private bool Ydirect(Grid start, Grid end, LinkedList path)
{
if (start.GetXpos() != end.GetXpos())
{
return false;
}
int direct = 1;
if (start.GetYpos() > end.GetYpos())
{
direct = -1;
}
path.Clear();
for (int y = start.GetYpos() + direct; y != end.GetYpos() && y < yBound
&& y >= 0; y += direct)
{
if (grid[y][start.GetXpos()].IsVisible())
{
return false;
}
path.Add(grid[y][start.GetXpos()]);
}
path.Add(end);
return true;
}
private void DeletePair(Grid prev, Grid current)
{
LinkedList temp = new LinkedList();
temp.Add(prev);
for (int i = 0; i < pcount; i++)
{
temp.AddAll(path[i]);
path[i].Clear();
}
AnimateThread thread = new AnimateThread(temp);
thread.Tag = this;
thread.Start();
}
private bool Xdirect(Grid start, Grid end, LinkedList path)
{
if (start.GetYpos() != end.GetYpos())
return false;
int direct = 1;
if (start.GetXpos() > end.GetXpos())
{
direct = -1;
}
path.Clear();
for (int x = start.GetXpos() + direct; x != end.GetXpos() && x < xBound
&& x >= 0; x += direct)
{
if (grid[start.GetYpos()][x].IsVisible())
{
return false;
}
path.Add(grid[start.GetYpos()][x]);
}
path.Add(end);
return true;
}