莱昂哈德（Leonhard）喜欢迷宫

背景

我的儿子Leonhard（4岁）喜欢迷宫。我不知道他从哪里知道迷宫，但他画了迷宫并且很清楚它们是如何工作的：

最近，他开始用绘画创作游戏。这些是他的规则：

黑色正方形表示起点。
钩子表示迷宫的出口（在那儿您会被拉出）。
你可以收集冠冕。
您可以收集金块（圆形的东西）。
您可以前进和后退，但不止于此。
箭头可能会指引您前往出口。（如果他画迷宫供我解决，它们常常会误导人）。

带注释的版本：

蓝色：起点
橙色：冠
黄色：有金块的区域
绿色：挂钩（退出）
粉色：箭头（主要是误导性的）

带注释的迷宫

任务

也许您知道，在4岁时，孩子们开始讲猪肉，有时他不遵守自己的规则，尤其是当他发现自己再也无法到达迷宫的尽头时。

那就是您的角色：既然我一直在为孩子们寻找游戏，那么您会将他的想法变成不可能作弊的游戏。

好吧，我们还需要一些其他的定义：

运动场是一个n* m大小相等的正方形矩形。
一个正方形可以有0到4面墙，每面一面。
一冠价值50分。
一个金块值得20分。
在已经走过的广场上行走会减去1分。
标记正方形以标识玩家在其上行走的频率（0、1或2次）
玩家可以沿着4个方向行走，除非有墙。
输入设备可以是任何东西。请考虑键盘支持。
迷宫必须是可解决的。即，必须有可能从起点到达钩子，并且必须有可能收集所有贵重物品（即使那不会导致最高的得分）。
如果玩家卡住，游戏将结束。
玩家不得因掉下棋而丧命。您可以随心所欲地在完整的迷宫周围放置一堵墙或包裹边缘。
程序将单词（0-65535）自变量作为输入。这是随机数生成器的种子。再次使用相同的种子调用程序会导致相同的迷宫。

奖金：

计算可以收集的最高分。考虑到由于-1分，最好不要收集所有物品。
显示最佳解决方案（以最快的方式获得最高分）

规则

这是一次人气竞赛，因为我希望能够阅读和理解代码并可能适应我儿子的新想法。对不起，打高尔夫球的人，也许您想使用更适合打高尔夫球的规则创建此问题的副本，例如，定义了所有角色的控制台版本。

5月3日最受欢迎的游戏将成为公认的答案。而且，为什么不将其发布在应用商店中？

popularity-contest game board-game

— 托马斯·韦勒
source

我觉得这可能是一场艺术竞赛与一场编程竞赛之间的激烈竞争。既然所有这些游戏的行为都应以几乎相同的方式进行，那么除了看起来多么好看之外，我还必须出于什么理由投票赞成？制作这款迷宫游戏似乎没有太多潜在的创造力。就是说，我更喜欢高尔夫球手，所以我会让那些经常参加流行音乐表演的人决定这是否是热门话题。

— FryAmTheEggman 2015年

应对挑战有两个不同的部分：一个是迷宫设计（但是很难通过算法产生令人满意的游戏迷宫），另一个是游戏引擎（这很容易）。我认为将挑战限制在游戏引擎上（并使其成为代码高尔夫）会更好。您需要在问题中张贴一些示例迷宫（作为文本文件的输入）（可能是由您自己设计的）儿子的帮助。）

— Level River St

相关的（也许是迷宫设计部分的部分重复）codegolf.stackexchange.com/q/25967/15599

— Level River St

我认为这是一个巨大的挑战。它有几个要解决的问题和创造空间。像这样的更多挑战，请+1。[返回构建解决方案...]

— 逻辑骑士

我们是否需要生成“箭头”。它们是否允许玩家以其他方式越过它们？

— TheNumberOne

Answers:

的JavaScript

工作正在进行中。不幸的是，迷宫并非总能解决-前进的极限才是真正的障碍。

编辑1化妆品
编辑2更好的游戏玩法，但最大的问题仍然存在

var rows, columns, rowOfs, maze, plPos, points, playing

$('#BNEW').on('click', function() {
    NewMaze();
});
$('#BREP').on('click', function() {
    Start();
});

$(document).on('keydown', function(e) {
    var ok, move, pxy, mz, $td
    switch (e.which)
    {
    case 37:
        (move = -1, ok = maze[plPos+move] < 9 && maze[plPos+move*2] < 9);
        break;
    case 39:
        (move = 1, ok = maze[plPos+move] < 9 && maze[plPos+move*2] < 9);
        break;
    case 38: 
        (move = -rowOfs, ok = maze[plPos+move] < 9 && maze[plPos+move*2] < 9);
        break;
    case 40: 
        (move = rowOfs, ok = maze[plPos+move] < 9 && maze[plPos+move*2] < 9);
        break;
    }
    if (playing && ok)
    {
        pxy = getXY(plPos)
        mz = maze[plPos] < 8 ? 8 : 9;
        $td = $('#Field table tr').eq(pxy.y).find('td').eq(pxy.x)
        $td.addClass("m"+mz);
        maze[plPos] = mz;
        maze[plPos+move] = mz;
        plPos += move*2;
        mz = maze[plPos];
        PTS.value = mz==7 ? points += 20 : mz==6 ? points += 50 : mz == 8 ? points -= 1 : points;
        
        pxy = getXY(plPos)
        $td = $('#Field table tr').eq(pxy.y).find('td').eq(pxy.x)
        $td.removeClass("m6 m7")
        $('#Player').finish().animate(playerCss(pxy.x,pxy.y));
        CheckEndGame();
    }
    return !move
});

