xonstat/models.py

   1 import json
   2 import logging
   3 import math
   4 import sqlalchemy
   5 import sqlalchemy.sql.functions as sfunc
   6 from datetime import timedelta
   7 from sqlalchemy.orm import mapper
   8 from sqlalchemy.orm import scoped_session
   9 from sqlalchemy.orm import sessionmaker
  10 from sqlalchemy.ext.declarative import declarative_base
  11 from xonstat.elo import KREDUCTION, ELOPARMS
  12 from xonstat.util import strip_colors, html_colors, pretty_date
  13
  14 log = logging.getLogger(__name__)
  15
  16 DBSession = scoped_session(sessionmaker())
  17 Base = declarative_base()
  18
  19 # define objects for all tables
  20 class Player(object):
  21     def nick_html_colors(self):
  22         if self.nick is None:
  23             return "Anonymous Player"
  24         else:
  25             return html_colors(self.nick)
  26
  27     def nick_strip_colors(self):
  28         if self.nick is None:
  29             return "Anonymous Player"
  30         else:
  31             return strip_colors(self.nick)
  32
  33     def joined_pretty_date(self):
  34         return pretty_date(self.create_dt)
  35
  36     def __repr__(self):
  37         return "<Player(%s, %s)>" % (self.player_id, self.nick.encode('utf-8'))
  38
  39     def to_dict(self):
  40         return {'player_id':self.player_id, 'name':self.nick.encode('utf-8')}
  41
  42
  43 class GameType(object):
  44     def __repr__(self):
  45         return "<GameType(%s, %s, %s)>" % (self.game_type_cd, self.descr, self.active_ind)
  46
  47     def to_dict(self):
  48         return {'game_type_cd':self.game_type_cd, 'name':self.descr, 'active':self.active_ind}
  49
  50
  51 class Weapon(object):
  52     def __repr__(self):
  53         return "<Weapon(%s, %s, %s)>" % (self.weapon_cd, self.descr, self.active_ind)
  54
  55     def to_dict(self):
  56         return {'weapon_cd':self.weapon_cd, 'name':self.descr, 'active':self.active_ind}
  57
  58
  59 class Server(object):
  60     def __init__(self, name=None, hashkey=None, ip_addr=None):
  61         self.name = name
  62         self.hashkey = hashkey
  63         self.ip_addr = ip_addr
  64
  65     def __repr__(self):
  66         return "<Server(%s, %s)>" % (self.server_id, self.name.encode('utf-8'))
  67
  68     def to_dict(self):
  69         return {'server_id':self.server_id, 'name':self.name.encode('utf-8')}
  70
  71
  72 class Map(object):
  73     def __init__(self, name=None):
  74         self.name = name
  75
  76     def __repr__(self):
  77         return "<Map(%s, %s, %s)>" % (self.map_id, self.name, self.version)
  78
  79     def to_dict(self):
  80         return {'map_id':self.map_id, 'name':self.name, 'version':self.version}
  81
  82
  83 class Game(object):
  84     def __init__(self, game_id=None, start_dt=None, game_type_cd=None,
  85             server_id=None, map_id=None, winner=None):
  86         self.game_id = game_id
  87         self.start_dt = start_dt
  88         self.game_type_cd = game_type_cd
  89         self.server_id = server_id
  90         self.map_id = map_id
  91         self.winner = winner
  92
  93     def __repr__(self):
  94         return "<Game(%s, %s, %s, %s)>" % (self.game_id, self.start_dt, self.game_type_cd, self.server_id)
  95
  96     def to_dict(self):
  97         return {'game_id':self.game_id, 'start':self.start_dt.strftime('%Y-%m-%dT%H:%M:%SZ'), 'game_type_cd':self.game_type_cd, 'server_id':self.server_id}
  98
  99     def fuzzy_date(self):
 100         return pretty_date(self.start_dt)
 101
 102     def process_elos(self, session, game_type_cd=None):
 103         if game_type_cd is None:
 104             game_type_cd = self.game_type_cd
 105
 106         # we do not have the actual duration of the game, so use the
 107         # maximum alivetime of the players instead
 108         duration = 0
 109         for d in session.query(sfunc.max(PlayerGameStat.alivetime)).\
 110                     filter(PlayerGameStat.game_id==self.game_id).\
 111                     one():
 112             duration = d.seconds
 113
 114         scores = {}
 115         alivetimes = {}
 116         for (p,s,a) in session.query(PlayerGameStat.player_id,
 117                 PlayerGameStat.score, PlayerGameStat.alivetime).\
 118                 filter(PlayerGameStat.game_id==self.game_id).\
 119                 filter(PlayerGameStat.alivetime > timedelta(seconds=0)).\
 120                 filter(PlayerGameStat.player_id > 2).\
 121                 all():
 122                     # scores are per second
 123                     scores[p] = s/float(a.seconds)
 124                     alivetimes[p] = a.seconds
 125
 126         player_ids = scores.keys()
 127
 128         elos = {}
 129         for e in session.query(PlayerElo).\
 130                 filter(PlayerElo.player_id.in_(player_ids)).\
 131                 filter(PlayerElo.game_type_cd==game_type_cd).all():
 132                     elos[e.player_id] = e
 133
 134         # ensure that all player_ids have an elo record
 135         for pid in player_ids:
 136             if pid not in elos.keys():
 137                 elos[pid] = PlayerElo(pid, game_type_cd)
 138
 139         for pid in player_ids:
 140             elos[pid].k = KREDUCTION.eval(elos[pid].games, alivetimes[pid],
 141                     duration)
 142             if elos[pid].k == 0:
 143                 del(elos[pid])
 144                 del(scores[pid])
 145                 del(alivetimes[pid])
 146
 147         elos = self.update_elos(session, elos, scores, ELOPARMS)
 148
 149         # add the elos to the session for committing
 150         for e in elos:
 151             session.add(elos[e])
 152
 153         if game_type_cd == 'duel':
 154             self.process_elos(session, "dm")
 155
 156
 157     def update_elos(self, session, elos, scores, ep):
 158         eloadjust = {}
 159         for pid in elos.keys():
 160             eloadjust[pid] = 0
 161
 162         if len(elos) < 2:
 163             return elos
 164
 165         pids = elos.keys()
 166
 167         for i in xrange(0, len(pids)):
 168             ei = elos[pids[i]]
 169             for j in xrange(i+1, len(pids)):
 170                 ej = elos[pids[j]]
 171                 si = scores[ei.player_id]
 172                 sj = scores[ej.player_id]
 173
 174                 # normalize scores
 175                 ofs = min(0, si, sj)
 176                 si -= ofs
 177                 sj -= ofs
 178                 if si + sj == 0:
 179                     si, sj = 1, 1 # a draw
 180
 181                 # real score factor
 182                 scorefactor_real = si / float(si + sj)
 183
 184                 # estimated score factor by elo
 185                 elodiff = min(ep.maxlogdistance, max(-ep.maxlogdistance,
 186                     (float(ei.elo) - float(ej.elo)) * ep.logdistancefactor))
 187                 scorefactor_elo = 1 / (1 + math.exp(-elodiff))
 188
 189                 # how much adjustment is good?
