public override int chooseMove(Board b)
{
int move = -1;
string moveString;
while (!b.LegalMove(move))
{
Console.Write("Your move: ");
moveString = Console.ReadLine();
if (!int.TryParse(moveString, out move) || !b.LegalMove(move))
{
Console.WriteLine("Illegal move. Try again.");
}
}
return(move);
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// METHOD SEPARATOR METHOD SEPARATOR METHOD SEPARATOR METHOD SEPARATOR METHOD SEPARATOR METHOD SEPARATOR METHOD SEPARATOR
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// <summary>
/// Method permits the user to choose his or her move.
/// </summary>
/// <param name="b">Game Board object</param>
///
/// <returns>the move the user chose to make</returns>
public override int ChooseMove(Board b)
{
int move = -1;
string moveString;
// Continue asking for a legal move, if illegal.
while (!b.LegalMove(move))
{
Console.Write("Your move: ");
moveString = Console.ReadLine();
// Obtain integer representation of move and store in variable.
if (!int.TryParse(moveString, out move) || !b.LegalMove(move))
{
Console.WriteLine("Illegal move. Try again.");
}
}
return(move);
}
public Tuple <int, double> MiniMax(Board board, int depth, double alpha, double beta)
{
double bestResult = 0;
double result = 0;
int bestMove = 0;
if (board.GameOver() || depth == 0)
{
return(new Tuple <int, double>(0, evaluate(board)));
}
int start = 0;
if (board.WhoseMove() == Position.Top)
{
start = 7;
}
else
{
start = 0;
}
if (board.WhoseMove() == position)
{
bestResult = double.NegativeInfinity;
for (int move = start; move <= start + 5; move++)
{
if (board.LegalMove(move) && timer.ElapsedMilliseconds < getTimePerMove())
{
Board tempBoard = new Board(board); //duplicate board
tempBoard.MakeMove(move, false); //make the move
result = MiniMax(tempBoard, depth - 1, alpha, beta).Item2;
if (result > bestResult) //find its value
{
bestResult = result; //remember if best
bestMove = move;
}
if (bestResult > alpha)
{
alpha = bestResult;
}
if (beta <= alpha)
{
break;
}
}
}
}
else
{
bestResult = double.PositiveInfinity;
for (int move = start; move <= start + 5; move++)
{
if (board.LegalMove(move) && timer.ElapsedMilliseconds < getTimePerMove())
{
Board tempBoard = new Board(board); //duplicate board
tempBoard.MakeMove(move, false); //make the move
result = MiniMax(tempBoard, depth - 1, alpha, beta).Item2;
if (result < bestResult) //find its value
{
bestResult = result; //remember if best
bestMove = move;
}
if (beta < bestResult)
{
beta = bestResult;
}
if (beta <= alpha)
{
break;
}
}
}
}
return(new Tuple <int, double>(bestMove, bestResult));
}
