bool IMessageFilter.PreFilterMessage(ref Message m)
{
if (m.Msg == 0x0200)
{
highlightRight = null;
highlightLeft = null;
var pt = PointToClient(Cursor.Position);
if (!Bounds.Contains(pt))
{
ReleaseMouseAll();
}
else
{
var square = HitTestSquare(pt);
if (square != null)
{
highlightRight = board[GetRight(square)];
highlightLeft = board[GetLeft(square)];
}
}
}
else if (m.Msg == 0x101)
{
Rebuild();
}
return(false);
}
private void Rebuild()
{
var path = new Stack <ButtonSquare>();
board = new ButtonSquare[numButtons];
// pick a random position within the board
int i = random.Next(numButtons);
// assign a value to the button
board[i] = new ButtonSquare
{
Index = i,
Value = NextValue(),
Selected = false,
};
path.Push(board[i]);
int j, d, v;
while (board.Any(b => b == null))
{
do
{
j = random.Next(numButtons);
}while (board[j] != null);
var square = new ButtonSquare
{
Index = j,
Selected = false,
};
board[j] = square;
path.Push(square);
v = 0;
d = (random.Next() % 2 == 0) ? -1 : 1;
while (j != i)
{
j = mod(j + d, numButtons);
++v;
}
square.Value = v;
i = square.Index;
}
path.Peek().Selected = true;
CalculateBounds();
}
private void ClickSquare(ButtonSquare square)
{
UnselectAll();
square.Cleared = true;
SelectSquare(GetLeft(square));
SelectSquare(GetRight(square));
if (!board.Any(b => b.Selected))
{
if (board.All(b => b.Cleared))
{
MessageBox.Show(this, "You win! Press [Space] to start over");
}
else
{
MessageBox.Show(this, "You LOSE! Press [Space] to start over");
}
}
}
private int GetLeft(ButtonSquare square)
{
return(mod(square.Index - square.Value, board.Length));
}
