Set up the LevelLoader to load names instead of whole ThangTypes.

app/collections/ThangNamesCollection.coffee

@@ -0,0 +1,11 @@
+ThangType = require 'models/ThangType'
+CocoCollection = require 'collections/CocoCollection'
+
+module.exports = class ThangNamesCollection extends CocoCollection
+  url: '/db/thang.type/names'
+  model: ThangType
+  isCachable: false
+
+  constructor: (ids) ->
+    console.log 'data', {type:'POST', data:{ids:ids}}
+    super([], {type:'POST', data:{ids:ids}})

app/lib/LevelLoader.coffee

@@ -4,6 +4,7 @@ LevelSystem = require 'models/LevelSystem'
 Article = require 'models/Article'
 LevelSession = require 'models/LevelSession'
 ThangType = require 'models/ThangType'
+ThangNamesCollection = require 'collections/ThangNamesCollection'
 
 CocoClass = require 'lib/CocoClass'
 AudioPlayer = require 'lib/AudioPlayer'
@@ -21,6 +22,7 @@ World = require 'lib/world/world'
 module.exports = class LevelLoader extends CocoClass
 
   constructor: (options) ->
+    @t0 = new Date().getTime()
     super()
     @supermodel = options.supermodel
     @levelID = options.levelID
@@ -99,11 +101,14 @@ module.exports = class LevelLoader extends CocoClass
 
     objUniq = (array) -> _.uniq array, false, (arg) -> JSON.stringify(arg)
 
-    for thangID in _.uniq thangIDs
+    thangNames = new ThangNamesCollection(thangIDs)
-      url = "/db/thang.type/#{thangID}/version"
+    @supermodel.loadCollection thangNames, 'thang_names'
-      url += "?project=true" if @headless and not @editorMode
+#    for thangID in _.uniq thangIDs
-      res = @maybeLoadURL url, ThangType, 'thang'
+#      url = "/db/thang.type/#{thangID}/version"
-      @listenToOnce res.model, 'sync', @buildSpriteSheetsForThangType if res
+#      url += "?project=true" if @headless and not @editorMode
+#      res = @maybeLoadURL url, ThangType, 'thang'
+#      @listenToOnce res.model, 'sync', @buildSpriteSheetsForThangType if res
+    
     for obj in objUniq componentVersions
       url = "/db/level.component/#{obj.original}/version/#{obj.majorVersion}"
       @maybeLoadURL url, LevelComponent, 'component'
@@ -192,6 +197,7 @@ module.exports = class LevelLoader extends CocoClass
     @world = new World @level.get('name')
     serializedLevel = @level.serialize(@supermodel)
     @world.loadFromLevel serializedLevel, false
+    console.log 'INITIALIZED!', (new Date().getTime() - @t0) / 1000
 
   # Initial Sound Loading
 

app/locale/en.coffee

@@ -695,5 +695,6 @@
     opponent_session: "Opponent Session"
     article: "Article"
     user_names: "User Names"
+    thang_names: "Thang Names"
     files: "Files"
     top_simulators: "Top Simulators"

app/models/SuperModel.coffee

@@ -80,7 +80,6 @@ module.exports = class SuperModel extends Backbone.Model
     return _.values @models
 
   registerModel: (model) ->
-    console.log 'register model?', model, model.getURL
     @models[model.getURL()] = model
 
   getCollection: (collection) ->
@@ -94,7 +93,7 @@ module.exports = class SuperModel extends Backbone.Model
     @registerCollection(collection)
 
   registerCollection: (collection) ->
-    @collections[collection.getURL()] = collection
+    @collections[collection.getURL()] = collection if collection.isCachable
     # consolidate models
     for model, i in collection.models
       cachedModel = @getModelByURL(model.getURL())

app/views/play/level_view.coffee

@@ -83,7 +83,6 @@ module.exports = class PlayLevelView extends View
     @sessionID = @getQueryVariable 'session'
 
     $(window).on('resize', @onWindowResize)
-    @listenToOnce(@supermodel, 'error', @onLevelLoadError)
     @saveScreenshot = _.throttle @saveScreenshot, 30000
 
     if @isEditorPreview
@@ -96,10 +95,6 @@ module.exports = class PlayLevelView extends View
       @load()
       application.tracker?.trackEvent 'Started Level Load', level: @levelID, label: @levelID
 
-  onLevelLoadError: (e) ->
-    # TODO NOW: remove this in favor of the supermodel handling it
-    application.router.navigate "/play?not_found=#{@levelID}", {trigger: true}
-
   setLevel: (@level, @supermodel) ->
     @god?.level = @level.serialize @supermodel
     if @world

server/commons/Handler.coffee

@@ -112,7 +112,7 @@ module.exports = class Handler
     ids = ids.split(',') if _.isString ids
     ids = _.uniq ids
 
-    project = {name:1}
+    project = {name:1, original:1}
     sort = {'version.major':-1, 'version.minor':-1}
 
     makeFunc = (id) =>
@@ -120,7 +120,7 @@ module.exports = class Handler
         criteria = {original:mongoose.Types.ObjectId(id)}
         @modelClass.findOne(criteria, project).sort(sort).exec (err, document) ->
           return done(err) if err
-          callback(null, document?.toObject() or {})
+          callback(null, document?.toObject() or null)
           
     funcs = {}
     for id in ids
@@ -129,7 +129,7 @@ module.exports = class Handler
 
     async.parallel funcs, (err, results) ->
       return errors.serverError err if err
-      res.send results
+      res.send (d for d in _.values(results) when d)
       res.end()
 
   getPatchesFor: (req, res, id) ->