如何防止玩家在井字游戏中互相覆盖？
How can I prevent players from overwriting one another in tic tac toe?
我尝试用 C# 编写一个井字游戏（在教程的帮助下）。总的来说它似乎工作正常（虽然代码量似乎非常多，对此感到抱歉）但似乎有一个问题：比如说，玩家 1 决定第 1 行，第 1 列，然后玩家 2 做同样的事情，然后玩家2 覆盖播放器 1。
到目前为止，这是代码：
namespace TicTacToe
{
class Program
{
static int turns = 1;
static char[] board =
{
' ',' ',' ',' ',' ',' ',' ',' ',' '
};
static char playerSignature = 'X';
private static void Introduction()
{
Console.WriteLine("This is a simple TicTacToe game. Enter y if you have played before and n if you are new to this.");
string input1 = Console.ReadLine();
Console.Clear();
if (input1 == "n")
{
Console.WriteLine("TicTacToeRules:");
Console.WriteLine("1. The game is played on a grid that's 3 squares by 3 squares.");
Console.WriteLine("2. You are X, your friend is O. Players take turns putting their marks in empty squares.");
Console.WriteLine("3. The first player to get 3 of her marks in a row (up, down, across, or diagonally) is the winner.");
Console.WriteLine("4. When all 9 squares are full, the game is over.");
Console.WriteLine("If you have read the rules, press any key to continue.");
Console.ReadKey();
Console.Clear();
DrawBoard(board);
}
else
{
Console.WriteLine("Alright, let's get started, you are X, your friend is O.");
DrawBoard(board);
}
}
private static void PlayAgain()
{
Console.WriteLine("Play again? y/n");
string playagain = Console.ReadLine();
switch (playagain)
{
case "n":
Console.WriteLine("Thanks for playing!");
Console.Clear();
break;
case "y":
Console.Clear();
ResetBoard();
break;
}
}
private static void DrawBoard(char[] board)
{
string row = "| {0} | {1} | {2} |";
string sep = "|___|___|___|";
Console.WriteLine(" ___ ___ ___ ");
Console.WriteLine(row, board[0], board[1], board[2]);
Console.WriteLine(sep);
Console.WriteLine(row, board[3], board[4], board[5]);
Console.WriteLine(sep);
Console.WriteLine(row, board[6], board[7], board[8]);
Console.WriteLine(sep);
}
private static void ResetBoard()
{
char[] newBoard =
{
' ',' ',' ',' ',' ',' ',' ',' ',' '
};
board = newBoard;
DrawBoard(board);
turns = 0;
}
private static void Draw()
{
Console.WriteLine("It's a draw!\n" +
"Press any key to play again.");
Console.ReadKey();
ResetBoard();
//DrawBoard(board);
}
public static void Main()
{
Introduction();
while(true)
{
bool isrow = false;
bool iscol = false;
int row = 0;
int col = 0;
while (!isrow)
{
Console.WriteLine("Choose a row (1-3): ");
try
{
row = Convert.ToInt32(Console.ReadLine());
}
catch
{
Console.WriteLine("Please enter a number between 1 and 3.");
}
if (row == 1 || row == 2 || row == 3)
{
isrow = true;
}
else
{
Console.WriteLine("\nInvalid row!");
}
}
while (!iscol)
{
Console.WriteLine("Choose a column (1-3): ");
try
{
col = Convert.ToInt32(Console.ReadLine());
}
catch
{
Console.WriteLine("Please enter a number between 1 and 3.");
}
if (col == 1 || col == 2 || col == 3)
{
iscol = true;
}
else
{
Console.WriteLine("\nInvalid column!");
}
}
int[] input = { row, col };
int player = 2;
if (player == 2)
{
player = 1;
XorO(player, input);
}
else
{
player = 2;
XorO(player, input);
}
DrawBoard(board);
turns++;
CheckForDiagonal();
CheckForVertical();
CheckForHorizontal();
if (turns == 10 && (board[0] == playerSignature && board[1] == playerSignature && board[2] == playerSignature && board[3] == playerSignature &&
board[4] == playerSignature && board[5] == playerSignature && board[6] == playerSignature && board[7] == playerSignature && board[8] == playerSignature))
{
Draw();
}
}
}
private static void CheckForVertical()
{
char[] PlayerSignature = { 'O', 'X' };
