//выбирает ход для выбранного игрока с глубиной не более maxDeep
public Step SelectMove(Player p, int maxDeep, Board board)
{
Count = 0;
_maxDeep = maxDeep;
_threadsResults.Clear();
var nBoard = new Board(board);
var game = new Game(nBoard);
var moves = game.getAllLegalMoves(p);
var b = moves.Batch(moves.Count/ThreadCount).ToList();
var thraads = new Thread[b.Count];
var n = 0;
foreach (var curMoves in b)
{
var args = new TheadArg
{
board = new Board(board),
startPlayer = p,
steps = curMoves.ToList()
};
var thread = new Thread(Process) {IsBackground = true};
thread.Start(args);
thraads[n++] = thread;
}
while (thraads.Any(x => x.IsAlive))
{
Thread.Sleep(100);
}
var res = _threadsResults.MaxBy(x => x.Score);
return res.Step;
}
//посчитать счет черных (пока не самым оптимальный способ)
static int calculateScoreBlack(Board board, Game game)
{
var sum = 0;
var enemys = new List<Figure>();
foreach (var figure in board.Figures)
{
if (figure != null && figure.Player == Player.White)
enemys.Add(figure);
}
foreach (var figure in board.Figures)
{
if (figure != null && figure.Player == Player.Black)
{
sum += figure.Cost;
var attCount = 0;
for (int i = 0; i < enemys.Count; i++)
{
if (figure.AttackTarget(enemys[i]))
attCount++;
}
sum += (attCount - 1) * ((int)(figure.Cost * 0.3));
if (figure is Queen || figure is Bishop || figure is Knight)
{
if ((figure.X == 4 || figure.X == 5) && (figure.Y == 5 || figure.Y == 4))
sum += (int)(figure.X * 1.2);
}
if (figure is Pawn)
{
}
}
}
var kingAtt = game.KingAlert(Player.Black);
if (kingAtt == 1)
sum -= 400;
else if (kingAtt > 1)
sum -= 800;
return sum;
}
static void Main(string[] args)
{
Process.GetCurrentProcess().PriorityClass = ProcessPriorityClass.High;
var board = new Board();
//Создаем пешек
//for (int i = 0; i < 8; i++)
//{
// new Pawn(Player.White, 1, i);
// new Pawn(Player.Black, 6, i);
//}
//new Rook(Player.White, 0, 0);
//new Rook(Player.Black, 7, 0);
//new Knight(Player.White, 0, 1);
//new Knight(Player.Black, 7, 1);
//new Bishop(Player.White, 0, 2);
//new Bishop(Player.Black, 7, 2);
//new Queen(Player.White, 0, 3);
//new Queen(Player.Black, 7, 3);
//new King(Player.White, 0, 4);
//new King(Player.Black, 7, 4);
//new Bishop(Player.White, 0, 5);
//new Bishop(Player.Black, 7, 5);
//new Knight(Player.White, 0, 6);
//new Knight(Player.Black, 7, 6);
//new Rook(Player.White, 0, 7);
//new Rook(Player.Black, 7, 7);
var g = new Game(board);
var ai = new AI();
var s = State.Calm;
while (s != State.Checkmate)
{
PrintBoard(board.Figures);
Console.WriteLine();
Console.Write("Введите ваш ход({0}): ", g.Player);
Step st;
if (g.Player == Player.White)
{
var step = Console.ReadLine();
st = Step.StringToStep(step);
}
else
{
var tim = new Stopwatch();
tim.Start();
st = ai.SelectMove(g.Player, 6, board);
tim.Stop();
Console.WriteLine(tim.ElapsedMilliseconds);
Console.WriteLine();
}
try
{
g.doMove(st);
s = g.calcState();
}
catch (ErrorStepExveption)
{
Console.WriteLine("Не коректный ход");
}
}
}
private void Process(object obj)
{
var args = obj as TheadArg;
var game = new Game(args.board);
var bMoves = new int[args.steps.Count];
if (args.startPlayer == Player.White)
{
var i = 0;
foreach (var x in args.steps)
{
DoMove(x, args.board);
var res = AlphaBetaBlackWS(int.MinValue, Int32.MaxValue, _maxDeep - 1, game);
BackMove(args.board);
