codecombat/app/views/play/level/PlayLevelView.coffee

RootView = require 'views/kinds/RootView'
template = require 'templates/play/level'
{me} = require 'lib/auth'
ThangType = require 'models/ThangType'
utils = require 'lib/utils'
storage = require 'lib/storage'
{createAetherOptions} = require 'lib/aether_utils'

# tools
Surface = require 'lib/surface/Surface'
God = require 'lib/God'
GoalManager = require 'lib/world/GoalManager'
ScriptManager = require 'lib/scripts/ScriptManager'
LevelBus = require 'lib/LevelBus'
LevelLoader = require 'lib/LevelLoader'
LevelSession = require 'models/LevelSession'
Level = require 'models/Level'
LevelComponent = require 'models/LevelComponent'
Article = require 'models/Article'
Camera = require 'lib/surface/Camera'
AudioPlayer = require 'lib/AudioPlayer'
RealTimeModel = require 'models/RealTimeModel'
RealTimeCollection = require 'collections/RealTimeCollection'

# subviews
LevelLoadingView = require './LevelLoadingView'
ProblemAlertView = require './tome/ProblemAlertView'
TomeView = require './tome/TomeView'
ChatView = require './LevelChatView'
HUDView = require './LevelHUDView'
LevelDialogueView = require './LevelDialogueView'
ControlBarView = require './ControlBarView'
LevelPlaybackView = require './LevelPlaybackView'
GoalsView = require './LevelGoalsView'
LevelFlagsView = require './LevelFlagsView'
GoldView = require './LevelGoldView'
VictoryModal = require './modal/VictoryModal'
HeroVictoryModal = require './modal/HeroVictoryModal'
InfiniteLoopModal = require './modal/InfiniteLoopModal'
LevelSetupManager = require 'lib/LevelSetupManager'

PROFILE_ME = false

module.exports = class PlayLevelView extends RootView
  id: 'level-view'
  template: template
  cache: false
  shortcutsEnabled: true
  isEditorPreview: false

  subscriptions:
    'level:set-volume': (e) -> createjs.Sound.setVolume(if e.volume is 1 then 0.6 else e.volume)  # Quieter for now until individual sound FX controls work again.
    'level:show-victory': 'onShowVictory'
    'level:restart': 'onRestartLevel'
    'level:highlight-dom': 'onHighlightDOM'
    'level:end-highlight-dom': 'onEndHighlight'
    'level:focus-dom': 'onFocusDom'
    'level:disable-controls': 'onDisableControls'
    'level:enable-controls': 'onEnableControls'
    'god:world-load-progress-changed': 'onWorldLoadProgressChanged'
    'god:new-world-created': 'onNewWorld'
    'god:streaming-world-updated': 'onNewWorld'
    'god:infinite-loop': 'onInfiniteLoop'
    'level:reload-from-data': 'onLevelReloadFromData'
    'level:reload-thang-type': 'onLevelReloadThangType'
    'level:play-next-level': 'onPlayNextLevel'
    'level:edit-wizard-settings': 'showWizardSettingsModal'
    'level:session-will-save': 'onSessionWillSave'
    'level:started': 'onLevelStarted'
    'level:loading-view-unveiling': 'onLoadingViewUnveiling'
    'level:loading-view-unveiled': 'onLoadingViewUnveiled'
    'level:loaded': 'onLevelLoaded'
    'level:session-loaded': 'onSessionLoaded'
    'playback:real-time-playback-waiting': 'onRealTimePlaybackWaiting'
    'playback:real-time-playback-started': 'onRealTimePlaybackStarted'
    'playback:real-time-playback-ended': 'onRealTimePlaybackEnded'
    'real-time-multiplayer:created-game': 'onRealTimeMultiplayerCreatedGame'
    'real-time-multiplayer:joined-game': 'onRealTimeMultiplayerJoinedGame'
    'real-time-multiplayer:left-game': 'onRealTimeMultiplayerLeftGame'
    'real-time-multiplayer:manual-cast': 'onRealTimeMultiplayerCast'
    'ipad:memory-warning': 'onIPadMemoryWarning'
    'store:item-purchased': 'onItemPurchased'

  events:
    'click #level-done-button': 'onDonePressed'
    'click #stop-real-time-playback-button': -> Backbone.Mediator.publish 'playback:stop-real-time-playback', {}
    'click #fullscreen-editor-background-screen': (e) -> Backbone.Mediator.publish 'tome:toggle-maximize', {}

  shortcuts:
    'ctrl+s': 'onCtrlS'

  # Initial Setup #############################################################

  constructor: (options, @levelID) ->
    console.profile?() if PROFILE_ME
    super options
    if not me.get('hourOfCode') and @getQueryVariable 'hour_of_code'
      @setUpHourOfCode()

    @isEditorPreview = @getQueryVariable 'dev'
    @sessionID = @getQueryVariable 'session'

    @opponentSessionID = @getQueryVariable('opponent')
    @opponentSessionID ?= @options.opponent

