TEXT("ModifyPropertyByName"), ULiveEditorKismetLibrary::StaticClass() );
ModifyVarNode->AllocateDefaultPins();
// Make link from the event to the Set variable node
UEdGraphPin *ModifyVarExecPin = ModifyVarNode->GetExecPin();
ClassIsChildOfBranchThenPin->MakeLinkTo( ModifyVarExecPin );
//link up the Target Pin
UEdGraphPin *ModifyVarNodeTargetPin = ModifyVarNode->FindPinChecked( TEXT("Target") );
GetClassDefaultObjectResultPin->MakeLinkTo( ModifyVarNodeTargetPin );
//link up the PropertyName Pin
UEdGraphPin *ModifyVarNodePropertyNamePin = ModifyVarNode->FindPinChecked( TEXT("PropertyName") );
ModifyVarNodePropertyNamePin->DefaultValue = SourceVariablePin->DefaultValue;
//link up the MIDI Value Pin
UEdGraphPin *ModifyVarNodeMidiValuePin = ModifyVarNode->FindPinChecked( TEXT("MidiValue") );
EventMidiValuePin->MakeLinkTo(ModifyVarNodeMidiValuePin);
//link up the ControlType Pin
UEdGraphPin *ModifyVarNodeControlTypePin = ModifyVarNode->FindPinChecked( TEXT("ControlType") );
EventControlTypePin->MakeLinkTo(ModifyVarNodeControlTypePin);
//hook for the Delta Pin
UEdGraphPin *ModifyVarNodeDeltaPin = ModifyVarNode->FindPinChecked( TEXT("Delta") );
//Clamping
if ( ShouldClampPin->DefaultValue == FString(TEXT("true")) )
{
UEdGraphPin *ModifyVarNodeShouldClampPin = ModifyVarNode->FindPinChecked( TEXT("bShouldClamp") );
CompilerContext.CopyPinLinksToIntermediate( *ShouldClampPin, *ModifyVarNodeShouldClampPin);
check( ClampMinPin != NULL );
UEdGraphPin *ModifyVarNodeClampMinPin = ModifyVarNode->FindPinChecked( TEXT("ClampMin") );
CompilerContext.CopyPinLinksToIntermediate( *ClampMinPin, *ModifyVarNodeClampMinPin);
check( ClampMaxPin != NULL );
UEdGraphPin *ModifyVarNodeClampMaxPin = ModifyVarNode->FindPinChecked( TEXT("ClampMax") );
CompilerContext.CopyPinLinksToIntermediate( *ClampMaxPin, *ModifyVarNodeClampMaxPin);
}
//hook for ModifyVar THEN
UEdGraphPin *ModifyVarNodeThenPin = ModifyVarNode->GetThenPin();
//
// The Multiply Delta * DeltaMult function
//
UK2Node_CallFunction *MultiplyNode = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(this,SourceGraph);
MultiplyNode->FunctionReference.SetExternalMember( TEXT("Multiply_FloatFloat"), UKismetMathLibrary::StaticClass() );
MultiplyNode->AllocateDefaultPins();
//cache this out. it will be linked to from the output of the (int)Delta -> (float)Delta Conversion function
UEdGraphPin *MultiplyNodeFirstPin = MultiplyNode->FindPinChecked( FString(TEXT("A")) );
// 2nd input to the Add function comes from the Current variable value
UEdGraphPin *MultiplyNodeSecondPin = MultiplyNode->FindPinChecked( FString(TEXT("B")) );
CompilerContext.CopyPinLinksToIntermediate( *DeltaMultPin, *MultiplyNodeSecondPin);
UEdGraphPin *MultiplyNodeReturnValuePin = MultiplyNode->GetReturnValuePin();
MultiplyNodeReturnValuePin->MakeLinkTo( ModifyVarNodeDeltaPin );
//
// The Convert function to go from (int)Delta to ULiveEditorKismetLibrary::ModifyPropertyByName(... float Delta ...)
//
FName ConvertFunctionName;
bool success = Schema->SearchForAutocastFunction( EventDeltaPin, MultiplyNodeFirstPin, ConvertFunctionName );
check( success );
UK2Node_CallFunction *ConvertDeltaNode = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(this,SourceGraph);
ConvertDeltaNode->FunctionReference.SetExternalMember( ConvertFunctionName, UKismetMathLibrary::StaticClass() );
ConvertDeltaNode->AllocateDefaultPins();
FName PinName;
success = UK2Node_LiveEditObjectStatics::SearchForConvertPinName( Schema, EventDeltaPin, PinName );
check( success );
UEdGraphPin *ConvertDeltaInputPin = ConvertDeltaNode->FindPinChecked( PinName.ToString() );
EventDeltaPin->MakeLinkTo( ConvertDeltaInputPin );
UEdGraphPin *ConvertDeltaOutputPin = ConvertDeltaNode->GetReturnValuePin();
ConvertDeltaOutputPin->MakeLinkTo( MultiplyNodeFirstPin );
//
// TODO - markDirty
//
//
// send out the object value updates
//
UK2Node_CallFunction *ReplicationNode = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(this,SourceGraph);
ReplicationNode->FunctionReference.SetExternalMember( TEXT("ReplicateChangesToChildren"), ULiveEditorKismetLibrary::StaticClass() );
ReplicationNode->AllocateDefaultPins();
UEdGraphPin *ReplicationNodeVarNamePin = ReplicationNode->FindPinChecked( TEXT("PropertyName") );
ReplicationNodeVarNamePin->DefaultValue = SourceVariablePin->DefaultValue;
UEdGraphPin *ReplicationNodeArchetypePin = ReplicationNode->FindPinChecked( FString(TEXT("Archetype")) );
GetClassDefaultObjectResultPin->MakeLinkTo( ReplicationNodeArchetypePin );
UEdGraphPin *ReplicationNodeExecPin = ReplicationNode->GetExecPin();
ModifyVarNodeThenPin->MakeLinkTo( ReplicationNodeExecPin );
UEdGraphPin *ReplicationNodeThenPin = ReplicationNode->FindPinChecked( FString(TEXT("then")) );
//
// Finally, activate our OnMidiInput pin
//
CompilerContext.CopyPinLinksToIntermediate( *SourceOnMidiInputPin, *ReplicationNodeThenPin);
}
// Break any links to the expanded node
BreakAllNodeLinks();
}
void UK2Node_GetEnumeratorName::ExpandNode(class FKismetCompilerContext& CompilerContext, UEdGraph* SourceGraph)
{
Super::ExpandNode(CompilerContext, SourceGraph);
UEnum* Enum = GetEnum();
if(NULL == Enum)
{
