mud/mud.js

   1 $(document).ready(function(){
   2
   3     var canvas = $('#world')[0];
   4     var c = canvas.getContext('2d');
   5
   6     function player(x, y) {
   7         this.x = x;
   8         this.y = y;
   9
  10         this.move = function(direction) {
  11             var rooms = mud.rooms;
  12             switch (direction) {
  13                 case 'left':
  14                     if (rooms[this.x-1] && rooms[this.x-1][this.y]
  15                             && !rooms[this.x-1][this.y].state) {
  16                         rooms[this.x][this.y].clear();
  17                         rooms[this.x-1][this.y].join();
  18                         this.x++;
  19                     }
  20                     break;
  21                 case 'up':
  22                     if (rooms[this.x][this.y-1]
  23                             && !rooms[this.x][this.y-1].state) {
  24                         rooms[this.x][this.y].clear();
  25                         rooms[this.x][this.y-1].join();
  26                         this.y++;
  27                     }
  28                     break;
  29                 case 'right':
  30                     if (rooms[this.x+1] && rooms[this.x+1][this.y+1]
  31                         && !rooms[this.x+1][this.y].state) {
  32                         rooms[this.x][this.y].clear();
  33                         rooms[this.x+1][this.y].join();
  34                         this.x++;
  35                     }
  36                     break;
  37                 case 'down':
  38                     if (rooms[this.x][this.y+1]
  39                         && !rooms[this.x][this.y+1].state) {
  40                         rooms[this.x][this.y].clear();
  41                         rooms[this.x][this.y+1].join();
  42                         this.y++;
  43                     }
  44                     break;
  45             }
  46         }
  47     }
  48
  49     function room(x, y, h, l) {
  50         this.x = x;
  51         this.y = y;
  52         this.h = h;
  53         this.l = l;
  54         this.state = 0;
  55         this.fill = function() {
  56             c.fillStyle = "rgb(0,0,0)";
  57             c.fillRect(this.x, this.y, this.h, this.l);
  58             this.state = 1;
  59         }
  60         this.clear = function() {
  61             console.log('clearing');
  62             c.fillStyle = "rgb(255,255,255)";
  63             c.fillRect(this.x, this.y, this.h, this.l);
  64             this.state = 0;
  65         }
  66         this.join = function() {
  67             c.fillStyle = "rgb(0,255,0)";
  68             c.fillRect(this.x, this.y, this.h, this.l);
  69         }
  70     }
  71
  72     function universe() {
  73         this.rooms = [];
  74
  75         this.rows = 30;
  76         this.columns = 30;
  77
  78         this.roomWidth = canvas.width / this.rows;
  79         this.roomHeight = canvas.height / this.columns;
  80
  81         for (var i = 0; i < this.columns; i++) {
  82             var column = [];
  83             var x = i * this.roomWidth;
  84             var y = 0;
  85             for (var ii = 0; ii < this.columns; ii++) {
  86                 column.push(new room(x, y, this.roomWidth, this.roomHeight));
  87                 y += this.roomWidth;
  88                 Math.random() > .5 ? column[ii].clear() : column[ii].fill();
  89             }
  90             this.rooms.push(column);
  91         }
  92
  93         this.populate = function(seed) {
  94             for (var i = 0; i < this.rows; i++) {
  95                 for (var ii = 0; ii < this.columns; ii++) {
  96                     seed[i][ii] ? this.rooms[i][ii].clear()
  97                                 : this.rooms[i][ii].fill();
  98                 }
  99             }
 100         }
 101
 102         this.join = function() {
 103             do {
 104                 var x = Math.floor(Math.random()*(this.columns));
 105                 var y = Math.floor(Math.random()*(this.rows));
 106             } while (!this.rooms[x][y].state);
 107             this.rooms[x][y].join();
 108             return player = new player(x,y);
 109         }
 110
 111         $(document).keydown(function(e) {
 112             if (typeof player == undefined) return;
 113             switch (e.which) {
 114                 case 37:
 115                     player.move('left');
 116                     break;
 117                 case 38:
 118                     player.move('up');
 119                     break;
 120                 case 39:
 121                     player.move('right');
 122                     break;
 123                 case 40:
 124                     player.move('down');
 125                     break;
 126                 default:
 127                     return;
 128             }
 129             e.preventDefault();
 130         });
 131     }
 132
 133     var mud = new universe;
 134     var player = mud.join();
 135
 136 });