获取新的随机数用于猜测Java中的游戏(Getting New Random Numbers For Guessing Game In Java)

 我正在构建一个Java游戏，我已经完成了最后一个部分。 还有其他一些问题需要解决，这些问题很容易解决。 虽然有一个问题我无法弄清楚，也就是说每次运行游戏后我都无法获得新的随机数字。 
 
 例如，如果没有人猜测计算机从数字（1-20）随机生成的数字比游戏重复自己的数字。 在此期间你正在玩2台计算机，它们的数字也是随机组成的（再次是1-20个值）。 
 
 这是我制作的Player类的一些代码 
 
import java.util.Scanner;
import java.util.Random;

public class Player {
    private double currentGuess = 0;
    private String firstName;
    private boolean isCorrect;
    Scanner myScanner = new Scanner(System.in);

public Player() {
}

public double autoGuess()   {
    Random randomNumber = new Random();
    double number = randomNumber.nextInt(20) + 1;

    return number;
}
 
 这是我的GuessGame类，它是动作实际发生的地方。 我无法弄清楚为什么当我调用autoGuess方法（来自播放器类）时，我无法在每次游戏后显示新的随机数，导致没有人猜测正确的数字。 同样可以随机生成要猜测的数字（WINNING_NUMBER），每次新游戏后它仍然保持不变。 这是我的GuessGame类的一些代码。 
 
import java.util.Random;

public class GuessGame {
    Player player1 = new Player();
    Player player2 = new Player();
    Player player3 = new Player();

    double player2Guess = player2.autoGuess();
    double player3Guess = player3.autoGuess();
    int numberOfTries = 0;

public double generateWinningNumber()   {
    Random randomGenerate = new Random();
    double randomNumber = randomGenerate.nextInt(20) + 1;

    return randomNumber;
}

private final double WINNING_NUMBER = generateWinningNumber();

public void startGame() {
    System.out.println("VM: Welcome we are going to play a number guessing game. I'm (the JVM)\n"
            + "going to randomly pick a number between 0 and 20. You and the 2 other\n"
            + "computer-generated players are going to try to guess that number. The game\n"
            + "will end when at least one of the players correctly guesses the number.\n");

    System.out.println(WINNING_NUMBER);

    System.out.print("What is your name?  ");
        String player1Name = player1.readName();

    while (player1.isCorrect() == false)    
        {

        System.out.print(player1Name + ", enter your guess:  ");
            player1.readGuess();
            player2.autoGuess();
            player3.autoGuess();

            numberOfTries++;

            if (player1.getCurrentGuess() == WINNING_NUMBER || player2Guess == WINNING_NUMBER || player3Guess == WINNING_NUMBER)
            {
                player1.setCorrect(true);
                displayGuesses();
                determineWinner();
            }

            else
            {
                displayGuesses();
                displayHints();
                System.out.println("No one guessed the number.\nPlayers will need to guess again.\n");
                System.out.println("The winning number was: " + WINNING_NUMBER);
                generateWinningNumber();
            }
        }   
}


public void displayGuesses()    {
    System.out.print("Player 2's guess is: " + player2Guess + "\n");
    System.out.print("Player 3's guess is: " + player3Guess + "\n\n");
}
 
 还有更多内容，显然还有更多需要解决的问题，但我试图将此问题排除在外。 我有我的驱动程序类开始这个游戏，也知道我需要将我的数字舍入到Ints所以没有小数位。 此外，所有提示方法都指的是如果语句告诉您是否热，温或冷。 这完全没问题。 只需要一些帮助，找出如何在我的while语句中每次新的不成功游戏后获取一个新的随机数。 

I am building a game for Java and I've gotten down to one of the last parts. There are still other things to fix which are easy fixes. Although there is one problem I can't figure out, which is that after every time I run the game I can't get new random numbers to show up.
 
For instance, if nobody guesses the number that is made at random by the computer from numbers (1-20) than the game repeats itself. You are playing 2 computers during this and their numbers are also made up at random (again 1-20 values).
 
Here is some of the code for the Player class I made
 
import java.util.Scanner;
import java.util.Random;

public class Player {
    private double currentGuess = 0;
    private String firstName;
    private boolean isCorrect;
    Scanner myScanner = new Scanner(System.in);

public Player() {
}

public double autoGuess()   {
    Random randomNumber = new Random();
    double number = randomNumber.nextInt(20) + 1;

    return number;
}
 
Here is my GuessGame class, which is where the action actually happens. I cannot figure out why when I call for the autoGuess method (from the player class) I cannot get new random numbers to show up after each game which resulted in nobody guessing the right number. Same goes for randomly generating the number to be guessed (WINNING_NUMBER), it still stays the same after every new game. Here is some of the code of my GuessGame class.
 
import java.util.Random;

public class GuessGame {
    Player player1 = new Player();
    Player player2 = new Player();
    Player player3 = new Player();

    double player2Guess = player2.autoGuess();
    double player3Guess = player3.autoGuess();
    int numberOfTries = 0;

public double generateWinningNumber()   {
    Random randomGenerate = new Random();
    double randomNumber = randomGenerate.nextInt(20) + 1;

    return randomNumber;
}

private final double WINNING_NUMBER = generateWinningNumber();

public void startGame() {
    System.out.println("VM: Welcome we are going to play a number guessing game. I'm (the JVM)\n"
            + "going to randomly pick a number between 0 and 20. You and the 2 other\n"
            + "computer-generated players are going to try to guess that number. The game\n"
            + "will end when at least one of the players correctly guesses the number.\n");

    System.out.println(WINNING_NUMBER);

    System.out.print("What is your name?  ");
        String player1Name = player1.readName();

    while (player1.isCorrect() == false)    
        {

        System.out.print(player1Name + ", enter your guess:  ");
            player1.readGuess();
            player2.autoGuess();
            player3.autoGuess();

            numberOfTries++;

            if (player1.getCurrentGuess() == WINNING_NUMBER || player2Guess == WINNING_NUMBER || player3Guess == WINNING_NUMBER)
            {
                player1.setCorrect(true);
                displayGuesses();
                determineWinner();
            }

            else
            {
                displayGuesses();
                displayHints();
                System.out.println("No one guessed the number.\nPlayers will need to guess again.\n");
                System.out.println("The winning number was: " + WINNING_NUMBER);
                generateWinningNumber();
            }
        }   
}


public void displayGuesses()    {
    System.out.print("Player 2's guess is: " + player2Guess + "\n");
    System.out.print("Player 3's guess is: " + player3Guess + "\n\n");
}
 
There is more to this and obviously more to fix, but I'm trying to just get this issue out of the way. I have my driver class starting this game and also know I need to round my numbers to Ints so there isn't a decimal place. Also, all the hint method is referring to is just if statements that tell you if you are hot, warm, or cold. That runs perfectly fine. Just needing some help with figuring out how to get a new random number after every new unsuccessful game from my while statement.

原文：https://stackoverflow.com/questions/26616897