bd/maze.js at master · zhangsgithub04/bd · GitHub

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var game;
var maze = [];
var mazeWidth = 81;
var mazeHeight = 61;
var tileSize = 10;
var mazeGraphics;

window.onload = function() {
	game = new Phaser.Game(810, 610, Phaser.CANVAS, "");
     game.state.add("PlayGame",playGame);
     game.state.start("PlayGame");
}

var playGame = function(game){};

playGame.prototype = {
     create: function(){
          mazeGraphics = game.add.graphics(0, 0);
          var moves = [];
          for(var i = 0; i < mazeHeight; i ++){
               maze[i] = [];
               for(var j = 0; j < mazeWidth; j ++){
                    maze[i][j] = 1;
               }
          }
          var posX = 1;
          var posY = 1;
          maze[posX][posY] = 0;
          moves.push(posY + posY * mazeWidth);
          game.time.events.loop(Phaser.Timer.SECOND/25, function(){
               if(moves.length){
                    var possibleDirections = "";
                    if(posX+2 > 0 && posX + 2 < mazeHeight - 1 && maze[posX + 2][posY] == 1){
                         possibleDirections += "S";
                    }
                    if(posX-2 > 0 && posX - 2 < mazeHeight - 1 && maze[posX - 2][posY] == 1){
                         possibleDirections += "N";
                    }
                    if(posY-2 > 0 && posY - 2 < mazeWidth - 1 && maze[posX][posY - 2] == 1){
                         possibleDirections += "W";
                    }
                    if(posY+2 > 0 && posY + 2 < mazeWidth - 1 && maze[posX][posY + 2] == 1){
                         possibleDirections += "E";
                    }
                    if(possibleDirections){
                         var move = game.rnd.between(0, possibleDirections.length - 1);
                         switch (possibleDirections[move]){
                              case "N":
                                   maze[posX - 2][posY] = 0;
                                   maze[posX - 1][posY] = 0;
                                   posX -= 2;
                                   break;
                              case "S":
                                   maze[posX + 2][posY] = 0;
                                   maze[posX + 1][posY] = 0;
                                   posX += 2;
                                   break;
                              case "W":
                                   maze[posX][posY - 2] = 0;
                                   maze[posX][posY - 1] = 0;
                                   posY -= 2;
                                   break;
                              case "E":
                                   maze[posX][posY + 2]=0;
                                   maze[posX][posY + 1]=0;
                                   posY += 2;
                                   break;
                         }
                         moves.push(posY + posX * mazeWidth);
                    }
                    else{
                         var back = moves.pop();
                         posX = Math.floor(back / mazeWidth);
                         posY = back % mazeWidth;
                    }
                    drawMaze(posX, posY);
               }
          }, this);
     }
}

function drawMaze(posX, posY){
     mazeGraphics.clear();
     mazeGraphics.beginFill(0xcccccc);
     for(i = 0; i < mazeHeight; i ++){
          for(j = 0; j < mazeWidth; j ++){
               if(maze[i][j] == 1){
                    mazeGraphics.drawRect(j * tileSize, i * tileSize, tileSize, tileSize);
               }
          }
     }
     mazeGraphics.endFill();
     mazeGraphics.beginFill(0xff0000);
     mazeGraphics.drawRect(posY * tileSize, posX * tileSize, tileSize, tileSize);
     mazeGraphics.endFill();
}