public VisualNode AddMove(int x, int y, TicTacToeValue currentPlayer)
{
string nodeKey = Constants.GetKey(x, y);
if (nodes.ContainsKey(nodeKey))
{
return(null);
}
VisualNode newNode = new VisualNode(x, y, currentPlayer);
nodes.Add(nodeKey, newNode);
return(newNode);
}
private void TraverseBoard(VisualNode node, NodeLocation direction, Action <VisualNode> runAction)
{
// flag all the nodes on the winDirection
var currentNode = nodes[Constants.GetKey(node.X, node.Y)];
TicTacToeValue nodeValue = node.Value;
// traverse all nodes of the same value
while (currentNode.Value == nodeValue)
{
runAction(currentNode);
string nodeKey = Constants.MapDirectionToComputation[direction](currentNode.X, currentNode.Y);
// continue on the direction, if there is anything there.
if (nodes.ContainsKey(nodeKey))
{
currentNode = nodes[nodeKey];
}
else
{
break;
}
}
}
private bool PlaceMove(VisualNode move)
{
if (_game.GameEnded)
{
return false;
}
if (move == null)
{
MessageBox.Show("Cannot place the move there!");
return false;
}
s_moves.Push(move);
tslMoveCount.Text = $"Move: {s_moves.Count}";
Refresh();
NodeLocation winDirection;
if (_game.IsWinningMove(move, out winDirection))
{
_game.GameEnded = true;
// Mark the wining nodes.
_game.MarkWinningNodes(move, winDirection);
Refresh();
#if !COMPUTER_AGAINST_ITSELF
MessageBox.Show($"Winner is player {CurrentPlayer}!!!");
#else
if (CurrentPlayer == TicTacToeValue.x)
winX++;
else
winO++;
if (s_moves.Count > maxMove)
maxMove = s_moves.Count;
if (s_moves.Count < minMove)
minMove = s_moves.Count;
label3.Text = $"X: {winX}, O: {winO}, min:{minMove}, max:{maxMove}";
#endif
_game = new TicTacToeGame(NeededForWin);
s_moves.Clear();
CurrentPlayer = TicTacToeValue.x;
tslMoveCount.Text = "";
Refresh();
#if COMPUTER_AGAINST_ITSELF
PlaceAIMove();
#endif
return true;
}
else
{
ChangePlayer();
#if COMPUTER_AGAINST_ITSELF
PlaceAIMove();
#endif
}
Application.DoEvents();
return false;
}
internal void MarkWinningNodes(VisualNode node, NodeLocation winDirection)
{
// flag all the nodes on that direction so that when they are drawn, you can tell who won.
TraverseBoard(node, winDirection, (n) => n.PartOfWinningMove = true);
TraverseBoard(node, winDirection.GetReverseDirection(), (n) => n.PartOfWinningMove = true);
}