registry.coffee.md

Registry

The registry maps class names to constructors so that data can be reconstituted.

registry = {}

defaultConstructor = GameObject = require "./game_object"

module.exports = Registry =
  register: (name, constructor) ->
    throw "Constructor must be a function" unless typeof constructor is "function"

    if registry[name]?
      console.warn "Overwriting constructor: #{name}"

    registry[name] = constructor

  construct: (entityData) ->
    {class:className} = entityData

    if className?
      if constructor = registry[className]
        constructor(entityData)
      else
        throw "Unregistered constructor: #{className}"
    else
      defaultConstructor(entityData)

Registry.register "GameObject", GameObject