    $(window).on 'resize', @onWindowResize
    @saveScreenshot = _.throttle @saveScreenshot, 30000

    if @isEditorPreview
      @supermodel.shouldSaveBackups = (model) ->  # Make sure to load possibly changed things from localStorage.
        model.constructor.className in ['Level', 'LevelComponent', 'LevelSystem', 'ThangType']
      f = => @load() unless @levelLoader  # Wait to see if it's just given to us through setLevel.
      setTimeout f, 100
    else
      @load()
      application.tracker?.trackEvent 'Started Level Load', level: @levelID, label: @levelID, ['Google Analytics']

  setUpHourOfCode: ->
    me.set 'hourOfCode', true
    me.patch()
    $('body').append($('<img src="http://code.org/api/hour/begin_codecombat.png" style="visibility: hidden;">'))
    application.tracker?.trackEvent 'Hour of Code Begin', {}

  setLevel: (@level, givenSupermodel) ->
    @supermodel.models = givenSupermodel.models
    @supermodel.collections = givenSupermodel.collections
    @supermodel.shouldSaveBackups = givenSupermodel.shouldSaveBackups

    serializedLevel = @level.serialize @supermodel, @session, @otherSession
    @god?.setLevel serializedLevel
    if @world
      @world.loadFromLevel serializedLevel, false
    else
      @load()

  load: ->
    @loadStartTime = new Date()
    @god = new God debugWorker: true
    @levelLoader = new LevelLoader supermodel: @supermodel, levelID: @levelID, sessionID: @sessionID, opponentSessionID: @opponentSessionID, team: @getQueryVariable('team')
    @listenToOnce @levelLoader, 'world-necessities-loaded', @onWorldNecessitiesLoaded

  trackLevelLoadEnd: ->
    return if @isEditorPreview
    @loadEndTime = new Date()
    loadDuration = @loadEndTime - @loadStartTime
    console.debug "Level unveiled after #{(loadDuration / 1000).toFixed(2)}s"
    application.tracker?.trackEvent 'Finished Level Load', level: @levelID, label: @levelID, loadDuration: loadDuration, ['Google Analytics']
    application.tracker?.trackTiming loadDuration, 'Level Load Time', @levelID, @levelID
    application.tracker?.trackEvent 'Play Level', Action: 'Loaded', levelID: @levelID

  # CocoView overridden methods ###############################################

  getRenderData: ->
    c = super()
    c.world = @world
    if me.get('hourOfCode') and me.get('preferredLanguage', true) is 'en-US'
      # Show the Hour of Code footer explanation until it's been more than a day
      elapsed = (new Date() - new Date(me.get('dateCreated')))
      c.explainHourOfCode = elapsed < 86400 * 1000
    c

  afterRender: ->
    super()
    window.onPlayLevelViewLoaded? @  # still a hack
    @insertSubView @loadingView = new LevelLoadingView autoUnveil: @options.autoUnveil, level: @level  # May not have @level loaded yet
    @$el.find('#level-done-button').hide()
    $('body').addClass('is-playing')
    $('body').bind('touchmove', false) if @isIPadApp()

  afterInsert: ->
    super()

  # Partially Loaded Setup ####################################################

  onWorldNecessitiesLoaded: ->
    # Called when we have enough to build the world, but not everything is loaded
    @grabLevelLoaderData()
    team = @getQueryVariable('team') ?  @session.get('team') ? @world.teamForPlayer(0)
    @loadOpponentTeam(team)
    @setupGod()
    @setTeam team
    @initGoalManager()
    @insertSubviews()
    @initVolume()
    @listenTo(@session, 'change:multiplayer', @onMultiplayerChanged)

    @originalSessionState = $.extend(true, {}, @session.get('state'))
    @register()
    @controlBar.setBus(@bus)
    @initScriptManager()

  grabLevelLoaderData: ->
    @session = @levelLoader.session
    @world = @levelLoader.world
    @level = @levelLoader.level
    @$el.addClass 'hero' if @level.get('type', true) in ['hero', 'hero-ladder', 'hero-coop']
    @$el.addClass 'flags' if _.any(@world.thangs, (t) -> (t.programmableProperties and 'findFlags' in t.programmableProperties) or t.inventory?.flag) or @level.get('slug') is 'sky-span'
    # TODO: Update terminology to always be opponentSession or otherSession
    # TODO: E.g. if it's always opponent right now, then variable names should be opponentSession until we have coop play
    @otherSession = @levelLoader.opponentSession
    @worldLoadFakeResources = []  # first element (0) is 1%, last (100) is 100%
    for percent in [1 .. 100]
      @worldLoadFakeResources.push @supermodel.addSomethingResource "world_simulation_#{percent}%", 1

  onWorldLoadProgressChanged: (e) ->
    return unless @worldLoadFakeResources
    @lastWorldLoadPercent ?= 0
    worldLoadPercent = Math.floor 100 * e.progress
    for percent in [@lastWorldLoadPercent + 1 .. worldLoadPercent] by 1
      @worldLoadFakeResources[percent - 1].markLoaded()
    @lastWorldLoadPercent = worldLoadPercent
    @worldFakeLoadResources = null if worldLoadPercent is 100  # Done, don't need to watch progress any more.

  loadOpponentTeam: (myTeam) ->
    opponentSpells = []
    for spellTeam, spells of @session.get('teamSpells') ? @otherSession?.get('teamSpells') ? {}
      continue if spellTeam is myTeam or not myTeam
      opponentSpells = opponentSpells.concat spells
    if (not @session.get('teamSpells')) and @otherSession?.get('teamSpells')
      @session.set('teamSpells', @otherSession.get('teamSpells'))
    opponentCode = @otherSession?.get('transpiledCode') or {}
    myCode = @session.get('code') or {}
    for spell in opponentSpells
      [thang, spell] = spell.split '/'
      c = opponentCode[thang]?[spell]
      myCode[thang] ?= {}
      if c then myCode[thang][spell] = c else delete myCode[thang][spell]
    @session.set('code', myCode)
    if @session.get('multiplayer') and @otherSession?
      # For now, ladderGame will disallow multiplayer, because session code combining doesn't play nice yet.
      @session.set 'multiplayer', false

  setupGod: ->
    @god.setLevel @level.serialize @supermodel, @session, @otherSession
    @god.setLevelSessionIDs if @otherSession then [@session.id, @otherSession.id] else [@session.id]
    @god.setWorldClassMap @world.classMap

  setTeam: (team) ->
    team = team?.team unless _.isString team
    team ?= 'humans'
    me.team = team
    @session.set 'team', team
    Backbone.Mediator.publish 'level:team-set', team: team  # Needed for scripts
    @team = team

  initGoalManager: ->
    @goalManager = new GoalManager(@world, @level.get('goals'), @team)
    @god.setGoalManager @goalManager

  insertSubviews: ->
    @insertSubView @tome = new TomeView levelID: @levelID, session: @session, otherSession: @otherSession, thangs: @world.thangs, supermodel: @supermodel, level: @level
    @insertSubView new LevelPlaybackView session: @session, levelID: @levelID, level: @level
    @insertSubView new GoalsView {}
    @insertSubView new LevelFlagsView world: @world if @$el.hasClass 'flags'
    @insertSubView new GoldView {}
    @insertSubView new HUDView {level: @level}
    @insertSubView new LevelDialogueView {level: @level}
    @insertSubView new ChatView levelID: @levelID, sessionID: @session.id, session: @session
    @insertSubView new ProblemAlertView {}
    worldName = utils.i18n @level.attributes, 'name'
    @controlBar = @insertSubView new ControlBarView {worldName: worldName, session: @session, level: @level, supermodel: @supermodel}
    #_.delay (=> Backbone.Mediator.publish('level:set-debug', debug: true)), 5000 if @isIPadApp()   # if me.displayName() is 'Nick'

  initVolume: ->
    volume = me.get('volume')
    volume = 1.0 unless volume?
    Backbone.Mediator.publish 'level:set-volume', volume: volume

  initScriptManager: ->
    @scriptManager = new ScriptManager({scripts: @world.scripts or [], view: @, session: @session, levelID: @level.get('slug')})
    @scriptManager.loadFromSession()

  register: ->
    @bus = LevelBus.get(@levelID, @session.id)
    @bus.setSession(@session)
    @bus.setSpells @tome.spells
    @bus.connect() if @session.get('multiplayer')

  # Load Completed Setup ######################################################

  onLevelLoaded: (e) ->
    # Just the level has been loaded by the level loader
    @showWizardSettingsModal() if not me.get('name') and not @isIPadApp() and not (e.level.get('type', true) in ['hero', 'hero-ladder', 'hero-coop'])

  onSessionLoaded: (e) ->
    # Just the level and session have been loaded by the level loader
    if e.level.get('type', true) in ['hero', 'hero-ladder', 'hero-coop'] and not _.size e.session.get('heroConfig')?.inventory ? {}
      @setupManager?.destroy()
      @setupManager = new LevelSetupManager({supermodel: @supermodel, levelID: @levelID, parent: @, session: @session})
      @setupManager.open()

    @onRealTimeMultiplayerLevelLoaded() if e.level.get('type') in ['hero-ladder']

  onLoaded: ->
    _.defer => @onLevelLoaderLoaded()

  onLevelLoaderLoaded: ->
    # Everything is now loaded
    return unless @levelLoader.progress() is 1  # double check, since closing the guide may trigger this early

    # Save latest level played.
    if not (@levelLoader.level.get('type') in ['ladder', 'ladder-tutorial'])
      me.set('lastLevel', @levelID)
      me.save()
    @saveRecentMatch() if @otherSession
    @levelLoader.destroy()
    @levelLoader = null
    @initSurface()

  saveRecentMatch: ->
    allRecentlyPlayedMatches = storage.load('recently-played-matches') ? {}
    recentlyPlayedMatches = allRecentlyPlayedMatches[@levelID] ? []
    allRecentlyPlayedMatches[@levelID] = recentlyPlayedMatches
    recentlyPlayedMatches.unshift yourTeam: me.team, otherSessionID: @otherSession.id, opponentName: @otherSession.get('creatorName') unless _.find recentlyPlayedMatches, otherSessionID: @otherSession.id
    recentlyPlayedMatches.splice(8)
    storage.save 'recently-played-matches', allRecentlyPlayedMatches

  initSurface: ->
    webGLSurface = $('canvas#webgl-surface', @$el)
    normalSurface = $('canvas#normal-surface', @$el)
    @surface = new Surface(@world, normalSurface, webGLSurface, thangTypes: @supermodel.getModels(ThangType), playJingle: not @isEditorPreview, wizards: not (@level.get('type', true) in ['hero', 'hero-ladder', 'hero-coop']))
    worldBounds = @world.getBounds()
    bounds = [{x: worldBounds.left, y: worldBounds.top}, {x: worldBounds.right, y: worldBounds.bottom}]
    @surface.camera.setBounds(bounds)
    @surface.camera.zoomTo({x: 0, y: 0}, 0.1, 0)

