java - 在一个 while 循环内的两个嵌套 while 循环之间切换

Question

我是一名菜鸟程序员，我的包含 while 循环的作业存在问题。

目前，我正在编写一款游戏的战斗系统，该游戏有两个需要相互循环的阶段(攻击阶段和防御阶段)。它是作为一种方法创建的，我可以在游戏中多次调用该方法。我想让代码工作的方式是创建一个 while 循环，该循环将持续到其中一个 Actor 的生命值达到 0。接下来，我将 while 循环嵌套在第一个 while 循环中，以使用满足嵌套循环条件的 boolean 值来继续在两者之间切换。然而，在测试代码并尝试其他循环代码的方法之后，它似乎陷入了循环防御阶段而不是切换回攻击阶段的困境。

我非常感谢反馈并帮助防止代码这样做。也忽略代码中的“使用项目”位，我还没有将其添加为选项，所以现在它只是文本。

import java.util.*;

public class CombatSystemTesting 
{
// Combat Variables
public static boolean attackStance = true;
public static boolean defenceStance = false;

// Player Variables
public static int playerGold = 0;
public static int playerHP = 20;
public static int playerArmour = 0;
public static int playerShield = 1;
public static int playerAttack = 3;

// Enemy Variables
public static int enemyHP = 12;
public static int enemyDF = 0;
public static int enemyAttack = 3;

public static void main(String[] args) 
{
    battle1();
}

    public static void battle1()
    {
        int enemyAttackChance = (int)(Math.random()*3)+1;
        int enemyDefendChance = (int)(Math.random()*3)+1;

        Scanner sc = new Scanner(System.in);

        while (playerHP <= 0 || enemyHP <= 0);
        {
            while (attackStance = true)
            {
                System.out.println("(Attack Phase)");
                System.out.println("");
                System.out.println("'1' - [Attack]");
                System.out.println("'2' - [Strike]");
                System.out.println("'3' - [Use Item]");
                System.out.println("");
                System.out.println("HP: " + playerHP + " DF: " + playerArmour + " Gold: " + playerGold);
                System.out.println("");
                System.out.println("Enemy HP: " + enemyHP + " Enemy DF: " + enemyDF);
                System.out.println("");
                System.out.print("Your choice: ");
                int choice = sc.nextInt();

                System.out.println("");
                System.out.println("----------------------------------------------------------------------------------------------");
                System.out.println("");

                if (choice == 1)
                {
                    if (enemyDefendChance == 1 || enemyDefendChance == 2)
                    {
                        System.out.println("You used: Attack!");
                        System.out.println("Rat Used: Defend!");

                        enemyDF = enemyDF + 1;
                        playerAttack = playerAttack - enemyDF;
                        enemyHP = enemyHP - playerAttack;
                        playerAttack = playerAttack + enemyDF;
                        enemyDF = enemyDF - 1;

                        attackStance = false;
                        defenceStance = true;
                    }
                    else if (enemyDefendChance == 3)
                    {
                        System.out.println("You used: Attack!");
                        System.out.println("Rat Used: Counter!");
                        System.out.println("");

                        playerAttack = playerAttack - enemyDF;
                        enemyHP = enemyHP - playerAttack;
                        playerAttack = playerAttack + enemyDF;

                        attackStance = false;
                        defenceStance = true;
                    }
                }
                if (choice == 2)
                {
                    if (enemyDefendChance == 1 || enemyDefendChance == 2)
                    {
                        System.out.println("You used: Strike!");
                        System.out.println("Rat Used: Defend!");
                        System.out.println("");

                        playerAttack = playerAttack * 2;
                        enemyDF = enemyDF + 1;
                        enemyHP = enemyHP - playerAttack + enemyDF;
                        enemyDF = enemyDF - 1;
                        playerAttack = playerAttack / 2;

                        attackStance = false;
                        defenceStance = true;
                    }
                    else if (enemyDefendChance == 3)
                    {
                        System.out.println("You used: Strike!");
                        System.out.println("Rat Used: Counter!");
                        System.out.println("");

                        playerHP = playerHP - playerAttack * 2 + playerArmour;

                        attackStance = false;
                        defenceStance = true;
                    }
                }
            while (defenceStance = true)
                {
                System.out.println("(Defence Phase)");
                System.out.println("");
                System.out.println("'1' - [Defend]");
                System.out.println("'2' - [Counter]");
                System.out.println("'3' - [Use Item]");
                System.out.println("");
                System.out.println("HP: " + playerHP + " DF: " + playerArmour + " Gold: " + playerGold);
                System.out.println("");
                System.out.println("Enemy HP: " + enemyHP + " Enemy DF: " + enemyDF);
                System.out.println("");
                System.out.print("Your choice: ");
                choice = sc.nextInt();

                System.out.println("");
                System.out.println("----------------------------------------------------------------------------------------------");
                System.out.println("");

                if (choice == 1)
                {
                    if (enemyAttackChance == 1 || enemyAttackChance == 2)
                    {
                        System.out.println("You used: Defend!");
                        System.out.println("Rat Used: Attack!");

                        playerArmour = playerArmour + playerShield;
                        enemyAttack = enemyAttack - playerArmour;
                        playerHP = playerHP - enemyAttack;
                        enemyAttack = enemyAttack + playerArmour;
                        playerArmour = playerArmour - playerShield;
                        System.out.println("");

                        attackStance = true;
                        defenceStance = false;
                    }
                    else if (enemyAttackChance == 3)
                    {
                        System.out.println("You used: Defend!");
                        System.out.println("Rat Used: Strike!");

                        enemyAttack = enemyAttack * 2;
                        playerArmour = playerArmour + playerShield;
                        playerHP = playerHP - enemyAttack + playerArmour;
                        playerArmour = playerArmour - playerShield;
                        enemyAttack = enemyAttack / 2;
                        System.out.println("");

                        attackStance = true;
                        defenceStance = false;
                    }
                }
                else if (choice == 2)
                {
                    if (enemyAttackChance == 1 || enemyAttackChance == 2)
                    {
                        System.out.println("You used: Counter!");
                        System.out.println("Rat Used: Attack!");

                        enemyAttack = enemyAttack - playerArmour;
                        playerHP = playerHP - enemyAttack;
                        enemyAttack = enemyAttack + playerArmour;

                        attackStance = true;
                        defenceStance = false;
                    }
                    else if (enemyAttackChance == 3)
                    {
                        System.out.println("You used: Attack!");
                        System.out.println("Rat Used: Counter!");
                        System.out.println("");

                        playerAttack = playerAttack - enemyDF;
                        enemyHP = enemyHP - playerAttack;
                        playerAttack = playerAttack + enemyDF;

                        attackStance = true;
                        defenceStance = false;
                    }
                }
            }
        }
    }       
    //Pending code will be added later
    System.out.println("You shouldn't see this message till you or oppenent have reached 0 HP");
}
}

Answer 1

defenceStance = true 是一个赋值，而不是比较，因此 while(defenceStance = true) 将始终为 true，因为它正在测试赋值是否成功。您需要使用 == 来比较值。但由于您正在测试 true，因此您可以只说 while(defenceStance)，因为 bool == true 将始终只得出 bool 的值。