function CheckEndGame()
{
  var msg = ''
  if (maze[plPos] == 5)
  {
      msg = "Maze completed!";
  }
  else if (maze[plPos+1]==9 && maze[plPos-1]==9
        && maze[plPos+rowOfs]==9 && maze[plPos-rowOfs]==9)
  {
      msg = "You are stuck, try again!";
  }
  if (msg) {
    $("#Msg").text(msg).show();
    playing=false
  }
}

function seed(s) {
    return function() {
        s = Math.sin(s) * 10000; return s - Math.floor(s);
    };
};

function Build()
{
    var i
    var Fill = function(p)
    {
        var d=[rowOfs,-rowOfs,1,-1], i, s, l
        maze[p] = 1
        while(d[0])
        {
            i = random()*d.length|0
            s = d[i]
            if (s != (l=d.pop())) d[i]=l
            if (maze[p+s+s]>8) {
                maze[p+s] = 1, Fill(p+s+s)
            }
        }
    }
    rowOfs = (columns + 1) * 2
    maze = Array(rowOfs * (rows*2+1))
    for (i=0; i < maze.length; i++)
        maze[i] = i % rowOfs? 9 : 0
    Fill(rowOfs+2)
}

function NewMaze()
{
    SEED.value = Math.random()*65536 | 0
    Start()
}
    
function Start()
{
    var sd = SEED.value || 1
    columns = COLS.value |0 || 18
    rows = ROWS.value | 0 || 12
    COLS.value = columns
    ROWS.value = rows
    random = seed(sd)
    PTS.value = points = 0
    $("#Msg").hide();

    Build()
    
    plx = random()*columns|0;
    ply = random()*rows|0;
    setPlayer(plx,ply);
    plPos = getPos(plx,ply);
    BlockTriples(plPos);
    AddItems(plPos);
    Draw();
    playing = true;
  
}

function AddItems(p)
{
    var d=[rowOfs,-rowOfs,1,-1]
    var cells=[]
    // scan all reachable cells and calc distance from start
    var Go = function(p,l)
    {
        var i,t,mark,r
        ++l
        cells.push([p,l])
            
        maze[p] = 8;
        for(i=0; d[i]; i++)
        {
            t = d[i]
            if (maze[p+t]<2 && maze[p+t+t]<2) 
            {
                Go(p+t+t, l)
            }
        }
        maze[p] = 0;
    } 
    Go(p,0)
    cells.sort(function(a,b){return a[1]-b[1]})
    cells=cells.slice(10) // cut the shortest distances 
    r = random()*10|0; //exit
    r = cells.length-r-1
    maze[cells[r][0]] = 5;
    console.log(r)
    cells = cells.slice(0,r)
    var ncr = rows, nnu = columns
    for(i = ncr+nnu; i; i--) 
    {
        r = random()*cells.length|0
        maze[cells[r][0]] = (i > ncr ? 7 : 6);
        cells[r] = cells.pop();
    }
    
    
}

function BlockTriples(p)
{
    var d=[rowOfs,-rowOfs,1,-1]
    var Go = function(p)
    {
        var i,t,size=[0,0,0,0],s=1,nw=0,min,minp
        maze[p] = 8
        for(i=0; d[i]; i++)
        {
            t = d[i]
            if (maze[p+t]<9 && maze[p+t+t]<8) 
            {
                ++nw
                s += size[i] = Go(p+t+t)
            }
        }
        if (nw > 2) // triple way, block the smallest
        {
            for(i=0,min=1e6; d[i]; i++)
                size[i] && size[i] < min && (min = size[minp = i])
            maze[p + d[minp]] = 5;
        }
        maze[p]=0
        return s
    } 
    Go(p)
}
    
function Draw()
{    
    var q=[], i, x, y;
    for(i = rowOfs+2, y = 0; y < rows; y++)
    {
        q.push('<tr>')
        for (x = 0; x < columns; i += 2, x++)
        {
            tcl = 'm'+(maze[i]|0)       
            maze[i-1]>8 && (tcl += ' wl')
            maze[i+1]>8 && (tcl += ' wr')
            maze[i-rowOfs]>8 && (tcl += ' wu')
            maze[i+rowOfs]>8 && (tcl += ' wb')
            q.push('<td class="'+tcl+'"></td>')
        }
        q.push('</tr>')
        i += rowOfs+2
    }
    $("#TOUT").html(q.join(''));
    $("#Field").show();
}

function setPlayer(posx, posy)
{
    $('#Player').css(playerCss(posx, posy));
}    

function getXY(pos)
{
    return { x: (plPos % rowOfs)/2-1, y: plPos / rowOfs / 2 | 0}
}

function getPos(x, y)
{
   return (x+y*rowOfs)*2 + rowOfs+2;
}

function playerCss(posx, posy)
{
    return{ left: 6+posx*21, top: posy*21+2};
}

input { width: 3em; margin-right:1em }
table { 
  border: 2px solid #000; 
  border-collapse: collapse;
  font-size: 8px }
#Field { 
  margin: 10px; 
  position: relative;
  display: none;
}
td { 
    width: 19px; height: 19px; 
    padding: 0; margin: 0; 
    text-align: center;
}
td.wl { border-left: 2px solid #444; background: #fff }
td.wr { border-right: 2px solid #444; background: #fff }
td.wt { border-top: 2px solid #444;; background: #fff }
td.wb { border-bottom: 2px solid #444; background: #fff }
td.m7 { background: #ffd url(http://i.stack.imgur.com/QUInh.png) -21px 0}
td.m6 { background: #efe url(http://i.stack.imgur.com/QUInh.png) -1px 0}
td.m5 { background: #ddf url(http://i.stack.imgur.com/QUInh.png) -40px 0}
td.m8 { background: #eed }
td.m9 { background: #f55 }
#Player { position: absolute; top:0; left:0; color: #007; background: #fcb; font-size:12px }
#Msg { color: red; font-size:40px; display:none;  }

