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         # no longer calculate DM elo for a duel game
 154         # if game_type_cd == 'duel':
 155             # self.process_elos(session, "dm")
 156
 157
 158     def update_elos(self, session, elos, scores, ep):
 159         eloadjust = {}
 160         for pid in elos.keys():
 161             eloadjust[pid] = 0
 162
 163         if len(elos) < 2:
 164             return elos
 165
 166         pids = elos.keys()
 167
 168         for i in xrange(0, len(pids)):
 169             ei = elos[pids[i]]
 170             for j in xrange(i+1, len(pids)):
 171                 ej = elos[pids[j]]
 172                 si = scores[ei.player_id]
 173                 sj = scores[ej.player_id]
 174
 175                 # normalize scores
 176                 ofs = min(0, si, sj)
 177                 si -= ofs
 178                 sj -= ofs
 179                 if si + sj == 0:
 180                     si, sj = 1, 1 # a draw
 181
 182                 # real score factor
 183                 scorefactor_real = si / float(si + sj)
 184
 185                 # estimated score factor by elo
 186                 elodiff = min(ep.maxlogdistance, max(-ep.maxlogdistance,
 187                     (float(ei.elo) - float(ej.elo)) * ep.logdistancefactor))
 188                 scorefactor_elo = 1 / (1 + math.exp(-elodiff))
 189
 190                 # how much adjustment is good?
 191                 # scorefactor(elodiff) = 1 / (1 + e^(-elodiff * logdistancefactor))
 192                 # elodiff(scorefactor) = -ln(1/scorefactor - 1) / logdistancefactor
 193                 # elodiff'(scorefactor) = 1 / ((scorefactor) (1 - scorefactor) logdistancefactor)
 194                 # elodiff'(scorefactor) >= 4 / logdistancefactor
 195
 196                 # adjust'(scorefactor) = K1 + K2
 197
 198                 # so we want:
 199                 # K1 + K2 <= 4 / logdistancefactor <= elodiff'(scorefactor)
 200                 # as we then don't overcompensate
 201
 202                 adjustment = scorefactor_real - scorefactor_elo
 203                 eloadjust[ei.player_id] += adjustment
 204                 eloadjust[ej.player_id] -= adjustment
 205
 206         elo_deltas = {}
 207         for pid in pids:
 208             new_elo = max(float(elos[pid].elo) + eloadjust[pid] * elos[pid].k * ep.global_K / float(len(elos) - 1), ep.floor)
 209
 210             # delta is new minus old
 211             elo_deltas[pid] = new_elo - float(elos[pid].elo)
 212
 213             log.debug("Player {0}'s Elo going from {1} to {2}.".format(pid,
 214                 elos[pid].elo, new_elo))
 215
 216             elos[pid].elo = new_elo
 217             elos[pid].games += 1
 218
 219         self.save_elo_deltas(session, elo_deltas)
 220
 221         return elos
 222
 223
 224     def save_elo_deltas(self, session, elo_deltas):
 225         """
 226         Saves the amount by which each player's Elo goes up or down
 227         in a given game in the PlayerGameStat row, allowing for scoreboard display.
 228
 229         elo_deltas is a dictionary such that elo_deltas[player_id] is the elo_delta
 230         for that player_id.
 231         """
 232         pgstats = {}
 233         for pgstat in session.query(PlayerGameStat).\
 234                 filter(PlayerGameStat.game_id == self.game_id).\
 235                 all():
 236                     pgstats[pgstat.player_id] = pgstat
 237
 238         for pid in elo_deltas.keys():
 239             try:
 240                 pgstats[pid].elo_delta = elo_deltas[pid]
 241                 session.add(pgstats[pid])
 242             except:
 243                 log.debug("Unable to save Elo delta value for player_id {0}".format(pid))
 244
 245
 246 class PlayerGameStat(object):
 247     def __init__(self, player_game_stat_id=None, create_dt=None):
 248         self.player_game_stat_id = player_game_stat_id
 249         self.create_dt = create_dt
 250
 251     def __repr__(self):
 252         return "<PlayerGameStat(%s, %s, %s)>" % (self.player_id, self.game_id, self.create_dt)
 253
 254     def to_dict(self):
 255         return {'player_id':self.player_id, 'game_id':self.game_id, 'create_dt':self.create_dt.strftime('%Y-%m-%dT%H:%M:%SZ')}
 256
 257     def nick_stripped(self):
 258         if self.nick is None:
 259             return "Anonymous Player"
 260         else:
 261             return strip_colors(self.nick)
 262
 263     def nick_html_colors(self):
 264         if self.nick is None:
 265             return "Anonymous Player"
 266         else:
 267             return html_colors(self.nick)
 268
 269     def team_html_color(self):
 270         # blue
 271         if self.team == 5:
 272             return "red"