 190                 # scorefactor(elodiff) = 1 / (1 + e^(-elodiff * logdistancefactor))
 191                 # elodiff(scorefactor) = -ln(1/scorefactor - 1) / logdistancefactor
 192                 # elodiff'(scorefactor) = 1 / ((scorefactor) (1 - scorefactor) logdistancefactor)
 193                 # elodiff'(scorefactor) >= 4 / logdistancefactor
 194
 195                 # adjust'(scorefactor) = K1 + K2
 196
 197                 # so we want:
 198                 # K1 + K2 <= 4 / logdistancefactor <= elodiff'(scorefactor)
 199                 # as we then don't overcompensate
 200
 201                 adjustment = scorefactor_real - scorefactor_elo
 202                 eloadjust[ei.player_id] += adjustment
 203                 eloadjust[ej.player_id] -= adjustment
 204         elo_deltas = {}
 205         for pid in pids:
 206             elo_delta = eloadjust[pid] * elos[pid].k * ep.global_K / float(len(elos) - 1)
 207
 208             if float(elos[pid].elo) + elo_delta < ep.floor:
 209                 elo_deltas[pid] = elos[pid].elo - ep.floor
 210             else:
 211                 elo_deltas[pid] = elo_delta
 212
 213             # can't go below the floor
 214             elos[pid].elo = max(float(elos[pid].elo) + elo_delta, ep.floor)
 215             elos[pid].games += 1
 216
 217         self.save_elo_deltas(session, elo_deltas)
 218
 219         return elos
 220
 221
 222     def save_elo_deltas(self, session, elo_deltas):
 223         """
 224         Saves the amount by which each player's Elo goes up or down
 225         in a given game in the PlayerGameStat row, allowing for scoreboard display.
 226
 227         elo_deltas is a dictionary such that elo_deltas[player_id] is the elo_delta
 228         for that player_id.
 229         """
 230         pgstats = {}
 231         for pgstat in session.query(PlayerGameStat).\
 232                 filter(PlayerGameStat.game_id == self.game_id).\
 233                 all():
 234                     pgstats[pgstat.player_id] = pgstat
 235
 236         for pid in elo_deltas.keys():
 237             try:
 238                 pgstats[pid].elo_delta = elo_deltas[pid]
 239                 session.add(pgstats[pid])
 240             except:
 241                 log.debug("Unable to save Elo delta value for player_id {0}".format(pid))
 242
 243
 244 class PlayerGameStat(object):
 245     def __init__(self, player_game_stat_id=None, create_dt=None):
 246         self.player_game_stat_id = player_game_stat_id
 247         self.create_dt = create_dt
 248
 249     def __repr__(self):
 250         return "<PlayerGameStat(%s, %s, %s)>" % (self.player_id, self.game_id, self.create_dt)
 251
 252     def to_dict(self):
 253         return {'player_id':self.player_id, 'game_id':self.game_id, 'create_dt':self.create_dt.strftime('%Y-%m-%dT%H:%M:%SZ')}
 254
 255     def nick_stripped(self):
 256         if self.nick is None:
 257             return "Anonymous Player"
 258         else:
 259             return strip_colors(self.nick)
 260
 261     def nick_html_colors(self):
 262         if self.nick is None:
 263             return "Anonymous Player"
 264         else:
 265             return html_colors(self.nick)
 266
 267     def team_html_color(self):
 268         # blue
 269         if self.team == 5:
 270             return "red"
 271         # red
 272         if self.team == 14:
 273             return "blue"
 274         if self.team == 13:
 275             return "yellow"
 276         if self.team == 10:
 277             return "pink"
 278
 279
 280 class Achievement(object):
 281     def __repr__(self):
 282         return "<Achievement(%s, %s, %s)>" % (self.achievement_cd, self.descr, self.limit)
 283
 284     def to_dict(self):
 285         return {'achievement_cd':self.achievement_cd, 'name':self.descr, 'limit':self.limit}
 286
 287
 288 class PlayerAchievement(object):
 289     def __repr__(self):
 290         return "<PlayerAchievement(%s, %s)>" % (self.player_id, self.achievement_cd)
 291
 292     def to_dict(self):
