我被井字棋问题困扰了。定义一个名为 TicTacToe 的类。 TicTacToe 类型的对象是 TicTacToe 的单个游戏。将游戏板存储为具有三行三列的基本类型 char 的单个二维数组。包括添加一步、显示棋盘、告知轮到谁、告知是否有获胜者、说出谁是获胜者以及重新开始游戏的方法。为该类编写一个主要方法，该方法将允许两个玩家在同一个键盘上轮流输入他们的 Action 。
我已经编写了一些方法，并且一直在进行测试。当我测试我的代码时，我要么让它放置一个标记，但也打印出无效的条目，或者它会不断循环询问移动，然后说空间已被占用。我不知道如何解决这个问题。我确信这与我的 do while 循环以及 isEmpty 和 notValid 的 boolean 方法有关。此外，我还困惑于如何为每个玩家的胜利实现计数器。
这是我的代码:
public void addMove()
{
checkTurn();
int row, col;
do
{
System.out.println("Enter a row (1-3): ");
row = in.nextInt() - 1; //Array index starts at 0.
System.out.println("Enter a column (1-3): ");
col = in.nextInt() - 1;
if (row>=0 && row<ROWS)
if(col>=0 && col<COLUMNS)
if (playerX)
{
gameBoard[row][col] = player1Move;
}
else
{
gameBoard[row][col] = player2Move;
}
checkForWin();
changePlayer();
}while (notValid(row,col));
System.out.println("Invaild Entry.");
//System.exit(0);
//checkForWin();
//changePlayer();
}
public boolean notValid(int row, int col)
{
if (row < 0 || row > ROWS )
return true;
if (col < 0 || col > COLUMNS)
return true;
if (!isEmpty(row,col))
return true;
return false;
}
public boolean isEmpty(int row, int col)
{
if(gameBoard[row][col]==' ')
return true;
else
{
System.out.println("Space is already occupied.");
return false;
}
}
}
这是我的测试类(class):
public class TicTacToe
{
public static void main(String[] args)
{
TicTacToeClass game = new TicTacToeClass();
game.addMove();
game.printBoard();
}
}
最佳答案
我会让你处理多游戏部分。这将玩一局游戏并退出。
import java.util.Scanner;
public class TicTacToe
{
private final static int ROWS = 3;
private final static int COLUMNS = 3;
private char[][] gameBoard;
private int player1WinCount = 0;
private int player2WinCount = 0;
private char player1Move = 'X', player2Move = 'O';
private boolean playerX = true;
Scanner in = new Scanner(System.in);
public TicTacToe()
{
gameBoard = new char [ROWS][COLUMNS];
playerX = true;
startGame();
}
//Initiate the game board with all empty spaces.
public void startGame()
{
for (int row = 0; row < ROWS; row++) //Loop through rows.
for(int col = 0; col < COLUMNS; col++) //Loop through columns.
gameBoard[row][col]= ' ';
}
public boolean checkTurn()
{
if (playerX)
{
System.out.println("Player X's turn.");
}
else
{
System.out.println("Player O's turn.");
}
return playerX;
}
public void addMove()
{
int row, col;
do
{
checkTurn();
System.out.println("Enter a row (1-3): ");
row = in.nextInt() - 1; //Array index starts at 0.
System.out.println("Enter a column (1-3): ");
col = in.nextInt() - 1;
if(notValid(row,col)){
// do not proceed
System.out.println("Invalid Entry.");
continue;
}
if (row>=0 && row<ROWS)
if(col>=0 && col<COLUMNS)
if (playerX)
{
gameBoard[row][col] = player1Move;
}
else
{
gameBoard[row][col] = player2Move;
}
boolean hasWon = checkForWin();
if(hasWon)
{
System.out.println("You won");
if(playerX)
{
player1WinCount++;
}
else
{
player2WinCount++;
}
break;
}
changePlayer();
}while (true);
}
public boolean notValid(int row, int col)
{
if (row < 0 || row > (ROWS - 1))
return true;
if (col < 0 || col > (COLUMNS - 1))
return true;
if (!isEmpty(row,col))
return true;
return false;
}
public boolean isEmpty(int row, int col)
{
if(gameBoard[row][col]==' ')
return true;
else
{
System.out.println("Space is already occupied.");
return false;
}
}
public void changePlayer()
{
if (playerX)
{
playerX = false;
}
else
{
playerX = true;
}
}
public void printBoard()
{
for (int row = 0; row < ROWS; row++){
for (int col = 0; col < COLUMNS; col++)
{
System.out.print("" + gameBoard[row][col]);
if(col == 0 || col == 1)
System.out.print("|");
}
if (row ==0 || row ==1)
System.out.print("\n-----\n");
}
}
/**
* This method checks to see if a winner.
* return true is there is a winner.
*/
public boolean checkForWin()
{
//checks rows for win
for(int row = 0; row < ROWS; row ++)
{
if (gameBoard[row][0] == gameBoard[row][1] && gameBoard[row][1]==gameBoard[row][2] && gameBoard[row][0]!= ' ')
return true;
}
//checks columns for wins.
for (int col = 0; col < COLUMNS; col++)
{
if (gameBoard[0][col] == gameBoard[1][col]&& gameBoard[1][col]==gameBoard[2][col] && gameBoard[0][col]!= ' ')
return true;
}
//check the diagonals for wins.
if (gameBoard[0][0] == gameBoard[1][1] && gameBoard[1][1] == gameBoard[2][2] && gameBoard[0][0]!= ' ')
return true;
if (gameBoard[2][0] == gameBoard[1][1] && gameBoard[1][1] == gameBoard[0][2] && gameBoard[0][2]!= ' ')
return true;
return false;
}
public static void main(String args[])
{
TicTacToe game = new TicTacToe();
game.addMove();
game.printBoard();
}
}
关于java - 井字游戏问题，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/36848939/