fix import and some error
This commit is contained in:
+299
-299
@@ -1,299 +1,299 @@
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import copy
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from game_logic.gotypes import Player, Point
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from game_logic.scoring import compute_game_result
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from game_logic import zobrist_hash
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class IllegalMoveError(Exception):
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pass
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# tag::fast_go_strings[]
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class GoString:
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def __init__(self, color, stones, liberties):
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self.color = color
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self.stones = frozenset(stones)
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self.liberties = frozenset(liberties) # <1>
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def without_liberty(self, point): # <2>
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new_liberties = self.liberties - set([point])
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return GoString(self.color, self.stones, new_liberties)
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def with_liberty(self, point):
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new_liberties = self.liberties | set([point])
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return GoString(self.color, self.stones, new_liberties)
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# <1> `stones` and `liberties` are now immutable `frozenset` instances
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# <2> The `without_liberty` methods replaces the previous `remove_liberty` method...
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# <3> ... and `with_liberty` replaces `add_liberty`.
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# end::fast_go_strings[]
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def merged_with(self, string):
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"""Return a new string containing all stones in both strings."""
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assert string.color == self.color
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combined_stones = self.stones | string.stones
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return GoString(
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self.color,
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combined_stones,
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(self.liberties | string.liberties) - combined_stones)
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@property
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def num_liberties(self):
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return len(self.liberties)
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def __eq__(self, other):
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return isinstance(other, GoString) and \
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self.color == other.color and \
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self.stones == other.stones and \
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self.liberties == other.liberties
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def __deepcopy__(self, memodict={}):
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return GoString(self.color, self.stones, copy.deepcopy(self.liberties))
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# tag::init_zobrist[]
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class Board:
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def __init__(self, num_rows, num_cols):
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self.num_rows = num_rows
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self.num_cols = num_cols
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self._grid = {}
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self._hash = zobrist_hash.EMPTY_BOARD
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# end::init_zobrist[]
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def place_stone(self, player, point):
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assert self.is_on_grid(point)
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if self._grid.get(point) is not None:
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print('Illegal play on %s' % str(point))
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assert self._grid.get(point) is None
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# 0. Examine the adjacent points.
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adjacent_same_color = []
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adjacent_opposite_color = []
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liberties = []
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for neighbor in point.neighbors():
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if not self.is_on_grid(neighbor):
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continue
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neighbor_string = self._grid.get(neighbor)
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if neighbor_string is None:
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liberties.append(neighbor)
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elif neighbor_string.color == player:
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if neighbor_string not in adjacent_same_color:
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adjacent_same_color.append(neighbor_string)
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else:
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if neighbor_string not in adjacent_opposite_color:
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adjacent_opposite_color.append(neighbor_string)
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new_string = GoString(player, [point], liberties)
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# tag::apply_zobrist[]
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new_string = GoString(player, [point], liberties) # <1>
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for same_color_string in adjacent_same_color: # <2>
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new_string = new_string.merged_with(same_color_string)
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for new_string_point in new_string.stones:
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self._grid[new_string_point] = new_string
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self._hash ^= zobrist_hash.HASH_CODE[point, player] # <3>
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for other_color_string in adjacent_opposite_color:
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replacement = other_color_string.without_liberty(point) # <4>
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if replacement.num_liberties:
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self._replace_string(other_color_string.without_liberty(point))
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else:
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self._remove_string(other_color_string) # <5>
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# <1> Until this line `place_stone` remains the same.
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# <2> You merge any adjacent strings of the same color.
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# <3> Next, you apply the hash code for this point and player
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# <4> Then you reduce liberties of any adjacent strings of the opposite color.
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# <5> If any opposite color strings now have zero liberties, remove them.
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# end::apply_zobrist[]
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# tag::unapply_zobrist[]
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def _replace_string(self, new_string): # <1>
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for point in new_string.stones:
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self._grid[point] = new_string
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def _remove_string(self, string):
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for point in string.stones:
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for neighbor in point.neighbors(): # <2>
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neighbor_string = self._grid.get(neighbor)
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if neighbor_string is None:
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continue
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if neighbor_string is not string:
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self._replace_string(neighbor_string.with_liberty(point))
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self._grid[point] = None
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self._hash ^= zobrist_hash.HASH_CODE[point, string.color] # <3>
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# <1> This new helper method updates our Go board grid.
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# <2> Removing a string can create liberties for other strings.
