/// <summary>
/// Removes a sequence element from the graph, by repointing incoming references to the ones referenced by outgoing items on this export. This is a very basic utility, only use it for items with one input and potentially multiple outputs.
/// </summary>
/// <param name="elementToSkip">Th sequence object to skip</param>
/// <param name="outboundLinkIdx">The 0-indexed outbound link that should be attached the preceding entry element, as if this one had fired that link.</param>
public static void SkipSequenceElement(ExportEntry elementToSkip, string outboundLinkName = null, int outboundLinkIdx = -1)
{
if (outboundLinkIdx == -1 && outboundLinkName == null)
{
throw new Exception(@"SkipSequenceElement() must have an outboundLinkName or an outboundLinkIdx!");
}
if (outboundLinkIdx == -1)
{
var outboundLinkNames = KismetHelper.GetOutboundLinkNames(elementToSkip);
outboundLinkIdx = outboundLinkNames.IndexOf(outboundLinkName);
}
// List of outbound link elements on the specified item we want to skip. These will be placed into the inbound item
Debug.WriteLine($@"Attempting to skip {elementToSkip.UIndex} in {elementToSkip.FileRef.FilePath}");
var outboundLinkLists = SeqTools.GetOutboundLinksOfNode(elementToSkip);
var inboundToSkippedNode = SeqTools.FindOutboundConnectionsToNode(elementToSkip, SeqTools.GetAllSequenceElements(elementToSkip).OfType <ExportEntry>());
var newTargetNodes = outboundLinkLists[outboundLinkIdx];
foreach (var preNode in inboundToSkippedNode)
{
// For every node that links to the one we want to skip...
var preNodeLinks = GetOutboundLinksOfNode(preNode);
foreach (var ol in preNodeLinks)
{
var numRemoved = ol.RemoveAll(x => x.LinkedOp == elementToSkip);
if (numRemoved > 0)
{
// At least one was removed. Repoint it
ol.AddRange(newTargetNodes);
}
}
WriteOutboundLinksToNode(preNode, preNodeLinks);
}
}