Simple TileMap

tilemap.js

define('tilemap', function() {

  var TileMap = (function() {

    var TileMap = function(width, height) {
      if (width == null) {
        width = {
          min: 0,
          max: 4
        };
      }

      if (height == null) {
        height = {
          min: 0,
          max: 4
        };
      }

      this.tile = [];
      this.generateTiles(width, height);
    };

    TileMap.defaultType = 'empty';

    TileMap.prototype.generateTiles = function(width, height) {
      for (var x = width.min, xl = width.max - 1; x < xl; x++) {
        for (var y = height.min, yl = height.max - 1; y < yl; y++) {
          this.tile[x] = this.tile[x] || [];
          this.tile[x].push(TileMap.defaultType);
        }
      }
    };

    TileMap.prototype.each = function(callback) {
      this.map(callback);
      return;
    };
    
    TileMap.prototype.map = function(callback) {
      var result = [];
      
      var tile = this.tile;
      for (var x = 0, xl = tile.length; x < xl; x++) {
        (function(tileY) {
          for (var y = 0, yl = tileY.length; y < yl; y++) {
            result.push(callback(x, y, tile[x][y]));
          }
        })(tile[x]);
      }
      
      return result;
    };

    TileMap.prototype.flatten = function() {
      return this.map(function(x, y, content) {
        return content;
      });
    };

    TileMap.prototype.flattenWithModifier = function() {
      return this.map(function(x, y, content) {
        return {
          x: x,
          y: y,
          type: content
        }
      });
    };

    return TileMap;

  })();

  return TileMap;

});