agoragames/gist:136525

## gistfile1.js
// callbacks.js should be included before everything else so any file can add callbacks (before the actual triggers for those callbacks are defined)
var Callbacks = {
  // Define the default callback containers
  Hydra : {
    before_fire : [],
    after_fire : [],
    on_error : [],
    on_load : []
  },

  // namespace our Continuation glue
  Continuations : {
     link : function (func, continuation, parameters) {
      return function () {
        // only break the continuation chain if the method explicitly returns false
        if(false !== func.apply(null, parameters)) {
          continuation ()
          return true
        }
        else { return false }
      }
    },

    chain : function (funcs, parameters) {
      var cc = Callbacks.Continuations.pass
      for (var idx = funcs.length - 1; idx >= 0; --idx)
        cc = Callbacks.Continuations.link(funcs[idx], cc, parameters)

      return cc
    },

    pass : function () { }
  },

  /* loc is the array to store the callback on (usually something like
   * Callbacks.Hydra.on_load).
   * Use with something like:
   *
   * Callbacks.add(Callbacks.Hydra.on_load, function() { alert('f1') })
   * Callbacks.add(Callbacks.Hydra.on_load, function() { alert('f2') })
   *
   * and then instantiate from the body-onload event (for example) with:
   *
   * <body onload="Callbacks.start(Callbacks.Hydra.on_load)">
   */
  add : function(loc, callback_function) {
    loc.push(callback_function)
  },

  // return the success of our chain so the calling method can actually do something with it
  start : function(loc, parameters) {
    return Callbacks.Continuations.chain(loc, parameters)()
  }
}
	// callbacks.js should be included before everything else so any file can add callbacks (before the actual triggers for those callbacks are defined)
	var Callbacks = {
	// Define the default callback containers
	Hydra : {
	before_fire : [],
	after_fire : [],
	on_error : [],
	on_load : []
	},

	// namespace our Continuation glue
	Continuations : {
	link : function (func, continuation, parameters) {
	return function () {
	// only break the continuation chain if the method explicitly returns false
	if(false !== func.apply(null, parameters)) {
	continuation ()
	return true
	}
	else { return false }
	}
	},

	chain : function (funcs, parameters) {
	var cc = Callbacks.Continuations.pass
	for (var idx = funcs.length - 1; idx >= 0; --idx)
	cc = Callbacks.Continuations.link(funcs[idx], cc, parameters)

	return cc
	},

	pass : function () { }
	},

	/* loc is the array to store the callback on (usually something like
	* Callbacks.Hydra.on_load).
	* Use with something like:
	*
	* Callbacks.add(Callbacks.Hydra.on_load, function() { alert('f1') })
	* Callbacks.add(Callbacks.Hydra.on_load, function() { alert('f2') })
	*
	* and then instantiate from the body-onload event (for example) with:
	*
	* <body onload="Callbacks.start(Callbacks.Hydra.on_load)">
	*/
	add : function(loc, callback_function) {
	loc.push(callback_function)
	},

	// return the success of our chain so the calling method can actually do something with it
	start : function(loc, parameters) {
	return Callbacks.Continuations.chain(loc, parameters)()
	}
	}