Question

我一般都是编程新手，几天前刚开始使用Java编程，所以我不确定我的程序编码方式是否可以实现我想要实现的目标

我基本上写了一个程序，要求一个＆＃34;力量＆＃34;它在0到9之间。它要求你选择一个武器（（1）刀是唯一可用的）。它需要这些信息并产生1-3之间的随机伤害比率加上你的力量所在的数字，假设以保持从20减去该值直到它达到0然后退出。

问题在于我陷入了困境。它从20减去了值，但重新开始并再次从20减去而不是存储减去的数字。

有没有人对如何完成这样的事情有任何建议？很感谢任何形式的帮助。到目前为止这是我的代码......

package untitledgame;

import java.util.Random;
import java.util.Scanner;   

public class UntitledGame {


    public static void main(String[] args){

        int pStrength, wKnife, damage, enemyDamage;

        Scanner in = new Scanner(System.in);  //used for next to int inputs

        System.out.println("Choose Your Strength (0-9)");
        pStrength = in.nextInt();
        System.out.println("Your Strength Is "+pStrength);

        System.out.println("Choose Your Weapon; (1)Knife");
        wKnife = in.nextInt();

        System.out.println("Press ENTER to battle...");
        Scanner scanner = new Scanner(System.in);  //waits for users to continue
        scanner.nextLine();



        if (wKnife == 1){


        do {

            int enemyHP = 20;

            Random rn = new Random();  //Random generator
            wKnife = rn.nextInt(3) + 1;  //Randomly generates knife damage


            damage = wKnife + pStrength;  //Damage logic
            System.out.println("Attack with knife has done: " );  //Knife damage     
            System.out.print(+damage);
            System.out.print(" damage." );

            System.out.println("");

            enemyDamage = enemyHP - damage;  // Remaing HP 

            System.out.println("Enemy has ");
            System.out.print(+enemyDamage);
            System.out.print(" HP left.");

            System.out.println("");

            System.out.println("Press Enter to Attack...");         
            scanner.nextLine();  

        } 
            while (enemyDamage > 0);

            System.out.println("Enemy has been defeated.");


        }

    }

}

Answer 1

在int enemyHP = 20;循环之外声明此do-while。现在，您每次迭代循环时都会将enemyHP重置为20。

此外，您不应在Random循环内重新创建do-while。在进入do块之前执行此操作。

Jonah Haney在答案中处理的逻辑存在其他问题。

Answer 2

在循环开始之前声明int enemyHP = 20。然后您的循环缺少以下行：

enemyHP = enemyHP - damage;

此外，似乎你希望循环继续运行直到敌人被击败。如果是这种情况，那么您的情况应该检查enemyHP是否已经完全耗尽，如下所示：

}
    while (enemyHP > 0);    //instead of while (enemyDamage > 0);

修改

这就是你的代码应该是什么样子。我不是说你应该把它直接复制到你的项目中。我说你应该看一下差异，它会帮助你看到自己代码中的逻辑问题：

public static void main(String[] args){ int pStrength, wKnife, damage, enemyDamage; Scanner in = new Scanner(System.in); //used for next to int inputs System.out.println("Choose Your Strength (0-9)"); pStrength = in.nextInt(); System.out.println("Your Strength Is " + pStrength); System.out.println("Choose Your Weapon; (1)Knife"); wKnife = in.nextInt(); System.out.println("Press ENTER to battle..."); in.nextLine(); in.nextLine(); Random rn = new Random(); //Random generator int enemyHP = 20; if (wKnife == 1){ do { System.out.println("Press Enter to Attack..."); in.nextLine(); wKnife = rn.nextInt(3) + 1; //Randomly generates knife damage damage = wKnife + pStrength; //Damage logic System.out.println("Attack with knife has done: " + damage + " damage."); //Knife damage enemyHP -= damage; // Calculate Remaining HP System.out.println("Enemy has " + enemyHP + " HP left."); } while (enemyHP > 0); System.out.println("Enemy has been defeated."); in.close(); } }

Answer 3

你需要初始化do-while循环的enemyHP变量OUTSIDE，否则它会在每次循环时将enemyHP重置为20。

在do-while循环中从Integer中减去

3 个答案: