73 lines
2.1 KiB
Python
73 lines
2.1 KiB
Python
import multiprocessing as mp
|
|
import random
|
|
import chess
|
|
import chess.pgn
|
|
from typing import Tuple, List
|
|
from enum import Enum
|
|
from dataclasses import dataclass
|
|
|
|
from engine import Engine
|
|
|
|
|
|
class Winner(Enum):
|
|
Engine_A = 0
|
|
Engine_B = 1
|
|
Draw = 2
|
|
|
|
|
|
@dataclass
|
|
class EvaluationResult:
|
|
winner: Winner
|
|
game: chess.pgn.Game
|
|
|
|
|
|
def simulate_game(white: Engine, black: Engine) -> chess.pgn.Game:
|
|
board = chess.Board()
|
|
|
|
is_white_playing = True
|
|
while not board.is_game_over():
|
|
play_result = white.play(board) if is_white_playing else black.play(board)
|
|
board.push(play_result.move)
|
|
is_white_playing = not is_white_playing
|
|
|
|
game = chess.pgn.Game.from_board(board)
|
|
game.headers['White'] = white.get_name()
|
|
game.headers['Black'] = black.get_name()
|
|
return game
|
|
|
|
|
|
class Evaluation:
|
|
def __init__(self, engine_a: Engine.__class__, engine_b: Engine.__class__):
|
|
self.engine_a = engine_a
|
|
self.engine_b = engine_b
|
|
|
|
def run(self, n_games=100) -> List[EvaluationResult]:
|
|
with mp.Pool(mp.cpu_count()) as pool:
|
|
args = [(self.engine_a, self.engine_b) for i in range(n_games)]
|
|
return pool.map(Evaluation._test_simulate, args)
|
|
|
|
@staticmethod
|
|
def _test_simulate(arg: Tuple[Engine.__class__, Engine.__class__]) -> EvaluationResult:
|
|
engine_a, engine_b = arg
|
|
flip_engines = bool(random.getrandbits(1))
|
|
if flip_engines:
|
|
black, white = engine_a(chess.BLACK), engine_b(chess.WHITE)
|
|
else:
|
|
white, black = engine_a(chess.WHITE), engine_b(chess.BLACK)
|
|
|
|
game = simulate_game(white, black)
|
|
winner = game.end().board().outcome().winner
|
|
|
|
result = Winner.Draw
|
|
match (winner, flip_engines):
|
|
case (chess.WHITE, True):
|
|
result = Winner.Engine_B
|
|
case (chess.BLACK, True):
|
|
result = Winner.Engine_A
|
|
case (chess.WHITE, False):
|
|
result = Winner.Engine_A
|
|
case (chess.BLACK, False):
|
|
result = Winner.Engine_B
|
|
|
|
return EvaluationResult(result, game)
|