CompilerContext.MessageLog.Error(*FString::Printf(*NSLOCTEXT("K2Node", "GetEnumeratorNam_Error_MustHaveValidName", "@@ must have a valid enum defined").ToString()), this);
return;
}
const UEdGraphSchema_K2* Schema = CompilerContext.GetSchema();
const UFunction* Function = UKismetNodeHelperLibrary::StaticClass()->FindFunctionByName( GetFunctionName() );
check(NULL != Function);
UK2Node_CallFunction* CallGetName = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(this, SourceGraph);
CallGetName->SetFromFunction(Function);
CallGetName->AllocateDefaultPins();
check(CallGetName->IsNodePure());
//OPUTPUT PIN
UEdGraphPin* OrgReturnPin = FindPinChecked(Schema->PN_ReturnValue);
UEdGraphPin* NewReturnPin = CallGetName->GetReturnValuePin();
check(NULL != NewReturnPin);
CompilerContext.MovePinLinksToIntermediate(*OrgReturnPin, *NewReturnPin);
//ENUM PIN
UEdGraphPin* EnumPin = CallGetName->FindPinChecked(TEXT("Enum"));
Schema->TrySetDefaultObject(*EnumPin, Enum);
check(EnumPin->DefaultObject == Enum);
//VALUE PIN
UEdGraphPin* OrgInputPin = FindPinChecked(EnumeratorPinName);
UEdGraphPin* IndexPin = CallGetName->FindPinChecked(TEXT("EnumeratorValue"));
check(EGPD_Input == IndexPin->Direction && Schema->PC_Byte == IndexPin->PinType.PinCategory);
CompilerContext.MovePinLinksToIntermediate(*OrgInputPin, *IndexPin);
if (!IndexPin->LinkedTo.Num())
{
//MAKE LITERAL BYTE FROM LITERAL ENUM
const FString EnumLiteral = IndexPin->GetDefaultAsString();
const int32 NumericValue = Enum->GetValueByName(*EnumLiteral);
if (NumericValue == INDEX_NONE)
{
CompilerContext.MessageLog.Error(*FString::Printf(*NSLOCTEXT("K2Node", "GetEnumeratorNam_Error_InvalidName", "@@ has invalid enum value '%s'").ToString(), *EnumLiteral), this);
return;
}
const FString DefaultByteValue = FString::FromInt(NumericValue);
// LITERAL BYTE FUNCTION
const FName FunctionName = GET_FUNCTION_NAME_CHECKED(UKismetSystemLibrary, MakeLiteralByte);
UK2Node_CallFunction* MakeLiteralByte = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(this, SourceGraph);
MakeLiteralByte->SetFromFunction(UKismetSystemLibrary::StaticClass()->FindFunctionByName(FunctionName));
MakeLiteralByte->AllocateDefaultPins();
UEdGraphPin* MakeLiteralByteReturnPin = MakeLiteralByte->FindPinChecked(Schema->PN_ReturnValue);
Schema->TryCreateConnection(MakeLiteralByteReturnPin, IndexPin);
UEdGraphPin* MakeLiteralByteInputPin = MakeLiteralByte->FindPinChecked(TEXT("Value"));
MakeLiteralByteInputPin->DefaultValue = DefaultByteValue;
}
BreakAllNodeLinks();
}
void UK2Node_CallFunctionOnMember::ExpandNode(class FKismetCompilerContext& CompilerContext, UEdGraph* SourceGraph)
{
// This skips UK2Node_CallFunction::ExpandNode. Instead it spawns a new CallFunction node and does hookup that this is interested in,
// and then that CallFunction node will get its own Expansion to handle the parent portions
UK2Node::ExpandNode(CompilerContext, SourceGraph);
if (CompilerContext.bIsFullCompile)
{
const UEdGraphSchema_K2* Schema = CompilerContext.GetSchema();
UFunction* Function = GetTargetFunction();
// Create real 'call function' node.
UK2Node_CallFunction* CallFuncNode = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(this, SourceGraph);
CallFuncNode->SetFromFunction(Function);
CallFuncNode->AllocateDefaultPins();
UEdGraphPin* CallFuncSelfPin = Schema->FindSelfPin(*CallFuncNode, EGPD_Input);
// Now because you can wire multiple variables to a self pin, need to iterate over each one and create a 'get var' node for each
UEdGraphPin* SelfPin = Schema->FindSelfPin(*this, EGPD_Input);
if(SelfPin != NULL)
{
if (SelfPin->LinkedTo.Num() == 0)
{
UK2Node_VariableGet* GetVarNode = CompilerContext.SpawnIntermediateNode<UK2Node_VariableGet>(this, SourceGraph);
GetVarNode->VariableReference.SetSelfMember(MemberVariableToCallOn.GetMemberName());
GetVarNode->AllocateDefaultPins();
if (UEdGraphPin* ValuePin = GetVarNode->GetValuePin())
{
ValuePin->MakeLinkTo(CallFuncSelfPin);
}
}
else
{
for (int32 TargetIdx = 0; TargetIdx < SelfPin->LinkedTo.Num(); TargetIdx++)
{
UEdGraphPin* SourcePin = SelfPin->LinkedTo[TargetIdx];
if (SourcePin != NULL)
{
// Create 'get var' node to get the member
UK2Node_VariableGet* GetVarNode = CompilerContext.SpawnIntermediateNode<UK2Node_VariableGet>(this, SourceGraph);
GetVarNode->VariableReference = MemberVariableToCallOn;
GetVarNode->AllocateDefaultPins();
UEdGraphPin* VarNodeSelfPin = Schema->FindSelfPin(*GetVarNode, EGPD_Input);
if (VarNodeSelfPin != NULL)
{
VarNodeSelfPin->MakeLinkTo(SourcePin);
UEdGraphPin* ValuePin = GetVarNode->GetValuePin();
ValuePin->MakeLinkTo(CallFuncSelfPin);
}
else
{
// Failed to find the member to call on for this expansion, so warn about it
CompilerContext.MessageLog.Warning(*LOCTEXT("CallFunctionOnInvalidMember_Warning", "Function node @@ called on invalid target member.").ToString(), this);
}
}
}
}
}
// Now move the rest of the connections (including exec connections...)
for(int32 SrcPinIdx=0; SrcPinIdx<Pins.Num(); SrcPinIdx++)
{
UEdGraphPin* SrcPin = Pins[SrcPinIdx];
if(SrcPin != NULL && SrcPin != SelfPin) // check its not the self pin
{
UEdGraphPin* DestPin = CallFuncNode->FindPin(SrcPin->PinName);
if(DestPin != NULL)
{
CompilerContext.MovePinLinksToIntermediate(*SrcPin, *DestPin); // Source node is assumed to be owner...
