Question

我试图让它在玩游戏并确定胜利者之后，它将询问用户是否想再玩一次。我添加了一个“do while”循环，但它似乎没有工作。输出始终如下：

玩游戏
获得胜利者/失败者/领带并得分
询问您想要再次选择的内容
然后询问用户是否想再次播放
即使用户拒绝，也不会停止游戏

我不确定问题是什么，因为我对编码很陌生。谢谢！

/*
Playing Rock Paper Scissors against a computer would be really boring if we 
always knew what the computer was going to choose, or we created a program 
that has a distinct pattern. In order to increase replayability of your game
you will want to randomize the computer's choice.

For our game we will have the computer generate a random number (0, 1, or 2) 
which will correspond to one of the choices (i.e. 0 = Rock, 1 = Paper, 2 = 
Scissors)  
 */

import javax.swing.*;
public class rockPaperScissors {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        int playAgain = 0;
        int score = 0;
        String [] playerOptions = {"Rock","Paper","Scissor"};
        String playerChoice = (String)JOptionPane.showInputDialog(null,"1, 2, 3, Shoot:",
                "Rock, Paper, Scissor",JOptionPane.QUESTION_MESSAGE,null,playerOptions,playerOptions[0]);//Gets players pick
        int computerChoice = (int)(Math.random()*(3));//gets computers choice randomly
        while (playerChoice.equals("Rock") || playerChoice.equals("Paper") || playerChoice.equals("Scissors")) {

            do {
                if (computerChoice == 0 && playerChoice.equals("Rock")) {
                    JOptionPane.showMessageDialog(null,"Tied! You both chose rock.");//determines winner and prints only for tied and wins for user
                    System.out.println(score);

                    playerChoice = (String)JOptionPane.showInputDialog(null,"1, 2, 3, Shoot:",
                            "Rock, Paper, Scissor",JOptionPane.QUESTION_MESSAGE,null,playerOptions,playerOptions[0]);
                } else if (computerChoice == 0 && playerChoice.equals("Paper")) {
                    JOptionPane.showMessageDialog(null,"You won!");

                    score = score+1;
                    System.out.println(score);

                    playerChoice = (String)JOptionPane.showInputDialog(null,"1, 2, 3, Shoot:",
                            "Rock, Paper, Scissor",JOptionPane.QUESTION_MESSAGE,null,playerOptions,playerOptions[0]);
                } else if (computerChoice == 1 && playerChoice.equals("Paper")){
                    JOptionPane.showMessageDialog(null,"Tied! You both chose Paper!");
                    System.out.println(score);

                    playerChoice = (String)JOptionPane.showInputDialog(null,"1, 2, 3, Shoot:",
                            "Rock, Paper, Scissor",JOptionPane.QUESTION_MESSAGE,null,playerOptions,playerOptions[0]);
                } else if (computerChoice == 1 && playerChoice.equals("Scissor")){
                    JOptionPane.showMessageDialog(null,"You won!");
                    score = score+1;
                    System.out.println(score);

                    playerChoice = (String)JOptionPane.showInputDialog(null,"1, 2, 3, Shoot:",
                            "Rock, Paper, Scissor",JOptionPane.QUESTION_MESSAGE,null,playerOptions,playerOptions[0]);
                } else if (computerChoice == 2 && playerChoice.equals("Scissor")) {
                    JOptionPane.showMessageDialog(null,"Tied! You both chose scissor!");
                    System.out.println(score);

                    playerChoice = (String)JOptionPane.showInputDialog(null,"1, 2, 3, Shoot:",
                            "Rock, Paper, Scissor",JOptionPane.QUESTION_MESSAGE,null,playerOptions,playerOptions[0]);
                } else if (computerChoice == 2 && playerChoice.equals("Rock")){
                    JOptionPane.showMessageDialog(null,"You won!");
                    score = score+1;
                    System.out.println(score);

                    playerChoice = (String)JOptionPane.showInputDialog(null,"1, 2, 3, Shoot:",
                            "Rock, Paper, Scissor",JOptionPane.QUESTION_MESSAGE,null,playerOptions,playerOptions[0]);
                } else { //if user lost 
                    JOptionPane.showMessageDialog(null,"You lost! Try again!");
                    score = score-1;
                    System.out.println(score);

                    playerChoice = (String)JOptionPane.showInputDialog(null,"1, 2, 3, Shoot:",
                            "Rock, Paper, Scissor",JOptionPane.QUESTION_MESSAGE,null,playerOptions,playerOptions[0]);
                }
                playAgain = JOptionPane.showConfirmDialog(null, "Play again?");
            } while (playAgain == 0);
        }
        System.out.println("Game Ended");
        System.exit(0);
    }
}

Answer 1

你的循环是错误的方式

while (playerChoice.equals("Rock") || playerChoice.equals("Paper") || /*...*/) 
{
    do {
        // did they win?
        // ...
        playAgain = JOptionPane.showConfirmDialog(null, "Play again?");
    } while (playAgain == 0);
}

您希望将do-while循环移动到几乎所有游戏的逻辑中，例如。

do {
    // get input and computer choice
    while (playerChoice.equals("Rock") || playerChoice.equals("Paper") || /*...*/)
    {
        // did they win?
        // ...
    }
    playAgain = JOptionPane.showConfirmDialog(null, "Play again?");
} while (playAgain == 0);

确认对话框不起作用

1 个答案: