TicTacToe不显示所有字母

Question

我创建了一个TicTacToe游戏，我无法弄清楚为什么当有人获胜时它不会显示最后一个字母。就像你连续3次一样，它只会显示2个字母但如果有意义的话就不会显示获胜的字母。

TicTacToe类代码：

import java.util.Scanner;
import javax.swing.JFrame;

public class TicTacToe {
    public static void main(String [] args) {
         Board board = new Board();
         Rules winner = new Rules();

         Scanner input = new Scanner(System.in);

         int slot;
         int swap = 1;

         System.out.print("Player 1 Name: ");
         String player1 = input.next();
         System.out.print('\f');
         System.out.print("Player 2 Name: ");
         String player2 = input.next();
         System.out.print('\f');

         System.out.print(player1 + ", Choose X or O: ");
         String letter = input.next();
         System.out.print('\f');

         String player1Letter;
         String player2Letter;

        if (letter.equalsIgnoreCase("x")) {
           player1Letter = "X";
           player2Letter = "O";
        } else {
           player1Letter = "O";
           player2Letter = "X";
        }

         System.out.println("This is how each number is set on the board");
         System.out.println();
         System.out.println("  1 | 2 | 3  ");
         System.out.println("-------------");
         System.out.println("  4 | 5 | 6  ");
         System.out.println("--------- ---");
         System.out.println("  7 | 8 | 9  ");
         System.out.println();
         System.out.println("Each number represents the slot number. For example if you wanted to");
         System.out.println("Place an 'X' or an 'O' in the very middle, you would choose slot 5");
         System.out.println();

        while (true) {
           System.out.print("Type 'begin' to begin: ");
           String begin = input.next();
           if (begin.equalsIgnoreCase("begin")) {
               break;
           } else if (!begin.equalsIgnoreCase("begin")) {
               System.out.println();
               System.out.println("Incorrect Syntax");
           }
         }
          while (true) {
            System.out.print('\f');
            System.out.println("  " + board.getPosition(1) + "  |  " + board.getPosition(2) + "  | " + board.getPosition(3) + "   ");
            System.out.println("----------------");
            System.out.println("  " + board.getPosition(4) + "  |  " + board.getPosition(5) + "  | " + board.getPosition(6) + "   ");
            System.out.println("----------------");
            System.out.println("  " + board.getPosition(7) + "  |  " + board.getPosition(8) + "  | " + board.getPosition(9) + "   ");
            System.out.println();
            System.out.print("Choose A Slot: ");
            slot = input.nextInt();
            if (swap == 1 || swap == 3 || swap == 5 || swap == 7 || swap == 9 || swap == 11) {
               board.setPosition(slot, player1Letter);
               swap++;
            } else if (swap == 2 || swap == 4 || swap == 6 || swap == 8 || swap == 10 || swap == 12) {
              board.setPosition(slot, player2Letter);
              swap++;
            }
            if (winner.isWinner(board) == true) {
                if (swap == 1 || swap == 3 || swap == 5 || swap == 7 || swap == 9 || swap == 11) {  //swap%2 == 1
                    System.out.println();
                    System.out.print(player2 + " Wins!");
                    break;
                }
                if (swap == 2 || swap == 4 || swap == 6 || swap == 8 || swap == 10 || swap == 12) {
                    System.out.println();
                    System.out.print(player1 + " Wins!");
                    break;
                } else if (winner.isWinner(board) == false) {
                    System.out.println();
                    System.out.print("Tie Game");
                    break;
                }
            }
        }   
        if (winner.isWinner(board) == true) {
          JFrame frame = new JFrame();
          frame.setSize(150, 250);
          frame.setTitle("A Simley Face");
          frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