foreach (char Signature in PlayerSignature)
{
if (board[0] == playerSignature && board[3] == playerSignature && board[6] == playerSignature ||
board[1] == playerSignature && board[4] == playerSignature && board[7] == playerSignature ||
board[2] == playerSignature && board[5] == playerSignature && board[8] == playerSignature)
{
if (playerSignature == 'X')
{
Console.WriteLine("Congratulations Player 1, that's a vertical win!\n" +
"Play again (y/n)?");
string playagain = Console.ReadLine();
if (playagain == "y")
{
Console.Clear();
ResetBoard();
turns = 0;
}
else
{
Console.Clear();
}
}
else
{
Console.WriteLine("Congratulations Player 2, that's a vertical win!\n" +
"Play again (y/n)?");
string playagain = Console.ReadLine();
if (playagain == "y")
{
Console.Clear();
ResetBoard();
turns = 0;
}
else
{
Console.Clear();
}
}
}
}
}
private static void CheckForHorizontal()
{
char[] PlayerSignature = { 'O', 'X' };
foreach (char Signature in PlayerSignature)
{
if (board[0] == playerSignature && board[1] == playerSignature && board[2] == playerSignature ||
board[3] == playerSignature && board[4] == playerSignature && board[5] == playerSignature ||
board[6] == playerSignature && board[7] == playerSignature && board[8] == playerSignature)
{
if (playerSignature == 'X')
{
Console.WriteLine("Congratulations Player 1, that's a horizontal win!\n" +
"Play again (y/n)?");
string playagain = Console.ReadLine();
if (playagain == "y")
{
Console.Clear();
ResetBoard();
turns = 0;
}
else
{
Console.Clear();
}
}
else
{
Console.WriteLine("Congratulations Player 2, that's a horizontal win!\n" +
"Play again (y/n)?");
string playagain = Console.ReadLine();
if (playagain == "y")
{
Console.Clear();
ResetBoard();
turns = 0;
}
else
{
Console.Clear();
}
}
}
}
}
private static void CheckForDiagonal()
{
char[] PlayerSignature = { 'O', 'X' };
foreach (char Signature in PlayerSignature)
{
if (board[6] == playerSignature && board[4] == playerSignature && board[2] == playerSignature ||
board[0] == playerSignature && board[4] == playerSignature && board[8] == playerSignature)
{
if (playerSignature == 'X')
{
Console.WriteLine("Congratulations Player 1, that's a diagonal win!\n" +
"Play again (y/n)?");
string playagain = Console.ReadLine();
if (playagain == "y")
{
Console.Clear();
ResetBoard();
turns = 0;
}
else
{
Console.Clear();
}
}
else
{
Console.WriteLine("Congratulations Player 2, that's a diagonal win!\n" +
"Play again (y/n)?");
string playagain = Console.ReadLine();
if (playagain == "y")
{
Console.Clear();
ResetBoard();
turns = 0;
}
else
{
Console.Clear();
}
}
}
}
}
private static void XorO(int player, int[] input)
{
if (player == 1)
{
playerSignature = 'X';
}
else if (player == 2)
{
playerSignature = 'O';
}
if (input[0] == 1 && input[1] == 1)
{
board[0] = playerSignature;
}
else if (input[0] == 1 && input[1] == 2)
{
board[1] = playerSignature;
}
else if (input[0] == 1 && input[1] == 3)
{
board[2] = playerSignature;
}
else if (input[0] == 2 && input[1] == 1)
{
board[3] = playerSignature;
}
else if (input[0] == 2 && input[1] == 2)
{
board[4] = playerSignature;
}
else if (input[0] == 2 && input[1] == 3)
{
board[5] = playerSignature;
}
else if (input[0] == 3 && input[1] == 1)
{
board[6] = playerSignature;
}
else if (input[0] == 3 && input[1] == 2)
{
board[7] = playerSignature;
}
else if (input[0] == 3 && input[1] == 3)
{
board[8] = playerSignature;
}
}
}
}
我试过添加这样的东西：if(input[0] == 1 && input[1] == 1 && (board[0] != 'X' && board[0] != 'O') 在 XorO 方法中。但这并没有解决我的问题。
有人可能对我如何解决这个问题有一些建议吗？
您在其中一些方法中做的工作太多了...