  # Once Surface is Loaded ####################################################

  onLevelStarted: ->
    return unless @surface?
    @loadingView.showReady()
    @trackLevelLoadEnd()
    if window.currentModal and not window.currentModal.destroyed and window.currentModal.constructor isnt VictoryModal
      return Backbone.Mediator.subscribeOnce 'modal:closed', @onLevelStarted, @
    @surface.showLevel()
    if @otherSession and not (@level.get('type', true) in ['hero', 'hero-ladder', 'hero-coop'])
      # TODO: colorize name and cloud by team, colorize wizard by user's color config
      @surface.createOpponentWizard id: @otherSession.get('creator'), name: @otherSession.get('creatorName'), team: @otherSession.get('team'), levelSlug: @level.get('slug'), codeLanguage: @otherSession.get('submittedCodeLanguage')
    if @isEditorPreview
      @loadingView.startUnveiling()
      @loadingView.unveil()

  onLoadingViewUnveiling: (e) ->
    @restoreSessionState()

  onLoadingViewUnveiled: (e) ->
    @loadingView.$el.remove()
    @removeSubView @loadingView
    @loadingView = null
    @playAmbientSound()
    if @options.realTimeMultiplayerSessionID?
      Backbone.Mediator.publish 'playback:real-time-playback-waiting', {}
      @realTimeMultiplayerContinueGame @options.realTimeMultiplayerSessionID
    application.tracker?.trackEvent 'Play Level', Action: 'Start Level', levelID: @levelID

  playAmbientSound: ->
    return if @ambientSound
    return unless file = {Dungeon: 'ambient-dungeon', Grass: 'ambient-grass'}[@level.get('terrain')]
    src = "/file/interface/#{file}#{AudioPlayer.ext}"
    unless AudioPlayer.getStatus(src)?.loaded
      AudioPlayer.preloadSound src
      Backbone.Mediator.subscribeOnce 'audio-player:loaded', @playAmbientSound, @
      return
    @ambientSound = createjs.Sound.play src, loop: -1, volume: 0.1
    createjs.Tween.get(@ambientSound).to({volume: 1.0}, 10000)

  restoreSessionState: ->
    return if @alreadyLoadedState
    @alreadyLoadedState = true
    state = @originalSessionState
    if not @level or @level.get('type', true) in ['hero', 'hero-ladder', 'hero-coop']
      Backbone.Mediator.publish 'level:suppress-selection-sounds', suppress: true
      Backbone.Mediator.publish 'tome:select-primary-sprite', {}
      Backbone.Mediator.publish 'level:suppress-selection-sounds', suppress: false
      @surface.focusOnHero()
      Backbone.Mediator.publish 'level:set-time', time: 0
      Backbone.Mediator.publish 'level:set-playing', playing: true
    else
      if state.frame and @level.get('type', true) isnt 'ladder'  # https://github.com/codecombat/codecombat/issues/714
        Backbone.Mediator.publish 'level:set-time', time: 0, frameOffset: state.frame
      if state.selected
        # TODO: Should also restore selected spell here by saving spellName
        Backbone.Mediator.publish 'level:select-sprite', thangID: state.selected, spellName: null
      if state.playing?
        Backbone.Mediator.publish 'level:set-playing', playing: state.playing

  # callbacks

  onCtrlS: (e) ->
    e.preventDefault()

  onLevelReloadFromData: (e) ->
    isReload = Boolean @world
    @setLevel e.level, e.supermodel
    if isReload
      @scriptManager.setScripts(e.level.get('scripts'))
      Backbone.Mediator.publish 'tome:cast-spell', {}  # a bit hacky

  onLevelReloadThangType: (e) ->
    tt = e.thangType
    for url, model of @supermodel.models
      if model.id is tt.id
        for key, val of tt.attributes
          model.attributes[key] = val
        break
    Backbone.Mediator.publish 'tome:cast-spell', {}

  onWindowResize: (e) => @endHighlight()

  onDisableControls: (e) ->
    return if e.controls and not ('level' in e.controls)
    @shortcutsEnabled = false
    @wasFocusedOn = document.activeElement
    $('body').focus()

  onEnableControls: (e) ->
    return if e.controls? and not ('level' in e.controls)
    @shortcutsEnabled = true
    $(@wasFocusedOn).focus() if @wasFocusedOn
    @wasFocusedOn = null

  onDonePressed: -> @showVictory()

  onShowVictory: (e) ->
    $('#level-done-button').show() unless @level.get('type', true) in ['hero', 'hero-ladder', 'hero-coop']
    @showVictory() if e.showModal
    setTimeout(@preloadNextLevel, 3000)
    return if @victorySeen
    @victorySeen = true
    victoryTime = (new Date()) - @loadEndTime
    if victoryTime > 10 * 1000   # Don't track it if we're reloading an already-beaten level
      application.tracker?.trackEvent 'Saw Victory',
        level: @level.get('name')
        label: @level.get('name')
      application.tracker?.trackTiming victoryTime, 'Level Victory Time', @levelID, @levelID, 100

  showVictory: ->
    @endHighlight()
    options = {level: @level, supermodel: @supermodel, session: @session, hasReceivedMemoryWarning: @hasReceivedMemoryWarning}
    ModalClass = if @level.get('type', true) in ['hero', 'hero-ladder', 'hero-coop'] then HeroVictoryModal else VictoryModal
    victoryModal = new ModalClass(options)
    @openModalView(victoryModal)
    if me.get('anonymous')
      window.nextLevelURL = @getNextLevelURL()  # Signup will go here on completion instead of reloading.