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
ID:<input id=SEED>
Rows:<input id=ROWS>
Columns:<input id=COLS>
<button id=BNEW>New</button>
<button id=BREP>Replay</button>
<div id=Msg></div>
<div id=Field>
<table id=TOUT border=0 cellspacing=0 cellpadding=0>
</table>
<span id=Player>⛄</span>    
</div>
Score: <input readonly id=PTS>

展开摘要

— edc65
source

做得好，令人印象深刻。👍🏼我不了解如何创建迷宫。该部分如何工作？

— CousinCocaine 2015年

@CousinCocaine Build函数使用递归填充，这是构建简单连接的迷宫的更“经典”方式-请参阅en.wikipedia.org/wiki/Maze_generation_algorithm

— edc65 2015年

我儿子喜欢它。虽然他要我打印较大尺寸的迷宫，但他还是在线玩较小的迷宫。根据规则，您的答案是5月3日的最佳答案，所以我现在接受了。由于它也是唯一的答案，因此您可以获得赏金。干得好，太神奇了。

— 托马斯·韦勒2015年

非常感谢您，很高兴您的儿子喜欢它。现在该提高出价了。

— edc65

爪哇

我从来没有抱怨过GolfScript或CJam，但是无论如何，这是一个Java答案。这是一个非常令人愉快的挑战。;）

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.geom.Ellipse2D;
import java.util.*;
import javax.swing.*;

public class MazeMaker {
    int row, col, exitRow, exitCol, numCells, score, array[][];
    final int SQWIDTH = 20;
    boolean gameOver = true;
    Ellipse2D.Double ellipse;
    JFrame frame;
    JPanel mazePanel;
    JLabel scoreLabel;

    public MazeMaker() {
        frame = new JFrame("Maze");
        frame.setLayout(new BorderLayout());
        JPanel topPanel = createTopPanel();
        frame.add(topPanel,BorderLayout.NORTH);

        createMazePanel();
        frame.add(new JScrollPane(mazePanel),BorderLayout.CENTER);

        setKeyActions();

        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.pack();
        frame.setVisible(true);
    }

    private void constructArray(int seed, int rows, int cols) {
        array = new int[rows*2-1][cols*2-1];
        for (int[] a : array)
            Arrays.fill(a,-1);
        numCells = (array.length / 2 + 1) * (array[0].length / 2 + 1);
        Random rand = new Random(seed);
        int row = rand.nextInt(array.length / 2 + 1) * 2;
        int col = rand.nextInt(array[0].length / 2 + 1) * 2;
        array[row][col] = 0;
        boolean first = true, a = false, exitFound = false;

        while (true) {
            if (first) {
                int direction = rand.nextInt(4);
                if (direction == 0 && row != 0) {
                    array[row-1][col] = 0;
                    array[row-2][col] = 0;
                    row -= 2;
                    first = false;
                }
                else if (direction == 1 && col != array[0].length - 1) {
                    array[row][col+1] = 0;
                    array[row][col+2] = 0;
                    col += 2;
                    first = false;
                }
                else if (direction == 2 && row != array.length - 1) {
                    array[row+1][col] = 0;
                    array[row+2][col] = 0;
                    row += 2;
                    first = false;
                }
                else if (direction == 3 && col != 0) {
                    array[row][col-1] = 0;
                    array[row][col-2] = 0;
                    col -= 2;
                    first = false;
                }
            }
            else {
                int availableCells = 0;
                boolean up = false, down = false, left = false, right = false;
                if (row != 0 && array[row-2][col] == -1) {
                    availableCells++;
                    up = true;
                }

                if (col != array[0].length-1 && array[row][col+2] == -1) {
                    availableCells++;
                    right = true;
                }

                if (row != array.length-1 && array[row+2][col] == -1) {
                    availableCells++;
                    down = true;
                }

                if (col != 0 && array[row][col-2] == -1) {
                    availableCells++;
                    left = true;
                }

