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from __future__ import annotations
from dataclasses import dataclass
from datetime import datetime
from enum import Enum
from typing import Protocol
class Player(Enum):
Emma = "Emma"
Kim = "Kim"
Pierre = "Pierre"
Theo = "Théo"
Leila = "Leïla"
Martin = "Martin"
Clementine = "Clémentine"
Thomas = "Thomas"
Baptiste = "Baptiste"
Tanguy = "Tanguy"
Frost = "Frost"
Felix = "Félix"
Axel = "Axel"
@dataclass(frozen=True)
class PlayerStatus:
player: Player
elo: int
total_games: int
@staticmethod
def create(player: Player) -> PlayerStatus:
return PlayerStatus(player=player, elo=1000, total_games=0)
@dataclass(frozen=True)
class Game:
played_at: datetime
scores: dict[Player, int]
def __str__(self) -> str:
total_points = sum(self.scores.values())
return f"Game played at {self.played_at} ({total_points} total points)"
class GameEloChangeStrategy(Protocol):
pass
class Ladder:
strategy: GameEloChangeStrategy
players: dict[Player, PlayerStatus] = {player: PlayerStatus.create(player) for player in Player}
def current_elo(self) -> dict[Player, int]:
return {player: player_status.elo for player, player_status in self.players.items()}
def proccess_game(self, game: Game) -> dict[Player, float]:
players_elo_updates = {player: 0.0 for player in game.scores}
for player_1, score_1 in game.scores.items():
for player_2, score_2 in game.scores.items():
if player_1 != player_2:
expected_score = 1 / (1 + 10 ** ((self.players[player_2].elo - self.players[player_1].elo) / D))
result = (
1.0 if score_1 > score_2 else 0.0 if score_1 < score_2 else 0.5
)
players_elo_updates[player_1] += K * (result - expected_score)
for player, elo_update in players_elo_updates.items():
self.players[player] = PlayerStatus(
player=player,
elo=self.players[player].elo + int(elo_update),
total_games=self.players[player].total_games + 1,
)
return players_elo_updates
def print_current(self):
print(f"Ladder ({datetime.now().strftime('%d/%m/%Y %H:%M')}):")
print("=" * 30)
for rank, player in enumerate(
sorted(self.players.values(), key=lambda player: player.elo, reverse=True)
):
print(
f"{rank+1}.\t{player.player:<20}: {player.elo:>4d} points, {player.total_games:>3d} games"
)
ladder = Ladder()
D = 400
K = 32
games: list[Game] = [
Game(
datetime(2022, 11, 11, 16, 30),
{Player.Theo: 53, Player.Leila: 32, Player.Clementine: 53, Player.Emma: 48, Player.Kim: 50, Player.Martin: 51},
),
Game(
datetime(2022, 11, 11, 17, 0),
{Player.Emma: 53, Player.Kim: 57, Player.Pierre: 48, Player.Theo: 44, Player.Leila: 32, Player.Martin: 57},
),
Game(
datetime(2022, 11, 11, 18, 45),
{Player.Thomas: 58, Player.Baptiste: 45, Player.Pierre: 54, Player.Theo: 65, Player.Emma: 42, Player.Martin: 53},
),
Game(
datetime(2022, 11, 11, 21, 0),
{Player.Kim: 50, Player.Theo: 50, Player.Emma: 53, Player.Clementine: 55, Player.Pierre: 46, Player.Baptiste: 54},
),
Game(
datetime(2022, 11, 11, 21, 30),
{
Player.Kim: 41,
Player.Leila: 32,
Player.Theo: 48,
Player.Emma: 49,
Player.Clementine: 52,
Player.Pierre: 54,
Player.Baptiste: 59,
},
),
Game(
datetime(2022, 11, 11, 22, 0), {Player.Clementine: 47, Player.Pierre: 46, Player.Theo: 57, Player.Emma: 42}
),
Game(
datetime(2022, 11, 11, 22, 32), {Player.Clementine: 43, Player.Pierre: 51, Player.Theo: 40, Player.Emma: 39}
),
Game(
datetime(2022, 11, 12, 12, 48),
{Player.Pierre: 58, Player.Theo: 52, Player.Emma: 59, Player.Thomas: 50, Player.Baptiste: 52},
),
Game(datetime(2022, 11, 12, 13, 18), {Player.Emma: 41, Player.Theo: 53, Player.Pierre: 44}),
Game(datetime(2022, 11, 12, 13, 47), {Player.Emma: 65, Player.Thomas: 59, Player.Pierre: 54}),
Game(
datetime(2022, 11, 12, 14, 15),
{Player.Pierre: 57, Player.Emma: 52, Player.Martin: 45, Player.Clementine: 47},
),
Game(datetime(2022, 11, 12, 14, 47), {Player.Pierre: 51, Player.Emma: 47, Player.Clementine: 56}),
Game(
datetime(2022, 11, 12, 19, 6),
{Player.Clementine: 43, Player.Kim: 47, Player.Theo: 13, Player.Pierre: 47, Player.Emma: 62},
),
Game(
datetime(2022, 11, 13, 12, 31),
{Player.Theo: 43, Player.Thomas: 37, Player.Tanguy: 44, Player.Pierre: 47, Player.Emma: 61},
),
Game(
datetime(2022, 11, 13, 12, 54),
{
Player.Tanguy: 54,
Player.Clementine: 47,
Player.Theo: 65,
Player.Thomas: 44,
Player.Pierre: 60,
Player.Kim: 58,
Player.Emma: 46,
},
),
Game(datetime(2022, 11, 13, 13, 25), {Player.Pierre: 52, Player.Emma: 68, Player.Clementine: 57}),
Game(
datetime(2023, 1, 2, 10, 0),
{Player.Felix: 34, Player.Frost: 64, Player.Thomas: 51, Player.Baptiste: 53, Player.Emma: 68},
),
Game(datetime(2023, 1, 2, 10, 30), {Player.Felix: 64, Player.Frost: 55, Player.Thomas: 62, Player.Emma: 67}),
Game(
datetime(2023, 2, 19, 12, 0),
{Player.Thomas: 56, Player.Axel: 53, Player.Emma: 61, Player.Theo: 57, Player.Pierre: 55, Player.Martin: 36},
),
]
for game in games:
print(game)
print("=" * 30)
players_elo_updates = ladder.proccess_game(game)
for (player, elo_update) in players_elo_updates.items():
print(f"\t{player:<20}{int(elo_update):+}\t({ladder.players[player].elo:>4d})")
ladder.print_current()
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