例如，这里有一个较短的 XorO() 方法，它还可以确保在分配给玩家之前该位置是空白的：
private static void XorO(int player, int[] input)
{
playerSignature = (player == 1) ? 'X' : 'O';
int index = ((input[0] - 1) * 3) + (input[1] - 1);
if (board[index] == ' ') {
board[index] = playerSignature;
}
else {
// ... output an error message? ...
Console.WriteLine("That spot is already taken!");
}
}
Could you maybe explain why you set index the way you did?
好的！下面是棋盘的布局，3行3列，每个位置对应的Index值：
1 2 3
1 0 1 2
2 3 4 5
3 6 7 8
请注意，因为有 3 列，当我们在同一列中从一行向下移动到下一行时，索引的值会增加 3。另请注意，每行的第 1 列中的起始值为0、3、6，它们都是3的倍数。所以要把你的行值从1、2、3转换成0、3、6，我们先把行值减1，然后乘以3。
接下来，当您向右移动时，每一列只会递增 1。因此，我们从列值中减去一个并将其添加到计算的起始行值。这会将 (row, col) 映射到索引 0 到 8，此处视为一维数组：
1,1 | 1,2 | 1,3 | 2,1 | 2,2 | 2,3 | 3,1 | 3,2 | 3,3
0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8
But how was am I supposed to think of something like that? I would
never have thought of that.
在称为 compact layout 的一维数组中表示二维结构是一种相当常见的设置。将 row/column 转换为等效索引值（反之亦然）所涉及的数学只是所有程序员在某个时候学习的东西。
这里有很多重构，仔细看：
class Program
{
static int turns;
static char[] board;
static bool playerOne;
public static void Main(string[] args)
{
Introduction();
bool playAgain = true;
while (playAgain)
{
ResetBoard();
bool gameOver = false;
while (!gameOver)
{
DrawBoard(board);
int row = getNumber(true);
int col = getNumber(false);
if (XorO(row, col)) {
turns++; // valid move was made
String msg = "";
String playerNumber = playerOne ? "1" : "2";
if (CheckForDiagonal())
{
gameOver = true;
msg = "Congratulations Player " + playerNumber + ", that's a diagonal win!";
}
else if (CheckForVertical())
{
gameOver = true;
msg = "Congratulations Player " + playerNumber + ", that's a vertical win!";
}
else if (CheckForHorizontal())
{
gameOver = true;
msg = "Congratulations Player " + playerNumber + ", that's a horizontal win!";
}
else if (turns == 9)
{
gameOver = true;
msg = "It's a draw!";
}
else
{
playerOne = !playerOne;
}
if (gameOver)
{
DrawBoard(board); // show last move
Console.WriteLine(msg);
}
}
}
Console.WriteLine("Play again (y/n)?");
string response = Console.ReadLine().ToLower();
playAgain = (response == "y");
}
}
private static void ResetBoard()
{
turns = 0;
playerOne = true;
board = new char[] {
' ',' ',' ',' ',' ',' ',' ',' ',' '
};
}
private static void Introduction()
{
Console.WriteLine("This is a simple TicTacToe game.\nEnter y if you have played before and n if you are new to this.");
string input1 = Console.ReadLine().ToLower();
Console.Clear();
if (input1 == "n")
{
Console.WriteLine("TicTacToeRules:");
Console.WriteLine("1. The game is played on a grid that's 3 squares by 3 squares.");
Console.WriteLine("2. You are X, your friend is O. Players take turns putting their marks in empty squares.");
Console.WriteLine("3. The first player to get 3 of her marks in a row (up, down, across, or diagonally) is the winner.");
Console.WriteLine("4. When all 9 squares are full, the game is over.");
Console.WriteLine("If you have read the rules, press any key to continue.");
Console.ReadKey();
Console.Clear();
}
else
{
Console.WriteLine("Alright, let's get started, you are X, your friend is O.");
}
}
private static void DrawBoard(char[] board)