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# <3> With Zobrist hashing, you need to unapply the hash for this move.
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# end::unapply_zobrist[]
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def is_on_grid(self, point):
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return 1 <= point.row <= self.num_rows and \
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1 <= point.col <= self.num_cols
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def get(self, point):
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"""Return the content of a point on the board.
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Returns None if the point is empty, or a Player if there is a
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stone on that point.
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"""
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string = self._grid.get(point)
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if string is None:
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return None
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return string.color
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def get_go_string(self, point):
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"""Return the entire string of stones at a point.
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Returns None if the point is empty, or a GoString if there is
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a stone on that point.
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"""
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string = self._grid.get(point)
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if string is None:
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return None
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return string
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def __eq__(self, other):
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return isinstance(other, Board) and \
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self.num_rows == other.num_rows and \
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self.num_cols == other.num_cols and \
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self._hash() == other._hash()
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def __deepcopy__(self, memodict={}):
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copied = Board(self.num_rows, self.num_cols)
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# Can do a shallow copy b/c the dictionary maps tuples
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# (immutable) to GoStrings (also immutable)
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copied._grid = copy.copy(self._grid)
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copied._hash = self._hash
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return copied
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# tag::return_zobrist[]
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def zobrist_hash(self):
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return self._hash
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# end::return_zobrist[]
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class Move:
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"""Any action a player can play on a turn.
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Exactly one of is_play, is_pass, is_resign will be set.
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"""
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def __init__(self, point=None, is_pass=False, is_resign=False):
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assert (point is not None) ^ is_pass ^ is_resign
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self.point = point
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self.is_play = (self.point is not None)
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self.is_pass = is_pass
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self.is_resign = is_resign
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@classmethod
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def play(cls, point):
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"""A move that places a stone on the board."""
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return Move(point=point)
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@classmethod
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def pass_turn(cls):
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return Move(is_pass=True)
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@classmethod
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def resign(cls):
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return Move(is_resign=True)
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def __str__(self):
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if self.is_pass:
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return 'pass'
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if self.is_resign:
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return 'resign'
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return '(r %d, c %d)' % (self.point.row, self.point.col)
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# tag::init_state_zobrist[]
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class GameState:
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def __init__(self, board, next_player, previous, move):
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self.board = board
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self.next_player = next_player
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self.previous_state = previous
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if self.previous_state is None:
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self.previous_states = frozenset()
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else:
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self.previous_states = frozenset(
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previous.previous_states |
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{(previous.next_player, previous.board.zobrist_hash())})
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self.last_move = move
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# end::init_state_zobrist[]
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def apply_move(self, move):
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"""Return the new GameState after applying the move."""
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if move.is_play:
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next_board = copy.deepcopy(self.board)
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next_board.place_stone(self.next_player, move.point)
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else:
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next_board = self.board
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return GameState(next_board, self.next_player.other, self, move)
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@classmethod
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def new_game(cls, board_size):
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if isinstance(board_size, int):
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board_size = (board_size, board_size)
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board = Board(*board_size)
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return GameState(board, Player.black, None, None)
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def is_move_self_capture(self, player, move):
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if not move.is_play:
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return False
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next_board = copy.deepcopy(self.board)
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next_board.place_stone(player, move.point)
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new_string = next_board.get_go_string(move.point)
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return new_string.num_liberties == 0
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@property
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def situation(self):
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return (self.next_player, self.board)
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# tag::ko_zobrist[]
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def does_move_violate_ko(self, player, move):
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if not move.is_play:
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return False
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next_board = copy.deepcopy(self.board)
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next_board.place_stone(player, move.point)
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next_situation = (player.other, next_board.zobrist_hash())
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return next_situation in self.previous_states
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# end::ko_zobrist[]
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def is_valid_move(self, move):
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if self.is_over():
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return False
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if move.is_pass or move.is_resign:
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return True
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return (
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self.board.get(move.point) is None and
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not self.is_move_self_capture(self.next_player, move) and
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not self.does_move_violate_ko(self.next_player, move))
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def is_over(self):
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if self.last_move is None:
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return False
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if self.last_move.is_resign:
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return True
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second_last_move = self.previous_state.last_move
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if second_last_move is None:
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return False
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return self.last_move.is_pass and second_last_move.is_pass
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def legal_moves(self):
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moves = []
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for row in range(1, self.board.num_rows + 1):
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for col in range(1, self.board.num_cols + 1):
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move = Move.play(Point(row, col))
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if self.is_valid_move(move):
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moves.append(move)
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# These two moves are always legal.