}
}
}
// Finally, break any remaining links on the 'call func on member' node
BreakAllNodeLinks();
}
}
FBlueprintCompiledStatement* FKCHandler_MathExpression::GenerateFunctionRPN(UEdGraphNode* CurrentNode, FKismetFunctionContext& Context, UK2Node_MathExpression& MENode, FBPTerminal* ResultTerm, TMap<UEdGraphPin*, UEdGraphPin*>& InnerToOuterInput)
{
UK2Node_CallFunction* CallFunctionNode = Cast<UK2Node_CallFunction>(CurrentNode);
UFunction* Function = CallFunctionNode ? CallFunctionNode->GetTargetFunction() : nullptr;
if (!CanBeCalledByMathExpression(Function))
{
CompilerContext.MessageLog.Error(*FString::Printf(*LOCTEXT("WrongFunction_Error", "Function '%s' cannot be called inside Math Expression @@ - @@").ToString(), *GetNameSafe(Function)), CallFunctionNode, &MENode);
return nullptr;
}
FBlueprintCompiledStatement* NewDetachedStatement = new FBlueprintCompiledStatement();
FBlueprintCompiledStatement& Statement = *NewDetachedStatement;
Statement.FunctionToCall = Function;
Statement.FunctionContext = nullptr;
Statement.Type = KCST_CallFunction;
Statement.LHS = ResultTerm; // required only for the first node
check(CallFunctionNode);
TArray<FBPTerminal*> RHSTerms;
for (TFieldIterator<UProperty> It(Function); It && (It->PropertyFlags & CPF_Parm); ++It)
{
UProperty* Property = *It;
if (Property && !Property->HasAnyPropertyFlags(CPF_ReturnParm | CPF_OutParm))
{
UEdGraphPin* PinToTry = nullptr;
{
UEdGraphPin* PinMatch = CallFunctionNode->FindPin(Property->GetName());
const bool bGoodPin = PinMatch && FKismetCompilerUtilities::IsTypeCompatibleWithProperty(PinMatch, Property, CompilerContext.MessageLog, CompilerContext.GetSchema(), Context.NewClass);
PinToTry = bGoodPin ? FEdGraphUtilities::GetNetFromPin(PinMatch) : nullptr;
}
FBPTerminal* RHSTerm = nullptr;
{
UEdGraphPin** OuterInputPtr = PinToTry ? InnerToOuterInput.Find(PinToTry) : nullptr;
UEdGraphPin* OuterInputNet = (OuterInputPtr && *OuterInputPtr) ? FEdGraphUtilities::GetNetFromPin(*OuterInputPtr) : nullptr;
FBPTerminal** OuterTerm = OuterInputNet ? Context.NetMap.Find(OuterInputNet) : nullptr;
// Input is an outer term
if (OuterTerm && *OuterTerm)
{
RHSTerm = *OuterTerm;
}
}
if (!RHSTerm)
{
FBPTerminal** Term = PinToTry ? Context.NetMap.Find(PinToTry) : nullptr;
const bool bValidTerm = Term && *Term;
// Input is a literal term
// Input is a variable
if (bValidTerm && ((*Term)->bIsLiteral || (*Term)->AssociatedVarProperty))
{
RHSTerm = *Term;
}
// Input is an InlineGeneratedParameter
else if (bValidTerm)
{
ensure(!(*Term)->InlineGeneratedParameter);
UEdGraphNode* SourceNode = PinToTry ? PinToTry->GetOwningNodeUnchecked() : nullptr;
FBlueprintCompiledStatement* InlineGeneratedParameterStatement = GenerateFunctionRPN(SourceNode, Context, MENode, nullptr, InnerToOuterInput);
if (InlineGeneratedParameterStatement)
{
Context.AllGeneratedStatements.Add(InlineGeneratedParameterStatement);
RHSTerm = *Term;
RHSTerm->InlineGeneratedParameter = InlineGeneratedParameterStatement;
}
}
}
if (RHSTerm)
{
RHSTerms.Add(RHSTerm);
}
else
{
CompilerContext.MessageLog.Error(*FString::Printf(*LOCTEXT("FindPinParameter_Error", "Could not find a pin for the parameter %s of %s on @@").ToString(), *GetNameSafe(Property), *GetNameSafe(Function)), CallFunctionNode);
}
}
}
Statement.RHS = RHSTerms;
return &Statement;
}
void UK2Node_SpawnActorFromClass::ExpandNode(class FKismetCompilerContext& CompilerContext, UEdGraph* SourceGraph)
{
Super::ExpandNode(CompilerContext, SourceGraph);
static FName BeginSpawningBlueprintFuncName = GET_FUNCTION_NAME_CHECKED(UGameplayStatics, BeginSpawningActorFromClass);
static FString ActorClassParamName = FString(TEXT("ActorClass"));
static FString WorldContextParamName = FString(TEXT("WorldContextObject"));
static FName FinishSpawningFuncName = GET_FUNCTION_NAME_CHECKED(UGameplayStatics, FinishSpawningActor);
static FString ActorParamName = FString(TEXT("Actor"));
static FString TransformParamName = FString(TEXT("SpawnTransform"));
static FString NoCollisionFailParamName = FString(TEXT("bNoCollisionFail"));
static FString OwnerParamName = FString(TEXT("Owner"));
static FString ObjectParamName = FString(TEXT("Object"));
static FString ValueParamName = FString(TEXT("Value"));
static FString PropertyNameParamName = FString(TEXT("PropertyName"));
UK2Node_SpawnActorFromClass* SpawnNode = this;
UEdGraphPin* SpawnNodeExec = SpawnNode->GetExecPin();
UEdGraphPin* SpawnNodeTransform = SpawnNode->GetSpawnTransformPin();
UEdGraphPin* SpawnNodeNoCollisionFail = GetNoCollisionFailPin();
UEdGraphPin* SpawnWorldContextPin = SpawnNode->GetWorldContextPin();
UEdGraphPin* SpawnClassPin = SpawnNode->GetClassPin();
UEdGraphPin* SpawnNodeOwnerPin = SpawnNode->GetOwnerPin();
UEdGraphPin* SpawnNodeThen = SpawnNode->GetThenPin();
UEdGraphPin* SpawnNodeResult = SpawnNode->GetResultPin();
UClass* SpawnClass = (SpawnClassPin != NULL) ? Cast<UClass>(SpawnClassPin->DefaultObject) : NULL;
if((0 == SpawnClassPin->LinkedTo.Num()) && (NULL == SpawnClass))
{
CompilerContext.MessageLog.Error(*LOCTEXT("SpawnActorNodeMissingClass_Error", "Spawn node @@ must have a class specified.").ToString(), SpawnNode);
// we break exec links so this is the only error we get, don't want the SpawnActor node being considered and giving 'unexpected node' type warnings
SpawnNode->BreakAllNodeLinks();
return;
}
//////////////////////////////////////////////////////////////////////////
// create 'begin spawn' call node
UK2Node_CallFunction* CallBeginSpawnNode = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(SpawnNode, SourceGraph);
CallBeginSpawnNode->FunctionReference.SetExternalMember(BeginSpawningBlueprintFuncName, UGameplayStatics::StaticClass());
CallBeginSpawnNode->AllocateDefaultPins();
UEdGraphPin* CallBeginExec = CallBeginSpawnNode->GetExecPin();
UEdGraphPin* CallBeginWorldContextPin = CallBeginSpawnNode->FindPinChecked(WorldContextParamName);
UEdGraphPin* CallBeginActorClassPin = CallBeginSpawnNode->FindPinChecked(ActorClassParamName);
UEdGraphPin* CallBeginTransform = CallBeginSpawnNode->FindPinChecked(TransformParamName);
UEdGraphPin* CallBeginNoCollisionFail = CallBeginSpawnNode->FindPinChecked(NoCollisionFailParamName);
UEdGraphPin* CallBeginOwnerPin = CallBeginSpawnNode->FindPinChecked(FK2Node_SpawnActorFromClassHelper::OwnerPinName);
UEdGraphPin* CallBeginResult = CallBeginSpawnNode->GetReturnValuePin();
// Move 'exec' connection from spawn node to 'begin spawn'
CompilerContext.MovePinLinksToIntermediate(*SpawnNodeExec, *CallBeginExec);
if(SpawnClassPin->LinkedTo.Num() > 0)
{
// Copy the 'blueprint' connection from the spawn node to 'begin spawn'
