Some fixes for my accidental merge of #970.

app/lib/Buddha.coffee

@@ -72,7 +72,7 @@ class Angel
     return if @aborting
     unless serialized
       # We're only interested in goalStates. (Simulator)
-      @latestGoalStates = goalStates;
+      @latestGoalStates = goalStates
       Backbone.Mediator.publish('god:goals-calculated', goalStates: goalStates)
       @running = false
       @shared.busyAngels.pop @
@@ -95,7 +95,7 @@ class Angel
     @shared.goalManager?.world = world
     @running = false
     @shared.busyAngels.pop @
-    @shared.firstWorld = false;
+    @shared.firstWorld = false
     @doWork()
 
   infinitelyLooped: =>
@@ -111,7 +111,7 @@ class Angel
   doWork: =>
     #console.log "work."
     return if @aborted
-    console.log @id + " ready and looking for work. WorkQueue lenght is " + @shared.workQueue.length
+    console.log @id + " ready and looking for work. WorkQueue length is " + @shared.workQueue.length
     if @initialized and @shared.workQueue.length
       work = @shared.workQueue.pop()
       if work is Angel.cyanide # Kill all other Angels, too

app/lib/God.coffee

@@ -92,7 +92,7 @@ module.exports = class God
     #console.log "UserCodeProblem:", '"' + problem.message + '"', "for", problem.userInfo.thangID, "-", problem.userInfo.methodName, 'at line', problem.ranges?[0][0][0], 'column', problem.ranges?[0][0][1]
     Backbone.Mediator.publish 'god:user-code-problem', problem: problem
 
-  createWorld: (spells) ->
+  createWorld: (@spells) ->
     #console.log @id + ': "Let there be light upon', @world.name + '!"'
     unless Worker?  # profiling world simulation is easier on main thread, or we are IE9
       setTimeout @simulateWorld, 1
@@ -121,7 +121,7 @@ module.exports = class God
   beholdWorld: (angel, serialized, goalStates) ->
     unless serialized
       # We're only interested in goalStates.
-      @latestGoalStates = goalStates;
+      @latestGoalStates = goalStates
       Backbone.Mediator.publish('god:goals-calculated', goalStates: goalStates, team: me.team)
       unless _.find @angels, 'busy'
         @spells = null  # Don't hold onto old spells; memory leaks

app/lib/LevelLoader.coffee

@@ -155,6 +155,7 @@ module.exports = class LevelLoader extends CocoClass
   # Building sprite sheets
 
   buildSpriteSheetsForThangType: (thangType) ->
+    return if @headless
     @grabThangTypeTeams() unless @thangTypeTeams
     for team in @thangTypeTeams[thangType.get('original')] ? [null]
       spriteOptions = {resolutionFactor: 4, async: false}

app/lib/simulator/Simulator.coffee

@@ -6,16 +6,14 @@ God = require 'lib/Buddha'
 
 module.exports = class Simulator extends CocoClass
 
-  constructor: (workerCode) ->
+  constructor: (@options) ->
+    @options ?= {}
     _.extend @, Backbone.Events
     @trigger 'statusUpdate', 'Starting simulation!'
     @retryDelayInSeconds = 10
     @taskURL = '/queue/scoring'
     @simulatedByYou = 0
-    if workerCode
-      @god = new God maxWorkerPoolSize: 1, maxAngels: 1, workerCode: workerCode # Start loading worker.
-    else
-      @god = new God maxWorkerPoolSize: 1, maxAngels: 1
+    @god = new God maxWorkerPoolSize: 1, maxAngels: 1, workerCode: @options.workerCode  # Start loading worker.
 
   destroy: ->
     @off()
@@ -25,14 +23,14 @@ module.exports = class Simulator extends CocoClass
   fetchAndSimulateTask: =>
     return if @destroyed
 
-    if headless
+    if @options.headlessClient
       if @dumpThisTime # The first heapdump would be useless to find leaks.
         console.log "Writing snapshot."
-        heapdump.writeSnapshot()
-      @dumpThisTime = true if heapdump
+        @options.heapdump.writeSnapshot()
+      @dumpThisTime = true if @options.heapdump
 
-      if testing
-        _.delay @setupSimulationAndLoadLevel, 0, testFile, "Testing...", status: 400
+      if @options.testing
+        _.delay @setupSimulationAndLoadLevel, 0, @options.testFile, "Testing...", status: 400
         return
 