  onRestartLevel: ->
    @tome.reloadAllCode()
    Backbone.Mediator.publish 'level:restarted', {}
    $('#level-done-button', @$el).hide()
    application.tracker?.trackEvent 'Confirmed Restart', level: @level.get('name'), label: @level.get('name')

  onInfiniteLoop: (e) ->
    return unless e.firstWorld
    @openModalView new InfiniteLoopModal()
    application.tracker?.trackEvent 'Saw Initial Infinite Loop', level: @level.get('name'), label: @level.get('name')

  onPlayNextLevel: ->
    nextLevelID = @getNextLevelID()
    nextLevelURL = @getNextLevelURL()
    Backbone.Mediator.publish 'router:navigate', {
      route: nextLevelURL,
      viewClass: PlayLevelView,
      viewArgs: [{supermodel: if @hasReceivedMemoryWarning then null else @supermodel}, nextLevelID]}

  getNextLevel: ->
    return null unless nextLevelOriginal = @level.get('nextLevel')?.original
    levels = @supermodel.getModels(Level)
    return l for l in levels when l.get('original') is nextLevelOriginal

  getNextLevelID: ->
    return null unless nextLevel = @getNextLevel()
    nextLevelID = nextLevel.get('slug') or nextLevel.id

  getNextLevelURL: ->
    return null unless @getNextLevelID()
    "/play/level/#{@getNextLevelID()}"

  onHighlightDOM: (e) -> @highlightElement e.selector, delay: e.delay, sides: e.sides, offset: e.offset, rotation: e.rotation

  onEndHighlight: -> @endHighlight()

  onFocusDom: (e) -> $(e.selector).focus()

  onMultiplayerChanged: (e) ->
    if @session.get('multiplayer')
      @bus.connect()
    else
      @bus.removeFirebaseData =>
        @bus.disconnect()

  preloadNextLevel: =>
    # TODO: Loading models in the middle of gameplay causes stuttering. Most of the improvement in loading time is simply from passing the supermodel from this level to the next, but if we can find a way to populate the level early without it being noticeable, that would be even better.
#    return if @destroyed
#    return if @preloaded
#    nextLevel = @getNextLevel()
#    @supermodel.populateModel nextLevel
#    @preloaded = true

  onSessionWillSave: (e) ->
    # Something interesting has happened, so (at a lower frequency), we'll save a screenshot.
    #@saveScreenshot e.session

  # Throttled
  saveScreenshot: (session) =>
    return unless screenshot = @surface?.screenshot()
    session.save {screenshot: screenshot}, {patch: true, type: 'PUT'}

  # Dynamic sound loading

  onNewWorld: (e) ->
    return if @headless
    scripts = @world.scripts  # Since these worlds don't have scripts, preserve them.
    @world = e.world
    @world.scripts = scripts
    thangTypes = @supermodel.getModels(ThangType)
    startFrame = @lastWorldFramesLoaded ? 0
    finishedLoading = @world.frames.length is @world.totalFrames
    if finishedLoading
      @lastWorldFramesLoaded = 0
      if @waitingForSubmissionComplete
        _.defer @onSubmissionComplete  # Give it a frame to make sure we have the latest goals
        @waitingForSubmissionComplete = false
    else
      @lastWorldFramesLoaded = @world.frames.length
    for [spriteName, message] in @world.thangDialogueSounds startFrame
      continue unless thangType = _.find thangTypes, (m) -> m.get('name') is spriteName
      continue unless sound = AudioPlayer.soundForDialogue message, thangType.get('soundTriggers')
      AudioPlayer.preloadSoundReference sound

  # Real-time playback
  onRealTimePlaybackWaiting: (e) ->
    @$el.addClass('real-time').focus()
    @onWindowResize()

  onRealTimePlaybackStarted: (e) ->
    @$el.addClass('real-time').focus()
    @onWindowResize()

  onRealTimePlaybackEnded: (e) ->
    return unless @$el.hasClass 'real-time'
    @$el.removeClass 'real-time'
    @onWindowResize()
    if @world.frames.length is @world.totalFrames
      _.delay @onSubmissionComplete, 750  # Wait for transition to end.
    else
      @waitingForSubmissionComplete = true
    @onRealTimeMultiplayerPlaybackEnded()

  onSubmissionComplete: =>
    return if @destroyed
    # TODO: Show a victory dialog specific to hero-ladder level
    if @goalManager.checkOverallStatus() is 'success' and not @options.realTimeMultiplayerSessionID?
      Backbone.Mediator.publish 'level:show-victory', showModal: true

  destroy: ->
    @levelLoader?.destroy()
    @surface?.destroy()
    @god?.destroy()
    @goalManager?.destroy()
    @scriptManager?.destroy()
    @setupManager?.destroy()
    if ambientSound = @ambientSound
      # Doesn't seem to work; stops immediately.
      createjs.Tween.get(ambientSound).to({volume: 0.0}, 1500).call -> ambientSound.stop()
    $(window).off 'resize', @onWindowResize
    delete window.world # not sure where this is set, but this is one way to clean it up
    @bus?.destroy()
    #@instance.save() unless @instance.loading
    delete window.nextLevelURL
    console.profileEnd?() if PROFILE_ME
    @onRealTimeMultiplayerLevelUnloaded()
    super()

  onIPadMemoryWarning: (e) ->
    @hasReceivedMemoryWarning = true

  onItemPurchased: (e) ->
    heroConfig = @session.get('heroConfig') ? {}
    inventory = heroConfig.inventory ? {}
    slot = e.item.getAllowedSlots()[0]
    if slot and not inventory[slot]
      # Open up the inventory modal so they can equip the new item
      @setupManager?.destroy()
      @setupManager = new LevelSetupManager({supermodel: @supermodel, levelID: @levelID, parent: @, session: @session, hadEverChosenHero: true})
      @setupManager.open()