                if (availableCells != 0) {
                    a = true;
                    while (true) {
                        boolean[] b = {up,right,down,left};
                        int i = rand.nextInt(4);
                        if (b[i]) {
                            if (i == 0) {
                                array[row-1][col] = 0;
                                array[row-2][col] = 0;
                                row -= 2;
                            }
                            else if (i == 1) {
                                array[row][col+1] = 0;
                                array[row][col+2] = 0;
                                col += 2;
                            }
                            else if (i == 2) {
                                array[row+1][col] = 0;
                                array[row+2][col] = 0;
                                row += 2;
                            }
                            else if (i == 3) {
                                array[row][col-1] = 0;
                                array[row][col-2] = 0;
                                col -= 2;
                            }
                            break;
                        }
                    }
                }
                else {
                    array[row][col] = 1;
                    if (!exitFound && a) {
                        if (new Random().nextInt(5) == 0) {
                            exitFound = true;
                            exitRow = row;
                            exitCol = col;
                        }
                    }
                    a = false;
                    if (row != 0 && array[row-1][col] == 0 && (array[row-2][col] == 0 || array[row-2][col] == 1)) {
                        array[row-1][col] = 1;
                        array[row-2][col] = 1;
                        row -= 2;
                    }
                    else if (col != array[0].length-1 && array[row][col+1] == 0 && (array[row][col+2] == 0 || array[row][col+2] == 1)) {
                        array[row][col+1] = 1;
                        array[row][col+2] = 1;
                        col += 2;
                    }
                    else if (row != array.length-1 && array[row+1][col] == 0 && (array[row+2][col] == 0 || array[row+2][col] == 1)) {
                        array[row+1][col] = 1;
                        array[row+2][col] = 1;
                        row += 2;
                    }
                    else if (col != 0 && array[row][col-1] == 0 && (array[row][col-2] == 0 || array[row][col-2] == 1)) {
                        array[row][col-1] = 1;
                        array[row][col-2] = 1;
                        col -= 2;
                    }
                }
                if (checkDone()) {
                    if (!exitFound) {
                        exitRow = row;
                        exitCol = col;
                    }
                    break;
                }
            }
        }
    }

    private boolean checkDone() {
        int count = 0;
        for (int k = 0; k < array.length; k+=2) {
            for (int l = 0; l < array[0].length; l+=2) {
                if (array[k][l] == 0 || array[k][l] == 1)
                    count++;
            }
        }
        return count == numCells;
    }

    private JPanel createTopPanel() {
        GridBagLayout l = new GridBagLayout();
        GridBagConstraints c = new GridBagConstraints();
        c.fill = GridBagConstraints.BOTH;

        JPanel panel = new JPanel(l);
        JLabel inputLabel = new JLabel("ID:");
        c.gridwidth = 1;
        l.setConstraints(inputLabel,c);
        panel.add(inputLabel);

        JTextField inputField = new JTextField(5);
        l.setConstraints(inputField,c);
        panel.add(inputField);

        JLabel rowLabel = new JLabel("Rows:");
        l.setConstraints(rowLabel,c);
        panel.add(rowLabel);

        JTextField rowField = new JTextField(3);
        l.setConstraints(rowField,c);
        panel.add(rowField);

        JLabel colLabel = new JLabel("Columns:");
        l.setConstraints(colLabel,c);
        panel.add(colLabel);

        JTextField colField = new JTextField(3);
        l.setConstraints(colField,c);
        panel.add(colField);

        JButton applyButton = new JButton("Apply");
        applyButton.addActionListener(ev -> {
            try {
                int seed = Integer.parseInt(inputField.getText()),
                    rows = Integer.parseInt(rowField.getText()),
                    cols = Integer.parseInt(colField.getText());
                if (seed >= 0 && rows >= 3 && cols >= 3) {
                    gameOver = false;
                    scoreLabel.setText("Score: " + (score = 0));
                    constructArray(seed,rows,cols);
                    row = (int) (Math.random() * (array.length / 2 + 1)) * 2;
                    col = (int) (Math.random() * (array[0].length / 2 + 1)) * 2;
                    frame.setSize((1+SQWIDTH * array[0].length)/2 > 750 ? (1+SQWIDTH * array[0].length)/2 : 750,
                            75+(1+SQWIDTH * array.length)/2);
                    mazePanel.setPreferredSize(new Dimension(
                            (1+SQWIDTH * array[0].length)/2 > 750 ? (1+SQWIDTH * array[0].length)/2 - 15 : 750,
                            15+(1+SQWIDTH * array.length)/2));
                    ellipse = new Ellipse2D.Double(col*SQWIDTH/2+3,row*SQWIDTH/2+3,10,10);
                    setItems();
                    mazePanel.repaint();
                }
            } catch (NumberFormatException ignore) {}
        });
        l.setConstraints(applyButton,c);
        panel.add(applyButton);

        scoreLabel = new JLabel("Score: ");
        c.gridwidth = GridBagConstraints.REMAINDER;
        l.setConstraints(scoreLabel,c);
        panel.add(scoreLabel);

        return panel;
    }

    private void createMazePanel() {
        mazePanel = new JPanel() {
            @Override
            protected void paintComponent(Graphics g) {
                super.paintComponent(g);
                int x = 0, y = 0;
                if (!gameOver) {
                    for (int k = 0; k < array.length; k+=2) {
                        for (int l = 0; l < array[0].length; l+=2) {
                            int n = array[k][l];
                            if (n == 0 || n == 1 || n == 4 || n == 5 || n == 6)
                                g.setColor(Color.white);
                            else if (n == 2)
                                g.setColor(Color.green);
                            else if (n == 3)
                                g.setColor(Color.red);
                            g.fillRect(x, y, SQWIDTH, SQWIDTH);
                            if (n == 4) {
                                g.setColor(new Color(245,209,34));
                                g.fillOval(x+3, y+3, 10, 10);
                            }
                            else if (n == 5) {
                                g.setColor(new Color(255,223,55));
                                g.fillPolygon(new int[]{x,x+3,x+8,x+13,x+16,x+14,x+2},new int[]{y+2,y+6,y+2,y+6,y+2,y+16,y+16},7);
                                g.setColor(new Color(12,234,44));
                                g.fillOval(x+7,y+6,4,7);
                            }
                            else if (n == 6) {
                                Graphics2D g2 = (Graphics2D) g.create();
                                g2.setStroke(new BasicStroke(2,BasicStroke.CAP_ROUND,BasicStroke.JOIN_ROUND));
                                g2.setColor(new Color(108,225,119));
                                g2.drawOval(x+5, y+1, 8, 8);
                                g2.drawLine(x+5, y+3, x+5, y+11);
                                g2.drawArc(x+5, y+8, 7, 7, 180, 180);
                            }
                            g.setColor(Color.black);
                            if (k != array.length-1 && array[k+1][l] == -1)
                                g.fillRect(x-3, y+SQWIDTH-3, SQWIDTH+3, 3);
                            if (l != array[0].length-1 && array[k][l+1] == -1)
                                g.fillRect(x+SQWIDTH-3,y,3,SQWIDTH);
                            x += SQWIDTH;
                        }
                        x = 0;
                        y += SQWIDTH;
                    }
                    g.setColor(Color.red);
                    ((Graphics2D) g).fill(ellipse);
                }
            }
        };
    }

