/// <summary>
/// Raises mouse down event
/// </summary>
/// <param name="e">The mouse event args</param>
protected override void OnMouseDown(MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
int position = GetPosition(e.Location);
if (position > 0)
{
Piece piece = board[position];
if (!gameStarted)
{
Player humanPlayer = BoardUtilities.GetPlayer(piece);
Player computerPlayer = BoardUtilities.GetOpponent(humanPlayer);
presenter.SetComputer(humanPlayer, false);
presenter.SetComputer(computerPlayer, true);
presenter.StartGame();
}
bool locked = ((blackLocked && BoardUtilities.IsBlack(piece)) || (whiteLocked && BoardUtilities.IsWhite(piece)));
if ((!locked) && (piece != Piece.None))
{
int offset = SquareSize / 2;
floatingPiece.X = e.X - offset;
floatingPiece.Y = e.Y - offset;
floatingPiece.Position = position;
Cursor = GrabCursor;
this.RefreshBoard();
}
System.Diagnostics.Trace.WriteLine(string.Format(CultureInfo.InvariantCulture, "clicked: {0}, piece={1}", position, piece));
}
}
base.OnMouseClick(e);
}
private void GameStep(int? startPosition)
{
if (!boardRules.IsGameOver(board, turn.Player))
{
view.LockPlayer(Player.Black, true);
view.LockPlayer(Player.White, true);
view.ShowPlayerChange(turn.Player);
this.PromptMove(startPosition);
}
else
{
this.OnGameOver(BoardUtilities.GetOpponent(turn.Player), turn.Player);
}
}
//TODO:
private int MiniMax(ref Move bestMove, IBoard board, Player player, int ply, int depth, TimeSpan timeout, DateTime startTime)
{
if (depth <= 0)
{
// reached ply level
// достиг уровня слоя
return(Evaluate(board, player));
}
else if (forceMove)
{
return(int.MinValue);
}
ICollection <Move> moves = CheckerMoveRules.GetAvailableMoves(board, player);
if ((moves == null) || (moves.Count == 0))
{
// reached leaf
// достиг листа
return(Evaluate(board, player));
}
int bestScore = int.MinValue;
Player opponent = BoardUtilities.GetOpponent(player);
IBoard boardCopy = board.Copy();
foreach (Move move in moves)
{
CheckerMoveRules.UpdateBoard(boardCopy, move);
int score = -MiniMax(ref bestMove, boardCopy, opponent, ply, depth - 1, timeout, startTime);
boardCopy.Copy(board);// undo move //отменить движение
if (depth == ply)
{
System.Diagnostics.Trace.WriteLine(string.Format(CultureInfo.InvariantCulture, "Move: {0}. Score: {1}", move, score.ToString(CultureInfo.InvariantCulture)));
if ((bestMove == null) || (score > bestScore))
{
bestMove = move;
}
}
bestScore = Math.Max(bestScore, score);
}
return(bestScore);
}
