// Reconcile other pin links:
// - Links between nodes within the copied set are fine
// - Links to nodes that were not copied need to be fixed up if the copy-paste was in the same graph or broken completely
// Call PostPasteNode on each node
void FEdGraphUtilities::PostProcessPastedNodes(TSet<UEdGraphNode*>& SpawnedNodes)
{
// Run thru and fix up the node's pin links; they may point to invalid pins if the paste was to another graph
for (TSet<UEdGraphNode*>::TIterator It(SpawnedNodes); It; ++It)
{
UEdGraphNode* Node = *It;
UEdGraph* CurrentGraph = Node->GetGraph();
for (int32 PinIndex = 0; PinIndex < Node->Pins.Num(); ++PinIndex)
{
UEdGraphPin* ThisPin = Node->Pins[PinIndex];
for (int32 LinkIndex = 0; LinkIndex < ThisPin->LinkedTo.Num(); )
{
UEdGraphPin* OtherPin = ThisPin->LinkedTo[LinkIndex];
if (OtherPin == NULL)
{
// Totally bogus link
ThisPin->LinkedTo.RemoveAtSwap(LinkIndex);
}
else if (!SpawnedNodes.Contains(OtherPin->GetOwningNode()))
{
// It's a link across the selection set, so it should be broken
OtherPin->LinkedTo.RemoveSwap(ThisPin);
ThisPin->LinkedTo.RemoveAtSwap(LinkIndex);
}
else if (!OtherPin->LinkedTo.Contains(ThisPin))
{
// The link needs to be reciprocal
check(OtherPin->GetOwningNode()->GetGraph() == CurrentGraph);
OtherPin->LinkedTo.Add(ThisPin);
++LinkIndex;
}
else
{
// Everything seems fine but sanity check the graph
check(OtherPin->GetOwningNode()->GetGraph() == CurrentGraph);
++LinkIndex;
}
}
}
}
// Give every node a chance to deep copy associated resources, etc...
for (TSet<UEdGraphNode*>::TIterator It(SpawnedNodes); It; ++It)
{
UEdGraphNode* Node = *It;
Node->PostPasteNode();
Node->ReconstructNode();
// Ensure we have RF_Transactional set on all pasted nodes, as its not copied in the T3D format
Node->SetFlags(RF_Transactional);
}
}
void UMaterialGraphSchema::BreakNodeLinks(UEdGraphNode& TargetNode) const
{
bool bHasLinksToBreak = false;
for (auto PinIt = TargetNode.Pins.CreateConstIterator(); PinIt; ++PinIt)
{
UEdGraphPin* Pin = *PinIt;
for (auto LinkIt = Pin->LinkedTo.CreateConstIterator(); LinkIt; ++LinkIt)
{
if (*LinkIt)
{
bHasLinksToBreak = true;
}
}
}
Super::BreakNodeLinks(TargetNode);
if (bHasLinksToBreak)
{
FMaterialEditorUtilities::UpdateMaterialAfterGraphChange(TargetNode.GetGraph());
}
}
void FKismetVariableDragDropAction::HoverTargetChanged()
{
UProperty* VariableProperty = GetVariableProperty();
if (VariableProperty == nullptr)
{
return;
}
FString VariableString = VariableName.ToString();
// Icon/text to draw on tooltip
FSlateColor IconColor = FLinearColor::White;
const FSlateBrush* StatusSymbol = FEditorStyle::GetBrush(TEXT("Graph.ConnectorFeedback.Error"));
FText Message = LOCTEXT("InvalidDropTarget", "Invalid drop target!");
UEdGraphPin* PinUnderCursor = GetHoveredPin();
bool bCanMakeSetter = true;
bool bBadSchema = false;
bool bBadGraph = false;
UEdGraph* HoveredGraph = GetHoveredGraph();
if (HoveredGraph)
{
if (Cast<const UEdGraphSchema_K2>(HoveredGraph->GetSchema()) == NULL)
{
bBadSchema = true;
}
else if(!CanVariableBeDropped(VariableProperty, *HoveredGraph))
{
bBadGraph = true;
}
UStruct* Outer = CastChecked<UStruct>(VariableProperty->GetOuter());
FNodeConstructionParams NewNodeParams;