          FaceComponent component = new FaceComponent();
          frame.add(component);

          frame.setVisible(true);
        }
    }
}

董事会职业代码：

public class Board
{ 
    private String position; 
        String topLeft= "1";
        String topMiddle= "2";
        String topRight= "3";
        String middleLeft= "4";
        String middleMiddle= "5";
        String middleRight= "6";
        String bottomLeft= "7";
        String bottomMiddle= "8";
        String bottomRight= "9"; 
    public String getPosition(int pos)
    {
        if (pos == 1)
        {
            return topLeft;//varible of position 1
        }
        else if (pos == 2)
        {
            return topMiddle;//varible of position 2
        }
        else if (pos == 3)
        {
            return topRight;//varible of position 3
        }
        else if (pos == 4)
        {
            return middleLeft;//varible of position 4
        }
        else if (pos == 5)
        {
            return middleMiddle;//varible of position 5
        }
        else if (pos == 6)
        {
            return middleRight;//varible of position 6
        }
        else if (pos == 7)
        {
            return bottomLeft;//varible of position 7
        }
        else if (pos == 8)
        {
            return bottomMiddle;//varible of position 8
        }
        else if (pos == 9)
        {
            return bottomRight;//varible of position 9
        }
        return position;
    }
    public String setPosition(int pos, String value)
    {
        if (pos == 1)
        {
            topLeft = value;
        }
        else if (pos == 2)
        {
            topMiddle = value;
        }
        else if (pos == 3)
        {
            topRight = value;
        }
        else if (pos == 4)
        {
            middleLeft = value;
        }
        else if (pos == 5)
        {
            middleMiddle = value;
        }
        else if (pos == 6)
        {
            middleRight = value;
        }
        else if (pos == 7)
        {
            bottomLeft = value;
        }
        else if (pos == 8)
        {
            bottomMiddle = value;
        }
        else if (pos == 9)
        {
            bottomRight = value;
        }
        return position;
    }
}

规则类代码：

public class Rules
{
    private String winner;
    private String threeInARow;

   public boolean isWinner(Board threeInARow) 
   {
       String pos1 = threeInARow.getPosition(1);
       String pos2 = threeInARow.getPosition(2);
       String pos3 = threeInARow.getPosition(3);
       String pos4 = threeInARow.getPosition(4);
       String pos5 = threeInARow.getPosition(5);
       String pos6 = threeInARow.getPosition(6);
       String pos7 = threeInARow.getPosition(7);
       String pos8 = threeInARow.getPosition(8);
       String pos9 = threeInARow.getPosition(9);

       if (pos1.equals(pos2) && pos2.equals(pos3))
       {
           return true;
       }
       else if (pos4.equals(pos5) && pos5.equals(pos6))
       {
           return true;
       }
       else if (pos7.equals(pos8) && pos8.equals(pos9))
       {
           return true;
       }
       else if (pos1.equals(pos4) && pos4.equals(pos7))
       {
           return true;
       }
       else if (pos2.equals(pos5) && pos5.equals(pos8))
       {
           return true;
       }
       else if (pos3.equals(pos6) && pos6.equals(pos9))
       {
           return true;
       }
       else if (pos1.equals(pos5) && pos5.equals(pos9))
       {
           return true;
       }
       else if (pos3.equals(pos5) && pos5.equals(pos7))
       {
           return true;
       }
       else 
       {
           return false;
       }

    }
}

FaceComponent类代码：

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Line2D;
import javax.swing.JComponent;
public class FaceComponent extends JComponent
{  
   public void paintComponent(Graphics g)
   {  
      // Recover Graphics2D 
      Graphics2D g2 = (Graphics2D) g;

      // Draw the head
      Ellipse2D.Double head = new Ellipse2D.Double(5, 10, 100, 150);
      g2.draw(head);

      // Draw the eyes
      g2.setColor(Color.BLACK);
      Rectangle eye = new Rectangle(25, 70, 15, 15);
      g2.fill(eye);
      eye.translate(50, 0);
      g2.fill(eye);

      // Draw the mouth
      Line2D.Double mouth = new Line2D.Double(30, 110, 80, 110);
      g2.setColor(Color.RED);
      g2.draw(mouth);

      // Draw the greeting
      g2.setColor(Color.BLUE);
      g2.drawString("YOU ARE A WINNER", 5, 175);
   }
}

