mirror of
https://github.com/codeninjasllc/codecombat.git
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140 lines
8.1 KiB
CoffeeScript
140 lines
8.1 KiB
CoffeeScript
log = require 'winston'
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async = require 'async'
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errors = require '../../commons/errors'
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scoringUtils = require './scoringUtils'
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LevelSession = require '../../levels/sessions/LevelSession'
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Mandate = require '../../models/Mandate'
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module.exports = getTwoGames = (req, res) ->
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#return errors.unauthorized(res, 'You need to be logged in to get games.') unless req.user?.get('email')
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return if scoringUtils.simulatorIsTooOld req, res
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humansSessionID = req.body.humansGameID
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ogresSessionID = req.body.ogresGameID
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return getSpecificSessions res, humansSessionID, ogresSessionID if humansSessionID and ogresSessionID
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Mandate.findOne({}).cache(5 * 60 * 1000).exec (err, mandate) ->
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if err then return errors.serverError res, "Error fetching our Mandate: #{err}"
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if (throughputRatio = mandate?.get 'simulationThroughputRatio')? and Math.random() > throughputRatio
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return sendSessionsResponse(res)(null, [])
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options =
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background: req.body.background
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levelID: req.body.levelID
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leagueID: req.body.leagueID
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getRandomSessions req.user, options, sendSessionsResponse(res)
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sessionSelectionString = 'team totalScore transpiledCode submittedCodeLanguage teamSpells levelID creatorName creator submitDate leagues'
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sendSessionsResponse = (res) ->
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(err, sessions) ->
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if err then return errors.serverError res, "Couldn't get two games to simulate: #{err}"
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unless _.filter(sessions).length is 2
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res.send 204, 'No games to score.'
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return res.end()
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taskObject = messageGenerated: Date.now(), sessions: (scoringUtils.formatSessionInformation session for session in sessions)
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#console.log 'Dispatching ladder game simulation between', taskObject.sessions[0].creatorName, 'and', taskObject.sessions[1].creatorName
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scoringUtils.sendResponseObject res, taskObject
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getSpecificSessions = (res, humansSessionID, ogresSessionID) ->
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async.map [humansSessionID, ogresSessionID], getSpecificSession, sendSessionsResponse(res)
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getSpecificSession = (sessionID, callback) ->
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LevelSession.findOne(_id: sessionID).select(sessionSelectionString).lean().exec (err, session) ->
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if err? then return callback "Couldn\'t find target simulation session #{sessionID}"
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callback null, session
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getRandomSessions = (user, options, callback) ->
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# Determine whether to play a random match, an internal league match, or an external league match.
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# Only people in a league will end up simulating internal league matches (for leagues they're in) except by dumb chance.
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# If we don't like that, we can rework sampleByLevel to have an opportunity to switch to internal leagues if the first session had a league affiliation.
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if not leagueID = options.leagueID
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leagueIDs = user?.get('clans') or []
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leagueIDs = leagueIDs.concat user?.get('courseInstances') or []
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leagueIDs = (leagueID + '' for leagueID in leagueIDs) # Make sure to fetch them as strings.
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return sampleByLevel options, callback unless leagueIDs.length and Math.random() > 1 / leagueIDs.length
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leagueID = _.sample leagueIDs
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queryParameters = {'leagues.leagueID': leagueID}
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queryParameters.levelID = options.levelID if options.levelID
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findRandomSession queryParameters, (err, session) ->
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if err then return callback err
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unless session then return sampleByLevel options, callback
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otherTeam = scoringUtils.calculateOpposingTeam session.team
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queryParameters = team: otherTeam, levelID: session.levelID
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if Math.random() < 0.5
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# Try to play a match on the internal league ladder for this level
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queryParameters['leagues.leagueID'] = leagueID
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findNextLeagueOpponent session, queryParameters, (err, otherSession) ->
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if err then return callback err
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if otherSession
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session.shouldUpdateLastOpponentSubmitDateForLeague = leagueID
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return callback null, [session, otherSession]
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# No opposing league session found; try to play an external match
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delete queryParameters['leagues.leagueID']
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delete queryParameters.submitDate
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findRandomSession queryParameters, (err, otherSession) ->
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if err then return callback err
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callback null, [session, otherSession]
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else
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# Play what will probably end up being an external match
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findRandomSession queryParameters, (err, otherSession) ->
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if err then return callback err
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callback null, [session, otherSession]
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# Sampling by level: we pick a level, then find a human and ogre session for that level, one at random, one biased towards recent submissions.