NewNodeParams.VariableName = VariableName;
const UBlueprint* DropOnBlueprint = FBlueprintEditorUtils::FindBlueprintForGraph(HoveredGraph);
NewNodeParams.Graph = HoveredGraph;
NewNodeParams.VariableSource = Outer;
bCanMakeSetter = CanExecuteMakeSetter(NewNodeParams, VariableProperty);
}
UEdGraphNode* VarNodeUnderCursor = Cast<UK2Node_Variable>(GetHoveredNode());
if (bBadSchema)
{
StatusSymbol = FEditorStyle::GetBrush(TEXT("Graph.ConnectorFeedback.Error"));
Message = LOCTEXT("CannotCreateInThisSchema", "Cannot access variables in this type of graph");
}
else if(bBadGraph)
{
FFormatNamedArguments Args;
Args.Add(TEXT("VariableName"), FText::FromString(VariableString));
Args.Add(TEXT("Scope"), FText::FromString(HoveredGraph->GetName()));
StatusSymbol = FEditorStyle::GetBrush(TEXT("Graph.ConnectorFeedback.Error"));
if(IsFromBlueprint(FBlueprintEditorUtils::FindBlueprintForGraph(HoveredGraph)) && VariableProperty->GetOuter()->IsA(UFunction::StaticClass()))
{
Message = FText::Format( LOCTEXT("IncorrectGraphForLocalVariable_Error", "Cannot place local variable '{VariableName}' in external scope '{Scope}'"), Args);
}
else
{
Message = FText::Format( LOCTEXT("IncorrectGraphForVariable_Error", "Cannot place variable '{VariableName}' in external scope '{Scope}'"), Args);
}
}
else if (PinUnderCursor != NULL)
{
FFormatNamedArguments Args;
Args.Add(TEXT("PinUnderCursor"), FText::FromString(PinUnderCursor->PinName));
Args.Add(TEXT("VariableName"), FText::FromString(VariableString));
if(CanVariableBeDropped(VariableProperty, *PinUnderCursor->GetOwningNode()->GetGraph()))
{
const UEdGraphSchema_K2* Schema = CastChecked<const UEdGraphSchema_K2>(PinUnderCursor->GetSchema());
const bool bIsRead = PinUnderCursor->Direction == EGPD_Input;
const UBlueprint* Blueprint = FBlueprintEditorUtils::FindBlueprintForNode(PinUnderCursor->GetOwningNode());
const bool bReadOnlyProperty = FBlueprintEditorUtils::IsPropertyReadOnlyInCurrentBlueprint(Blueprint, VariableProperty);
const bool bCanWriteIfNeeded = bIsRead || !bReadOnlyProperty;
FEdGraphPinType VariablePinType;
Schema->ConvertPropertyToPinType(VariableProperty, VariablePinType);
const bool bTypeMatch = Schema->ArePinTypesCompatible(VariablePinType, PinUnderCursor->PinType);
Args.Add(TEXT("PinUnderCursor"), FText::FromString(PinUnderCursor->PinName));
if (bTypeMatch && bCanWriteIfNeeded)
{
StatusSymbol = FEditorStyle::GetBrush(TEXT("Graph.ConnectorFeedback.OK"));
if (bIsRead)
{
Message = FText::Format(LOCTEXT("MakeThisEqualThat_PinEqualVariableName", "Make {PinUnderCursor} = {VariableName}"), Args);
}
else
{
Message = FText::Format(LOCTEXT("MakeThisEqualThat_VariableNameEqualPin", "Make {VariableName} = {PinUnderCursor}"), Args);
}
}
else
{
StatusSymbol = FEditorStyle::GetBrush(TEXT("Graph.ConnectorFeedback.Error"));
if (!bCanWriteIfNeeded)
{
Message = FText::Format(LOCTEXT("ReadOnlyVar_Error", "Cannot write to read-only variable '{VariableName}'"), Args);
}
else
{
Message = FText::Format(LOCTEXT("NotCompatible_Error", "The type of '{VariableName}' is not compatible with {PinUnderCursor}"), Args);
}
}
}
else
{
Args.Add(TEXT("Scope"), FText::FromString(PinUnderCursor->GetOwningNode()->GetGraph()->GetName()));
StatusSymbol = FEditorStyle::GetBrush(TEXT("Graph.ConnectorFeedback.Error"));