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moves.append(Move.pass_turn())
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moves.append(Move.resign())
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return moves
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def winner(self):
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if not self.is_over():
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return None
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if self.last_move.is_resign:
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return self.next_player
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game_result = compute_game_result(self)
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return game_result.winner
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# import copy
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# from tugo.game_logic.gotypes import Player, Point
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# from tugo.game_logic.scoring import compute_game_result
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# from tugo.game_logic import zobrist_hash
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#
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#
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# class IllegalMoveError(Exception):
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# pass
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#
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#
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# # tag::fast_go_strings[]
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# class GoString:
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# def __init__(self, color, stones, liberties):
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# self.color = color
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# self.stones = frozenset(stones)
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# self.liberties = frozenset(liberties) # <1>
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#
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# def without_liberty(self, point): # <2>
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# new_liberties = self.liberties - set([point])
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# return GoString(self.color, self.stones, new_liberties)
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#
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# def with_liberty(self, point):
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# new_liberties = self.liberties | set([point])
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# return GoString(self.color, self.stones, new_liberties)
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# # <1> `stones` and `liberties` are now immutable `frozenset` instances
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# # <2> The `without_liberty` methods replaces the previous `remove_liberty` method...
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# # <3> ... and `with_liberty` replaces `add_liberty`.
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# # end::fast_go_strings[]
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#
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# def merged_with(self, string):
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# """Return a new string containing all stones in both strings."""
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# assert string.color == self.color
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# combined_stones = self.stones | string.stones
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# return GoString(
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# self.color,
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# combined_stones,
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# (self.liberties | string.liberties) - combined_stones)
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#
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# @property
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# def num_liberties(self):
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# return len(self.liberties)
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#
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# def __eq__(self, other):
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# return isinstance(other, GoString) and \
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# self.color == other.color and \
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# self.stones == other.stones and \
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# self.liberties == other.liberties
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#
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# def __deepcopy__(self, memodict={}):
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# return GoString(self.color, self.stones, copy.deepcopy(self.liberties))
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#
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#
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# # tag::init_zobrist[]
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# class Board:
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# def __init__(self, num_rows, num_cols):
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# self.num_rows = num_rows
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# self.num_cols = num_cols
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# self._grid = {}
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# self._hash = zobrist_hash.EMPTY_BOARD
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# # end::init_zobrist[]
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#
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# def place_stone(self, player, point):
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# assert self.is_on_grid(point)
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# if self._grid.get(point) is not None:
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# print('Illegal play on %s' % str(point))
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# assert self._grid.get(point) is None
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# # 0. Examine the adjacent points.
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# adjacent_same_color = []
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# adjacent_opposite_color = []
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# liberties = []
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# for neighbor in point.neighbors():
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# if not self.is_on_grid(neighbor):
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# continue
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# neighbor_string = self._grid.get(neighbor)
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# if neighbor_string is None:
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# liberties.append(neighbor)
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# elif neighbor_string.color == player:
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# if neighbor_string not in adjacent_same_color:
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# adjacent_same_color.append(neighbor_string)
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# else:
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# if neighbor_string not in adjacent_opposite_color:
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# adjacent_opposite_color.append(neighbor_string)
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# new_string = GoString(player, [point], liberties)
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# # tag::apply_zobrist[]
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# new_string = GoString(player, [point], liberties) # <1>
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#
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# for same_color_string in adjacent_same_color: # <2>
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# new_string = new_string.merged_with(same_color_string)
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# for new_string_point in new_string.stones:
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# self._grid[new_string_point] = new_string
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#
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# self._hash ^= zobrist_hash.HASH_CODE[point, player] # <3>
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#
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# for other_color_string in adjacent_opposite_color:
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# replacement = other_color_string.without_liberty(point) # <4>
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# if replacement.num_liberties:
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# self._replace_string(other_color_string.without_liberty(point))
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# else:
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# self._remove_string(other_color_string) # <5>
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# # <1> Until this line `place_stone` remains the same.
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# # <2> You merge any adjacent strings of the same color.
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# # <3> Next, you apply the hash code for this point and player
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# # <4> Then you reduce liberties of any adjacent strings of the opposite color.
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# # <5> If any opposite color strings now have zero liberties, remove them.
