Make multiplayer work in esper mode

app/lib/LevelLoader.coffee

@@ -125,7 +125,9 @@ module.exports = class LevelLoader extends CocoClass
     @sessionResource = @supermodel.loadModel(session, 'level_session', {cache: false})
     @session = @sessionResource.model
     if @opponentSessionID
-      opponentSession = new LevelSession().setURL "/db/level.session/#{@opponentSessionID}"
+      opponentURL = "/db/level.session/#{@opponentSessionID}"
+      opponentURL += "?interpret=true" if utils.getQueryVariable 'esper'
+      opponentSession = new LevelSession().setURL opponentURL
       opponentSession.project = session.project if @headless
       @opponentSessionResource = @supermodel.loadModel(opponentSession, 'opponent_session', {cache: false})
       @opponentSession = @opponentSessionResource.model
@@ -149,6 +151,12 @@ module.exports = class LevelLoader extends CocoClass
     else if codeLanguage = utils.getQueryVariable 'codeLanguage'
       session.set 'codeLanguage', codeLanguage
     @loadCodeLanguagesForSession session
+    if compressed = session.get 'interpret'
+      uncompressed = LZString.decompressFromUTF16 compressed
+      code = session.get 'code'
+      code[if session.get('team') is 'humans' then 'hero-placeholder' else 'hero-placeholder-1'].plan = uncompressed
+      session.set 'code', code
+      session.unset 'interpret'
     if session is @session
       @addSessionBrowserInfo session
       # hero-ladder games require the correct session team in level:loaded

app/views/play/level/PlayLevelView.coffee

@@ -224,7 +224,10 @@ module.exports = class PlayLevelView extends RootView
       opponentSpells = opponentSpells.concat spells
     if (not @session.get('teamSpells')) and @otherSession?.get('teamSpells')
       @session.set('teamSpells', @otherSession.get('teamSpells'))
-    opponentCode = @otherSession?.get('transpiledCode') or {}
+    if @getQueryVariable 'esper'
+      opponentCode = @otherSession?.get('code') or {}
+    else
+      opponentCode = @otherSession?.get('transpiledCode') or {}
     myCode = @session.get('code') or {}
     for spell in opponentSpells
       [thang, spell] = spell.split '/'

app/views/play/level/tome/Spell.coffee

@@ -2,6 +2,7 @@ SpellView = require './SpellView'
 SpellListTabEntryView = require './SpellListTabEntryView'
 {me} = require 'core/auth'
 {createAetherOptions} = require 'lib/aether_utils'
+utils = require 'core/utils'
 
 module.exports = class Spell
   loaded: false
@@ -214,6 +215,7 @@ module.exports = class Spell
 
   shouldUseTranspiledCode: ->
     # Determine whether this code has already been transpiled, or whether it's raw source needing transpilation.
+    return false if utils.getQueryVariable 'esper'  # Don't use transpiled code with interpreter
     return true if @spectateView  # Use transpiled code for both teams if we're just spectating.
     return true if @isEnemySpell()  # Use transpiled for enemy spells.
     # Players without permissions can't view the raw code.

package.json

@@ -70,6 +70,7 @@
     "gridfs-stream": "~1.1.1",
     "jsondiffpatch": "0.1.17",
     "lodash": "~2.4.1",
+    "lz-string": "1.3.3",
     "mailchimp-api": "2.0.x",
     "moment": "~2.5.0",
     "mongodb": "^2.0.28",

server/handlers/level_session_handler.coffee

@@ -1,6 +1,7 @@
 LevelSession = require './../models/LevelSession'
 Handler = require '../commons/Handler'
 log = require 'winston'
+LZString = require 'lz-string'
 
 TIMEOUT = 1000 * 30 # no activity for 30 seconds means it's not active
 
@@ -14,14 +15,19 @@ class LevelSessionHandler extends Handler
     super(arguments...)
 
   formatEntity: (req, document) ->
-    documentObject = super(req, document)
-    if req.user?.isAdmin() or
+    document = super(req, document)
+    submittedCode = document.submittedCode
+    unless req.user?.isAdmin() or
        req.user?.id is document.creator or
        ('employer' in (req.user?.get('permissions') ? [])) or
        not document.submittedCode  # TODO: only allow leaderboard access to non-top-5 solutions
-      return documentObject
-    else
-      return _.omit documentObject, @privateProperties
+      document = _.omit document, @privateProperties
+    if req.query.interpret
+      plan = submittedCode[if document.team is 'humans' then 'hero-placeholder' else 'hero-placeholder-1'].plan
+      plan = LZString.compressToUTF16 plan
+      document.interpret = plan
+      document.code = submittedCode
+    return document
 
   getActiveSessions: (req, res) ->
     return @sendForbiddenError(res) unless req.user?.isAdmin()