    private void setKeyActions() {
        InputMap im = mazePanel.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW);
        ActionMap am = mazePanel.getActionMap();

        im.put(KeyStroke.getKeyStroke("pressed UP"), "up");
        am.put("up", new AbstractAction() {
            @Override
            public void actionPerformed(ActionEvent ev) {
                if (row != 0 && array[row-1][col] != -1 && array[row-2][col] != 3 && !gameOver) {
                    int n = array[row][col];
                    array[row][col] = n == 0 || n == 1 || n == 4 || n == 5 ? 2 : 3;
                    row -= 2;
                    n = array[row][col];
                    if (n == 4)
                        scoreLabel.setText("Score: " + (score += 20));
                    else if (n == 5)
                        scoreLabel.setText("Score: " + (score += 50));
                    else if (n == 2)
                        scoreLabel.setText("Score: " + (score -= 1));
                    ellipse.y = row * SQWIDTH/2 + 3;
                    mazePanel.repaint();
                }
                if (!gameOver && array[row][col] == 6) {
                    JOptionPane.showMessageDialog(frame, "Huzzah! You found the exit! ", "Finish", JOptionPane.PLAIN_MESSAGE);
                    gameOver = true;
                }
                else if (!gameOver && checkGameOver()) {
                    JOptionPane.showMessageDialog(frame, "You got trapped! Try again!", "Game over", JOptionPane.PLAIN_MESSAGE);
                    gameOver = true;
                }
            }
        });

        im.put(KeyStroke.getKeyStroke("pressed RIGHT"), "right");
        am.put("right",new AbstractAction() {
            @Override
            public void actionPerformed(ActionEvent ev) {
                if (col != array[0].length-1 && array[row][col+1] != -1 && array[row][col+2] != 3 && !gameOver) {
                    int n = array[row][col];
                    array[row][col] = n == 0 || n == 1 || n == 4 || n == 5 ? 2 : 3;
                    col += 2;
                    n = array[row][col];
                    if (n == 4)
                        scoreLabel.setText("Score: " + (score += 20));
                    else if (n == 5)
                        scoreLabel.setText("Score: " + (score += 50));
                    else if (n == 2)
                        scoreLabel.setText("Score: " + (score -= 1));
                    ellipse.x = col * SQWIDTH/2 + 3;
                    mazePanel.repaint();
                }
                if (!gameOver && array[row][col] == 6) {
                    JOptionPane.showMessageDialog(frame, "Huzzah! You found the exit! ", "Finish", JOptionPane.PLAIN_MESSAGE);
                    gameOver = true;
                }
                else if (!gameOver && checkGameOver()) {
                    JOptionPane.showMessageDialog(frame, "You got trapped! Try again!", "Game over", JOptionPane.PLAIN_MESSAGE);
                    gameOver = true;
                }
            }
        });

        im.put(KeyStroke.getKeyStroke("pressed DOWN"), "down");
        am.put("down", new AbstractAction() {
            @Override
            public void actionPerformed(ActionEvent ev) {
                if (row != array.length-1 && array[row+1][col] != -1 && array[row+2][col] != 3 && !gameOver) {
                    int n = array[row][col];
                    array[row][col] = n == 0 || n == 1 || n == 4 || n == 5 ? 2 : 3;
                    row += 2;
                    n = array[row][col];
                    if (n == 4)
                        scoreLabel.setText("Score: " + (score += 20));
                    else if (n == 5)
                        scoreLabel.setText("Score: " + (score += 50));
                    else if (n == 2)
                        scoreLabel.setText("Score: " + (score -= 1));
                    ellipse.y = row * SQWIDTH/2 + 3;
                    mazePanel.repaint();
                }
                if (!gameOver && array[row][col] == 6) {
                    JOptionPane.showMessageDialog(frame, "Huzzah! You found the exit! ", "Finish", JOptionPane.PLAIN_MESSAGE);
                    gameOver = true;
                }
                else if (!gameOver && checkGameOver()) {
                    JOptionPane.showMessageDialog(frame, "You got trapped! Try again!", "Game over", JOptionPane.PLAIN_MESSAGE);
                    gameOver = true;
                }
            }
        });

