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(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     def update_elos(self, elos, scores, ep):
 157         eloadjust = {}
 158         for pid in elos.keys():
 159             eloadjust[pid] = 0
 160
 161         if len(elos) < 2:
 162             return elos
 163
 164         pids = elos.keys()
 165
 166         for i in xrange(0, len(pids)):
 167             ei = elos[pids[i]]
 168             for j in xrange(i+1, len(pids)):
 169                 ej = elos[pids[j]]
 170                 si = scores[ei.player_id]
 171                 sj = scores[ej.player_id]
 172
 173                 # normalize scores
 174                 ofs = min(0, si, sj)
 175                 si -= ofs
 176                 sj -= ofs
 177                 if si + sj == 0:
 178                     si, sj = 1, 1 # a draw
 179
 180                 # real score factor
 181                 scorefactor_real = si / float(si + sj)
 182
 183                 # estimated score factor by elo
 184                 elodiff = min(ep.maxlogdistance, max(-ep.maxlogdistance,
 185                     (float(ei.elo) - float(ej.elo)) * ep.logdistancefactor))
 186                 scorefactor_elo = 1 / (1 + math.exp(-elodiff))
 187
 188                 # how much adjustment is good?
 189                 # scorefactor(elodiff) = 1 / (1 + e^(-elodiff * logdistancefactor))
 190                 # elodiff(scorefactor) = -ln(1/scorefactor - 1) / logdistancefactor
 191                 # elodiff'(scorefactor) = 1 / ((scorefactor) (1 - scorefactor) logdistancefactor)
 192                 # elodiff'(scorefactor) >= 4 / logdistancefactor
 193
 194                 # adjust'(scorefactor) = K1 + K2
 195
 196                 # so we want:
 197                 # K1 + K2 <= 4 / logdistancefactor <= elodiff'(scorefactor)
 198                 # as we then don't overcompensate
 199
 200                 adjustment = scorefactor_real - scorefactor_elo
 201                 eloadjust[ei.player_id] += adjustment
 202                 eloadjust[ej.player_id] -= adjustment
 203         for pid in pids:
 204             elos[pid].elo = max(float(elos[pid].elo) + eloadjust[pid] * elos[pid].k * ep.global_K / float(len(elos) - 1), ep.floor)
 205             elos[pid].games += 1
 206         return elos
 207
 208
 209 class PlayerGameStat(object):
 210     def __init__(self, player_game_stat_id=None, create_dt=None):
 211         self.player_game_stat_id = player_game_stat_id
 212         self.create_dt = create_dt
 213
 214     def __repr__(self):
 215         return "<PlayerGameStat(%s, %s, %s)>" % (self.player_id, self.game_id, self.create_dt)
 216
 217     def to_dict(self):
 218         return {'player_id':self.player_id, 'game_id':self.game_id, 'create_dt':self.create_dt.strftime('%Y-%m-%dT%H:%M:%SZ')}
 219
 220     def nick_stripped(self):
 221         if self.nick is None:
 222             return "Anonymous Player"
 223         else:
 224             return strip_colors(self.nick)
 225
 226     def nick_html_colors(self):
 227         if self.nick is None:
 228             return "Anonymous Player"
 229         else:
 230             return html_colors(self.nick)
 231
 232     def team_html_color(self):
 233         # blue
 234         if self.team == 5:
 235             return "red"
 236         # red
 237         if self.team == 14:
 238             return "blue"
 239         if self.team == 13:
 240             return "yellow"
 241         if self.team == 10:
 242             return "pink"
 243
 244
 245 class Achievement(object):
 246     def __repr__(self):
 247         return "<Achievement(%s, %s, %s)>" % (self.achievement_cd, self.descr, self.limit)
 248
 249     def to_dict(self):
 250         return {'achievement_cd':self.achievement_cd, 'name':self.descr, 'limit':self.limit}
 251
 252
 253 class PlayerAchievement(object):
 254     def __repr__(self):
 255         return "<PlayerAchievement(%s, %s)>" % (self.player_id, self.achievement_cd)
 256
 257     def to_dict(self):