 293         return {'player_id':self.player_id, 'achievement_cd':self.achievement_cd}
 294
 295
 296 class PlayerWeaponStat(object):
 297     def __repr__(self):
 298         return "<PlayerWeaponStat(%s, %s, %s)>" % (self.player_weapon_stats_id, self.player_id, self.game_id)
 299
 300     def to_dict(self):
 301         return {'player_weapon_stats_id':self.player_weapon_stats_id, 'player_id':self.player_id, 'game_id':self.game_id}
 302
 303
 304 class Hashkey(object):
 305     def __init__(self, player_id=None, hashkey=None):
 306         self.player_id = player_id
 307         self.hashkey = hashkey
 308
 309     def __repr__(self):
 310         return "<Hashkey(%s, %s)>" % (self.player_id, self.hashkey)
 311
 312     def to_dict(self):
 313         return {'player_id':self.player_id, 'hashkey':self.hashkey}
 314
 315
 316 class PlayerNick(object):
 317     def __repr__(self):
 318         return "<PlayerNick(%s, %s)>" % (self.player_id, self.stripped_nick)
 319
 320     def to_dict(self):
 321         return {'player_id':self.player_id, 'name':self.stripped_nick}
 322
 323
 324 class PlayerElo(object):
 325     def __init__(self, player_id=None, game_type_cd=None):
 326
 327         self.player_id = player_id
 328         self.game_type_cd = game_type_cd
 329         self.score = 0
 330         self.games = 0
 331         self.elo = ELOPARMS.initial
 332
 333     def __repr__(self):
 334         return "<PlayerElo(pid=%s, gametype=%s, elo=%s)>" % (self.player_id, self.game_type_cd, self.elo)
 335
 336     def to_dict(self):
 337         return {'player_id':self.player_id, 'game_type_cd':self.game_type_cd, 'elo':self.elo}
 338
 339
 340 class PlayerRank(object):
 341
 342     def nick_html_colors(self):
 343         if self.nick is None:
 344             return "Anonymous Player"
 345         else:
 346             return html_colors(self.nick)
 347
 348     def __repr__(self):
 349         return "<PlayerRank(pid=%s, gametype=%s, rank=%s)>" % (self.player_id, self.game_type_cd, self.rank)
 350
 351     def to_dict(self):
 352         return {'player_id':self.player_id, 'game_type_cd':self.game_type_cd, 'rank':self.rank}
 353
 354
 355 def initialize_db(engine=None):
 356     DBSession.configure(bind=engine)
 357     Base.metadata.bind = engine
 358     Base.metadata.create_all(engine)
 359     MetaData = sqlalchemy.MetaData(bind=engine, reflect=True)
 360
 361     # assign all those tables to an object
 362     achievements_table = MetaData.tables['achievements']
 363     cd_achievement_table = MetaData.tables['cd_achievement']
 364     cd_game_type_table = MetaData.tables['cd_game_type']
 365     cd_weapon_table = MetaData.tables['cd_weapon']
 366     db_version_table = MetaData.tables['db_version']
 367     games_table = MetaData.tables['games']
 368     hashkeys_table = MetaData.tables['hashkeys']
 369     maps_table = MetaData.tables['maps']
 370     player_game_stats_table = MetaData.tables['player_game_stats']
 371     players_table = MetaData.tables['players']
 372     player_weapon_stats_table = MetaData.tables['player_weapon_stats']
 373     servers_table = MetaData.tables['servers']
 374     player_nicks_table = MetaData.tables['player_nicks']
 375     player_elos_table = MetaData.tables['player_elos']
 376     player_ranks_table = MetaData.tables['player_ranks']
 377
 378     # now map the tables and the objects together
 379     mapper(PlayerAchievement, achievements_table)
 380     mapper(Achievement, cd_achievement_table)
 381     mapper(GameType, cd_game_type_table)
 382     mapper(Weapon, cd_weapon_table)
 383     mapper(Game, games_table)
 384     mapper(Hashkey, hashkeys_table)
 385     mapper(Map, maps_table)
 386     mapper(PlayerGameStat, player_game_stats_table)
 387     mapper(Player, players_table)
 388     mapper(PlayerWeaponStat, player_weapon_stats_table)
 389     mapper(Server, servers_table)
 390     mapper(PlayerNick, player_nicks_table)
 391     mapper(PlayerElo, player_elos_table)
 392     mapper(PlayerRank, player_ranks_table)