{
Console.WriteLine(" ___ ___ ___ ");
for(int r=1; r<=3;r++)
{
Console.Write("|");
for(int c=1; c<=3; c++)
{
Console.Write(" {0} |", board[(r - 1) * 3 + (c - 1)]);
}
Console.WriteLine();
Console.WriteLine("|___|___|___|");
}
}
private static int getNumber(bool row)
{
int value = -1;
string description = row ? "row" : "column";
bool isValid = false;
while (!isValid)
{
Console.Write("Player '" + (playerOne ? "X" : "O") + "', choose a " + description + " (1-3): ");
if (int.TryParse(Console.ReadLine(), out value))
{
if (value >= 1 && value <= 3)
{
isValid = true;
}
else
{
Console.WriteLine("Please enter a number between 1 and 3.");
}
}
else
{
Console.WriteLine("\nInvalid " + description + "!");
}
}
return value;
}
private static bool XorO(int row, int col)
{
int index = ((row - 1) * 3) + (col - 1);
if (board[index] == ' ')
{
board[index] = playerOne ? 'X' : 'O';
return true;
}
else
{
Console.WriteLine("That spot is already taken!");
return false;
}
}
private static bool CheckForDiagonal()
{
return ((board[6] != ' ' && board[4] == board[6] && board[2] == board[6]) ||
(board[0] != ' ' && board[4] == board[0] && board[8] == board[0]));
}
private static bool CheckForVertical()
{
for(int c=0; c<=2; c++)
{
if (board[c] != ' ' && board[c+3] == board[c] && board[c+6] == board[c])
{
return true;
}
}
return false;
}
private static bool CheckForHorizontal()
{
for (int r=0; r<=6; r=r+3)
{
if (board[r] != ' ' && board[r + 1] == board[r] && board[r + 2] == board[r])
{
return true;
}
}
return false;
}
}
我尝试用 C# 编写一个井字游戏（在教程的帮助下）。总的来说它似乎工作正常（虽然代码量似乎非常多，对此感到抱歉）但似乎有一个问题：比如说，玩家 1 决定第 1 行，第 1 列，然后玩家 2 做同样的事情，然后玩家2 覆盖播放器 1。 到目前为止，这是代码：
namespace TicTacToe
{
class Program
{
static int turns = 1;
static char[] board =
{
' ',' ',' ',' ',' ',' ',' ',' ',' '
};
static char playerSignature = 'X';
private static void Introduction()
{
Console.WriteLine("This is a simple TicTacToe game. Enter y if you have played before and n if you are new to this.");
string input1 = Console.ReadLine();
Console.Clear();
if (input1 == "n")
{
Console.WriteLine("TicTacToeRules:");
Console.WriteLine("1. The game is played on a grid that's 3 squares by 3 squares.");
Console.WriteLine("2. You are X, your friend is O. Players take turns putting their marks in empty squares.");
Console.WriteLine("3. The first player to get 3 of her marks in a row (up, down, across, or diagonally) is the winner.");
Console.WriteLine("4. When all 9 squares are full, the game is over.");
Console.WriteLine("If you have read the rules, press any key to continue.");
Console.ReadKey();
Console.Clear();
DrawBoard(board);
}
else
{
Console.WriteLine("Alright, let's get started, you are X, your friend is O.");
DrawBoard(board);
}
}
private static void PlayAgain()
{
Console.WriteLine("Play again? y/n");
string playagain = Console.ReadLine();
switch (playagain)
{
case "n":
Console.WriteLine("Thanks for playing!");
Console.Clear();
break;
case "y":
Console.Clear();
ResetBoard();
break;
}
}
private static void DrawBoard(char[] board)
{
string row = "| {0} | {1} | {2} |";
string sep = "|___|___|___|";
Console.WriteLine(" ___ ___ ___ ");