 258         return {'player_id':self.player_id, 'achievement_cd':self.achievement_cd}
 259
 260
 261 class PlayerWeaponStat(object):
 262     def __repr__(self):
 263         return "<PlayerWeaponStat(%s, %s, %s)>" % (self.player_weapon_stats_id, self.player_id, self.game_id)
 264
 265     def to_dict(self):
 266         return {'player_weapon_stats_id':self.player_weapon_stats_id, 'player_id':self.player_id, 'game_id':self.game_id}
 267
 268
 269 class Hashkey(object):
 270     def __init__(self, player_id=None, hashkey=None):
 271         self.player_id = player_id
 272         self.hashkey = hashkey
 273
 274     def __repr__(self):
 275         return "<Hashkey(%s, %s)>" % (self.player_id, self.hashkey)
 276
 277     def to_dict(self):
 278         return {'player_id':self.player_id, 'hashkey':self.hashkey}
 279
 280
 281 class PlayerNick(object):
 282     def __repr__(self):
 283         return "<PlayerNick(%s, %s)>" % (self.player_id, self.stripped_nick)
 284
 285     def to_dict(self):
 286         return {'player_id':self.player_id, 'name':self.stripped_nick}
 287
 288
 289 class PlayerElo(object):
 290     def __init__(self, player_id=None, game_type_cd=None):
 291
 292         self.player_id = player_id
 293         self.game_type_cd = game_type_cd
 294         self.score = 0
 295         self.games = 0
 296         self.elo = ELOPARMS.initial
 297
 298     def __repr__(self):
 299         return "<PlayerElo(pid=%s, gametype=%s, elo=%s)>" % (self.player_id, self.game_type_cd, self.elo)
 300
 301     def to_dict(self):
 302         return {'player_id':self.player_id, 'game_type_cd':self.game_type_cd, 'elo':self.elo}
 303
 304
 305 class PlayerRank(object):
 306
 307     def nick_html_colors(self):
 308         if self.nick is None:
 309             return "Anonymous Player"
 310         else:
 311             return html_colors(self.nick)
 312
 313     def __repr__(self):
 314         return "<PlayerRank(pid=%s, gametype=%s, rank=%s)>" % (self.player_id, self.game_type_cd, self.rank)
 315
 316     def to_dict(self):
 317         return {'player_id':self.player_id, 'game_type_cd':self.game_type_cd, 'rank':self.rank}
 318
 319
 320 def initialize_db(engine=None):
 321     DBSession.configure(bind=engine)
 322     Base.metadata.bind = engine
 323     Base.metadata.create_all(engine)
 324     MetaData = sqlalchemy.MetaData(bind=engine, reflect=True)
 325
 326     # assign all those tables to an object
 327     achievements_table = MetaData.tables['achievements']
 328     cd_achievement_table = MetaData.tables['cd_achievement']
 329     cd_game_type_table = MetaData.tables['cd_game_type']
 330     cd_weapon_table = MetaData.tables['cd_weapon']
 331     db_version_table = MetaData.tables['db_version']
 332     games_table = MetaData.tables['games']
 333     hashkeys_table = MetaData.tables['hashkeys']
 334     maps_table = MetaData.tables['maps']
 335     player_game_stats_table = MetaData.tables['player_game_stats']
 336     players_table = MetaData.tables['players']
 337     player_weapon_stats_table = MetaData.tables['player_weapon_stats']
 338     servers_table = MetaData.tables['servers']
 339     player_nicks_table = MetaData.tables['player_nicks']
 340     player_elos_table = MetaData.tables['player_elos']
 341     player_ranks_table = MetaData.tables['player_ranks']
 342
 343     # now map the tables and the objects together
 344     mapper(PlayerAchievement, achievements_table)
 345     mapper(Achievement, cd_achievement_table)
 346     mapper(GameType, cd_game_type_table)
 347     mapper(Weapon, cd_weapon_table)
 348     mapper(Game, games_table)
 349     mapper(Hashkey, hashkeys_table)
 350     mapper(Map, maps_table)
 351     mapper(PlayerGameStat, player_game_stats_table)
 352     mapper(Player, players_table)
 353     mapper(PlayerWeaponStat, player_weapon_stats_table)
 354     mapper(Server, servers_table)
 355     mapper(PlayerNick, player_nicks_table)
 356     mapper(PlayerElo, player_elos_table)
 357     mapper(PlayerRank, player_ranks_table)