CompilerContext.MovePinLinksToIntermediate(*SpawnClassPin, *CallBeginActorClassPin);
}
else
{
// Copy blueprint literal onto begin spawn call
CallBeginActorClassPin->DefaultObject = SpawnClass;
}
// Copy the world context connection from the spawn node to 'begin spawn' if necessary
if (SpawnWorldContextPin)
{
CompilerContext.MovePinLinksToIntermediate(*SpawnWorldContextPin, *CallBeginWorldContextPin);
}
if (SpawnNodeOwnerPin != nullptr)
{
CompilerContext.MovePinLinksToIntermediate(*SpawnNodeOwnerPin, *CallBeginOwnerPin);
}
// Copy the 'transform' connection from the spawn node to 'begin spawn'
CompilerContext.MovePinLinksToIntermediate(*SpawnNodeTransform, *CallBeginTransform);
// Copy the 'bNoCollisionFail' connection from the spawn node to 'begin spawn'
CompilerContext.MovePinLinksToIntermediate(*SpawnNodeNoCollisionFail, *CallBeginNoCollisionFail);
//////////////////////////////////////////////////////////////////////////
// create 'finish spawn' call node
UK2Node_CallFunction* CallFinishSpawnNode = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(SpawnNode, SourceGraph);
CallFinishSpawnNode->FunctionReference.SetExternalMember(FinishSpawningFuncName, UGameplayStatics::StaticClass());
CallFinishSpawnNode->AllocateDefaultPins();
UEdGraphPin* CallFinishExec = CallFinishSpawnNode->GetExecPin();
UEdGraphPin* CallFinishThen = CallFinishSpawnNode->GetThenPin();
UEdGraphPin* CallFinishActor = CallFinishSpawnNode->FindPinChecked(ActorParamName);
UEdGraphPin* CallFinishTransform = CallFinishSpawnNode->FindPinChecked(TransformParamName);
UEdGraphPin* CallFinishResult = CallFinishSpawnNode->GetReturnValuePin();
// Move 'then' connection from spawn node to 'finish spawn'
CompilerContext.MovePinLinksToIntermediate(*SpawnNodeThen, *CallFinishThen);
// Copy transform connection
CompilerContext.CopyPinLinksToIntermediate(*CallBeginTransform, *CallFinishTransform);
// Connect output actor from 'begin' to 'finish'
CallBeginResult->MakeLinkTo(CallFinishActor);
// Move result connection from spawn node to 'finish spawn'
CallFinishResult->PinType = SpawnNodeResult->PinType; // Copy type so it uses the right actor subclass
CompilerContext.MovePinLinksToIntermediate(*SpawnNodeResult, *CallFinishResult);
//////////////////////////////////////////////////////////////////////////
// create 'set var' nodes
// Get 'result' pin from 'begin spawn', this is the actual actor we want to set properties on
UEdGraphPin* LastThen = FKismetCompilerUtilities::GenerateAssignmentNodes(CompilerContext, SourceGraph, CallBeginSpawnNode, SpawnNode, CallBeginResult, GetClassToSpawn() );
// Make exec connection between 'then' on last node and 'finish'
LastThen->MakeLinkTo(CallFinishExec);
// Break any links to the expanded node
SpawnNode->BreakAllNodeLinks();
}
bool UK2Node_LatentAbilityCall::ConnectSpawnProperties(UClass* ClassToSpawn, const UEdGraphSchema_K2* Schema, class FKismetCompilerContext& CompilerContext, UEdGraph* SourceGraph, UEdGraphPin*& LastThenPin, UEdGraphPin* SpawnedActorReturnPin)
{
bool bIsErrorFree = true;
for (auto SpawnVarPin : SpawnParmPins)
{
const bool bHasDefaultValue = !SpawnVarPin->DefaultValue.IsEmpty() || !SpawnVarPin->DefaultTextValue.IsEmpty() || SpawnVarPin->DefaultObject;
if (SpawnVarPin->LinkedTo.Num() > 0 || bHasDefaultValue)
{
if (SpawnVarPin->LinkedTo.Num() == 0)
{
UProperty* Property = FindField<UProperty>(ClassToSpawn, *SpawnVarPin->PinName);
// NULL property indicates that this pin was part of the original node, not the
// class we're assigning to:
if (!Property)
{
continue;
}
if (ClassToSpawn->ClassDefaultObject != nullptr)
{
// We don't want to generate an assignment node unless the default value
// differs from the value in the CDO:
FString DefaultValueAsString;
FBlueprintEditorUtils::PropertyValueToString(Property, (uint8*)ClassToSpawn->ClassDefaultObject, DefaultValueAsString);
if (DefaultValueAsString == SpawnVarPin->DefaultValue)
{
continue;
}
}
}
UFunction* SetByNameFunction = Schema->FindSetVariableByNameFunction(SpawnVarPin->PinType);
if (SetByNameFunction)
{
UK2Node_CallFunction* SetVarNode = NULL;
if (SpawnVarPin->PinType.bIsArray)
{
SetVarNode = CompilerContext.SpawnIntermediateNode<UK2Node_CallArrayFunction>(this, SourceGraph);
}
else
{
SetVarNode = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(this, SourceGraph);
}
SetVarNode->SetFromFunction(SetByNameFunction);
SetVarNode->AllocateDefaultPins();
// Connect this node into the exec chain
bIsErrorFree &= Schema->TryCreateConnection(LastThenPin, SetVarNode->GetExecPin());
LastThenPin = SetVarNode->GetThenPin();
static FString ObjectParamName = FString(TEXT("Object"));
static FString ValueParamName = FString(TEXT("Value"));
static FString PropertyNameParamName = FString(TEXT("PropertyName"));
// Connect the new actor to the 'object' pin
UEdGraphPin* ObjectPin = SetVarNode->FindPinChecked(ObjectParamName);
SpawnedActorReturnPin->MakeLinkTo(ObjectPin);
// Fill in literal for 'property name' pin - name of pin is property name
UEdGraphPin* PropertyNamePin = SetVarNode->FindPinChecked(PropertyNameParamName);
PropertyNamePin->DefaultValue = SpawnVarPin->PinName;
UEdGraphPin* ValuePin = SetVarNode->FindPinChecked(ValueParamName);
if (SpawnVarPin->LinkedTo.Num() == 0 &&
SpawnVarPin->DefaultValue != FString() &&
SpawnVarPin->PinType.PinCategory == Schema->PC_Byte &&
SpawnVarPin->PinType.PinSubCategoryObject.IsValid() &&
SpawnVarPin->PinType.PinSubCategoryObject->IsA<UEnum>())
{
// Pin is an enum, we need to alias the enum value to an int:
UK2Node_EnumLiteral* EnumLiteralNode = CompilerContext.SpawnIntermediateNode<UK2Node_EnumLiteral>(this, SourceGraph);
EnumLiteralNode->Enum = CastChecked<UEnum>(SpawnVarPin->PinType.PinSubCategoryObject.Get());
EnumLiteralNode->AllocateDefaultPins();
EnumLiteralNode->FindPinChecked(Schema->PN_ReturnValue)->MakeLinkTo(ValuePin);
UEdGraphPin* InPin = EnumLiteralNode->FindPinChecked(UK2Node_EnumLiteral::GetEnumInputPinName());
InPin->DefaultValue = SpawnVarPin->DefaultValue;
}
else
{
// Move connection from the variable pin on the spawn node to the 'value' pin
CompilerContext.MovePinLinksToIntermediate(*SpawnVarPin, *ValuePin);
SetVarNode->PinConnectionListChanged(ValuePin);
}
}
}
}
return bIsErrorFree;
}
void UK2Node_FormatText::ExpandNode(class FKismetCompilerContext& CompilerContext, UEdGraph* SourceGraph)
{
Super::ExpandNode(CompilerContext, SourceGraph);
/**
At the end of this, the UK2Node_FormatText will not be a part of the Blueprint, it merely handles connecting
the other nodes into the Blueprint.