        im.put(KeyStroke.getKeyStroke("pressed LEFT"), "left");
        am.put("left",new AbstractAction() {
            @Override
            public void actionPerformed(ActionEvent ev) {
                if (col != 0 && array[row][col-1] != -1 && array[row][col-2] != -1 && !gameOver) {
                    int n = array[row][col];
                    array[row][col] = n == 0 || n == 1 || n == 4 || n == 5 ? 2 : 3;
                    col -= 2;
                    n = array[row][col];
                    if (n == 4)
                        scoreLabel.setText("Score: " + (score += 20));
                    else if (n == 5)
                        scoreLabel.setText("Score: " + (score += 50));
                    else if (n == 2)
                        scoreLabel.setText("Score: " + (score -= 1));
                    ellipse.x = col * SQWIDTH/2 + 3;
                    mazePanel.repaint();
                }
                if (!gameOver && array[row][col] == 6) {
                    JOptionPane.showMessageDialog(frame, "Huzzah! You found the exit! ", "Finish", JOptionPane.PLAIN_MESSAGE);
                    gameOver = true;
                }
                else if (!gameOver && checkGameOver()) {
                    JOptionPane.showMessageDialog(frame, "You got trapped! Try again!", "Game over", JOptionPane.PLAIN_MESSAGE);
                    gameOver = true;
                }
            }
        });
    }

    private void setItems() {
        array[exitRow][exitCol] = 6;
        Random r = new Random();
        for (int k = 1; k < (array.length * array[0].length) / 20; k++) {
            int row = r.nextInt(array.length / 2 + 1) * 2,
                col = r.nextInt(array[0].length / 2 + 1) * 2;
            if ((row == this.row && col == this.col) || array[row][col] == 4 || array[row][col] == 5 || array[row][col] == 6)
                k--;
            else
                array[row][col] = r.nextInt(2) + 4;
        }
    }

    private boolean checkGameOver() {
        if (row == 0 && col == 0)
            return (array[row+2][col] == 3 && array[row][col+2] == 3) ||
                   (array[row+1][col] == -1 && array[row][col+2] == 3) ||
                   (array[row+2][col] == 3 && array[row][col+1] == -1);
        else if (row == 0 && col == array[0].length-1)
            return (array[row+2][col] == 3 && array[row][col-2] == 3) ||
                   (array[row+1][col] == -1 && array[row][col-2] == 3) ||
                   (array[row+2][col] == 3 && array[row][col-1] == -1);
        else if (row == array.length-1 && col == 0)
            return (array[row-2][col] == 3 && array[row][col+2] == 3) ||
                   (array[row-1][col] == -1 && array[row][col+2] == 3) ||
                   (array[row-2][col] == 3 && array[row][col+1] == -1);
        else if (row == array.length-1 && col == array[0].length-1)
            return (array[row-2][col] == 3 && array[row][col-2] == 3) ||
                   (array[row-1][col] == -1 && array[row][col-2] == 3) ||
                   (array[row-2][col] == 3 && array[row][col-1] == -1);
        else if (row == 0)
            return (array[row+2][col] == 3 && array[row][col-1] == -1 && array[row][col+1] == -1) ||
                   (array[row+1][col] == -1 && array[row][col-2] == 3 && array[row][col+1] == -1) ||
                   (array[row+1][col] == -1 && array[row][col-1] == -1 && array[row][col+2] == 3) ||
                   (array[row+1][col] == -1 && array[row][col-2] == 3 && array[row][col+2] == 3) ||
                   (array[row+2][col] == 3 && array[row][col-2] == 3 && array[row][col+1] == -1) ||
                   (array[row+2][col] == 3 && array[row][col-1] == -1 && array[row][col+2] == 3) ||
                   (array[row+2][col] == 3 && array[row][col-2] == 3 && array[row][col+2] == 3);
        else if (col == 0)
            return (array[row][col+2] == 3 && array[row-1][col] == -1 && array[row+1][col] == -1) ||
                   (array[row][col+1] == -1 && array[row-2][col] == 3 && array[row+1][col] == -1) ||
                   (array[row][col+1] == -1 && array[row-1][col] == -1 && array[row+2][col] == 3) ||
                   (array[row][col+1] == -1 && array[row-2][col] == 3 && array[row+2][col] == 3) ||
                   (array[row][col+2] == 3 && array[row-2][col] == 3 && array[row+1][col] == -1) ||
                   (array[row][col+2] == 3 && array[row-1][col] == -1 && array[row+2][col] == 3) ||
                   (array[row][col+2] == 3 && array[row-2][col] == 3 && array[row+2][col] == 3);
        else if (row == array.length-1)
            return (array[row-2][col] == 3 && array[row][col-1] == -1 && array[row][col+1] == -1) ||
                   (array[row-1][col] == -1 && array[row][col-2] == 3 && array[row][col+1] == -1) ||
                   (array[row-1][col] == -1 && array[row][col-1] == -1 && array[row][col+2] == 3) ||
                   (array[row-1][col] == -1 && array[row][col-2] == 3 && array[row][col+2] == 3) ||
                   (array[row-2][col] == 3 && array[row][col-2] == 3 && array[row][col+1] == -1) ||
                   (array[row-2][col] == 3 && array[row][col-1] == -1 && array[row][col+2] == 3) ||
                   (array[row-2][col] == 3 && array[row][col-2] == 3 && array[row][col+2] == 3);
        else if (col == array[0].length-1)
            return (array[row][col-2] == 3 && array[row-1][col] == -1 && array[row+1][col] == -1) ||
                   (array[row][col-1] == -1 && array[row-2][col] == 3 && array[row+1][col] == -1) ||
                   (array[row][col-1] == -1 && array[row-1][col] == -1 && array[row+2][col] == 3) ||
                   (array[row][col-1] == -1 && array[row-2][col] == 3 && array[row+2][col] == 3) ||
                   (array[row][col-2] == 3 && array[row-2][col] == 3 && array[row+1][col] == -1) ||
                   (array[row][col-2] == 3 && array[row-1][col] == -1 && array[row+2][col] == 3) ||
                   (array[row][col-2] == 3 && array[row-2][col] == 3 && array[row+2][col] == 3);
        else
            return (array[row-2][col] == 3 && array[row][col+1] == -1 && array[row+1][col] == -1 && array[row][col-1] == -1) ||
                   (array[row-1][col] == -1 && array[row][col+2] == 3 && array[row+1][col] == -1 && array[row][col-1] == -1) ||
                   (array[row-1][col] == -1 && array[row][col+1] == -1 && array[row+2][col] == 3 && array[row][col-1] == -1) ||
                   (array[row-1][col] == -1 && array[row][col+1] == -1 && array[row+1][col] == -1 && array[row][col-2] == 3) ||
                   (array[row-1][col] == -1 && array[row+1][col] == -1 && array[row][col-2] == 3 && array[row][col+2] == 3) ||
                   (array[row-2][col] == 3 && array[row+2][col] == 3 && array[row][col-1] == -1 && array[row][col+1] == -1) ||
                   (array[row-2][col] == 3 && array[row+1][col] == -1 && array[row][col-1] == -1 && array[row][col+2] == 3) ||
                   (array[row-1][col] == -1 && array[row+2][col] == 3 && array[row][col-2] == 3 && array[row][col+1] == -1) ||
                   (array[row-1][col] == -1 && array[row+2][col] == 3 && array[row][col-1] == -1 && array[row][col+2] == 3) ||
                   (array[row-2][col] == 3 && array[row+1][col] == -1 && array[row][col-2] == 3 && array[row][col+1] == -1) ||
                   (array[row-1][col] == -1 && array[row+2][col] == 3 && array[row][col-2] == 3 && array[row][col+2] == 3) ||
                   (array[row-2][col] == 3 && array[row+1][col] == -1 && array[row][col-2] == 3 && array[row][col+2] == 3) ||
                   (array[row-2][col] == 3 && array[row+2][col] == 3 && array[row][col-1] == -1 && array[row][col+2] == 3) ||
                   (array[row-2][col] == 3 && array[row+2][col] == 3 && array[row][col-2] == 3 && array[row][col+1] == -1) ||
                   (array[row-2][col] == 3 && array[row+2][col] == 3 && array[row][col-2] == 3 && array[row][col+2] == 3);
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(MazeMaker::new);
    }
}