     @trigger 'statusUpdate', 'Fetching simulation data!'
@@ -116,7 +114,7 @@ module.exports = class Simulator extends CocoClass
     Backbone.Mediator.subscribeOnce 'god:new-world-created', @processResults, @
 
     #Search for leaks, headless-client only.
-    if headless and leaktest and not @memwatch?
+    if @options.headlessClient and @options.leakTest and not @memwatch?
       leakcount = 0
       maxleakcount = 0
       console.log "Setting leak callbacks."
@@ -134,7 +132,7 @@ module.exports = class Simulator extends CocoClass
               diff = @hd.end()
               console.warn "HeapDiff:\n" + JSON.stringify(diff)
 
-              if exitOnLeak
+              if @options.exitOnLeak
                 console.warn "Exiting because of Leak."
                 process.exit()
               @hd = new @memwatch.HeapDiff()
@@ -153,7 +151,7 @@ module.exports = class Simulator extends CocoClass
     @trigger 'statusUpdate', 'Simulation completed, sending results back to server!'
     console.log "Sending result back to server!"
 
-    if headless and testing
+    if @options.headlessClient and @options.testing
       return @fetchAndSimulateTask()
 
     $.ajax
@@ -169,7 +167,7 @@ module.exports = class Simulator extends CocoClass
     @trigger 'statusUpdate', 'Results were successfully sent back to server!'
     console.log "Simulated by you: " + @simulatedByYou
     @simulatedByYou++
-    if not headless
+    unless @options.headlessClient
       simulatedBy = parseInt($('#simulated-by-you').text(), 10) + 1
       $('#simulated-by-you').text(simulatedBy)
 
@@ -178,8 +176,15 @@ module.exports = class Simulator extends CocoClass
     console.log "Task registration error: #{JSON.stringify error}"
 
   cleanupAndSimulateAnotherTask: =>
+    @cleanupSimulation()
     @fetchAndSimulateTask()
 
+  cleanupSimulation: ->
+    @god?.destroy()
+    @god = null
+    @world = null
+    @level = null
+
   formTaskResultsObject: (simulationResults) ->
     taskResults =
       taskID: @task.getTaskID()

app/views/play/ladder/simulate_tab.coffee

@@ -38,7 +38,7 @@ module.exports = class SimulateTabView extends CocoView
   # Simulations
 
   onSimulateButtonClick: (e) ->
-    $("#simulate-button").prop "disabled",true
+    $("#simulate-button").prop "disabled", true
     $("#simulate-button").text "Simulating..."
 
     @simulator.fetchAndSimulateTask()

headless_client.coffee

@@ -3,14 +3,22 @@ This file will simulate games on node.js by emulating the browser environment.
 At some point, most of the code can be merged with Simulator.coffee
 ###
 
-# SETTINGS
-GLOBAL.debug = false # Enable logging of ajax calls mainly
-GLOBAL.testing = false # Instead of simulating 'real' games, use the same one over and over again. Good for leak hunting.
-GLOBAL.leaktest = false # Install callback that tries to find leaks automatically
-GLOBAL.exitOnLeak = false # Exit if leak is found. Only useful if leaktest is set to true, obviously.
-GLOBAL.heapdump = false # Dumps the whole heap after every pass. The heap dumps can then be viewed in Chrome browser.
+bowerComponentsPath = "./bower_components/"
+headlessClientPath = "./headless_client/"
 
-server = if testing then "http://127.0.0.1:3000" else "http://codecombat.com"
+# SETTINGS
+options =
+  workerCode: require headlessClientPath + 'worker_world'
+  debug: false # Enable logging of ajax calls mainly
+  testing: true # Instead of simulating 'real' games, use the same one over and over again. Good for leak hunting.
+  testFile: require headlessClientPath + 'test.js'
+  leakTest: false # Install callback that tries to find leaks automatically
+  exitOnLeak: false # Exit if leak is found. Only useful if leaktest is set to true, obviously.
+  heapdump: false # Dumps the whole heap after every pass. The heap dumps can then be viewed in Chrome browser.
+  headlessClient: true
+
+options.heapdump = require('heapdump') if options.heapdump
+server = if options.testing then "http://127.0.0.1:3000" else "http://codecombat.com"
 
