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
  40 class GameType(object):
  41     def __repr__(self):
  42         return "<GameType(%s, %s, %s)>" % (self.game_type_cd, self.descr, self.active_ind)
  43
  44
  45 class Weapon(object):
  46     def __repr__(self):
  47         return "<Weapon(%s, %s, %s)>" % (self.weapon_cd, self.descr, self.active_ind)
  48
  49
  50 class Server(object):
  51     def __init__(self, name=None, hashkey=None, ip_addr=None):
  52         self.name = name
  53         self.hashkey = hashkey
  54         self.ip_addr = ip_addr
  55
  56     def __repr__(self):
  57         return "<Server(%s, %s)>" % (self.server_id, self.name.encode('utf-8'))
  58
  59
  60 class Map(object):
  61     def __init__(self, name=None):
  62         self.name = name
  63
  64     def __repr__(self):
  65         return "<Map(%s, %s, %s)>" % (self.map_id, self.name, self.version)
  66
  67     def to_dict(self):
  68         return {'map_id':self.map_id, 'name':self.name}
  69
  70
  71 class Game(object):
  72     def __init__(self, game_id=None, start_dt=None, game_type_cd=None,
  73             server_id=None, map_id=None, winner=None):
  74         self.game_id = game_id
  75         self.start_dt = start_dt
  76         self.game_type_cd = game_type_cd
  77         self.server_id = server_id
  78         self.map_id = map_id
  79         self.winner = winner
  80
  81     def __repr__(self):
  82         return "<Game(%s, %s, %s, %s)>" % (self.game_id, self.start_dt, self.game_type_cd, self.server_id)
  83
  84     def fuzzy_date(self):
  85         return pretty_date(self.start_dt)
  86
  87     def process_elos(self, session, game_type_cd=None):
  88         if game_type_cd is None:
  89             game_type_cd = self.game_type_cd
  90
  91         # we do not have the actual duration of the game, so use the
  92         # maximum alivetime of the players instead
  93         duration = 0
  94         for d in session.query(sfunc.max(PlayerGameStat.alivetime)).\
  95                     filter(PlayerGameStat.game_id==self.game_id).\
  96                     one():
  97             duration = d.seconds
  98
  99         scores = {}
 100         alivetimes = {}
 101         for (p,s,a) in session.query(PlayerGameStat.player_id,
 102                 PlayerGameStat.score, PlayerGameStat.alivetime).\
 103                 filter(PlayerGameStat.game_id==self.game_id).\
 104                 filter(PlayerGameStat.alivetime > timedelta(seconds=0)).\
 105                 filter(PlayerGameStat.player_id > 2).\
 106                 all():
 107                     # scores are per second
 108                     scores[p] = s/float(a.seconds)
 109                     alivetimes[p] = a.seconds
 110
 111         player_ids = scores.keys()
 112
 113         elos = {}
 114         for e in session.query(PlayerElo).\
 115                 filter(PlayerElo.player_id.in_(player_ids)).\
 116                 filter(PlayerElo.game_type_cd==game_type_cd).all():
 117                     elos[e.player_id] = e
 118
 119         # ensure that all player_ids have an elo record
 120         for pid in player_ids:
 121             if pid not in elos.keys():
 122                 elos[pid] = PlayerElo(pid, game_type_cd)
 123
 124         for pid in player_ids:
 125             elos[pid].k = KREDUCTION.eval(elos[pid].games, alivetimes[pid],
 126                     duration)
 127             if elos[pid].k == 0:
 128                 del(elos[pid])
 129                 del(scores[pid])
 130                 del(alivetimes[pid])
 131
 132         elos = self.update_elos(elos, scores, ELOPARMS)
 133
 134         # add the elos to the session for committing
 135         for e in elos:
 136             session.add(elos[e])
 137
 138         if game_type_cd == 'duel':
 139             self.process_elos(session, "dm")
 140
 141     def update_elos(self, elos, scores, ep):
 142         eloadjust = {}
 143         for pid in elos.keys():
 144             eloadjust[pid] = 0
 145
 146         if len(elos) < 2:
 147             return elos
 148
 149         pids = elos.keys()
 150
 151         for i in xrange(0, len(pids)):
 152             ei = elos[pids[i]]
 153             for j in xrange(i+1, len(pids)):
 154                 ej = elos[pids[j]]
 155                 si = scores[ei.player_id]
 156                 sj = scores[ej.player_id]
 157
 158                 # normalize scores
 159                 ofs = min(0, si, sj)
 160                 si -= ofs
 161                 sj -= ofs
 162                 if si + sj == 0:
 163                     si, sj = 1, 1 # a draw
 164
 165                 # real score factor
 166                 scorefactor_real = si / float(si + sj)
 167
 168                 # estimated score factor by elo
 169                 elodiff = min(ep.maxlogdistance, max(-ep.maxlogdistance,
 170                     (float(ei.elo) - float(ej.elo)) * ep.logdistancefactor))
 171                 scorefactor_elo = 1 / (1 + math.exp(-elodiff))
 172
 173                 # how much adjustment is good?
