private static void InitSingleplayer(OthelloGame game, Queue <string> moveSequence, Queue <char[, ]> boardStates)
{
char playerColor = '\0', aiColor = '\0';
string userInput;
bool validInput = false;
OthelloAI ai = null;
// loop until user gives a valid color selection
while (!validInput)
{
Console.Clear();
Console.Write("Pick the human player color (B/W): ");
userInput = Console.ReadLine();
// if users input matches one of the selection options, assign colors
if (userInput.Length == 1 && Regex.IsMatch(userInput, "[BbWw]"))
{
// if human chose black, assign human black color and ai white color
if (Regex.IsMatch(userInput, "[Bb]"))
{
// initialize colors
playerColor = '@';
aiColor = 'O';
// initialize AI
ai = new OthelloAI(game, false);
moveSequence.Enqueue("Human Player: Black\nAI: White");
}
else // if human chose white, do the reverse
{
// initialize colors
playerColor = 'O';
aiColor = '@';
// initialize AI
ai = new OthelloAI(game, true);
moveSequence.Enqueue("Human Player: White\nAI: Black");
}
validInput = true;
}
else
{
Console.WriteLine("Entered color selection was invalid, please try again.\nPress enter to continue...");
Console.ReadLine();
}
}
Console.WriteLine("Player pieces are: " + playerColor + "\nAI pieces are: " + aiColor + "\nPress enter to begin...");
Console.ReadLine();
bool playerIsBlack = playerColor == '@';
PlaySingleplayer(game, ai, moveSequence, boardStates, playerIsBlack);
}
private static void PlaySingleplayer(OthelloGame game, OthelloAI ai, Queue <string> moveSequence, Queue <char[, ]> boardStates, bool playerIsBlack)
{
string userInput;
// begin gameplay
game.ResetBoard();
// bool tracks whether player entered move or a command such as toggling alpha-beta
bool validMoveEntered;
// game loops until neither black nor white have remaining moves
bool blackHasMoves; // cache result of game.HasLegalMoves('B') to avoid recomputation
while ((blackHasMoves = game.HasLegalMoves('@')) && game.HasLegalMoves('O'))
{
// execution instructions for when player is black
if (playerIsBlack)
{
if (blackHasMoves)
{
// loop until black player enters a legal move
do
{
game.PrintBoard();
Console.WriteLine("Enter move as ColRow, -1 to toggle Alpha-Beta Pruning, or -2 to toggle debug mode");
Console.Write("\nBlack, enter your selection: ");
userInput = Console.ReadLine();
switch (userInput)
{
case "-1":
ai.ToggleAlphaBeta();
validMoveEntered = false;
Console.WriteLine($"Alpha-Beta Active is now {ai.AlphaBetaActive}\nPress enter to continue...");
Console.ReadLine();
break;
case "-2":
DEBUG_MODE = !DEBUG_MODE;
validMoveEntered = false;
Console.WriteLine($"Debug mode is now {DEBUG_MODE}\nPress enter to continue...");
Console.ReadLine();
break;
default:
validMoveEntered = game.PlayMove(userInput);
break;
}
} while (!validMoveEntered);
moveSequence.Enqueue("Black: " + userInput.ToUpper());
boardStates.Enqueue((char[, ])game.BoardState.Clone());
}
else
{
Console.WriteLine("Black has no moves. Press enter to pass...");
Console.ReadLine();
game.PassMove();
}
// wait for user to let ai move
game.PrintBoard();
Console.WriteLine("White's turn");
if (game.HasLegalMoves('O'))
{
int[] aiMove = ai.ChooseMove();
game.PlayMove(aiMove);
string aiMoveFormatted = FormatAIMove(aiMove);
moveSequence.Enqueue("White: " + aiMoveFormatted);
boardStates.Enqueue((char[, ])game.BoardState.Clone());
}
else
{
Console.WriteLine("White has no moves. Press enter to pass...");
Console.ReadLine();
game.PassMove();
}
}
else // execution instructions for when player is white
{
// wait for user to let ai move
game.PrintBoard();
Console.WriteLine("Black's turn");
if (blackHasMoves)
{
int[] aiMove = ai.ChooseMove();
game.PlayMove(aiMove);
string aiMoveFormatted = FormatAIMove(aiMove);
moveSequence.Enqueue("Black: " + aiMoveFormatted);
boardStates.Enqueue((char[, ])game.BoardState.Clone());
}
else
{
Console.WriteLine("Black has no moves. Press enter to pass...");
Console.ReadLine();
game.PassMove();
}
if (game.HasLegalMoves('O'))
{
// loop until white player enters a legal move
do
{
game.PrintBoard();
Console.WriteLine("Enter move as ColRow, -1 to toggle Alpha-Beta Pruning, or -2 to toggle debug mode");
Console.Write("\nWhite, enter your move/selection: ");
userInput = Console.ReadLine();
switch (userInput)
{
case "-1":
ai.ToggleAlphaBeta();
validMoveEntered = false;
Console.WriteLine($"Alpha-Beta Active is now {ai.AlphaBetaActive}\nPress enter to continue...");
Console.ReadLine();
break;
case "-2":
DEBUG_MODE = !DEBUG_MODE;
validMoveEntered = false;
Console.WriteLine($"Debug mode is now {DEBUG_MODE}\nPress enter to continue...");
Console.ReadLine();
break;
default:
validMoveEntered = game.PlayMove(userInput);
break;
}
} while (!validMoveEntered);
moveSequence.Enqueue("White: " + userInput.ToUpper());
boardStates.Enqueue((char[, ])game.BoardState.Clone());
}
else
{
Console.WriteLine("White has no moves. Press enter to pass...");
Console.ReadLine();
game.PassMove();
}
}
}
Console.WriteLine("There are no more legal moves. Press enter to continue...");
Console.ReadLine();
// score game
int blackScore = 0, whiteScore = 0;
foreach (char piece in game.BoardState)
{
if (piece == '@')
{
blackScore++;
}
else if (piece == 'O')
{
whiteScore++;
}
}
// declare winner
if (blackScore > whiteScore)
{
Console.WriteLine("Black Wins!");
}
else if (whiteScore > blackScore)
{
Console.WriteLine("White Wins!");
}
else
{
Console.WriteLine("Game Tied!");
}
Console.WriteLine($"Black Score: {blackScore}\nWhite Score: {whiteScore}");
moveSequence.Enqueue($"Final Score:\nBlack Score: {blackScore}\nWhite Score: {whiteScore}");
Console.WriteLine("Press enter to continue...");
Console.ReadLine();
}
public OthelloComputer(int color, int depth) : base(color)
{
ai = new OthelloAI(depth, color);
}