Console.WriteLine(row, board[0], board[1], board[2]);
Console.WriteLine(sep);
Console.WriteLine(row, board[3], board[4], board[5]);
Console.WriteLine(sep);
Console.WriteLine(row, board[6], board[7], board[8]);
Console.WriteLine(sep);
}
private static void ResetBoard()
{
char[] newBoard =
{
' ',' ',' ',' ',' ',' ',' ',' ',' '
};
board = newBoard;
DrawBoard(board);
turns = 0;
}
private static void Draw()
{
Console.WriteLine("It's a draw!\n" +
"Press any key to play again.");
Console.ReadKey();
ResetBoard();
//DrawBoard(board);
}
public static void Main()
{
Introduction();
while(true)
{
bool isrow = false;
bool iscol = false;
int row = 0;
int col = 0;
while (!isrow)
{
Console.WriteLine("Choose a row (1-3): ");
try
{
row = Convert.ToInt32(Console.ReadLine());
}
catch
{
Console.WriteLine("Please enter a number between 1 and 3.");
}
if (row == 1 || row == 2 || row == 3)
{
isrow = true;
}
else
{
Console.WriteLine("\nInvalid row!");
}
}
while (!iscol)
{
Console.WriteLine("Choose a column (1-3): ");
try
{
col = Convert.ToInt32(Console.ReadLine());
}
catch
{
Console.WriteLine("Please enter a number between 1 and 3.");
}
if (col == 1 || col == 2 || col == 3)
{
iscol = true;
}
else
{
Console.WriteLine("\nInvalid column!");
}
}
int[] input = { row, col };
int player = 2;
if (player == 2)
{
player = 1;
XorO(player, input);
}
else
{
player = 2;
XorO(player, input);
}
DrawBoard(board);
turns++;
CheckForDiagonal();
CheckForVertical();
CheckForHorizontal();
if (turns == 10 && (board[0] == playerSignature && board[1] == playerSignature && board[2] == playerSignature && board[3] == playerSignature &&
board[4] == playerSignature && board[5] == playerSignature && board[6] == playerSignature && board[7] == playerSignature && board[8] == playerSignature))
{
Draw();
}
}
}
private static void CheckForVertical()
{
char[] PlayerSignature = { 'O', 'X' };
foreach (char Signature in PlayerSignature)
{
if (board[0] == playerSignature && board[3] == playerSignature && board[6] == playerSignature ||
board[1] == playerSignature && board[4] == playerSignature && board[7] == playerSignature ||
board[2] == playerSignature && board[5] == playerSignature && board[8] == playerSignature)
{
if (playerSignature == 'X')
{
Console.WriteLine("Congratulations Player 1, that's a vertical win!\n" +
"Play again (y/n)?");
string playagain = Console.ReadLine();
if (playagain == "y")
{
Console.Clear();
ResetBoard();
turns = 0;
}
else
{
Console.Clear();
}
}
else
{
Console.WriteLine("Congratulations Player 2, that's a vertical win!\n" +
"Play again (y/n)?");
string playagain = Console.ReadLine();
if (playagain == "y")
{
Console.Clear();
ResetBoard();
turns = 0;
}
else
{
Console.Clear();
}
}
}
}
}
private static void CheckForHorizontal()
{
char[] PlayerSignature = { 'O', 'X' };
foreach (char Signature in PlayerSignature)
{
if (board[0] == playerSignature && board[1] == playerSignature && board[2] == playerSignature ||
board[3] == playerSignature && board[4] == playerSignature && board[5] == playerSignature ||
board[6] == playerSignature && board[7] == playerSignature && board[8] == playerSignature)
{
if (playerSignature == 'X')
{
