def evaluate(self, state: TwoPlayerGameState) -> float:
if not isinstance(state.game, Reversi):
return 0
if isinstance(state.board, dict):
board = state.board
else:
board = reversi.from_array_to_dictionary_board(state.board)
game = state.game
corners = [board.get((1, 1)), board.get((1, game.height)), board.get((game.width, 1)),
board.get((game.width, game.height))]
x_squares = [board.get((2, 2)), board.get((2, game.height - 1)), board.get((game.width - 1, 2)),
board.get((game.width - 1, game.height - 1))]
corner_diff = 0
for i in range(4):
if corners[i] == game.player1.label:
corner_diff += 4
elif corners[i] == game.player2.label:
corner_diff -= 4
else:
if x_squares[i] == game.player1.label:
corner_diff -= 1
elif x_squares[i] == game.player2.label:
corner_diff += 1
mobility = len(game._get_valid_moves(board, state.player2.label)) # Opponent's mobility
result = 4 * corner_diff - mobility
if state.is_player_max(state.player1):
return result
elif state.is_player_max(state.player2):
return - result
else:
raise ValueError('Player MAX not defined')
"""
initial_player = player_a # Player who moves first.
# Board at an intermediate state of the game.
initial_board = None
# NOTE Uncoment to use standard initial board.
# initial_board = None # Standard initial board.
if initial_board is None:
height, width = 8, 8
else:
height = len(initial_board)
width = len(initial_board[0])
try:
initial_board = from_array_to_dictionary_board(initial_board)
except ValueError:
raise ValueError('Wrong configuration of the board')
else:
print("Successfully initialised board from array")
# Initialize a reversi game.
game = Reversi(
player1=player_a,
player2=player_b,
height=height,
width=width,
)
# Initialize a game state.
game_state = TwoPlayerGameState(
def evaluate(self, state: TwoPlayerGameState) -> float:
if isinstance(state.board, dict):
board = state.board
else:
board = reversi.from_array_to_dictionary_board(state.board)
count = 0
# Inferior edge
c = board.get((1, 1))
ini = c
if c is None:
count -= get_sign(board.get((2, 2)), state) * 2
else:
count += get_sign(c, state) * 4
inc, nxt_streak, n_streak = edge(board, state, c, 1, False, False)
count += inc
# Right edge
c = board.get((8, 1))
if c is not None and c == nxt_streak:
count += get_sign(c, state) * n_streak * 3
if c is None:
count -= get_sign(board.get((7, 2)), state) * 2
else:
count += get_sign(c, state) * 4
inc, nxt_streak, n_streak = edge(board, state, c, 8, False, True)
count += inc
# Superior edge
c = board.get((8, 8))
if c is not None and c == nxt_streak:
count += get_sign(c, state) * n_streak * 3
if c is None:
count -= get_sign(board.get((7, 7)), state) * 2
else:
count += get_sign(c, state) * 4
inc, nxt_streak, n_streak = edge(board, state, c, 8, True, False)
count += inc
# Left edge
c = board.get((1, 8))
if c is not None and c == nxt_streak:
count += get_sign(c, state) * n_streak * 3
if c is None:
count -= get_sign(board.get((2, 7)), state) * 2
else:
count += get_sign(c, state) * 4
inc, nxt_streak, n_streak = edge(board, state, c, 1, True, True)
count += inc
if nxt_streak is not None and nxt_streak == ini:
count += get_sign(c, state) * n_streak * 3
if state.is_player_max(state.player1):
return count
elif state.is_player_max(state.player2):
return -count
else:
raise ValueError('Player MAX not defined')
def evaluate(self, state: TwoPlayerGameState) -> float:
if isinstance(state.board, dict):
board = state.board
else:
board = reversi.from_array_to_dictionary_board(state.board)
count = 0
# Inferior edge
n_streak = 0
nxt_streak = None
c = board.get((1, 1))
ini = c
if c is None:
count -= get_sign(board.get((2, 2)), state) * 2
cur_streak = None
else:
count += get_sign(c, state) * 4
cur_streak = c
for i in range(2, 8):
c = board.get((i, 1))
count += get_sign(c, state)
if c == cur_streak and c is not None:
n_streak += 1
else:
if cur_streak is not None:
count += get_sign(cur_streak, state) * n_streak * 3
cur_streak = None
if cur_streak is None:
if c == nxt_streak and c is not None:
n_streak += 1
else:
nxt_streak = c
n_streak = 1
if cur_streak is not None:
count += get_sign(c, state) * n_streak * 3
# Right edge
c = board.get((8, 1))
if c is not None and c == nxt_streak:
count += get_sign(c, state) * n_streak * 3
cur_streak = c
nxt_streak = None
n_streak = 0
if c is None:
count -= get_sign(board.get((7, 2)), state) * 2
else:
count += get_sign(c, state) * 4
for i in range(2, 8):
c = board.get((8, i))
count += get_sign(c, state)
if c == cur_streak and c is not None:
n_streak += 1
else:
if cur_streak is not None:
count += get_sign(cur_streak, state) * n_streak * 3
cur_streak = None
if cur_streak is None:
if c == nxt_streak and c is not None:
n_streak += 1
else:
nxt_streak = c
n_streak = 1
if cur_streak is not None:
count += get_sign(c, state) * n_streak * 3
# Superior edge
c = board.get((8, 8))
if c is not None and c == nxt_streak:
count += get_sign(c, state) * n_streak * 3
cur_streak = c
nxt_streak = None
n_streak = 0
if c is None:
count -= get_sign(board.get((7, 7)), state) * 2
else:
count += get_sign(c, state) * 4
for i in range(1, 7):
c = board.get((8 - i, 8))
count += get_sign(c, state)
if c == cur_streak and c is not None:
n_streak += 1
else:
if cur_streak is not None:
count += get_sign(cur_streak, state) * n_streak * 3
cur_streak = None
if cur_streak is None:
if c == nxt_streak and c is not None:
n_streak += 1
else:
nxt_streak = c
n_streak = 1
if cur_streak is not None:
count += get_sign(c, state) * n_streak * 3
# Left edge
c = board.get((1, 8))
if c is not None and c == nxt_streak:
count += get_sign(c, state) * n_streak * 3
cur_streak = c
nxt_streak = None
n_streak = 0
if c is None:
count -= get_sign(board.get((2, 7)), state) * 2
else:
count += get_sign(c, state) * 4
for i in range(1, 7):
c = board.get((1, 8 - i))
count += get_sign(c, state)
if c == cur_streak and c is not None:
n_streak += 1
else:
if cur_streak is not None:
count += get_sign(cur_streak, state) * n_streak * 3
cur_streak = None
if cur_streak is None:
if c == nxt_streak and c is not None:
n_streak += 1
else:
nxt_streak = c
n_streak = 1
if cur_streak is not None:
count += get_sign(c, state) * n_streak * 3
if nxt_streak is not None and nxt_streak == ini:
count += get_sign(c, state) * n_streak * 3
if state.is_player_max(state.player1):
return count
elif state.is_player_max(state.player2):
return - count
else:
raise ValueError('Player MAX not defined')