  # Start Real-time Multiplayer ######################################################
  #
  # This view acts as a hub for the real-time multiplayer session for the current level.
  #
  # It performs these actions:
  #   Player heartbeat
  #   Publishes player status
  #   Updates real-time multiplayer session state
  #   Updates real-time multiplayer player state
  #   Cleans up old sessions (sets state to 'finished')
  #   Real-time multiplayer cast handshake
  #   Swap teams on game joined, if necessary
  #   Reload PlayLevelView on real-time submit, automatically continue game and real-time playback
  #
  # It monitors these:
  #   Real-time multiplayer sessions
  #   Current real-time multiplayer session
  #   Internal multiplayer create/joined/left events
  #
  # Real-time state variables:
  #   @realTimePlayerStatus - User's real-time multiplayer state for this level
  #   @realTimePlayerGameStatus - User's state for current real-time multiplayer game session
  #   @realTimeSession - Current real-time multiplayer game session
  #   @realTimeOpponent - Current real-time multiplayer opponent
  #   @realTimePlayers - Real-time players for current real-time multiplayer game session
  #   @realTimeSessionCollection - Collection of all real-time multiplayer sessions
  #   @options.realTimeMultiplayerSessionID - Need to continue an existing real-time multiplayer session
  #
  # TODO: Move this code to it's own file, or possibly the LevelBus
  # TODO: Save settings somewhere reasonable
  # TODO: Ditch backfire and just use Firebase directly.  Easier to debug, richer APIs (E.g. presence stuff).

  onRealTimeMultiplayerLevelLoaded: ->
    return if @realTimePlayerStatus?
    return if me.get('anonymous')
    unless @options.realTimeMultiplayerSessionID?
      players = new RealTimeCollection('multiplayer_players/' + @levelID)
      players.create
        id: me.id
        name: me.get('name')
        state: 'playing'
        created: new Date().toISOString()
        heartbeat: new Date().toISOString()
    @realTimePlayerStatus = new RealTimeModel('multiplayer_players/' + @levelID + '/' + me.id)
    @timerMultiplayerHeartbeatID = setInterval @onRealTimeMultiplayerHeartbeat, 60 * 1000
    @cleanupRealTimeSessions()

  cleanupRealTimeSessions: ->
    @realTimeSessionCollection = new RealTimeCollection 'multiplayer_level_sessions'
    @realTimeSessionCollection.on 'add', @cleanupRealTimeSession
    @realTimeSessionCollection.each @cleanupRealTimeSession

  cleanupRealTimeSession: (session) =>
    return if @options.realTimeMultiplayerSessionID? and @options.realTimeMultiplayerSessionID is session.id
    if session.get('state') isnt 'finished'
      players = new RealTimeCollection 'multiplayer_level_sessions/' + session.id + '/players'
      players.each (player) =>
        if player.id is me.id
          p = new RealTimeModel 'multiplayer_level_sessions/' + session.id + '/players/' + me.id
          console.info 'Cleaning up previous real-time multiplayer session', session.id
          p.set 'state', 'left'
          session.set 'state', 'finished'

  onRealTimeMultiplayerLevelUnloaded: ->
    # console.log 'PlayLevelView onRealTimeMultiplayerLevelUnloaded'
    if @timerMultiplayerHeartbeatID?
      clearInterval @timerMultiplayerHeartbeatID
      @timerMultiplayerHeartbeatID = null
    if @realTimeSessionCollection?
      @realTimeSessionCollection.off 'add', @cleanupRealTimeSession
      @realTimeSessionCollection = null

    # TODO: similar to game ending cleanup
    if @realTimeOpponent?
      @realTimeOpponent.off 'change', @onRealTimeOpponentChanged
      @realTimeOpponent = null
    if @realTimePlayers?
      @realTimePlayers.off 'add', @onRealTimePlayerAdded
      @realTimePlayers = null
    if @realTimeSession?
      @realTimeSession.off 'change', @onRealTimeSessionChanged
      @realTimeSession = null
    if @realTimePlayerGameStatus?
      @realTimePlayerGameStatus = null
    if @realTimePlayerStatus?
      @realTimePlayerStatus = null

  onRealTimeMultiplayerHeartbeat: =>
    @realTimePlayerStatus.set 'heartbeat', new Date().toISOString() if @realTimePlayerStatus

  onRealTimeMultiplayerCreatedGame: (e) ->
    @joinRealTimeMultiplayerGame e
    @realTimePlayerGameStatus.set 'state', 'coding'
    @realTimePlayerStatus.set 'state', 'available'
    Backbone.Mediator.publish 'real-time-multiplayer:player-status', status: 'Waiting for opponent..'

  onRealTimeSessionChanged: (e) =>
    # console.log 'PlayLevelView onRealTimeSessionChanged', e
    if e.get('state') is 'finished'
      @realTimeGameEnded()
      Backbone.Mediator.publish 'real-time-multiplayer:left-game', {}

  onRealTimePlayerAdded: (e) =>
    # console.log 'PlayLevelView onRealTimePlayerAdded', e
    # Assume game is full, game on
    if @realTimeSession.get('state') is 'creating'
      @realTimeSession.set 'state', 'coding'
      @realTimePlayerStatus.set 'state', 'unavailable'
      @realTimeOpponent = new RealTimeModel('multiplayer_level_sessions/' + @realTimeSession.id + '/players/' + e.id)
      @realTimeOpponent.on 'change', @onRealTimeOpponentChanged
      Backbone.Mediator.publish 'real-time-multiplayer:player-status', status: 'Playing against ' + e.get('name')
    else
      console.error 'PlayLevelView onRealTimePlayerAdded session in unexpected state', @realTimeSession.get('state')

  onRealTimeOpponentChanged: (e) =>
    # console.log 'PlayLevelView onRealTimeOpponentChanged', e
    switch @realTimeOpponent.get('state')
      when 'left'
        console.info 'Real-time multiplayer opponent left the game'
        opponentID = @realTimeOpponent.id
        @realTimeGameEnded()
        Backbone.Mediator.publish 'real-time-multiplayer:left-game', userID: opponentID
      when 'submitted'
        # TODO: What should this message say?
        Backbone.Mediator.publish 'real-time-multiplayer:player-status', status: @realTimeOpponent.get('name') + ' waiting for your code'

  joinRealTimeMultiplayerGame: (e) ->
    unless @realTimeSession?
      # TODO: Necessary for real-time multiplayer sessions?
      @session.set('submittedCodeLanguage', @session.get('codeLanguage'))
      @session.save()