Console.WriteLine("Congratulations Player 1, that's a horizontal win!\n" +
"Play again (y/n)?");
string playagain = Console.ReadLine();
if (playagain == "y")
{
Console.Clear();
ResetBoard();
turns = 0;
}
else
{
Console.Clear();
}
}
else
{
Console.WriteLine("Congratulations Player 2, that's a horizontal win!\n" +
"Play again (y/n)?");
string playagain = Console.ReadLine();
if (playagain == "y")
{
Console.Clear();
ResetBoard();
turns = 0;
}
else
{
Console.Clear();
}
}
}
}
}
private static void CheckForDiagonal()
{
char[] PlayerSignature = { 'O', 'X' };
foreach (char Signature in PlayerSignature)
{
if (board[6] == playerSignature && board[4] == playerSignature && board[2] == playerSignature ||
board[0] == playerSignature && board[4] == playerSignature && board[8] == playerSignature)
{
if (playerSignature == 'X')
{
Console.WriteLine("Congratulations Player 1, that's a diagonal win!\n" +
"Play again (y/n)?");
string playagain = Console.ReadLine();
if (playagain == "y")
{
Console.Clear();
ResetBoard();
turns = 0;
}
else
{
Console.Clear();
}
}
else
{
Console.WriteLine("Congratulations Player 2, that's a diagonal win!\n" +
"Play again (y/n)?");
string playagain = Console.ReadLine();
if (playagain == "y")
{
Console.Clear();
ResetBoard();
turns = 0;
}
else
{
Console.Clear();
}
}
}
}
}
private static void XorO(int player, int[] input)
{
if (player == 1)
{
playerSignature = 'X';
}
else if (player == 2)
{
playerSignature = 'O';
}
if (input[0] == 1 && input[1] == 1)
{
board[0] = playerSignature;
}
else if (input[0] == 1 && input[1] == 2)
{
board[1] = playerSignature;
}
else if (input[0] == 1 && input[1] == 3)
{
board[2] = playerSignature;
}
else if (input[0] == 2 && input[1] == 1)
{
board[3] = playerSignature;
}
else if (input[0] == 2 && input[1] == 2)
{
board[4] = playerSignature;
}
else if (input[0] == 2 && input[1] == 3)
{
board[5] = playerSignature;
}
else if (input[0] == 3 && input[1] == 1)
{
board[6] = playerSignature;
}
else if (input[0] == 3 && input[1] == 2)
{
board[7] = playerSignature;
}
else if (input[0] == 3 && input[1] == 3)
{
board[8] = playerSignature;
}
}
}
}
我试过添加这样的东西：if(input[0] == 1 && input[1] == 1 && (board[0] != 'X' && board[0] != 'O') 在 XorO 方法中。但这并没有解决我的问题。
有人可能对我如何解决这个问题有一些建议吗？
您在其中一些方法中做的工作太多了...
例如，这里有一个较短的 XorO() 方法，它还可以确保在分配给玩家之前该位置是空白的：
private static void XorO(int player, int[] input)
{
playerSignature = (player == 1) ? 'X' : 'O';
int index = ((input[0] - 1) * 3) + (input[1] - 1);
if (board[index] == ' ') {
board[index] = playerSignature;
}
else {
// ... output an error message? ...
Console.WriteLine("That spot is already taken!");
}
}
Could you maybe explain why you set index the way you did?
好的！下面是棋盘的布局，3行3列，每个位置对应的Index值：
1 2 3
1 0 1 2
2 3 4 5
3 6 7 8
请注意，因为有 3 列，当我们在同一列中从一行向下移动到下一行时，索引的值会增加 3。另请注意，每行的第 1 列中的起始值为0、3、6，它们都是3的倍数。所以要把你的行值从1、2、3转换成0、3、6，我们先把行值减1，然后乘以3。
接下来，当您向右移动时，每一列只会递增 1。因此，我们从列值中减去一个并将其添加到计算的起始行值。这会将 (row, col) 映射到索引 0 到 8，此处视为一维数组：
1,1 | 1,2 | 1,3 | 2,1 | 2,2 | 2,3 | 3,1 | 3,2 | 3,3
0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8
But how was am I supposed to think of something like that? I would never have thought of that.