 174                 # scorefactor(elodiff) = 1 / (1 + e^(-elodiff * logdistancefactor))
 175                 # elodiff(scorefactor) = -ln(1/scorefactor - 1) / logdistancefactor
 176                 # elodiff'(scorefactor) = 1 / ((scorefactor) (1 - scorefactor) logdistancefactor)
 177                 # elodiff'(scorefactor) >= 4 / logdistancefactor
 178
 179                 # adjust'(scorefactor) = K1 + K2
 180
 181                 # so we want:
 182                 # K1 + K2 <= 4 / logdistancefactor <= elodiff'(scorefactor)
 183                 # as we then don't overcompensate
 184
 185                 adjustment = scorefactor_real - scorefactor_elo
 186                 eloadjust[ei.player_id] += adjustment
 187                 eloadjust[ej.player_id] -= adjustment
 188         for pid in pids:
 189             elos[pid].elo = max(float(elos[pid].elo) + eloadjust[pid] * elos[pid].k * ep.global_K / float(len(elos) - 1), ep.floor)
 190             elos[pid].games += 1
 191         return elos
 192
 193
 194 class PlayerGameStat(object):
 195     def __init__(self, player_game_stat_id=None, create_dt=None):
 196         self.player_game_stat_id = player_game_stat_id
 197         self.create_dt = create_dt
 198
 199     def __repr__(self):
 200         return "<PlayerGameStat(%s, %s, %s)>" % (self.player_id, self.game_id, self.create_dt)
 201
 202     def nick_stripped(self):
 203         if self.nick is None:
 204             return "Anonymous Player"
 205         else:
 206             return strip_colors(self.nick)
 207
 208     def nick_html_colors(self):
 209         if self.nick is None:
 210             return "Anonymous Player"
 211         else:
 212             return html_colors(self.nick)
 213
 214     def team_html_color(self):
 215         # blue
 216         if self.team == 5:
 217             return "red"
 218         # red
 219         if self.team == 14:
 220             return "blue"
 221         if self.team == 13:
 222             return "yellow"
 223         if self.team == 10:
 224             return "pink"
 225
 226
 227 class Achievement(object):
 228     def __repr__(self):
 229         return "<Achievement(%s, %s, %s)>" % (self.achievement_cd, self.descr, self.limit)
 230
 231
 232 class PlayerAchievement(object):
 233     def __repr__(self):
 234         return "<PlayerAchievement(%s, %s)>" % (self.player_id, self.achievement_cd)
 235
 236
 237 class PlayerWeaponStat(object):
 238     def __repr__(self):
 239         return "<PlayerWeaponStat(%s, %s, %s)>" % (self.player_weapon_stats_id, self.player_id, self.game_id)
 240
 241
 242 class Hashkey(object):
 243     def __init__(self, player_id=None, hashkey=None):
 244         self.player_id = player_id
 245         self.hashkey = hashkey
 246
 247     def __repr__(self):
 248         return "<Hashkey(%s, %s)>" % (self.player_id, self.hashkey)
 249
 250
 251 class PlayerNick(object):
 252     def __repr__(self):
 253         return "<PlayerNick(%s, %s)>" % (self.player_id, self.stripped_nick)
 254
 255
 256 class PlayerElo(object):
 257     def __init__(self, player_id=None, game_type_cd=None):
 258
 259         self.player_id = player_id
 260         self.game_type_cd = game_type_cd
 261         self.score = 0
 262         self.games = 0
 263         self.elo = ELOPARMS.initial
 264
 265     def __repr__(self):
 266         return "<PlayerElo(pid=%s, gametype=%s, elo=%s)>" % (self.player_id, self.game_type_cd, self.elo)
 267
 268
 269 class PlayerRank(object):
 270
 271     def nick_html_colors(self):
 272         if self.nick is None:
 273             return "Anonymous Player"
 274         else:
 275             return html_colors(self.nick)
 276
 277
 278     def __repr__(self):
 279         return "<PlayerRank(pid=%s, gametype=%s, rank=%s)>" % (self.player_id, self.game_type_cd, self.rank)
 280
 281
 282 def initialize_db(engine=None):
 283     DBSession.configure(bind=engine)
 284     Base.metadata.bind = engine
 285     Base.metadata.create_all(engine)
 286     MetaData = sqlalchemy.MetaData(bind=engine, reflect=True)
 287
 288     # assign all those tables to an object
 289     achievements_table = MetaData.tables['achievements']
 290     cd_achievement_table = MetaData.tables['cd_achievement']
 291     cd_game_type_table = MetaData.tables['cd_game_type']
 292     cd_weapon_table = MetaData.tables['cd_weapon']
 293     db_version_table = MetaData.tables['db_version']
 294     games_table = MetaData.tables['games']
 295     hashkeys_table = MetaData.tables['hashkeys']
 296     maps_table = MetaData.tables['maps']
 297     player_game_stats_table = MetaData.tables['player_game_stats']
 298     players_table = MetaData.tables['players']
 299     player_weapon_stats_table = MetaData.tables['player_weapon_stats']
 300     servers_table = MetaData.tables['servers']
 301     player_nicks_table = MetaData.tables['player_nicks']
 302     player_elos_table = MetaData.tables['player_elos']
 303     player_ranks_table = MetaData.tables['player_ranks']
 304
 305     # now map the tables and the objects together
 306     mapper(PlayerAchievement, achievements_table)
 307     mapper(Achievement, cd_achievement_table)
 308     mapper(GameType, cd_game_type_table)
 309     mapper(Weapon, cd_weapon_table)
 310     mapper(Game, games_table)
 311     mapper(Hashkey, hashkeys_table)
 312     mapper(Map, maps_table)
 313     mapper(PlayerGameStat, player_game_stats_table)
 314     mapper(Player, players_table)
 315     mapper(PlayerWeaponStat, player_weapon_stats_table)
 316     mapper(Server, servers_table)
 317     mapper(PlayerNick, player_nicks_table)
 318     mapper(PlayerElo, player_elos_table)
 319     mapper(PlayerRank, player_ranks_table)