      @realTimeSession = new RealTimeModel 'multiplayer_level_sessions/' + e.realTimeSessionID
      @realTimeSession.on 'change', @onRealTimeSessionChanged
      @realTimePlayers = new RealTimeCollection 'multiplayer_level_sessions/' + e.realTimeSessionID + '/players'
      @realTimePlayers.on 'add', @onRealTimePlayerAdded
      @realTimePlayerGameStatus = new RealTimeModel 'multiplayer_level_sessions/' + e.realTimeSessionID + '/players/' + me.id
    # TODO: Follow up in MultiplayerView to see if double joins can be avoided
    # else
    #   console.error 'Joining real-time multiplayer game with an existing @realTimeSession.'

  onRealTimeMultiplayerJoinedGame: (e) ->
    # console.log 'PlayLevelView onRealTimeMultiplayerJoinedGame', e
    @joinRealTimeMultiplayerGame e
    @realTimePlayerGameStatus.set 'state', 'coding'
    @realTimePlayerStatus.set 'state', 'unavailable'
    unless @realTimeOpponent?
      for id, player of @realTimeSession.get('players')
        if id isnt me.id
          @realTimeOpponent = new RealTimeModel 'multiplayer_level_sessions/' + e.realTimeSessionID + '/players/' + id
          @realTimeOpponent.on 'change', @onRealTimeOpponentChanged
          Backbone.Mediator.publish 'real-time-multiplayer:player-status', status: 'Playing against ' + player.name
    unless @realTimeOpponent?
      console.error 'Did not find an oppoonent in onRealTimeMultiplayerJoinedGame.'
    @updateTeam()

  onRealTimeMultiplayerLeftGame: (e) ->
    # console.log 'PlayLevelView onRealTimeMultiplayerLeftGame', e
    if e.userID? and e.userID is me.id
      @realTimePlayerGameStatus.set 'state', 'left'
      @realTimeGameEnded()

  realTimeMultiplayerContinueGame: (realTimeSessionID) ->
    # console.log 'PlayLevelView realTimeMultiplayerContinueGame', realTimeSessionID, me.id
    Backbone.Mediator.publish 'real-time-multiplayer:joined-game', realTimeSessionID: realTimeSessionID

    console.info 'Setting my game status to ready'
    @realTimePlayerGameStatus.set 'state', 'ready'

    if @realTimeOpponent.get('state') is 'ready'
      @realTimeOpponentIsReady()
    else
      console.info 'Waiting for opponent to be ready'
      @realTimeOpponent.on 'change', @realTimeOpponentMaybeReady

  realTimeOpponentMaybeReady: =>
    # console.log 'PlayLevelView realTimeOpponentMaybeReady'
    if @realTimeOpponent.get('state') is 'ready'
      @realTimeOpponent.off 'change', @realTimeOpponentMaybeReady
      @realTimeOpponentIsReady()

  realTimeOpponentIsReady: =>
    console.info 'All real-time multiplayer players are ready!'
    @realTimeSession.set 'state', 'running'
    Backbone.Mediator.publish 'real-time-multiplayer:player-status', status: 'Battling ' + @realTimeOpponent.get('name')
    Backbone.Mediator.publish 'tome:manual-cast', {realTime: true}

  realTimeGameEnded: ->
    if @realTimeOpponent?
      @realTimeOpponent.off 'change', @onRealTimeOpponentChanged
      @realTimeOpponent = null
    if @realTimePlayers?
      @realTimePlayers.off 'add', @onRealTimePlayerAdded
      @realTimePlayers = null
    if @realTimeSession?
      @realTimeSession.off 'change', @onRealTimeSessionChanged
      @realTimeSession.set 'state', 'finished'
      @realTimeSession = null
    if @realTimePlayerGameStatus?
      @realTimePlayerGameStatus = null
    if @realTimePlayerStatus?
      @realTimePlayerStatus.set 'state', 'playing'
    Backbone.Mediator.publish 'real-time-multiplayer:player-status', status: ''

  onRealTimeMultiplayerCast: (e) ->
    # console.log 'PlayLevelView onRealTimeMultiplayerCast', e
    unless @realTimeSession
      console.error 'onRealTimeMultiplayerCast without a multiplayerSession'
      return