*/
const UEdGraphSchema_K2* Schema = CompilerContext.GetSchema();
// Create a "Make Array" node to compile the list of arguments into an array for the Format function being called
UK2Node_MakeArray* MakeArrayNode = CompilerContext.SpawnIntermediateNode<UK2Node_MakeArray>(this, SourceGraph); //SourceGraph->CreateBlankNode<UK2Node_MakeArray>();
MakeArrayNode->AllocateDefaultPins();
CompilerContext.MessageLog.NotifyIntermediateObjectCreation(MakeArrayNode, this);
UEdGraphPin* ArrayOut = MakeArrayNode->GetOutputPin();
// This is the node that does all the Format work.
UK2Node_CallFunction* CallFunction = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(this, SourceGraph);
CallFunction->SetFromFunction(UKismetTextLibrary::StaticClass()->FindFunctionByName(GET_MEMBER_NAME_CHECKED(UKismetTextLibrary, Format)));
CallFunction->AllocateDefaultPins();
CompilerContext.MessageLog.NotifyIntermediateObjectCreation(CallFunction, this);
// Connect the output of the "Make Array" pin to the function's "InArgs" pin
ArrayOut->MakeLinkTo(CallFunction->FindPin(TEXT("InArgs")));
// This will set the "Make Array" node's type, only works if one pin is connected.
MakeArrayNode->PinConnectionListChanged(ArrayOut);
// For each argument, we will need to add in a "Make Struct" node.
for(int32 ArgIdx = 0; ArgIdx < PinNames.Num(); ++ArgIdx)
{
UEdGraphPin* ArgumentPin = FindArgumentPin(PinNames[ArgIdx]);
// Spawn a "Make Struct" node to create the struct needed for formatting the text.
UK2Node_MakeStruct* PinMakeStruct = CompilerContext.SpawnIntermediateNode<UK2Node_MakeStruct>(this, SourceGraph);
PinMakeStruct->StructType = FFormatTextArgument::StaticStruct();
PinMakeStruct->AllocateDefaultPins();
// Set the struct's "ArgumentName" pin literal to be the argument pin's name.
PinMakeStruct->GetSchema()->TrySetDefaultText(*PinMakeStruct->FindPin("ArgumentName"), FText::AsCultureInvariant(ArgumentPin->PinName));
// Move the connection of the argument pin to the struct's "TextValue" pin, this will move the literal value if present.
CompilerContext.MovePinLinksToIntermediate(*ArgumentPin, *PinMakeStruct->FindPin("TextValue"));
// The "Make Array" node already has one pin available, so don't create one for ArgIdx == 0
if(ArgIdx > 0)
{
MakeArrayNode->AddInputPin();
}
// Find the input pin on the "Make Array" node by index.
FString PinName = FString::Printf(TEXT("[%d]"), ArgIdx);
UEdGraphPin* InputPin = MakeArrayNode->FindPin(PinName);
// Find the output for the pin's "Make Struct" node and link it to the corresponding pin on the "Make Array" node.
FindOutputStructPinChecked(PinMakeStruct)->MakeLinkTo(InputPin);
}
// Move connection of FormatText's "Result" pin to the call function's return value pin.
CompilerContext.MovePinLinksToIntermediate(*FindPin(TEXT("Result")), *CallFunction->GetReturnValuePin());
// Move connection of FormatText's "Format" pin to the call function's "InPattern" pin
CompilerContext.MovePinLinksToIntermediate(*GetFormatPin(), *CallFunction->FindPin(TEXT("InPattern")));
BreakAllNodeLinks();
}
/**
* This is essentially a mix of K2Node_BaseAsyncTask::ExpandNode and K2Node_SpawnActorFromClass::ExpandNode.
* Several things are going on here:
* -Factory call to create proxy object (K2Node_BaseAsyncTask)
* -Task return delegates are created and hooked up (K2Node_BaseAsyncTask)
* -A BeginSpawn function is called on proxyu object (similiar to K2Node_SpawnActorFromClass)
* -BeginSpawn can choose to spawn or not spawn an actor (and return it)
* -If spawned:
* -SetVars are run on the newly spawned object (set expose on spawn variables - K2Node_SpawnActorFromClass)
* -FinishSpawn is called on the proxy object
*
*
* Also, a K2Node_SpawnActorFromClass could not be used directly here, since we want the proxy object to implement its own
* BeginSpawn/FinishSpawn function (custom game logic will often be performed in the native implementation). K2Node_SpawnActorFromClass also
* requires a SpawnTransform be wired into it, and in most ability task cases, the spawn transform is implied or not necessary.
