public Stack <Pair <int, int> > TracePath()
{
Stack <Pair <int, int> > path = new Stack <Pair <int, int> >();
int i, j;
i = endPosition.X;
j = endPosition.Y;
while (!pfGrid.HasNoParents(i, j, i, j))
{
path.Push(new Pair <int, int>(i, j));
int tempI = pfGrid.GetIParent(i, j);
int tempJ = pfGrid.GetjParent(i, j);
i = tempI;
j = tempJ;
}
return(path);
}