Message = FText::Format( LOCTEXT("IncorrectGraphForPin_Error", "Cannot place local variable '{VariableName}' in external scope '{Scope}'"), Args);
}
}
else if (VarNodeUnderCursor != NULL)
{
FFormatNamedArguments Args;
Args.Add(TEXT("VariableName"), FText::FromString(VariableString));
if(CanVariableBeDropped(VariableProperty, *VarNodeUnderCursor->GetGraph()))
{
const bool bIsRead = VarNodeUnderCursor->IsA(UK2Node_VariableGet::StaticClass());
const UBlueprint* Blueprint = FBlueprintEditorUtils::FindBlueprintForNode(VarNodeUnderCursor);
const bool bReadOnlyProperty = FBlueprintEditorUtils::IsPropertyReadOnlyInCurrentBlueprint(Blueprint, VariableProperty);
const bool bCanWriteIfNeeded = bIsRead || !bReadOnlyProperty;
if (bCanWriteIfNeeded)
{
Args.Add(TEXT("ReadOrWrite"), bIsRead ? LOCTEXT("Read", "read") : LOCTEXT("Write", "write"));
if(WillBreakLinks(VarNodeUnderCursor, VariableProperty))
{
StatusSymbol = FEditorStyle::GetBrush(TEXT("Graph.ConnectorFeedback.OKWarn"));
Message = FText::Format( LOCTEXT("ChangeNodeToWarnBreakLinks", "Change node to {ReadOrWrite} '{VariableName}', WARNING this will break links!"), Args);
}
else
{
StatusSymbol = FEditorStyle::GetBrush(TEXT("Graph.ConnectorFeedback.OK"));
Message = FText::Format( LOCTEXT("ChangeNodeTo", "Change node to {ReadOrWrite} '{VariableName}'"), Args);
}
}
else
{
StatusSymbol = FEditorStyle::GetBrush(TEXT("Graph.ConnectorFeedback.Error"));
Message = FText::Format( LOCTEXT("ReadOnlyVar_Error", "Cannot write to read-only variable '{VariableName}'"), Args);
}
}
else
{
Args.Add(TEXT("Scope"), FText::FromString(VarNodeUnderCursor->GetGraph()->GetName()));
StatusSymbol = FEditorStyle::GetBrush(TEXT("Graph.ConnectorFeedback.Error"));
Message = FText::Format( LOCTEXT("IncorrectGraphForNodeReplace_Error", "Cannot replace node with local variable '{VariableName}' in external scope '{Scope}'"), Args);
}
}
else if (!HoveredCategoryName.IsEmpty())
{
// Find Blueprint that made this class and get category of variable
FText Category;
UBlueprint* Blueprint;
// Find the Blueprint for this property
if(Cast<UFunction>(VariableSource.Get()))
{
Blueprint = UBlueprint::GetBlueprintFromClass(Cast<UClass>(VariableSource->GetOuter()));
}
else
{
Blueprint = UBlueprint::GetBlueprintFromClass(Cast<UClass>(VariableSource.Get()));
}
if(Blueprint != NULL)
{
Category = FBlueprintEditorUtils::GetBlueprintVariableCategory(Blueprint, VariableProperty->GetFName(), GetLocalVariableScope() );
}
// See if class is native
UClass* OuterClass = Cast<UClass>(VariableProperty->GetOuter());
if(OuterClass || Cast<UFunction>(VariableProperty->GetOuter()))
{
const bool bIsNativeVar = (OuterClass && OuterClass->ClassGeneratedBy == NULL);
FFormatNamedArguments Args;
Args.Add(TEXT("VariableName"), FText::FromString(VariableString));
Args.Add(TEXT("HoveredCategoryName"), HoveredCategoryName);
if (bIsNativeVar)
{
StatusSymbol = FEditorStyle::GetBrush(TEXT("Graph.ConnectorFeedback.Error"));
Message = FText::Format( LOCTEXT("ChangingCatagoryNotThisVar", "Cannot change category for variable '{VariableName}'"), Args );
}
else if (Category.EqualTo(HoveredCategoryName))
{
StatusSymbol = FEditorStyle::GetBrush(TEXT("Graph.ConnectorFeedback.Error"));