*
*
*/
void UK2Node_LatentAbilityCall::ExpandNode(class FKismetCompilerContext& CompilerContext, UEdGraph* SourceGraph)
{
bool validatedActorSpawn = ValidateActorSpawning(CompilerContext, false);
bool validatedActorArraySpawn = ValidateActorArraySpawning(CompilerContext, false);
UEdGraphPin* ClassPin = GetClassPin();
if (ClassPin == nullptr)
{
// Nothing special about this task, just call super
Super::ExpandNode(CompilerContext, SourceGraph);
return;
}
UK2Node::ExpandNode(CompilerContext, SourceGraph);
if (!validatedActorSpawn && !validatedActorArraySpawn)
{
ValidateActorSpawning(CompilerContext, true);
ValidateActorArraySpawning(CompilerContext, true);
}
const UEdGraphSchema_K2* Schema = CompilerContext.GetSchema();
check(SourceGraph && Schema);
bool bIsErrorFree = true;
// ------------------------------------------------------------------------------------------
// CREATE A CALL TO FACTORY THE PROXY OBJECT
// ------------------------------------------------------------------------------------------
UK2Node_CallFunction* const CallCreateProxyObjectNode = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(this, SourceGraph);
CallCreateProxyObjectNode->FunctionReference.SetExternalMember(ProxyFactoryFunctionName, ProxyFactoryClass);
CallCreateProxyObjectNode->AllocateDefaultPins();
bIsErrorFree &= CompilerContext.MovePinLinksToIntermediate(*FindPinChecked(Schema->PN_Execute), *CallCreateProxyObjectNode->FindPinChecked(Schema->PN_Execute)).CanSafeConnect();
for (auto CurrentPin : Pins)
{
if (FBaseAsyncTaskHelper::ValidDataPin(CurrentPin, EGPD_Input, Schema))
{
UEdGraphPin* DestPin = CallCreateProxyObjectNode->FindPin(CurrentPin->PinName); // match function inputs, to pass data to function from CallFunction node
// NEW: if no DestPin, assume it is a Class Spawn PRoperty - not an error
if (DestPin)
{
bIsErrorFree &= CompilerContext.CopyPinLinksToIntermediate(*CurrentPin, *DestPin).CanSafeConnect();
}
}
}
// ------------------------------------------------------------------------------------------
// GATHER OUTPUT PARAMETERS AND PAIR THEM WITH LOCAL VARIABLES
// ------------------------------------------------------------------------------------------
TArray<FBaseAsyncTaskHelper::FOutputPinAndLocalVariable> VariableOutputs;
for (auto CurrentPin : Pins)
{
if (FBaseAsyncTaskHelper::ValidDataPin(CurrentPin, EGPD_Output, Schema))
{
const FEdGraphPinType& PinType = CurrentPin->PinType;
UK2Node_TemporaryVariable* TempVarOutput = CompilerContext.SpawnInternalVariable(
this, PinType.PinCategory, PinType.PinSubCategory, PinType.PinSubCategoryObject.Get(), PinType.bIsArray);
bIsErrorFree &= TempVarOutput->GetVariablePin() && CompilerContext.MovePinLinksToIntermediate(*CurrentPin, *TempVarOutput->GetVariablePin()).CanSafeConnect();
VariableOutputs.Add(FBaseAsyncTaskHelper::FOutputPinAndLocalVariable(CurrentPin, TempVarOutput));
}
}
// ------------------------------------------------------------------------------------------
// FOR EACH DELEGATE DEFINE EVENT, CONNECT IT TO DELEGATE AND IMPLEMENT A CHAIN OF ASSIGMENTS
// ------------------------------------------------------------------------------------------
UEdGraphPin* LastThenPin = CallCreateProxyObjectNode->FindPinChecked(Schema->PN_Then);
UEdGraphPin* const ProxyObjectPin = CallCreateProxyObjectNode->GetReturnValuePin();
for (TFieldIterator<UMulticastDelegateProperty> PropertyIt(ProxyClass, EFieldIteratorFlags::ExcludeSuper); PropertyIt && bIsErrorFree; ++PropertyIt)
{
bIsErrorFree &= FBaseAsyncTaskHelper::HandleDelegateImplementation(*PropertyIt, VariableOutputs, ProxyObjectPin, LastThenPin, this, SourceGraph, CompilerContext);
}
if (CallCreateProxyObjectNode->FindPinChecked(Schema->PN_Then) == LastThenPin)
{
CompilerContext.MessageLog.Error(*LOCTEXT("MissingDelegateProperties", "BaseAsyncTask: Proxy has no delegates defined. @@").ToString(), this);
return;
}
// ------------------------------------------------------------------------------------------
// NEW: CREATE A CALL TO THE PRESPAWN FUNCTION, IF IT RETURNS TRUE, THEN WE WILL SPAWN THE NEW ACTOR
// ------------------------------------------------------------------------------------------
FName ProxyPrespawnFunctionName = validatedActorArraySpawn ? *FK2Node_LatentAbilityCallHelper::BeginSpawnArrayFuncName : *FK2Node_LatentAbilityCallHelper::BeginSpawnFuncName;
UFunction* PreSpawnFunction = ProxyFactoryClass->FindFunctionByName(ProxyPrespawnFunctionName);
FName ProxyPostpawnFunctionName = validatedActorArraySpawn ? *FK2Node_LatentAbilityCallHelper::FinishSpawnArrayFuncName : *FK2Node_LatentAbilityCallHelper::FinishSpawnFuncName;
UFunction* PostSpawnFunction = ProxyFactoryClass->FindFunctionByName(ProxyPostpawnFunctionName);
if (PreSpawnFunction == nullptr)
{
if (validatedActorArraySpawn)
{
CompilerContext.MessageLog.Error(*LOCTEXT("MissingBeginSpawningActorArrayFunction", "AbilityTask: Proxy is missing BeginSpawningActorArray native function. @@").ToString(), this);
}
else
{
CompilerContext.MessageLog.Error(*LOCTEXT("MissingBeginSpawningActorFunction", "AbilityTask: Proxy is missing BeginSpawningActor native function. @@").ToString(), this);
}
return;
}
if (PostSpawnFunction == nullptr)
{
if (validatedActorArraySpawn)
{
CompilerContext.MessageLog.Error(*LOCTEXT("MissingFinishSpawningActorArrayFunction", "AbilityTask: Proxy is missing FinishSpawningActorArray native function. @@").ToString(), this);
}
else
{
CompilerContext.MessageLog.Error(*LOCTEXT("MissingFinishSpawningActorFunction", "AbilityTask: Proxy is missing FinishSpawningActor native function. @@").ToString(), this);
}
return;
}
UK2Node_CallFunction* const CallPrespawnProxyObjectNode = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(this, SourceGraph);
CallPrespawnProxyObjectNode->FunctionReference.SetExternalMember(ProxyPrespawnFunctionName, ProxyClass);
CallPrespawnProxyObjectNode->AllocateDefaultPins();
// Hook up the self connection
UEdGraphPin* PrespawnCallSelfPin = Schema->FindSelfPin(*CallPrespawnProxyObjectNode, EGPD_Input);
check(PrespawnCallSelfPin);
bIsErrorFree &= Schema->TryCreateConnection(ProxyObjectPin, PrespawnCallSelfPin);
// Hook up input parameters to PreSpawn
for (auto CurrentPin : Pins)
{
if (FBaseAsyncTaskHelper::ValidDataPin(CurrentPin, EGPD_Input, Schema))
{
UEdGraphPin* DestPin = CallPrespawnProxyObjectNode->FindPin(CurrentPin->PinName);
if (DestPin)
{
bIsErrorFree &= CompilerContext.CopyPinLinksToIntermediate(*CurrentPin, *DestPin).CanSafeConnect();
}
}
}
// Hook the activate node up in the exec chain
UEdGraphPin* PrespawnExecPin = CallPrespawnProxyObjectNode->FindPinChecked(Schema->PN_Execute);
UEdGraphPin* PrespawnThenPin = CallPrespawnProxyObjectNode->FindPinChecked(Schema->PN_Then);
UEdGraphPin* PrespawnReturnPin = CallPrespawnProxyObjectNode->FindPinChecked(Schema->PN_ReturnValue);
UEdGraphPin* SpawnedActorReturnPin = CallPrespawnProxyObjectNode->FindPinChecked(FK2Node_LatentAbilityCallHelper::SpawnedActorPinName);
bIsErrorFree &= Schema->TryCreateConnection(LastThenPin, PrespawnExecPin);
LastThenPin = PrespawnThenPin;
// -------------------------------------------
// Branch based on return value of Prespawn
// -------------------------------------------
UK2Node_IfThenElse* BranchNode = SourceGraph->CreateBlankNode<UK2Node_IfThenElse>();
BranchNode->AllocateDefaultPins();
CompilerContext.MessageLog.NotifyIntermediateObjectCreation(BranchNode, this);
