Java:编写一个简单的迷宫游戏

Question

我在java编写一个简单的迷宫游戏.该程序从输入文件中读取文本"地图"以用于迷宫的布局.规则很简单:通过用户输入导航迷宫(由2D数组表示)并避免塌陷(由X表示),并将"P"(玩家)转到标记为"T"的点.现在,我已经编写了大部分代码,这只是让它正常工作的问题.我已经将大部分游戏设置为使用while循环运行,并将布尔"got treasure"设置为false.一旦这是真的,它应该结束游戏.

但是,我没有编写玩家实际获得宝藏的情况,所以我想知道为什么我的代码只是吐出"恭喜!你找到了宝藏!" 没有别的.如果有人能对此有所了解,我将非常感激.我的代码有点乱,因为我们的老师刚刚学习了方法,构造函数和创建自己的类.这是我到目前为止的代码:

import java.util.*;
import java.io.File;
public class MazeGame {

public static void main(String[] args) throws Exception {
    Scanner scan = new Scanner(new File("maze.txt"));
    Scanner user = new Scanner(System.in);
    int rows = scan.nextInt();
    int columns = scan.nextInt();
    int px = 0;
    int py = 0;
    String [][] maze = new String[rows][columns];
    String junk = scan.nextLine();

    for (int i = 0; i < rows; i++){
        String temp = scan.nextLine();
        String[] arrayPasser = temp.split("");
        for (int j = 0; j < columns; j++){
            maze[i][j] = arrayPasser[i];
        }
    }

    boolean gotTreasure = false;

    while (gotTreasure = false){
        for (int i = 0; i < rows; i++){
            for (int j = 0; j < columns; j++){
                System.out.print(maze[i][j]);
                System.out.print(" ");
        }
            System.out.print("\n");
      }


        System.out.printf("\n");
        System.out.println("You may:");
        System.out.println("1) Move up");
        System.out.println("2) Move down");
        System.out.println("3) Move left");
        System.out.println("4) Move right");
        System.out.println("0) Quit");
        int choice = user.nextInt();
        int i = 0;

        if (choice == 1 && i >= 0 && i < columns){
            for (int k = 0; k < rows; k++){
                for (int l = 0; l < columns; l++){
                    if (maze[k][l].equals(maze[px][py]) && maze[px][py-1].equals("X") == false){
                        maze[px][py] = ".";
                        maze[k][l-1] = "P";
                        maze[px][py] = maze[k][l-1];
                    }else if (maze[px][py-1] == "X"){
                        System.out.println("Cannot move into a cave-in! Try something else.");
                    }else {
                    continue;}


                    }
                }
            }
        else if (choice == 2 && i >= 0 && i < columns){
            for (int k = 0; k < rows; k++){
                for (int l = 0; l < columns; l++){
                    if (maze[k][l].equals(maze[px][py]) && maze[px][py+1].equals("X") == false){
                        maze[px][py] = ".";
                        maze[k][l+1] = "P";
                        maze[px][py] = maze[k][l+1];
                    }else if (maze[px][py+1] == "X"){
                        System.out.println("Cannot move into a cave-in! Try something else.");
                    }else {
                    continue;}

               }
             }
            }
        else if (choice == 3 && i >= 0 && i < columns){
            for (int k = 0; k < rows; k++){
                for (int l = 0; l < columns; l++){
                    if (maze[k][l].equals(maze[px][py]) && maze[px-1][py].equals("X") == false){
                        maze[px][py] = ".";
                        maze[k-1][l] = "P";
                        maze[px][py] = maze[k-1][l];
                    }else if (maze[px-1][py] == "X"){
                        System.out.println("Cannot move into a cave-in! Try something else.");
                    }else {
                    continue;}
                }
            }
        }
        else if (choice == 4 && i >= 0 && i < columns){
            for (int k = 0; k < rows; k++){
                for (int l = 0; l < columns; l++){
                    if (maze[k][l].equals(maze[px][py]) && maze[px+1][py].equals("X") == false){
                        maze[px][py] = ".";
                        maze[k+1][l] = "P";
                        maze[px][py] = maze[k+1][l];
                    }else if (maze[px+1][py] == "X"){
                        System.out.println("Cannot move into a cave-in! Try something else.");
                    }else {
                    continue;}
                }
            }
        }
        else if (choice == 0){
            System.exit(0);
        }
    }

    System.out.println("Congratulations, you found the treasure!");

    scan.close();
    user.close();
        }

    }

这是示例输入文件:

• 5 5
• P.XX.
• .X...
• ...X.
• XXT ..
• ..X..

Answer 1

(叹气)一个等号而不是两个.你有"while(gotTreasure = false)",它将值false赋给gotTreasure并且不进入循环.将其更改为"while(gotTreasure == false)并进入循环.

对于未来的问题:请尝试自己弄清楚发生了什么,并让其他人知道您尝试了什么以及您对此有何具体问题.可以说我应该放手一搏,因为它本质上是一个为您调试代码的请求.学会调试自己.如果没有执行trace语句,那么很可能是那时的代码没有被执行.如果没有输入循环,几乎可以肯定是因为进入循环的条件不存在.

学习使用调试器 - eclipse(而且,我确信,许多其他开发工具)都非常出色.找出断点是什么,如何设置它并在命中时检查变量,并从中找出出错的地方.