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# # end::apply_zobrist[]
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#
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#
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# # tag::unapply_zobrist[]
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# def _replace_string(self, new_string): # <1>
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# for point in new_string.stones:
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# self._grid[point] = new_string
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#
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# def _remove_string(self, string):
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# for point in string.stones:
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# for neighbor in point.neighbors(): # <2>
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# neighbor_string = self._grid.get(neighbor)
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# if neighbor_string is None:
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# continue
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# if neighbor_string is not string:
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# self._replace_string(neighbor_string.with_liberty(point))
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# self._grid[point] = None
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#
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# self._hash ^= zobrist_hash.HASH_CODE[point, string.color] # <3>
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# # <1> This new helper method updates our Go board grid.
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# # <2> Removing a string can create liberties for other strings.
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# # <3> With Zobrist hashing, you need to unapply the hash for this move.
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# # end::unapply_zobrist[]
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#
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# def is_on_grid(self, point):
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# return 1 <= point.row <= self.num_rows and \
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# 1 <= point.col <= self.num_cols
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#
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# def get(self, point):
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# """Return the content of a point on the board.
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#
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# Returns None if the point is empty, or a Player if there is a
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# stone on that point.
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# """
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# string = self._grid.get(point)
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# if string is None:
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# return None
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# return string.color
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#
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# def get_go_string(self, point):
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# """Return the entire string of stones at a point.
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#
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# Returns None if the point is empty, or a GoString if there is
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# a stone on that point.
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# """
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# string = self._grid.get(point)
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# if string is None:
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# return None
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# return string
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#
|
||||
# def __eq__(self, other):
|
||||
# return isinstance(other, Board) and \
|
||||
# self.num_rows == other.num_rows and \
|
||||
# self.num_cols == other.num_cols and \
|
||||
# self._hash() == other._hash()
|
||||
#
|
||||
# def __deepcopy__(self, memodict={}):
|
||||
# copied = Board(self.num_rows, self.num_cols)
|
||||
# # Can do a shallow copy b/c the dictionary maps tuples
|
||||
# # (immutable) to GoStrings (also immutable)
|
||||
# copied._grid = copy.copy(self._grid)
|
||||
# copied._hash = self._hash
|
||||
# return copied
|
||||
#
|
||||
# # tag::return_zobrist[]
|
||||
# def zobrist_hash(self):
|
||||
# return self._hash
|
||||
# # end::return_zobrist[]
|
||||
#
|
||||
#
|
||||
# class Move:
|
||||
# """Any action a player can play on a turn.
|
||||
# Exactly one of is_play, is_pass, is_resign will be set.
|
||||
# """
|
||||
# def __init__(self, point=None, is_pass=False, is_resign=False):
|
||||
# assert (point is not None) ^ is_pass ^ is_resign
|
||||
# self.point = point
|
||||
# self.is_play = (self.point is not None)
|
||||
# self.is_pass = is_pass
|
||||
# self.is_resign = is_resign
|
||||
#
|
||||
# @classmethod
|
||||
# def play(cls, point):
|
||||
# """A move that places a stone on the board."""
|
||||
# return Move(point=point)
|
||||
#
|
||||
# @classmethod
|
||||
# def pass_turn(cls):
|
||||
# return Move(is_pass=True)
|
||||
#
|
||||
# @classmethod
|
||||
# def resign(cls):
|
||||
# return Move(is_resign=True)
|
||||
#
|
||||
# def __str__(self):
|
||||
# if self.is_pass:
|
||||
# return 'pass'
|
||||
# if self.is_resign:
|
||||
# return 'resign'
|
||||
# return '(r %d, c %d)' % (self.point.row, self.point.col)
|
||||
#
|
||||
#
|
||||
# # tag::init_state_zobrist[]
|
||||
# class GameState:
|
||||
# def __init__(self, board, next_player, previous, move):
|
||||
# self.board = board
|
||||
# self.next_player = next_player
|
||||
# self.previous_state = previous
|
||||
# if self.previous_state is None:
|
||||
# self.previous_states = frozenset()
|
||||
# else:
|
||||
# self.previous_states = frozenset(
|
||||
# previous.previous_states |
|
||||
# {(previous.next_player, previous.board.zobrist_hash())})
|
||||
# self.last_move = move
|
||||
# # end::init_state_zobrist[]
|
||||
#
|
||||
# def apply_move(self, move):
|
||||
# """Return the new GameState after applying the move."""
|
||||
# if move.is_play:
|
||||
# next_board = copy.deepcopy(self.board)
|
||||
# next_board.place_stone(self.next_player, move.point)
|
||||
# else:
|
||||
# next_board = self.board
|
||||
# return GameState(next_board, self.next_player.other, self, move)
|
||||
#
|
||||
# @classmethod
|
||||
# def new_game(cls, board_size):
|
||||
# if isinstance(board_size, int):
|
||||
# board_size = (board_size, board_size)
|
||||
# board = Board(*board_size)
|
||||
# return GameState(board, Player.black, None, None)
|
||||
#
|
||||
# def is_move_self_capture(self, player, move):
|
||||
# if not move.is_play:
|
||||
# return False
|
||||
# next_board = copy.deepcopy(self.board)
|
||||
# next_board.place_stone(player, move.point)
|
||||
# new_string = next_board.get_go_string(move.point)
|
||||
# return new_string.num_liberties == 0
|
||||
#
|
||||
# @property
|
||||
# def situation(self):
|
||||
# return (self.next_player, self.board)
|
||||
#
|
||||
# # tag::ko_zobrist[]
|
||||
# def does_move_violate_ko(self, player, move):
|
||||
# if not move.is_play:
|
||||
# return False
|
||||
# next_board = copy.deepcopy(self.board)
|
||||
# next_board.place_stone(player, move.point)
|
||||
# next_situation = (player.other, next_board.zobrist_hash())
|
||||
# return next_situation in self.previous_states
|
||||
# # end::ko_zobrist[]
|
||||
#
|
||||
# def is_valid_move(self, move):
|
||||
# if self.is_over():
|
||||
# return False
|
||||
# if move.is_pass or move.is_resign:
|
||||
# return True
|
||||
# return (
|
||||
# self.board.get(move.point) is None and
|
||||
# not self.is_move_self_capture(self.next_player, move) and
|
||||
# not self.does_move_violate_ko(self.next_player, move))
|
||||
#
|
||||
# def is_over(self):
|
||||
# if self.last_move is None:
|
||||
# return False
|
||||
# if self.last_move.is_resign:
|
||||
# return True
|
||||
# second_last_move = self.previous_state.last_move
|
||||
# if second_last_move is None:
|
||||
# return False
|
||||
# return self.last_move.is_pass and second_last_move.is_pass
|
||||
#
|
||||
# def legal_moves(self):
|
||||
# moves = []
|
||||
# for row in range(1, self.board.num_rows + 1):
|
||||
# for col in range(1, self.board.num_cols + 1):
|
||||
# move = Move.play(Point(row, col))
|
||||
# if self.is_valid_move(move):
|
||||
# moves.append(move)
|
||||
# # These two moves are always legal.
|
||||
# moves.append(Move.pass_turn())
|
||||
# moves.append(Move.resign())
|
||||
#
|
||||
# return moves
|
||||
#
|
||||
# def winner(self):
|
||||
# if not self.is_over():
|
||||
# return None
|
||||
# if self.last_move.is_resign:
|
||||
# return self.next_player
|
||||
# game_result = compute_game_result(self)
|
||||
# return game_result.winner
|
||||
|
||||
@@ -1,7 +1,7 @@
|
||||
import copy
|
||||
from game_logic.gotypes import Player, Point
|
||||
from game_logic.scoring import compute_game_result
|
||||
from game_logic import zobrist_hash
|
||||
from tugo.game_logic.gotypes import Player, Point
|
||||
from tugo.game_logic.scoring import compute_game_result
|
||||
from tugo.game_logic import zobrist_hash
|
||||
from tugo.print_utils import MoveAge
|
||||
|
||||
neighbor_tables = {}
|
||||
|
||||
@@ -2,7 +2,7 @@
|
||||
from __future__ import absolute_import
|
||||
from collections import namedtuple
|
||||
|
||||
from game_logic.gotypes import Player, Point
|
||||
from tugo.game_logic.gotypes import Player, Point
|
||||
|
||||
|
||||
|
||||
|
||||
@@ -1,4 +1,4 @@
|
||||
from game_logic.gotypes import Player, Point
|
||||
from tugo.game_logic.gotypes import Player, Point
|
||||
|
||||
|
||||
HASH_CODE = {
|
||||
|
||||
Reference in New Issue
Block a user