 273         # red
 274         if self.team == 14:
 275             return "blue"
 276         if self.team == 13:
 277             return "yellow"
 278         if self.team == 10:
 279             return "pink"
 280
 281
 282 class Achievement(object):
 283     def __repr__(self):
 284         return "<Achievement(%s, %s, %s)>" % (self.achievement_cd, self.descr, self.limit)
 285
 286     def to_dict(self):
 287         return {'achievement_cd':self.achievement_cd, 'name':self.descr, 'limit':self.limit}
 288
 289
 290 class PlayerAchievement(object):
 291     def __repr__(self):
 292         return "<PlayerAchievement(%s, %s)>" % (self.player_id, self.achievement_cd)
 293
 294     def to_dict(self):
 295         return {'player_id':self.player_id, 'achievement_cd':self.achievement_cd}
 296
 297
 298 class PlayerWeaponStat(object):
 299     def __repr__(self):
 300         return "<PlayerWeaponStat(%s, %s, %s)>" % (self.player_weapon_stats_id, self.player_id, self.game_id)
 301
 302     def to_dict(self):
 303         return {'player_weapon_stats_id':self.player_weapon_stats_id, 'player_id':self.player_id, 'game_id':self.game_id}
 304
 305
 306 class Hashkey(object):
 307     def __init__(self, player_id=None, hashkey=None):
 308         self.player_id = player_id
 309         self.hashkey = hashkey
 310
 311     def __repr__(self):
 312         return "<Hashkey(%s, %s)>" % (self.player_id, self.hashkey)
 313
 314     def to_dict(self):
 315         return {'player_id':self.player_id, 'hashkey':self.hashkey}
 316
 317
 318 class PlayerNick(object):
 319     def __repr__(self):
 320         return "<PlayerNick(%s, %s)>" % (self.player_id, self.stripped_nick)
 321
 322     def to_dict(self):
 323         return {'player_id':self.player_id, 'name':self.stripped_nick}
 324
 325
 326 class PlayerElo(object):
 327     def __init__(self, player_id=None, game_type_cd=None):
 328
 329         self.player_id = player_id
 330         self.game_type_cd = game_type_cd
 331         self.score = 0
 332         self.games = 0
 333         self.elo = ELOPARMS.initial
 334
 335     def __repr__(self):
 336         return "<PlayerElo(pid=%s, gametype=%s, elo=%s)>" % (self.player_id, self.game_type_cd, self.elo)
 337
 338     def to_dict(self):
 339         return {'player_id':self.player_id, 'game_type_cd':self.game_type_cd, 'elo':self.elo}
 340
 341
 342 class PlayerRank(object):
 343
 344     def nick_html_colors(self):
 345         if self.nick is None:
 346             return "Anonymous Player"
 347         else:
 348             return html_colors(self.nick)
 349
 350     def __repr__(self):
 351         return "<PlayerRank(pid=%s, gametype=%s, rank=%s)>" % (self.player_id, self.game_type_cd, self.rank)
 352
 353     def to_dict(self):
 354         return {'player_id':self.player_id, 'game_type_cd':self.game_type_cd, 'rank':self.rank}
 355
 356
 357 def initialize_db(engine=None):
 358     DBSession.configure(bind=engine)
 359     Base.metadata.bind = engine
 360     Base.metadata.create_all(engine)
 361     MetaData = sqlalchemy.MetaData(bind=engine, reflect=True)
 362
 363     # assign all those tables to an object
 364     achievements_table = MetaData.tables['achievements']
 365     cd_achievement_table = MetaData.tables['cd_achievement']
 366     cd_game_type_table = MetaData.tables['cd_game_type']
 367     cd_weapon_table = MetaData.tables['cd_weapon']
 368     db_version_table = MetaData.tables['db_version']
 369     games_table = MetaData.tables['games']
 370     hashkeys_table = MetaData.tables['hashkeys']
 371     maps_table = MetaData.tables['maps']
 372     player_game_stats_table = MetaData.tables['player_game_stats']
 373     players_table = MetaData.tables['players']
 374     player_weapon_stats_table = MetaData.tables['player_weapon_stats']
 375     servers_table = MetaData.tables['servers']
 376     player_nicks_table = MetaData.tables['player_nicks']
 377     player_elos_table = MetaData.tables['player_elos']
 378     player_ranks_table = MetaData.tables['player_ranks']
 379
 380     # now map the tables and the objects together
 381     mapper(PlayerAchievement, achievements_table)
 382     mapper(Achievement, cd_achievement_table)
 383     mapper(GameType, cd_game_type_table)
 384     mapper(Weapon, cd_weapon_table)
 385     mapper(Game, games_table)
 386     mapper(Hashkey, hashkeys_table)
 387     mapper(Map, maps_table)
 388     mapper(PlayerGameStat, player_game_stats_table)
 389     mapper(Player, players_table)
 390     mapper(PlayerWeaponStat, player_weapon_stats_table)
 391     mapper(Server, servers_table)
 392     mapper(PlayerNick, player_nicks_table)
 393     mapper(PlayerElo, player_elos_table)
 394     mapper(PlayerRank, player_ranks_table)