在称为 compact layout 的一维数组中表示二维结构是一种相当常见的设置。将 row/column 转换为等效索引值（反之亦然）所涉及的数学只是所有程序员在某个时候学习的东西。
这里有很多重构，仔细看：
class Program
{
static int turns;
static char[] board;
static bool playerOne;
public static void Main(string[] args)
{
Introduction();
bool playAgain = true;
while (playAgain)
{
ResetBoard();
bool gameOver = false;
while (!gameOver)
{
DrawBoard(board);
int row = getNumber(true);
int col = getNumber(false);
if (XorO(row, col)) {
turns++; // valid move was made
String msg = "";
String playerNumber = playerOne ? "1" : "2";
if (CheckForDiagonal())
{
gameOver = true;
msg = "Congratulations Player " + playerNumber + ", that's a diagonal win!";
}
else if (CheckForVertical())
{
gameOver = true;
msg = "Congratulations Player " + playerNumber + ", that's a vertical win!";
}
else if (CheckForHorizontal())
{
gameOver = true;
msg = "Congratulations Player " + playerNumber + ", that's a horizontal win!";
}
else if (turns == 9)
{
gameOver = true;
msg = "It's a draw!";
}
else
{
playerOne = !playerOne;
}
if (gameOver)
{
DrawBoard(board); // show last move
Console.WriteLine(msg);
}
}
}
Console.WriteLine("Play again (y/n)?");
string response = Console.ReadLine().ToLower();
playAgain = (response == "y");
}
}
private static void ResetBoard()
{
turns = 0;
playerOne = true;
board = new char[] {
' ',' ',' ',' ',' ',' ',' ',' ',' '
};
}
private static void Introduction()
{
Console.WriteLine("This is a simple TicTacToe game.\nEnter y if you have played before and n if you are new to this.");
string input1 = Console.ReadLine().ToLower();
Console.Clear();
if (input1 == "n")
{
Console.WriteLine("TicTacToeRules:");
Console.WriteLine("1. The game is played on a grid that's 3 squares by 3 squares.");
Console.WriteLine("2. You are X, your friend is O. Players take turns putting their marks in empty squares.");
Console.WriteLine("3. The first player to get 3 of her marks in a row (up, down, across, or diagonally) is the winner.");
Console.WriteLine("4. When all 9 squares are full, the game is over.");
Console.WriteLine("If you have read the rules, press any key to continue.");
Console.ReadKey();
Console.Clear();
}
else
{
Console.WriteLine("Alright, let's get started, you are X, your friend is O.");
}
}
private static void DrawBoard(char[] board)
{
Console.WriteLine(" ___ ___ ___ ");
for(int r=1; r<=3;r++)
{
Console.Write("|");
for(int c=1; c<=3; c++)
{
Console.Write(" {0} |", board[(r - 1) * 3 + (c - 1)]);
}
Console.WriteLine();
Console.WriteLine("|___|___|___|");
}
}
private static int getNumber(bool row)
{
int value = -1;
string description = row ? "row" : "column";
bool isValid = false;
while (!isValid)
{
Console.Write("Player '" + (playerOne ? "X" : "O") + "', choose a " + description + " (1-3): ");
if (int.TryParse(Console.ReadLine(), out value))
{
if (value >= 1 && value <= 3)
{
isValid = true;
}
else
{
Console.WriteLine("Please enter a number between 1 and 3.");
}
}
else
{
Console.WriteLine("\nInvalid " + description + "!");
}
}
return value;
}
private static bool XorO(int row, int col)
{
int index = ((row - 1) * 3) + (col - 1);
if (board[index] == ' ')
{
board[index] = playerOne ? 'X' : 'O';
return true;
}
else
{
Console.WriteLine("That spot is already taken!");
return false;
}
}
private static bool CheckForDiagonal()
{
return ((board[6] != ' ' && board[4] == board[6] && board[2] == board[6]) ||
(board[0] != ' ' && board[4] == board[0] && board[8] == board[0]));
}
private static bool CheckForVertical()
{
for(int c=0; c<=2; c++)
{
if (board[c] != ' ' && board[c+3] == board[c] && board[c+6] == board[c])
{
return true;
}
}
return false;
}
private static bool CheckForHorizontal()
{
for (int r=0; r<=6; r=r+3)
{
if (board[r] != ' ' && board[r + 1] == board[r] && board[r + 2] == board[r])
{
return true;
}
}
return false;
}
}