// Link return value of prespawn with the branch condtional
bIsErrorFree &= Schema->TryCreateConnection(PrespawnReturnPin, BranchNode->GetConditionPin());
// Link our Prespawn call to the branch node
bIsErrorFree &= Schema->TryCreateConnection(LastThenPin, BranchNode->GetExecPin());
UEdGraphPin* BranchElsePin = BranchNode->GetElsePin();
LastThenPin = BranchNode->GetThenPin();
UClass* ClassToSpawn = GetClassToSpawn();
if (validatedActorArraySpawn && ClassToSpawn)
{
//Branch for main loop control
UK2Node_IfThenElse* Branch = CompilerContext.SpawnIntermediateNode<UK2Node_IfThenElse>(this, SourceGraph);
Branch->AllocateDefaultPins();
//Create int Iterator
UK2Node_TemporaryVariable* IteratorVar = CompilerContext.SpawnIntermediateNode<UK2Node_TemporaryVariable>(this, SourceGraph);
IteratorVar->VariableType.PinCategory = Schema->PC_Int;
IteratorVar->AllocateDefaultPins();
//Iterator assignment (initialization to zero)
UK2Node_AssignmentStatement* IteratorInitialize = CompilerContext.SpawnIntermediateNode<UK2Node_AssignmentStatement>(this, SourceGraph);
IteratorInitialize->AllocateDefaultPins();
IteratorInitialize->GetValuePin()->DefaultValue = TEXT("0");
//Iterator assignment (incrementing)
UK2Node_AssignmentStatement* IteratorAssign = CompilerContext.SpawnIntermediateNode<UK2Node_AssignmentStatement>(this, SourceGraph);
IteratorAssign->AllocateDefaultPins();
//Increment iterator command
UK2Node_CallFunction* Increment = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(this, SourceGraph);
Increment->SetFromFunction(UKismetMathLibrary::StaticClass()->FindFunctionByName(TEXT("Add_IntInt")));
Increment->AllocateDefaultPins();
Increment->FindPinChecked(TEXT("B"))->DefaultValue = TEXT("1");
//Array length
UK2Node_CallArrayFunction* ArrayLength = CompilerContext.SpawnIntermediateNode<UK2Node_CallArrayFunction>(this, SourceGraph);
ArrayLength->SetFromFunction(UKismetArrayLibrary::StaticClass()->FindFunctionByName(TEXT("Array_Length")));
ArrayLength->AllocateDefaultPins();
//Array element retrieval
UK2Node_CallArrayFunction* GetElement = CompilerContext.SpawnIntermediateNode<UK2Node_CallArrayFunction>(this, SourceGraph);
GetElement->SetFromFunction(UKismetArrayLibrary::StaticClass()->FindFunctionByName(TEXT("Array_Get")));
GetElement->AllocateDefaultPins();
//Check node for iterator versus array length
UK2Node_CallFunction* Condition = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(this, SourceGraph);
Condition->SetFromFunction(UKismetMathLibrary::StaticClass()->FindFunctionByName(TEXT("Less_IntInt")));
Condition->AllocateDefaultPins();
//Connections to set up the loop
UEdGraphSchema_K2 const* const K2Schema = Cast<const UEdGraphSchema_K2>(Schema);
bIsErrorFree &= Schema->TryCreateConnection(LastThenPin, IteratorInitialize->GetExecPin());
bIsErrorFree &= Schema->TryCreateConnection(IteratorVar->GetVariablePin(), IteratorInitialize->GetVariablePin());
bIsErrorFree &= Schema->TryCreateConnection(IteratorInitialize->GetThenPin(), Branch->GetExecPin());
bIsErrorFree &= Schema->TryCreateConnection(SpawnedActorReturnPin, ArrayLength->GetTargetArrayPin());
bIsErrorFree &= Schema->TryCreateConnection(Condition->GetReturnValuePin(), Branch->GetConditionPin());
bIsErrorFree &= Schema->TryCreateConnection(IteratorVar->GetVariablePin(), Condition->FindPinChecked(TEXT("A")));
bIsErrorFree &= Schema->TryCreateConnection(ArrayLength->FindPin(K2Schema->PN_ReturnValue), Condition->FindPinChecked(TEXT("B")));
//Connections to establish loop iteration
bIsErrorFree &= Schema->TryCreateConnection(IteratorVar->GetVariablePin(), Increment->FindPinChecked(TEXT("A")));
bIsErrorFree &= Schema->TryCreateConnection(IteratorVar->GetVariablePin(), IteratorAssign->GetVariablePin());
bIsErrorFree &= Schema->TryCreateConnection(Increment->GetReturnValuePin(), IteratorAssign->GetValuePin());
bIsErrorFree &= Schema->TryCreateConnection(IteratorAssign->GetThenPin(), Branch->GetExecPin());
//This is the inner loop
LastThenPin = Branch->GetThenPin(); //Connect the loop branch to the spawn-assignment code block
bIsErrorFree &= Schema->TryCreateConnection(SpawnedActorReturnPin, GetElement->GetTargetArrayPin());
bIsErrorFree &= Schema->TryCreateConnection(IteratorVar->GetVariablePin(), GetElement->FindPinChecked(K2Schema->PN_Index));
bIsErrorFree &= ConnectSpawnProperties(ClassToSpawn, Schema, CompilerContext, SourceGraph, LastThenPin, GetElement->FindPinChecked(K2Schema->PN_Item)); //Last argument is the array element
bIsErrorFree &= Schema->TryCreateConnection(LastThenPin, IteratorAssign->GetExecPin()); //Connect the spawn-assignment code block to the iterator increment
//Finish by providing the proper path out
LastThenPin = Branch->GetElsePin();
}
// -------------------------------------------
// Set spawn variables
// Borrowed heavily from FKismetCompilerUtilities::GenerateAssignmentNodes
// -------------------------------------------
if (validatedActorSpawn && ClassToSpawn)
{
bIsErrorFree &= ConnectSpawnProperties(ClassToSpawn, Schema, CompilerContext, SourceGraph, LastThenPin, SpawnedActorReturnPin);
}
// -------------------------------------------
// Call FinishSpawning
// -------------------------------------------
UK2Node_CallFunction* const CallPostSpawnnProxyObjectNode = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(this, SourceGraph);
CallPostSpawnnProxyObjectNode->FunctionReference.SetExternalMember(ProxyPostpawnFunctionName, ProxyClass);
CallPostSpawnnProxyObjectNode->AllocateDefaultPins();
// Hook up the self connection
UEdGraphPin* PostspawnCallSelfPin = Schema->FindSelfPin(*CallPostSpawnnProxyObjectNode, EGPD_Input);
check(PostspawnCallSelfPin);
bIsErrorFree &= Schema->TryCreateConnection(ProxyObjectPin, PostspawnCallSelfPin);
// Link our Postspawn call in
bIsErrorFree &= Schema->TryCreateConnection(LastThenPin, CallPostSpawnnProxyObjectNode->FindPinChecked(Schema->PN_Execute));
// Hook up any other input parameters to PostSpawn
for (auto CurrentPin : Pins)
{
if (FBaseAsyncTaskHelper::ValidDataPin(CurrentPin, EGPD_Input, Schema))
{
UEdGraphPin* DestPin = CallPostSpawnnProxyObjectNode->FindPin(CurrentPin->PinName);
if (DestPin)
{
bIsErrorFree &= CompilerContext.CopyPinLinksToIntermediate(*CurrentPin, *DestPin).CanSafeConnect();
}
}
}
UEdGraphPin* InSpawnedActorPin = CallPostSpawnnProxyObjectNode->FindPin(TEXT("SpawnedActor"));
if (InSpawnedActorPin == nullptr)
{
CompilerContext.MessageLog.Error(*LOCTEXT("MissingSpawnedActorInputPin", "AbilityTask: Proxy is missing SpawnedActor input pin in FinishSpawningActor. @@").ToString(), this);
return;
}
bIsErrorFree &= Schema->TryCreateConnection(SpawnedActorReturnPin, InSpawnedActorPin);
LastThenPin = CallPostSpawnnProxyObjectNode->FindPinChecked(Schema->PN_Then);
// Move the connections from the original node then pin to the last internal then pin
bIsErrorFree &= CompilerContext.MovePinLinksToIntermediate(*FindPinChecked(Schema->PN_Then), *LastThenPin).CanSafeConnect();
bIsErrorFree &= CompilerContext.CopyPinLinksToIntermediate(*LastThenPin, *BranchElsePin).CanSafeConnect();
if (!bIsErrorFree)
{
CompilerContext.MessageLog.Error(*LOCTEXT("InternalConnectionError", "BaseAsyncTask: Internal connection error. @@").ToString(), this);
}
// Make sure we caught everything
BreakAllNodeLinks();
}
//amd this is where magic really happens. This will expand node for our custom object, with properties
//which are set as EditAwnywhere and meta=(ExposeOnSpawn), or equivalent in blueprint.
