/// <summary> Activates this graph's first node (either the StartNode or the EnterNode) </summary>
public void ActivateStartOrEnterNode()
{
PreviousActiveNode = null;
ActiveNode = GetStartOrEnterNode();
ActiveNode.SetActiveGraph(this);
ActiveNode.OnEnter(null, null);
// ActivateGlobalNodes();
}
/// <summary> Activate a Node </summary>
/// <param name="nextActiveNode"> Target Node </param>
/// <param name="connection"> Connection to ping (used as a visual cue in the editor) </param>
public void SetActiveNode(Node nextActiveNode, Connection connection = null)
{
if (ActiveNode != null)
{
ActiveNode.OnExit(nextActiveNode, connection);
ActiveNode.SetActiveGraph(null);
}
PreviousActiveNode = ActiveNode;
if (InfiniteLoopDetected(nextActiveNode))
{
throw new OverflowException("Nody detected an Infinite Loop." +
"\n" +
"This loop was detected in the '" + name + "' " + (m_isSubGraph ? "SubGraph" : "Graph") + ", at the '" + nextActiveNode.Name + "' Node. " +
(PreviousActiveNode == null ? "" : "The connection that triggered this exception was between '" + PreviousActiveNode.Name + "' --and--> '" + nextActiveNode.Name + "' Nodes. ") +
"This issue happened because the sockets are connected in such a manner that a closed infinite loop was created. " +
"Please redesign the current UI flow to and from the '" + nextActiveNode.Name + "' Node, because Nody cannot automatically do that for you. " +
"Look at how the '" + nextActiveNode.Name + "' Node is connected to other nodes and try to follow the UI flow in order to understand where the infinite loop happens. " +
"If this exception were not in place, the Unity Editor would freeze, then you would have had to close it by force and lose any unsaved changes in the process." +
"\n");
}
ActiveNode = nextActiveNode;
if (ActiveNode == null)
{
return;
}
if (ActiveNode.NodeType == NodeType.Exit)
{
DeactivateGlobalNodes(); //if the ActiveNode is an Exit Node -> then this means that this is a SubGraph that just finished it's cycle -> stop all of its GlobalNodes
}
ActiveNode.SetActiveGraph(this);
ActiveNode.OnEnter(PreviousActiveNode, connection);
}
