coffeescript is awesome

code.coffee

class View
  class @Pieces
    @keys = ['floor', 'ceiling', 'side', 'front']
    @floorPieces   = document.getElementsByClassName('floor')[0].children
    @ceilingPieces = document.getElementsByClassName('ceiling')[0].children
    @sidePieces    = document.getElementsByClassName('side')[0].children
    @frontPieces   = document.getElementsByClassName('front')[0].children
    @allPieces = floor: @floorPieces, ceiling: @ceilingPieces, side: @sidePieces, front: @frontPieces
  class @Utils
    @hide = (e) -> e.style.display = 'none'
    @show = (e) -> e.style.display = 'block'    
    @hideGroup = (pieces) -> View.Utils.hide piece for piece in pieces
    @showGroup = (pieces) -> View.Utils.show piece for piece in pieces    
    @hideAll = -> View.Utils.hideGroup View.Pieces.allPieces[key] for key in View.Pieces.keys
    @showAll = -> View.Utils.showGroup View.Pieces.allPieces[key] for key in View.Pieces.keys

class Room
  constructor: (options) -> {@x, @y, @directionLinks, @boundary} = options
  position: -> "#{@x}:#{@y}"

class Rooms
  constructor: (@width, @height) ->
    @length = (@width+1) * (@height+1)
    for w in [0..@width]
      for h in [0..@height]
        directionLinks = north: h is 0, east: h is @width, south: h is @height, west: w is 0
        boundary = if directionLinks.north or directionLinks.east or 
                      directionLinks.south or directionLinks.west then true else false
        options = x: w, y: h, directionLinks: directionLinks, boundary: boundary
        room = new Room(options)
        @[room.position()] = room

code.js

// Generated by CoffeeScript 1.3.3
var Room, Rooms, View;

View = (function() {

  function View() {}

  View.Pieces = (function() {

    function Pieces() {}

    Pieces.keys = ['floor', 'ceiling', 'side', 'front'];

    Pieces.floorPieces = document.getElementsByClassName('floor')[0].children;

    Pieces.ceilingPieces = document.getElementsByClassName('ceiling')[0].children;

    Pieces.sidePieces = document.getElementsByClassName('side')[0].children;

    Pieces.frontPieces = document.getElementsByClassName('front')[0].children;

    Pieces.allPieces = {
      floor: Pieces.floorPieces,
      ceiling: Pieces.ceilingPieces,
      side: Pieces.sidePieces,
      front: Pieces.frontPieces
    };

    return Pieces;

  })();

  View.Utils = (function() {

    function Utils() {}

    Utils.hide = function(e) {
      return e.style.display = 'none';
    };

    Utils.show = function(e) {
      return e.style.display = 'block';
    };

    Utils.hideGroup = function(pieces) {
      var piece, _i, _len, _results;
      _results = [];
      for (_i = 0, _len = pieces.length; _i < _len; _i++) {
        piece = pieces[_i];
        _results.push(View.Utils.hide(piece));
      }
      return _results;
    };

    Utils.showGroup = function(pieces) {
      var piece, _i, _len, _results;
      _results = [];
      for (_i = 0, _len = pieces.length; _i < _len; _i++) {
        piece = pieces[_i];
        _results.push(View.Utils.show(piece));
      }
      return _results;
    };

    Utils.hideAll = function() {
      var key, _i, _len, _ref, _results;
      _ref = View.Pieces.keys;
      _results = [];
      for (_i = 0, _len = _ref.length; _i < _len; _i++) {
        key = _ref[_i];
        _results.push(View.Utils.hideGroup(View.Pieces.allPieces[key]));
      }
      return _results;
    };

    Utils.showAll = function() {
      var key, _i, _len, _ref, _results;
      _ref = View.Pieces.keys;
      _results = [];
      for (_i = 0, _len = _ref.length; _i < _len; _i++) {
        key = _ref[_i];
        _results.push(View.Utils.showGroup(View.Pieces.allPieces[key]));
      }
      return _results;
    };

    return Utils;

  })();

  return View;

}).call(this);

Room = (function() {

  function Room(options) {
    this.x = options.x, this.y = options.y, this.directionLinks = options.directionLinks, this.boundary = options.boundary;
  }

  Room.prototype.position = function() {
    return "" + this.x + ":" + this.y;
  };

  return Room;

})();

Rooms = (function() {

  function Rooms(width, height) {
    var boundary, directionLinks, h, options, room, w, _i, _j, _ref, _ref1;
    this.width = width;
    this.height = height;
    this.length = (this.width + 1) * (this.height + 1);
    for (w = _i = 0, _ref = this.width; 0 <= _ref ? _i <= _ref : _i >= _ref; w = 0 <= _ref ? ++_i : --_i) {
      for (h = _j = 0, _ref1 = this.height; 0 <= _ref1 ? _j <= _ref1 : _j >= _ref1; h = 0 <= _ref1 ? ++_j : --_j) {
        directionLinks = {
          north: h === 0,
          east: h === this.width,
          south: h === this.height,
          west: w === 0
        };
        boundary = directionLinks.north || directionLinks.east || directionLinks.south || directionLinks.west ? true : false;
        options = {
          x: w,
          y: h,
          directionLinks: directionLinks,
          boundary: boundary
        };
        room = new Room(options);
        this[room.position()] = room;
      }
    }
  }

  return Rooms;

})();