Rudimentary Entity-Component-model in CoffeeScript

gistfile1.coffee

class Entity
  componentList = {}

  constructor: (@name = @constructor.name) ->

  get: (componentName) -> 
    if componentName
      componentList[componentName]
    else
      Object.keys componentList

  add: (component) ->
    return @ unless component

    unless componentList[component.name]
      componentList[component.name] = component
      component.register?()

    @
    
  remove: (componentName) ->
    if componentList[componentName]
      componentList[componentName].unregister?()
      delete componentList[componentName]

    @

  render: ->
    for key, value of componentList
      value.render?()

    null
  update: (dt) ->
    for key, value of componentList
      value.update?(dt)

    null

class Component
  constructor: (@name = @constructor.name) ->

  register: ->
  unregister: ->

  render: ->
  update: (dt) ->