    # Set submissionCount for created real-time multiplayer session
    if me.id is @realTimeSession.get('creator')
      sessionState = @session.get('state')
      if sessionState?
        submissionCount = sessionState.submissionCount
        console.info 'Setting multiplayer submissionCount to', submissionCount
        @realTimeSession.set 'submissionCount', submissionCount
      else
        console.error 'Failed to read sessionState in onRealTimeMultiplayerCast'

    players = new RealTimeCollection('multiplayer_level_sessions/' + @realTimeSession.id + '/players')
    myPlayer = opponentPlayer = null
    players.each (player) ->
      if player.id is me.id
        myPlayer = player
      else
        opponentPlayer = player
    if myPlayer
      console.info 'Submitting my code'
      # Transpile code
      # Copied from scripts/transpile.coffee
      # TODO: Should this live somewhere else?
      transpiledCode = {}
      for thang, spells of @session.get('code')
        transpiledCode[thang] = {}
        for spellID, spell of spells
          spellName = thang + '/' + spellID
          continue if @session.get('teamSpells') and not (spellName in @session.get('teamSpells')[@session.get('team')])
          # console.log "PlayLevelView Transpiling spell #{spellName}"
          aetherOptions = createAetherOptions functionName: spellID, codeLanguage: @session.get('submittedCodeLanguage')
          aether = new Aether aetherOptions
          transpiledCode[thang][spellID] = aether.transpile spell
      # console.log "PlayLevelView transpiled code", transpiledCode
      @session.set 'transpiledCode', transpiledCode
      @session.patch()
      myPlayer.set 'state', 'submitted'
    else
      console.error 'Did not find my player in onRealTimeMultiplayerCast'
    if opponentPlayer
      # TODO: Shouldn't need nested opponentPlayer change listeners here
      state = opponentPlayer.get('state')
      console.info 'Other player is', state
      if state in ['submitted', 'ready']
        @realTimeOpponentSubmittedCode opponentPlayer, myPlayer
      else
        # Wait for opponent to submit their code
        Backbone.Mediator.publish 'real-time-multiplayer:player-status', status: 'Waiting for code from ' + @realTimeOpponent.get('name')
        opponentPlayer.on 'change', (e) =>
          state = opponentPlayer.get('state')
          if state in ['submitted', 'ready']
            @realTimeOpponentSubmittedCode opponentPlayer, myPlayer
            opponentPlayer.off 'change'
    else
      console.error 'Did not find opponent player in onRealTimeMultiplayerCast'

  onRealTimeMultiplayerPlaybackEnded: ->
    if @realTimeSession?
      @realTimeSession.set 'state', 'coding'
      @realTimePlayers.each (player) -> player.set 'state', 'coding' if player.id is me.id
    if @realTimeOpponent?
      Backbone.Mediator.publish 'real-time-multiplayer:player-status', status: 'Playing against ' + @realTimeOpponent.get('name')

  realTimeOpponentSubmittedCode: (opponentPlayer, myPlayer) =>
    # console.log 'PlayLevelView realTimeOpponentSubmittedCode', @realTimeSession.id, opponentPlayer.get('level_session')
    # Read submissionCount for joined real-time multiplayer session
    if me.id isnt @realTimeSession.get('creator')
      sessionState = @session.get('state') ? {}
      newSubmissionCount = @realTimeSession.get 'submissionCount'
      if newSubmissionCount?
        # TODO: This isn't always getting updated where the random seed generation uses it.
        sessionState.submissionCount = parseInt newSubmissionCount
        console.info 'Got multiplayer submissionCount', sessionState.submissionCount
        @session.set 'state', sessionState
        @session.patch()

    # Reload this level so the opponent session can easily be wired up
    Backbone.Mediator.publish 'router:navigate',
      route: "/play/level/#{@levelID}"
      viewClass: PlayLevelView
      viewArgs: [{supermodel: @supermodel, autoUnveil: true, realTimeMultiplayerSessionID: @realTimeSession.id, opponent: opponentPlayer.get('level_session'), team: @team}, @levelID]

  updateTeam: ->
    # If not creator, and same team as creator, then switch teams
    # TODO: Assumes there are only 'humans' and 'ogres'

    unless @realTimeOpponent?
      console.error 'Tried to switch teams without a real-time opponent.'
      return
    unless @realTimeSession?
      console.error 'Tried to switch teams without a real-time session.'
      return
    return if me.id is @realTimeSession.get('creator')

    oldTeam = @realTimeOpponent.get('team')
    return unless oldTeam is @session.get('team')

    # Need to switch to other team
    newTeam = if oldTeam is 'humans' then 'ogres' else 'humans'
    console.info "Switching from team #{oldTeam} to #{newTeam}"

    # Move code from old team to new team
    # Assumes teamSpells has matching spells for each team
    # TODO: Similar to code in loadOpponentTeam, consolidate?
    code = @session.get 'code'
    teamSpells = @session.get 'teamSpells'
    for oldSpellKey in teamSpells[oldTeam]
      [oldThang, oldSpell] = oldSpellKey.split '/'
      oldCode = code[oldThang]?[oldSpell]
      continue unless oldCode?
      # Move oldCode to new team under same spell
      for newSpellKey in teamSpells[newTeam]
        [newThang, newSpell] = newSpellKey.split '/'
        if newSpell is oldSpell
          # Found spell location under new team
          console.log "Swapping spell=#{oldSpell} from #{oldThang} to #{newThang}"
          if code[newThang]?[oldSpell]?
            # Option 1: have a new spell to swap
            code[oldThang][oldSpell] = code[newThang][oldSpell]
          else
            # Option 2: no new spell to swap
            delete code[oldThang][oldSpell]
          code[newThang] = {} unless code[newThang]?
          code[newThang][oldSpell] = oldCode
          break

    @setTeam newTeam # Sets @session 'team'
    sessionState = @session.get('state')
    if sessionState?
    # TODO: Don't hard code thangID
      sessionState.selected = if newTeam is 'humans' then 'Hero Placeholder' else 'Hero Placeholder 1'
      @session.set 'state', sessionState
    @session.set 'code', code
    @session.patch()

    if sessionState?
      # TODO: Don't hardcode spellName
      Backbone.Mediator.publish 'level:select-sprite', thangID: sessionState.selected, spellName: 'plan'

# End Real-time Multiplayer ######################################################