移动随机矩阵8*8

Question

我尝试实现吸尘器的随机移动，移动的方向应该在数组列表中，所以每次机器应该从列表中随机选择3个方向作为方向示例(N,N,S)。机器将按照方向不断移动，直到到达需要重新选择的边缘。

机器到达边缘时不改变方向的问题

我写的这个方法，是负责判断机器是否到达边缘的:

public boolean Wall(int x, int y) {
    if (choices.contains("N") && y == 7) {
        return false;
    } else if (choices.contains("S") && y == 0) {
        return false;
    } else if (choices.contains("W") && x == 0) {
        return false;
    } else if (choices.contains("E") && x == 7) {
        return false;
    } else {
        return true;
    }
}

和我调用wall()， inside move()

这是我所有的代码:

import java.util.*;
public class test {
private static String[][] board;
private static final int ROWS = 8;
private static final int COLUMNS = 8;
int moves = 0;
List<String> orientation = Arrays.asList(new String[]{"N", "E", "W", "S"});
List<String> choices = new ArrayList<String>(3);

public test() {
    //String state = "d";
    board = new String[ROWS][COLUMNS];
    for (int i = 0; i < ROWS; i++) {
        for (int j = 0; j < COLUMNS; j++) {
            board[i][j] = " ";
        }
    }
    board[4][4] = "d";
    board[0][2] = "d";
    board[4][7] = "d";
    board[1][5] = "d";
    board[6][6] = "d";
    board[4][0] = "d";
}
public String toString() {
    String r = "";
    for (int i = 0; i < ROWS; i++) {
        for (int j = 0; j < COLUMNS; j++) {
            r += "[" + board[i][j] + "]";
        }
        r += "n";
    }
    return r;
}
public int[] gostright(int x, int y) {
    if (choices.contains("N")) {
        x--;
        if (x == -1) {
            x = 0;
        }
    } else if (choices.contains("W")) {
        y--;
        if (y == -1) {
            y = 0;
        }
    } else if (choices.contains("S")) {
        x++;
        if (x == 8) {
            x = 7;
        }
    } else if (choices.contains("E")) {
        y++;
        if (y == 8) {
            y = 7;
        }
    }
    System.out.println("choise taste equal" + x + ":" + y);
    return new int[]{x, y};
}
public boolean Wall(int x, int y) {
    if (choices.contains("N") && y == 7) {
        return false;
    } else if (choices.contains("S") && y == 0) {
        return false;
    } else if (choices.contains("W") && x == 0) {
        return false;
    } else if (choices.contains("E") && x == 7) {
        return false;
    } else {
        return true;
    }
}
public int CountDirt() {
    int count = 0;
    for (int i = 0; i < ROWS; i++) {
        for (int j = 0; j < COLUMNS; j++) {
            if (board[i][j] == "d") {
                count++;
            }
        }
    }
    // System.out.println("the found dirt " + count+" dirts");
    return count;
}
public void Move() {
    Collections.shuffle(orientation);
    int nowX = 4, nowY = 4;
    int counter = 0;
    int strightCounter = 1;
    int wallx = 0;
    int wally = 0;
    while (CountDirt() > 0) {
        for (int i = 0; i < 3; i++) {
            choices.add(orientation.get(i));
            for (int x = 0; x < strightCounter; x++) {
                for (int y = 0; y < strightCounter; y++) {
                   if(Wall(wallx,wally))  {
                       break;
                   }              
                    System.out.println("Wall" + x + ":" + y);
                    board[nowX][nowY] = "1";
                    int[] pos = gostright(nowX, nowY);
                    nowX = pos[0];
                    nowY = pos[1];
                    System.out.println("" + nowX + ":" + nowY);
                    System.out.println("nowX and nowY" + board[nowX][nowY]);
                    board[nowX][nowY] = "#";
                    moves++;
                    System.out.println(toString());
                    System.out.println(orientation.get(i));
                    System.out.println("Choices " + choices);
                    System.out.println("# move" + moves);
                }
            }
            counter++;
            System.out.println("CountDirt()==" + CountDirt());

        }
        choices.clear();
    }
}

我认为问题在移动()，但不确定它到底在哪里

Answer 1

我只看到wallx在此代码中出现了两次。int wallx = 0;和if(Wall(wallx,wally))。这意味着您总是向Wall()传递0和0。