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#ladderLevelIDs = ['greed', 'criss-cross', 'brawlwood', 'dungeon-arena', 'gold-rush', 'sky-span'] # Let's not give any extra simulations to old ladders.
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ladderLevelIDs = ['dueling-grounds', 'cavern-survival', 'multiplayer-treasure-grove', 'harrowland', 'zero-sum', 'ace-of-coders', 'wakka-maul']
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backgroundLadderLevelIDs = _.without ladderLevelIDs, 'zero-sum', 'ace-of-coders'
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sampleByLevel = (options, callback) ->
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levelID = options.levelID or _.sample(if options.background then backgroundLadderLevelIDs else ladderLevelIDs)
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favorRecentHumans = Math.random() < 0.5 # We pick one session favoring recent submissions, then find another one uniformly to play against
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async.map [{levelID: levelID, team: 'humans', favorRecent: favorRecentHumans}, {levelID: levelID, team: 'ogres', favorRecent: not favorRecentHumans}], findRandomSession, callback
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findNextLeagueOpponent = (session, queryParams, callback) ->
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queryParams.submitted = true
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league = _.find session.leagues, leagueID: queryParams['leagues.leagueID']
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lastOpponentSubmitDate = league.lastOpponentSubmitDate or new Date()
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queryParams.submitDate = $lt: lastOpponentSubmitDate
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sort = submitDate: -1
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LevelSession.findOne(queryParams).sort(sort).select(sessionSelectionString).lean().exec (err, otherSession) ->
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return callback err if err
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if otherSession and otherSession.creator + '' is session.creator + ''
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queryParams.submitDate.$lt = new Date(new Date(queryParams.submitDate.$lt) - 1)
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return LevelSession.findOne(queryParams).sort(sort).select(sessionSelectionString).lean().exec callback
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callback null, otherSession
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findRandomSession = (queryParams, callback) ->
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# In MongoDB 3.2, we will be able to easily get a random document with aggregate $sample: https://jira.mongodb.org/browse/SERVER-533
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queryParams.submitted = true
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favorRecent = queryParams.favorRecent
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delete queryParams.favorRecent
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if favorRecent
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return findRecentRandomSession queryParams, callback
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queryParams.randomSimulationIndex = $lte: Math.random()
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sort = randomSimulationIndex: -1
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LevelSession.findOne(queryParams).sort(sort).select(sessionSelectionString).lean().exec (err, session) ->
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return callback err if err
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return callback null, session if session
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delete queryParams.randomSimulationIndex # Just find the highest-indexed session, if our randomSimulationIndex was lower than the lowest one.
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LevelSession.findOne(queryParams).sort(sort).select(sessionSelectionString).lean().exec (err, session) ->
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return callback err if err
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callback null, session
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findRecentRandomSession = (queryParams, callback) ->
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# We pick a random submitDate between the first submit date for the level and now, then do a $lt fetch to find a session to simulate.
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# We bias it towards recently submitted sessions.
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findEarliestSubmission queryParams, (err, startDate) ->
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return callback err, null unless startDate
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now = new Date()
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interval = now - startDate
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cutoff = new Date now - Math.pow(Math.random(), 4) * interval
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queryParams.submitDate = $gte: startDate, $lt: cutoff
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LevelSession.findOne(queryParams).sort(submitDate: -1).select(sessionSelectionString).lean().exec (err, session) ->
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return callback err if err
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callback null, session
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earliestSubmissionCache = {}
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findEarliestSubmission = (queryParams, callback) ->
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cacheKey = JSON.stringify queryParams
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return callback null, cached if cached = earliestSubmissionCache[cacheKey]
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LevelSession.findOne(queryParams).sort(submitDate: 1).lean().exec (err, earliest) ->
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return callback err if err
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result = earliestSubmissionCache[cacheKey] = earliest?.submitDate
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callback null, result
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