Message = FText::Format( LOCTEXT("ChangingCatagoryAlreadyIn", "Variable '{VariableName}' is already in category '{HoveredCategoryName}'"), Args );
}
else
{
StatusSymbol = FEditorStyle::GetBrush(TEXT("Graph.ConnectorFeedback.OK"));
Message = FText::Format( LOCTEXT("ChangingCatagoryOk", "Move variable '{VariableName}' to category '{HoveredCategoryName}'"), Args );
}
}
}
else if (HoveredAction.IsValid())
{
if(HoveredAction.Pin()->GetTypeId() == FEdGraphSchemaAction_K2Var::StaticGetTypeId())
{
FEdGraphSchemaAction_K2Var* VarAction = (FEdGraphSchemaAction_K2Var*)HoveredAction.Pin().Get();
FName TargetVarName = VarAction->GetVariableName();
// Needs to have a valid index to move it (this excludes variables added through other means, like timelines/components
int32 MoveVarIndex = INDEX_NONE;
int32 TargetVarIndex = INDEX_NONE;
UBlueprint* Blueprint = UBlueprint::GetBlueprintFromClass(Cast<UClass>(VariableSource.Get()));
if(Blueprint != NULL)
{
MoveVarIndex = FBlueprintEditorUtils::FindNewVariableIndex(Blueprint, VariableName);
TargetVarIndex = FBlueprintEditorUtils::FindNewVariableIndex(Blueprint, TargetVarName);
}
FFormatNamedArguments Args;
Args.Add(TEXT("VariableName"), FText::FromString(VariableString));
Args.Add(TEXT("TargetVarName"), FText::FromName(TargetVarName));
if(MoveVarIndex == INDEX_NONE)
{
StatusSymbol = FEditorStyle::GetBrush(TEXT("Graph.ConnectorFeedback.Error"));
Message = FText::Format( LOCTEXT("MoveVarDiffClass", "Cannot reorder variable '{VariableName}'."), Args );
}
else if(TargetVarIndex == INDEX_NONE)
{
StatusSymbol = FEditorStyle::GetBrush(TEXT("Graph.ConnectorFeedback.Error"));
Message = FText::Format( LOCTEXT("MoveVarOther", "Cannot reorder variable '{VariableName}' before '{TargetVarName}'."), Args );
}
else if(VariableName == TargetVarName)
{
StatusSymbol = FEditorStyle::GetBrush(TEXT("Graph.ConnectorFeedback.Error"));
Message = FText::Format( LOCTEXT("MoveVarYourself", "Cannot reorder variable '{VariableName}' before itself."), Args );
}
else
{
StatusSymbol = FEditorStyle::GetBrush(TEXT("Graph.ConnectorFeedback.OK"));
Message = FText::Format( LOCTEXT("MoveVarOK", "Reorder variable '{VariableName}' before '{TargetVarName}'"), Args );
}
}
}
else if (bAltDrag && !bCanMakeSetter)
{
FFormatNamedArguments Args;
Args.Add(TEXT("VariableName"), FText::FromString(VariableString));
StatusSymbol = FEditorStyle::GetBrush(TEXT("Graph.ConnectorFeedback.Error"));
Message = FText::Format(LOCTEXT("CannotPlaceSetter", "Variable '{VariableName}' is readonly, you cannot set this variable."), Args);
}
// Draw variable icon
else
{
StatusSymbol = FBlueprintEditor::GetVarIconAndColor(VariableSource.Get(), VariableName, IconColor);
Message = FText::FromString(VariableString);
}
SetSimpleFeedbackMessage(StatusSymbol, IconColor, Message);
}
void FKismetConnectionDrawingPolicy::BuildExecutionRoadmap()
{
LatestTimeDiscovered = 0.0;
// Only do highlighting in PIE or SIE
if (!CanBuildRoadmap())
{
return;
}
UBlueprint* TargetBP = FBlueprintEditorUtils::FindBlueprintForGraphChecked(GraphObj);
UObject* ActiveObject = TargetBP->GetObjectBeingDebugged();
check(ActiveObject); // Due to CanBuildRoadmap
// Redirect the target Blueprint when debugging with a macro graph visible
