public Dialogue(Yarn.VariableStorage continuity)
{
this.continuity = continuity;
loader = new Loader (this);
library = new Library ();
library.ImportLibrary (new StandardLibrary ());
// Register the "visited" function, which returns true if we've visited
// a node previously (nodes are marked as visited when we leave them)
library.RegisterFunction ("visited", 1, delegate(Yarn.Value[] parameters) {
var name = parameters[0].AsString;
return visitedNodeNames.Contains(name);
});
}