void UBPNode_CreateItemData::ExpandNode(class FKismetCompilerContext& CompilerContext, UEdGraph* SourceGraph)
{
Super::ExpandNode(CompilerContext, SourceGraph);
//look for static function in BlueprintFunctionLibrary
//In this class and of this name
static FName Create_FunctionName = GET_FUNCTION_NAME_CHECKED(UGISBlueprintFunctionLibrary, CreateItem);
//with these inputs (as a Side note, these should be probabaly FName not FString)
static FString WorldContextObject_ParamName = FString(TEXT("WorldContextObject"));
static FString WidgetType_ParamName = FString(TEXT("ItemClass"));
static FString OwningPlayer_ParamName = FString(TEXT("OwningPlayer"));
//get pointer to self;
UBPNode_CreateItemData* CreateItemDataNode = this;
//get pointers to default pins.
//Exec pins are those big arrows, connected with thick white lines.
UEdGraphPin* SpawnNodeExec = CreateItemDataNode->GetExecPin();
//gets world context pin from our static function
UEdGraphPin* SpawnWorldContextPin = CreateItemDataNode->GetWorldContextPin();
//the same as above
UEdGraphPin* SpawnOwningPlayerPin = CreateItemDataNode->GetOwningPlayerPin();
//get class pin which is used to determine which class to spawn.
UEdGraphPin* SpawnClassPin = CreateItemDataNode->GetClassPin();
//then pin is the same as exec pin, just on the other side (the out arrow).
UEdGraphPin* SpawnNodeThen = CreateItemDataNode->GetThenPin();
//result pin, which will output our spawned object.
UEdGraphPin* SpawnNodeResult = CreateItemDataNode->GetResultPin();
UClass* SpawnClass = (SpawnClassPin != NULL) ? Cast<UClass>(SpawnClassPin->DefaultObject) : NULL;
if ((0 == SpawnClassPin->LinkedTo.Num()) && (NULL == SpawnClass))
{
CompilerContext.MessageLog.Error(*LOCTEXT("CreateItemDAtaNodeMissingClass_Error", "Spawn node @@ must have a class specified.").ToString(), CreateItemDataNode);
// we break exec links so this is the only error we get, don't want the CreateItemData node being considered and giving 'unexpected node' type warnings
CreateItemDataNode->BreakAllNodeLinks();
return;
}
//////////////////////////////////////////////////////////////////////////
// create 'UWidgetBlueprintLibrary::Create' call node
UK2Node_CallFunction* CallCreateNode = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(CreateItemDataNode, SourceGraph);
CallCreateNode->FunctionReference.SetExternalMember(Create_FunctionName, UBPNode_CreateItemData::StaticClass());
CallCreateNode->AllocateDefaultPins();
//allocate nodes for created widget.
UEdGraphPin* CallCreateExec = CallCreateNode->GetExecPin();
UEdGraphPin* CallCreateWorldContextPin = CallCreateNode->FindPinChecked(WorldContextObject_ParamName);
UEdGraphPin* CallCreateWidgetTypePin = CallCreateNode->FindPinChecked(WidgetType_ParamName);
UEdGraphPin* CallCreateOwningPlayerPin = CallCreateNode->FindPinChecked(OwningPlayer_ParamName);
UEdGraphPin* CallCreateResult = CallCreateNode->GetReturnValuePin();
// Move 'exec' connection from create widget node to 'UWidgetBlueprintLibrary::Create'
CompilerContext.MovePinLinksToIntermediate(*SpawnNodeExec, *CallCreateExec);
if (SpawnClassPin->LinkedTo.Num() > 0)
{
// Copy the 'blueprint' connection from the spawn node to 'UWidgetBlueprintLibrary::Create'
CompilerContext.MovePinLinksToIntermediate(*SpawnClassPin, *CallCreateWidgetTypePin);
}
else
{
// Copy blueprint literal onto 'UWidgetBlueprintLibrary::Create' call
CallCreateWidgetTypePin->DefaultObject = SpawnClass;
}
// Copy the world context connection from the spawn node to 'UWidgetBlueprintLibrary::Create' if necessary
if (SpawnWorldContextPin)
{
CompilerContext.MovePinLinksToIntermediate(*SpawnWorldContextPin, *CallCreateWorldContextPin);
}
// Copy the 'Owning Player' connection from the spawn node to 'UWidgetBlueprintLibrary::Create'
CompilerContext.MovePinLinksToIntermediate(*SpawnOwningPlayerPin, *CallCreateOwningPlayerPin);
// Move result connection from spawn node to 'UWidgetBlueprintLibrary::Create'
CallCreateResult->PinType = SpawnNodeResult->PinType; // Copy type so it uses the right actor subclass
CompilerContext.MovePinLinksToIntermediate(*SpawnNodeResult, *CallCreateResult);
//////////////////////////////////////////////////////////////////////////
// create 'set var' nodes
// Get 'result' pin from 'begin spawn', this is the actual actor we want to set properties on
UEdGraphPin* LastThen = FKismetCompilerUtilities::GenerateAssignmentNodes(CompilerContext, SourceGraph, CallCreateNode, CreateItemDataNode, CallCreateResult, GetClassToSpawn());
// Move 'then' connection from create widget node to the last 'then'
CompilerContext.MovePinLinksToIntermediate(*SpawnNodeThen, *LastThen);
// Break any links to the expanded node
CreateItemDataNode->BreakAllNodeLinks();
}