if (TargetBP->BlueprintType == BPTYPE_MacroLibrary)
{
TargetBP = Cast<UBlueprint>(ActiveObject->GetClass()->ClassGeneratedBy);
}
TArray<UEdGraphNode*> SequentialNodesInGraph;
TArray<double> SequentialNodeTimes;
{
const TSimpleRingBuffer<FKismetTraceSample>& TraceStack = FKismetDebugUtilities::GetTraceStack();
UBlueprintGeneratedClass* TargetClass = Cast<UBlueprintGeneratedClass>(TargetBP->GeneratedClass);
FBlueprintDebugData& DebugData = TargetClass->GetDebugData();
for (int32 i = 0; i < TraceStack.Num(); ++i)
{
const FKismetTraceSample& Sample = TraceStack(i);
if (UObject* TestObject = Sample.Context.Get())
{
if (TestObject == ActiveObject)
{
if (UEdGraphNode* Node = DebugData.FindSourceNodeFromCodeLocation(Sample.Function.Get(), Sample.Offset, /*bAllowImpreciseHit=*/ false))
{
if (GraphObj == Node->GetGraph())
{
SequentialNodesInGraph.Add(Node);
SequentialNodeTimes.Add(Sample.ObservationTime);
}
else
{
// If the top-level source node is a macro instance node
UK2Node_MacroInstance* MacroInstanceNode = Cast<UK2Node_MacroInstance>(Node);
if (MacroInstanceNode)
{
// Attempt to locate the macro source node through the code mapping
UEdGraphNode* MacroSourceNode = DebugData.FindMacroSourceNodeFromCodeLocation(Sample.Function.Get(), Sample.Offset);
if (MacroSourceNode)
{
// If the macro source node is located in the current graph context
if (GraphObj == MacroSourceNode->GetGraph())
{
// Add it to the sequential node list
SequentialNodesInGraph.Add(MacroSourceNode);
SequentialNodeTimes.Add(Sample.ObservationTime);
}
else
{
// The macro source node isn't in the current graph context, but we might have a macro instance node that is
// in the current graph context, so obtain the set of macro instance nodes that are mapped to the code here.
TArray<UEdGraphNode*> MacroInstanceNodes;
DebugData.FindMacroInstanceNodesFromCodeLocation(Sample.Function.Get(), Sample.Offset, MacroInstanceNodes);
// For each macro instance node in the set
for (auto MacroInstanceNodeIt = MacroInstanceNodes.CreateConstIterator(); MacroInstanceNodeIt; ++MacroInstanceNodeIt)
{
// If the macro instance node is located in the current graph context
MacroInstanceNode = Cast<UK2Node_MacroInstance>(*MacroInstanceNodeIt);
if (MacroInstanceNode && GraphObj == MacroInstanceNode->GetGraph())
{
// Add it to the sequential node list
SequentialNodesInGraph.Add(MacroInstanceNode);
SequentialNodeTimes.Add(Sample.ObservationTime);
// Exit the loop; we're done
break;
}
}
}
}
}
}
}
}
}
}
}
// Run thru and apply bonus time
const float InvNumNodes = 1.0f / (float)SequentialNodeTimes.Num();
for (int32 i = 0; i < SequentialNodesInGraph.Num(); ++i)
{
double& ObservationTime = SequentialNodeTimes[i];
const float PositionRatio = (SequentialNodeTimes.Num() - i) * InvNumNodes;
const float PositionBonus = FMath::Pow(PositionRatio, TracePositionExponent) * TracePositionBonusPeriod;
ObservationTime += PositionBonus;
LatestTimeDiscovered = FMath::Max<double>(LatestTimeDiscovered, ObservationTime);
}
// Record the unique node->node pairings, keeping only the most recent times for each pairing
for (int32 i = SequentialNodesInGraph.Num() - 1; i >= 1; --i)
{
UEdGraphNode* CurNode = SequentialNodesInGraph[i];
