def DoPost(self):
game = Game.get_by_id(long(self.request.get('game_id')))
if not (game.player_1.key() == self.player.key()
or game.player_2.key() == self.player.key()):
raise Exception(
"You can't complete a game you don't own, duderino!")
if game.completed_date != None:
raise Exception(
"You can't complete a game that's already been completed, duderino!"
)
player_1_won = bool(self.request.get('player_1_won'))
player_2_won = bool(self.request.get('player_2_won'))
if not player_1_won ^ player_2_won:
raise "One player, and only one player, can win a game."
game.completed_date = datetime.now()
if player_1_won:
game.winner = game.player_1
else:
game.winner = game.player_2
update_ranks(game)
game.player_1.put()
game.player_2.put()
game.put()
logging.info("Player %s completed game %s" % (self.player, game))
self.redirect_to_redirect_path_or_home()
def DoPost(self):
game = Game.get_by_id(long(self.request.get('game_id')))
if not (game.player_1.key() == self.player.key() or
game.player_2.key() == self.player.key()):
raise Exception("You can't complete a game you don't own, duderino!")
if game.completed_date != None:
raise Exception("You can't complete a game that's already been completed, duderino!")
player_1_won = bool(self.request.get('player_1_won'))
player_2_won = bool(self.request.get('player_2_won'))
if not player_1_won ^ player_2_won:
raise "One player, and only one player, can win a game."
game.completed_date = datetime.now()
if player_1_won:
game.winner = game.player_1
else:
game.winner = game.player_2
update_ranks(game)
game.player_1.put()
game.player_2.put()
game.put()
logging.info("Player %s completed game %s" % (self.player, game))
self.redirect_to_redirect_path_or_home()
def test_rank_using_wikipedia_example(self):
player = mock_player(1613)
elo.update_ranks(game(player, mock_player(1609), False))
elo.update_ranks(game(player, mock_player(1388), True))
elo.update_ranks(game(player, mock_player(1586), True))
elo.update_ranks(game(player, mock_player(1720), False))
# 1613 + 32 * (2 - 2.181), almost
self.assertAlmostEquals(1608, player.rank, 0)
def test_rank_using_wikipedia_example(self):
player = mock_player(1613)
elo.update_ranks(game(player, mock_player(1609), False))
elo.update_ranks(game(player, mock_player(1388), True))
elo.update_ranks(game(player, mock_player(1586), True))
elo.update_ranks(game(player, mock_player(1720), False))
# 1613 + 32 * (2 - 2.181), almost
self.assertAlmostEquals(1608, player.rank, 0)
def DoGet(self):
logging.info('Calculating ELO rankings')
# Reset ranks
for player in Player.all():
player.rank = elo.INITIAL_RANK
player.put()
# Calculate ranks for games in ascending order, since the order matters for ELO
for game in Game.all_completed_asc():
logging.info('Updating rankings based on game completed at %s: %s' % (game.completed_date, game))
elo.update_ranks(game)
game.player_1.put()
game.player_2.put()
self.render_to_response("calculate_elo_rankings.html")
def test_example_2(self):
# example 2 from http://www.chesselo.com/, except using K=32
player = mock_player(2000)
elo.update_ranks(game(player, mock_player(1900), False))
# 2000 + 32 * (0 - 0.64)
self.assertAlmostEquals(1980, player.rank, 0)
def test_example_2(self):
# example 2 from http://www.chesselo.com/, except using K=32
player = mock_player(2000)
elo.update_ranks(game(player, mock_player(1900), False))
# 2000 + 32 * (0 - 0.64)
self.assertAlmostEquals(1980, player.rank, 0)
