private void TryAddLink()
{
// A link be between exactly two polygons.
if (_intersectedEdges.Count != 2)
{
return;
}
// A polygon can't connect with itself
if (_intersectedEdges[0].Polygon == _intersectedEdges[1].Polygon)
{
return;
}
// Can make a connection.
PolygonLink polyLink = new PolygonLink(
_intersectedEdges[0].Polygon,
_intersectedEdges[0].Edge,
_intersectedEdges[1].Polygon,
_intersectedEdges[1].Edge);
_navMesh.AddLink(polyLink);
}
/// <summary>
/// This function will look up the polygon index right away.
/// This could potentially cause problems if the XML has the polygon defs later in the file.
/// The values should really be cached and it should be done after.
/// (or thrown in a closure but the C# syntax is a little too messy for that)
/// </summary>
/// <param name="xmlReader"></param>
/// <param name="navMesh"></param>
private static void LoadSingleLink(XmlTextReader xmlReader, NavMesh navMesh)
{
int startPolygonIndex = -1;
int startEdgeStart = -1;
int startEdgeEnd = -1;
int endPolygonIndex = -1;
int endEdgeStart = -1;
int endEdgeEnd = -1;
xmlReader.MoveToContent();
while (xmlReader.Read())
{
if ("start" == xmlReader.Name)
{
startPolygonIndex = int.Parse(xmlReader.GetAttribute("polygon"));
startEdgeStart = int.Parse(xmlReader.GetAttribute("edgestart"));
startEdgeEnd = int.Parse(xmlReader.GetAttribute("edgeend"));
}
else if ("end" == xmlReader.Name)
{
endPolygonIndex = int.Parse(xmlReader.GetAttribute("polygon"));
endEdgeStart = int.Parse(xmlReader.GetAttribute("edgestart"));
endEdgeEnd = int.Parse(xmlReader.GetAttribute("edgeend"));
}
else if ("link" == xmlReader.Name)
{
PolygonLink polygonLink = new PolygonLink(
navMesh.PolygonList[startPolygonIndex],
new IndexedEdge(startEdgeStart, startEdgeEnd),
navMesh.PolygonList[endPolygonIndex],
new IndexedEdge(endEdgeStart, endEdgeEnd));
navMesh.AddLink(polygonLink);
return;
}
}
}
public void AddLink(PolygonLink link)
{
_links.Add(link);
}
public void AddLink(PolygonLink link)
{
_links.Add(link);
}