double CurNodeTime = SequentialNodeTimes[i];
UEdGraphNode* NextNode = SequentialNodesInGraph[i-1];
double NextNodeTime = SequentialNodeTimes[i-1];
FExecPairingMap& Predecessors = PredecessorNodes.FindOrAdd(NextNode);
// Update the timings if this is a more recent pairing
FTimePair& Timings = Predecessors.FindOrAdd(CurNode);
if (Timings.ThisExecTime < NextNodeTime)
{
Timings.PredExecTime = CurNodeTime;
Timings.ThisExecTime = NextNodeTime;
}
}
// Fade only when free-running (since we're using GCurrentTime, instead of FPlatformTime::Seconds)
const double MaxTimeAhead = FMath::Min(GCurrentTime + 2*TracePositionBonusPeriod, LatestTimeDiscovered); //@TODO: Rough clamping; should be exposed as a parameter
CurrentTime = FMath::Max(GCurrentTime, MaxTimeAhead);
}
void FKismetConnectionDrawingPolicy::BuildExecutionRoadmap()
{
LatestTimeDiscovered = 0.0;
// Only do highlighting in PIE or SIE
if (!CanBuildRoadmap())
{
return;
}
UBlueprint* TargetBP = FBlueprintEditorUtils::FindBlueprintForGraphChecked(GraphObj);
UObject* ActiveObject = TargetBP->GetObjectBeingDebugged();
check(ActiveObject); // Due to CanBuildRoadmap
// Redirect the target Blueprint when debugging with a macro graph visible
if (TargetBP->BlueprintType == BPTYPE_MacroLibrary)
{
TargetBP = Cast<UBlueprint>(ActiveObject->GetClass()->ClassGeneratedBy);
}
TArray<UEdGraphNode*> SequentialNodesInGraph;
TArray<double> SequentialNodeTimes;
TArray<UEdGraphPin*> SequentialExecPinsInGraph;
{
const TSimpleRingBuffer<FKismetTraceSample>& TraceStack = FKismetDebugUtilities::GetTraceStack();
UBlueprintGeneratedClass* TargetClass = Cast<UBlueprintGeneratedClass>(TargetBP->GeneratedClass);
FBlueprintDebugData& DebugData = TargetClass->GetDebugData();
for (int32 i = 0; i < TraceStack.Num(); ++i)
{
const FKismetTraceSample& Sample = TraceStack(i);
if (UObject* TestObject = Sample.Context.Get())
{
if (TestObject == ActiveObject)
{
UEdGraphPin* AssociatedPin = DebugData.FindExecPinFromCodeLocation(Sample.Function.Get(), Sample.Offset);
if (UEdGraphNode* Node = DebugData.FindSourceNodeFromCodeLocation(Sample.Function.Get(), Sample.Offset, /*bAllowImpreciseHit=*/ false))
{
if (GraphObj == Node->GetGraph())
{
SequentialNodesInGraph.Add(Node);
SequentialNodeTimes.Add(Sample.ObservationTime);
SequentialExecPinsInGraph.Add(AssociatedPin);
}
else
{
// If the top-level source node is a macro instance node
UK2Node_MacroInstance* MacroInstanceNode = Cast<UK2Node_MacroInstance>(Node);
if (MacroInstanceNode)
{
// Attempt to locate the macro source node through the code mapping
UEdGraphNode* MacroSourceNode = DebugData.FindMacroSourceNodeFromCodeLocation(Sample.Function.Get(), Sample.Offset);
if (MacroSourceNode)
{
// If the macro source node is located in the current graph context
if (GraphObj == MacroSourceNode->GetGraph())
{
// Add it to the sequential node list
SequentialNodesInGraph.Add(MacroSourceNode);
SequentialNodeTimes.Add(Sample.ObservationTime);
SequentialExecPinsInGraph.Add(AssociatedPin);
}
else
{
// The macro source node isn't in the current graph context, but we might have a macro instance node that is
// in the current graph context, so obtain the set of macro instance nodes that are mapped to the code here.
