Method HarvestNodeConnections

Source/Flow/Private/FlowAsset.cpp:514–614

}

void UFlowAsset::HarvestNodeConnections(UFlowNode* TargetNode)
{
	TArray<UFlowNode*> TargetNodes;

	if (IsValid(TargetNode))
	{
		TargetNodes.Reserve(1);
		TargetNodes.Add(TargetNode);
	}
	else
	{
		TargetNodes.Reserve(Nodes.Num());
		for (const TPair<FGuid, UFlowNode*>& Pair : ObjectPtrDecay(Nodes))
		{
			TargetNodes.Add(Pair.Value);
		}
	}

	// Remove any invalid nodes
	for (auto NodeIt = TargetNodes.CreateIterator(); NodeIt; ++NodeIt)
	{
		if (*NodeIt == nullptr)
		{
			NodeIt.RemoveCurrent();
			Modify();
		}
	}

	for (UFlowNode* FlowNode : TargetNodes)
	{
		bool bNodeDirty = false;

		TMap<FName, FConnectedPin> FoundConnections;
		const TArray<UEdGraphPin*>& GraphNodePins = FlowNode->GetGraphNode()->Pins;

		for (const UEdGraphPin* ThisPin : GraphNodePins)
		{
			const bool bIsExecPin = FFlowPin::IsExecPinCategory(ThisPin->PinType.PinCategory);
			const bool bIsDataPin = !bIsExecPin;
			const bool bIsOutputPin = (ThisPin->Direction == EGPD_Output);
			const bool bIsInputPin = (ThisPin->Direction == EGPD_Input);
			const bool bHasAtLeastOneConnection = ThisPin->LinkedTo.Num() > 0;

			if (bIsExecPin && bIsOutputPin && bHasAtLeastOneConnection)
			{
				// For Exec Pins, harvest the 0th connection (we should have only 1 connection, because of schema rules)
				if (const UEdGraphPin* LinkedPin = ThisPin->LinkedTo[0])
				{
					const UEdGraphNode* LinkedNode = LinkedPin->GetOwningNode();
					FoundConnections.Add(ThisPin->PinName, FConnectedPin(LinkedNode->NodeGuid, LinkedPin->PinName));
				}
			}
			else if (bIsDataPin && bIsInputPin && bHasAtLeastOneConnection)
			{
				// For Data Pins, harvest the 0th connection (we should have only 1 connection, because of schema rules)
				if (const UEdGraphPin* LinkedPin = ThisPin->LinkedTo[0])
				{
					const UEdGraphNode* LinkedNode = LinkedPin->GetOwningNode();