bMoves[i++] = res;
}
}
else
{
var i = 0;
foreach (var x in args.steps)
{
DoMove(x, args.board);
int res = AlphaBetaWhiteBS(int.MinValue, Int32.MaxValue, _maxDeep - 1, game);
BackMove(args.board);
bMoves[i++] = res;
}
}
var max = bMoves.Max();
var arrMoves = args.steps;
var bestSteps = new List<Step>();
for (var i = 0; i < bMoves.Length; i++)
{
if (bMoves[i] == max)
bestSteps.Add(arrMoves[i]);
}
var rand = new Random();
this._threadsResults.Add(new StepWithScore
{
Score = max,
Step = bestSteps[rand.Next() % bestSteps.Count]
});
}
private int AlphaBetaWhiteWS(int alpha, int beta, int depth, Game game)
{
Count++;
var max = Int32.MinValue;
if (depth <= 0) return calculateScoreWhite(game._board, game) - calculateScoreBlack(game._board, game);
var moves = game.getAllLegalMoves(Player.White);
if (moves.Count() != 0)
foreach (var x in moves)
{
DoMove(x, game._board);
var tmp = AlphaBetaBlackWS(alpha, beta, depth - 1, game);
BackMove(game._board);
if (tmp > max) max = tmp;
if (tmp > alpha) alpha = tmp;
if (max >= beta) return max;
}
else
{
var state = game.calcState();
if (state == State.Checkmate)
return 0;
else return -10000;
}
return max;
}
private int AlphaBetaWhiteBS(int alpha, int beta, int depth, Game game)
{
Count++;
var min = Int32.MaxValue;
if (depth <= 0)
{
var state = game.calcState(Player.White);
switch (state)
{
case State.Calm:
return calculateScoreWhite(game._board, game) - calculateScoreBlack(game._board, game);
case State.Check:
return calculateScoreWhite(game._board, game) - calculateScoreBlack(game._board, game) - 300 ;
case State.Checkmate:
return Int32.MinValue;
case State.Draw:
return 0;
}
}
var moves = game.getAllLegalMoves(Player.White);
foreach (var x in moves)
{
DoMove(x, game._board);
var tmp = AlphaBetaBlackBS(alpha, beta, depth - 1, game);
BackMove(game._board);
if (tmp < min) min = tmp;
if (tmp < beta) beta = tmp;
if (min <= alpha) return min;
}
return min;
}
private int AlphaBetaBlackWS(int alpha, int beta, int depth, Game game)
{
Count++;
var min = int.MaxValue;
if (depth <= 0) return calculateScoreBlack(game._board, game) - calculateScoreWhite(game._board, game);
var moves = game.getAllLegalMoves(Player.Black);
if (moves.Count() != 0)
foreach (var x in moves)
{
DoMove(x, game._board);
var tmp = AlphaBetaWhiteWS(alpha, beta, depth - 1, game);
BackMove(game._board);
if (tmp < min) min = tmp;
if (tmp < beta) beta = tmp;
if (min <= alpha) return min;
}
else
{
var state = game.calcState();
return state == State.Checkmate ? 0 : 10000;
}
return min;
}
private int AlphaBetaBlackBS(int alpha, int beta, int depth, Game game)
{
Interlocked.Increment(ref Count);
var max = Int32.MinValue;
if (depth <= 0)
{
var state = game.calcState(Player.White);
switch (state)
{
case State.Calm:
return calculateScoreBlack(game._board, game) - calculateScoreWhite(game._board, game);
case State.Check:
return calculateScoreBlack(game._board, game)- 300-calculateScoreWhite(game._board, game);
case State.Checkmate:
return Int32.MaxValue;
case State.Draw:
return 0;
}
}
var moves = game.getAllLegalMoves(Player.Black);
foreach (var x in moves)
{
DoMove(x, game._board);
var tmp = AlphaBetaWhiteBS(alpha, beta, depth - 1, game);
BackMove(game._board);
if (tmp > max) max = tmp;
if (tmp > alpha) alpha = tmp;
if (max >= beta) return max;
}
return max;
}