创建实际迷宫的过程使用深度优先搜索算法，但采用迭代方法。运作方式如下。

我们从2D int值数组开始，每个元素为-1。选择一个具有偶数索引的随机元素，其值变为0：

-1 -1 -1 -1 -1 -1  0 -1 -1 
-1 -1 -1 -1 -1 -1 -1 -1 -1 
-1 -1 -1 -1 -1 -1 -1 -1 -1 
-1 -1 -1 -1 -1 -1 -1 -1 -1 
-1 -1 -1 -1 -1 -1 -1 -1 -1 
-1 -1 -1 -1 -1 -1 -1 -1 -1 
-1 -1 -1 -1 -1 -1 -1 -1 -1 
-1 -1 -1 -1 -1 -1 -1 -1 -1 
-1 -1 -1 -1 -1 -1 -1 -1 -1

然后程序进入循环，检查可用单元格，直到达到没有可用单元格的状态。这可能会发生多次，也就是开始回溯的时候。这时遇到的所有0变为1。同样在此期间，它确定是否应在该位置放置出口。所以到最后，数组看起来像这样：

 0  0  0  0  0  0  1  1  1 
 0 -1 -1 -1 -1 -1  0 -1  1 
 0  0  0  0  0 -1  0 -1  1 
-1 -1 -1 -1 -1 -1  0 -1  1 
 0  0  0  0  0  0  0 -1  1 
 0 -1 -1 -1 -1 -1 -1 -1  1 
 0 -1  1  1  1  1  1 -1  1 
 0 -1  1 -1  1 -1 -1 -1  1 
 0 -1  1 -1  1  1  1  1  1

当阵列中某些位置的预定数目为1或0时，循环退出。然后，使用数组绘制得到的迷宫：

产生的迷宫

可以很容易地看到数组中的-1代表墙壁，而0和1则代表走廊。物品随机分布在整个迷宫中。红色椭圆是您控制的“玩家”。

为了方便起见，迷宫包装在滚动窗格中，因此，如果大小超过框架的最大大小，则可以滚动查看迷宫的其余部分。

我要说的唯一问题是如何结束游戏检查。我考虑了几种实现方法，但最终还是对所有方法进行了硬编码。我愿意就如何做到这一点提出建议。

— TNT
source

这不会编译。

MazeMaker.java:168: error: cannot find symbol         printArray();         ^   symbol:   method printArray()   location: class MazeMaker

— edc65

@ edc65感谢您让我知道。我确实有一个printArray用来输出数组的方法，但是删除了它，却忘记了删除方法调用。

— TNT 2015年

好的，我现在正在运行。这真好。我正在尝试重新启动保持相同ID的相同迷宫，但似乎无法正常工作。

— edc65

我有这个设置，以便每次按下“应用”按钮时，开始位置和结束位置都是随机的，但是迷宫的布局保持不变。不应该这样吗？

— TNT

我认为这是从完全相同的挑战重新开始的一种方式。我主要关心的是验证挑战是否始终可以解决（我发现很难的原始问题的约束）

— edc65 2015年

蟒蛇

我知道我参加晚会很晚，但是这是我对这个挑战的看法。由于我还没去学习pygame，所以我以文字为基础。它是Python3。将输入更改为raw_input，它也应在python2中工作。