TArray<UEdGraphNode*> MacroInstanceNodes;
DebugData.FindMacroInstanceNodesFromCodeLocation(Sample.Function.Get(), Sample.Offset, MacroInstanceNodes);
// For each macro instance node in the set
for (auto MacroInstanceNodeIt = MacroInstanceNodes.CreateConstIterator(); MacroInstanceNodeIt; ++MacroInstanceNodeIt)
{
// If the macro instance node is located in the current graph context
MacroInstanceNode = Cast<UK2Node_MacroInstance>(*MacroInstanceNodeIt);
if (MacroInstanceNode && GraphObj == MacroInstanceNode->GetGraph())
{
// Add it to the sequential node list
SequentialNodesInGraph.Add(MacroInstanceNode);
SequentialNodeTimes.Add(Sample.ObservationTime);
SequentialExecPinsInGraph.Add(AssociatedPin);
// Exit the loop; we're done
break;
}
}
}
}
}
}
}
}
}
}
}
// Run thru and apply bonus time
const float InvNumNodes = 1.0f / (float)SequentialNodeTimes.Num();
for (int32 i = 0; i < SequentialNodesInGraph.Num(); ++i)
{
double& ObservationTime = SequentialNodeTimes[i];
const float PositionRatio = (SequentialNodeTimes.Num() - i) * InvNumNodes;
const float PositionBonus = FMath::Pow(PositionRatio, TracePositionExponent) * TracePositionBonusPeriod;
ObservationTime += PositionBonus;
LatestTimeDiscovered = FMath::Max<double>(LatestTimeDiscovered, ObservationTime);
}
UEdGraphPin* LastExecPin = NULL;
// Record the unique exec-pin to time pairings, keeping only the most recent
// times for each pairing... reverse the "SequentialNodes" because right now
// it is in stack order (with the last executed node first)
for (int32 i = SequentialNodesInGraph.Num() - 1; i >= 1; --i)
{
UEdGraphNode* CurNode = SequentialNodesInGraph[i];
UEdGraphNode* NextNode = SequentialNodesInGraph[i-1];
// keep track of the last exec-pin executed by CurNode (these tracked
// pins coincide with "WireTraceSite" op-codes that have been injected
// prior to every "goto" statement... this way we have context for which
// pin executed the jump)
if (UEdGraphPin* AssociatedPin = SequentialExecPinsInGraph[i])
{
LastExecPin = AssociatedPin;
}
// if this statement is a jump (from one node to another)
if (CurNode != NextNode)
{
// if there was a wire-trace op-code inserted before this jump
if (LastExecPin != NULL)
{
//ensure(LastExecPin->GetOwningNode() == CurNode);
double NextNodeTime = SequentialNodeTimes[i-1];
FExecPairingMap& ExecPaths = PredecessorPins.FindOrAdd(NextNode);
FTimePair& ExecTiming = ExecPaths.FindOrAdd(LastExecPin);
// make sure that if we've already visited this exec-pin (like
// in a for-loop or something), that we're replacing it with a
// more recent execution time
//
// @TODO I don't see when this wouldn't be the case
if (ExecTiming.ThisExecTime < NextNodeTime)
{
double CurNodeTime = SequentialNodeTimes[i];
ExecTiming.ThisExecTime = NextNodeTime;
ExecTiming.PredExecTime = CurNodeTime;
}
}
// if the nodes aren't graphically connected how could they be
// executed back-to-back? well, this could be a pop back to a
// sequence node from the end of one thread of execution, etc.
else if (AreNodesGraphicallySequential(CurNode, NextNode))
{
// only warn when the nodes are directly connected (this is all
// for execution flow visualization after all)
UE_LOG(LogConnectionDrawingPolicy, Warning, TEXT("Looks like a wire-trace was not injected before the jump from '%s' to '%s'."),
*CurNode->GetNodeTitle(ENodeTitleType::FullTitle).ToString(), *NextNode->GetNodeTitle(ENodeTitleType::FullTitle).ToString());
}
// clear the exec-pin (we're moving to a new node and want to find
// it's executed out pin)
LastExecPin = NULL;
}
// else, we're only collecting this data for tracing node-to-node
// executions (so we don't care about this sequence of statements)
}
// Fade only when free-running (since we're using FApp::GetCurrentTime(), instead of FPlatformTime::Seconds)
const double MaxTimeAhead = FMath::Min(FApp::GetCurrentTime() + 2*TracePositionBonusPeriod, LatestTimeDiscovered); //@TODO: Rough clamping; should be exposed as a parameter
CurrentTime = FMath::Max(FApp::GetCurrentTime(), MaxTimeAhead);
}