 # Disabled modules
 disable = [
@@ -19,12 +27,8 @@ disable = [
   '../locale/locale'
 ]
 
-GLOBAL.bowerComponents = "./bower_components/"
-GLOBAL.headlessClient = "./headless_client/"
-
 
 # Start of the actual code. Setting up the enivronment to match the environment of the browser
-heapdump = require('heapdump') if heapdump
 
 # the path used for the loader. __dirname is module dependent.
 path = __dirname
@@ -45,7 +49,6 @@ JASON = require 'jason'
 
 # Global emulated stuff
 GLOBAL.window = GLOBAL
-GLOBAL.headless = true
 GLOBAL.document = location: pathname: "headless_client"
 GLOBAL.console.debug = console.log
 
@@ -79,20 +82,20 @@ hookedLoader = (request, parent, isMain) ->
     request = 'lib/Buddha'
 
   if request in disable or ~request.indexOf('templates')
-    console.log 'Ignored ' + request if debug
+    console.log 'Ignored ' + request if options.debug
     return class fake
   else if '/' in request and not (request[0] is '.') or request is 'application'
     request = path + '/app/' + request
   else if request is 'underscore'
     request = 'lodash'
 
-  console.log "loading " + request if debug
+  console.log "loading " + request if options.debug
   originalLoader request, parent, isMain
 
 
 #jQuery wrapped for compatibility purposes. Poorly.
 GLOBAL.$ = GLOBAL.jQuery = (input) ->
-  console.log 'Ignored jQuery: ' + input if debug
+  console.log 'Ignored jQuery: ' + input if options.debug
   append: (input)-> exports: ()->
 
 cookies = request.jar()
@@ -111,8 +114,8 @@ $.ajax = (options) ->
     #console.warn JSON.stringify data
     #data = JSON.stringify data
 
-  console.log "Requesting: " + JSON.stringify options if debug
-  console.log "URL: " + url if debug
+  console.log "Requesting: " + JSON.stringify options if options.debug
+  console.log "URL: " + url if options.debug
   request
     url: url
     jar: cookies
@@ -120,17 +123,17 @@ $.ajax = (options) ->
     method: options.type
     body: data
     , (error, response, body) ->
-      console.log "HTTP Request:" + JSON.stringify options if debug and not error
+      console.log "HTTP Request:" + JSON.stringify options if options.debug and not error
 
       if responded
-        console.log "\t↳Already returned before." if debug
+        console.log "\t↳Already returned before." if options.debug
         return
 
       if (error)
         console.warn "\t↳Returned: error: #{error}"
         options.error(error) if options.error?
       else
-        console.log "\t↳Returned: statusCode #{response.statusCode}: #{if options.parse then JSON.stringify body else body}" if debug
+        console.log "\t↳Returned: statusCode #{response.statusCode}: #{if options.parse then JSON.stringify body else body}" if options.debug
         options.success(body, response, status: response.statusCode) if options.success?
 
 
@@ -161,11 +164,11 @@ do (setupLodash = this) ->
 
 # load Backbone. Needs hooked loader to reroute underscore to lodash.
 hook()
-GLOBAL.Backbone = require bowerComponents + 'backbone/backbone'
+GLOBAL.Backbone = require bowerComponentsPath + 'backbone/backbone'
 unhook()
 Backbone.$ = $
 
-require bowerComponents + 'validated-backbone-mediator/backbone-mediator'
+require bowerComponentsPath + 'validated-backbone-mediator/backbone-mediator'
 # Instead of mediator, dummy might be faster yet suffice?
 #Mediator = class Mediator
 #  publish: (id, object) ->
@@ -198,10 +201,6 @@ $.ajax
     LevelLoader = require 'lib/LevelLoader'
     GoalManager = require 'lib/world/GoalManager'
 
-
-
-    workerCode = require headlessClient + 'worker_world'
-
     SuperModel = require 'models/SuperModel'
 
     log = require 'winston'
@@ -210,8 +209,6 @@ $.ajax
 
     Simulator = require 'lib/simulator/Simulator'
 
-    GLOBAL.testFile = require headlessClient + 'test.js'
+    sim = new Simulator options
 
-    sim = new Simulator workerCode
-
-    sim.fetchAndSimulateTask()
+    sim.fetchAndSimulateTask()