Answer 1

  

为什么当有人获胜时它不会显示最后一个字母。

这种情况正在发生，因为在您的main方法中，在您收到用户输入后，您正在将用户选择的位置更改为播放器的字母。然后你将继续检查玩家是否是胜利者。如果玩家不是赢家，那么你继续画板并等待下一个玩家输入。但是如果玩家是胜利者，那么你只需显示消息并退出循环而不重新绘制棋盘。

解决方案是您可以在检查获胜者的if条件内再次绘制棋盘，然后显示消息并退出循环。

我建议您在班级TicTacToe中声明一个方法说画板，如下所示：

private void drawBoard(Board board){
    System.out.print('\f');
    System.out.println("  " + board.getPosition(1) + "  |  " + board.getPosition(2) + "  | " + board.getPosition(3) + "   ");
    System.out.println("----------------");
    System.out.println("  " + board.getPosition(4) + "  |  " + board.getPosition(5) + "  | " + board.getPosition(6) + "   ");
    System.out.println("----------------");
    System.out.println("  " + board.getPosition(7) + "  |  " + board.getPosition(8) + "  | " + board.getPosition(9) + "   ");
    System.out.println();
}

现在更改您的while循环以绘制电路板并从以下位置获取用户输入：

      while (true) {
        System.out.print('\f');
        System.out.println("  " + board.getPosition(1) + "  |  " + board.getPosition(2) + "  | " + board.getPosition(3) + "   ");
        System.out.println("----------------");
        System.out.println("  " + board.getPosition(4) + "  |  " + board.getPosition(5) + "  | " + board.getPosition(6) + "   ");
        System.out.println("----------------");
        System.out.println("  " + board.getPosition(7) + "  |  " + board.getPosition(8) + "  | " + board.getPosition(9) + "   ");
        System.out.println();
        System.out.print("Choose A Slot: ");
        slot = input.nextInt();
        if (swap == 1 || swap == 3 || swap == 5 || swap == 7 || swap == 9 || swap == 11) {
           board.setPosition(slot, player1Letter);
           swap++;
        } else if (swap == 2 || swap == 4 || swap == 6 || swap == 8 || swap == 10 || swap == 12) {
          board.setPosition(slot, player2Letter);
          swap++;
        }
        if (winner.isWinner(board) == true) {
            if (swap == 1 || swap == 3 || swap == 5 || swap == 7 || swap == 9 || swap == 11) {  //swap%2 == 1
                System.out.println();
                System.out.print(player2 + " Wins!");
                break;
            }
            if (swap == 2 || swap == 4 || swap == 6 || swap == 8 || swap == 10 || swap == 12) {
                System.out.println();
                System.out.print(player1 + " Wins!");
                break;
            } else if (winner.isWinner(board) == false) {
                System.out.println();
                System.out.print("Tie Game");
                break;
            }
        }
    }   

到：

      while (true) {
        drawBoard(board); //Replace with draw board
        System.out.print("Choose A Slot: ");
        slot = input.nextInt();
        if (swap == 1 || swap == 3 || swap == 5 || swap == 7 || swap == 9 || swap == 11) {
           board.setPosition(slot, player1Letter);
           swap++;
        } else if (swap == 2 || swap == 4 || swap == 6 || swap == 8 || swap == 10 || swap == 12) {
          board.setPosition(slot, player2Letter);
          swap++;
        }
        if (winner.isWinner(board) == true) {
            drawBoard(board); // Add the draw board.
            if (swap == 1 || swap == 3 || swap == 5 || swap == 7 || swap == 9 || swap == 11) {  //swap%2 == 1
                System.out.println();
                System.out.print(player2 + " Wins!");
                break;
            }
            if (swap == 2 || swap == 4 || swap == 6 || swap == 8 || swap == 10 || swap == 12) {
                System.out.println();
                System.out.print(player1 + " Wins!");
                break;
            } else if (winner.isWinner(board) == false) {
                System.out.println();
                System.out.print("Tie Game");
                break;
            }
        }
    }