挂钩（出口）用“ J”表示。“ W”是王冠（50）。“ G”是金块（20）。玩家是“ O”。我尝试对播放器使用“ P”，但发现“ O”更容易识别。

我首先使用了标准深度迷宫，然后添加了金，冠，钩和当前玩家位置。我没有执行所有宝藏都能获得的标准。迷宫游戏的屏幕截图

import random

direcs = {'n':[0,-1],
          's':[0,1],
          'w':[-1,0],
          'e':[1,0]}
dirs = ['n','s','e','w']

class maze_space(object):
    def __init__(self):
        self.n = 0
        self.s = 0
        self.e = 0
        self.w = 0
        self.visited = 0
        self.contents = ' '

    def mirror(self,drct,val):
        if drct == 'n' : self.s = val
        if drct == 's' : self.n = val
        if drct == 'e' : self.w = val
        if drct == 'w' : self.e = val

class MazeGame(object):

    def __init__(self,horiz=12,vert=8):
        self.completed = 0
        self.score = 0
        self.grid = [[maze_space() for x in range(horiz)] for y in range(vert)]

        def walk(y,x):
            self.grid[y][x].visited = 1
            drs = self.make_dir_list(y, x)
            random.shuffle(drs)
            for dr in drs:
                yy = y + direcs[dr][1]
                xx = x + direcs[dr][0]
                if not self.grid[yy][xx].visited:
                    setattr(self.grid[y][x], dr, 1)
                    self.grid[yy][xx].mirror(dr, 1)
                    walk(yy, xx)

        y, x = self.pick_row_col()
        walk(y, x)
        self.maze_populate()
        self.printmaze()

    def main_loop(self):
        while not self.completed:
            move = get_move(self.grid, self.cury, self.curx)
            self.make_move(move)
            self.printmaze()

    def pick_row_col(self):
        '''pick a random cell in the grid'''
        row = random.randint(0, len(self.grid) - 1)
        col = random.randint(0, len(self.grid[0]) - 1)
        return row, col

    def make_dir_list(self, y, x):
        '''return list of available move directions'''
        drs = dirs[:]
        if x == 0 : drs.pop(drs.index('w'))
        if y == 0 : drs.pop(drs.index('n'))
        if x == len(self.grid[0]) - 1 : drs.pop(drs.index('e'))
        if y == len(self.grid) - 1 : drs.pop(drs.index('s'))
        return drs

    def maze_populate(self):
        # populate maze with crowns and gold nuggets
        for treasure in ['G', 'W']:
            for _ in range(random.randint(1, len(self.grid[0]))):
                yy, xx = self.pick_row_col()
                self.grid[yy][xx].contents = treasure

        self.cury, self.curx = self.pick_row_col() # start position
        exity, exitx = self.pick_row_col() # hook (exit) position
        #make sure start is not on top of exit
        while self.cury == exity and self.curx == exitx :
            exitx = random.randint(0, len(self.grid[0]) - 1)

        self.grid[self.cury][self.curx].contents = 'O'
        self.grid[exity][exitx].contents = 'J'

    def make_move(self,dr):
        self.grid[self.cury][self.curx].visited += 1
        self.grid[self.cury][self.curx].contents = '.'
            # player has walked twice -> disable
        if self.grid[self.cury][self.curx].visited >= 3:
            self.grid[self.cury][self.curx].contents = 'X'
            drs = self.make_dir_list(self.cury, self.curx)
            for d in drs:
                yyy = self.cury + direcs[d][1]
                xxx = self.curx + direcs[d][0]
                self.grid[yyy][xxx].mirror(d,0)

        yy = self.cury + direcs[dr][1]
        xx = self.curx + direcs[dr][0]
        if self.grid[yy][xx].contents == 'J': self.completed = 1
        if self.grid[yy][xx].contents == 'W': self.score += 50
        if self.grid[yy][xx].contents == 'G': self.score += 20
        if self.grid[yy][xx].contents == '.': self.score -= 1
        self.grid[yy][xx].contents = 'O'
        self.cury, self.curx = yy, xx

    def printmaze(self):
        if self.completed: print('\nMaze complete.  Good job!')
        print('Score: %d'%self.score)
        print('|'+''.join('---' for _ in self.grid[0]))
        for line in self.grid:
            print('|' + ''.join(' %s '%x.contents if x.e else ' %s|'%
                                x.contents for x in line))
            print('|' + ''.join('  -' if x.s else '---' for x in line))

def get_params():
    hor = input('width (default=12): ')
    hor = int(hor) if hor else 12
    ver = input('height (default=8): ')
    ver = int(ver) if ver else 8
    rseed = input('seed : ')
    rseed = int(rseed) if rseed else random.randint(1,65535)
    print(rseed)
    random.seed(rseed)
    print("'J' = hook (exit)\n'O' = Player")
    print("'G' = gold nugget (20 points)\n'W' = Crown (50 points)")
    print('Player may only tread on a given tile twice')
    return hor,ver

def get_move(grid, y, x):
    choice = input('where do you want to move %s q to quit: '%dirs)
    if choice == 'q' : exit()
    if choice in dirs and getattr(grid[y][x],choice): return choice
    return get_move(grid, y, x)

def main():
    hor,ver = get_params()
    maze = MazeGame(hor,ver)
    maze.main_loop()

if __name__ == '__main__':
    main()

— 艾伦·胡佛（Alan Hoover）
source