class GameState:
def __init__(self):
self.deck = Deck()
self.board = Board()
self.player_dictionary = {}
self.rule_checker = RuleChecker()
self.dead_players = []
#################### Public methods ###################################
# checks if an initial tile placement is legal
# tile_index -> int : 0 - 34 (represents the index in all_tiles)
# rotation -> int : 0, 90, 180, 270 (represents the number of roations for the given tile)
# boar_coordinate -> string : valid_cooridinate() (coordinate the tile is placed at)
# starting_port -> string : valid_port() (port on the edge of the board the player starts at)
def initial_placement_check(self, tile_index, rotation, board_coordinate,
starting_port):
tile = self.deck.get_tile(tile_index)
number_of_rotations = get_number_of_rotations(rotation)
tile.rotate(number_of_rotations)
return self.rule_checker.check_first_turn(self.board, tile,
board_coordinate,
starting_port)
# performs a players first turn, returns the validity of that turn (if not valid kills player)
# player_color -> string : valid_color() (the color of the player making the turn)
# tile_index -> int : 0 - 34 (represents the index in all_tiles)
# rotation -> int : 0, 90, 180, 270 (represents the number of roations for the given tile)
# boar_coordinate -> string : valid_cooridinate() (coordinate the tile is placed at)
# starting_port -> string : valid_port() (port on the edge of the board the player starts at)
def player_first_turn(self, player_color, tile_index, rotation,
board_coordinate, starting_port):
new_player = Avatar(player_color)
self.player_dictionary[player_color] = new_player
first_turn_rule_check = self.initial_placement_check(
tile_index, rotation, board_coordinate, starting_port)
if first_turn_rule_check[LEGAL]:
tile = self.deck.get_tile(tile_index)
number_of_rotations = get_number_of_rotations(rotation)
tile.rotate(number_of_rotations)
self.board.first_turn(new_player, tile, board_coordinate,
starting_port)
else:
self.dead_players.append(player_color)
return first_turn_rule_check
# checks if an players turn is legal
# player_color -> string : valid_color() (the color of the player making the turn)
# tile_index -> int : 0 - 34 (represents the index in all_tiles)
# rotation -> int : 0 - 3 (represents the number of roations for the given tile)
# boar_coordinate -> string : valid_cooridinate() (coordinate the tile is placed at)
# tile_choices -> array[int] : 2 - 3 (tile options the player had to choose from)
def rule_check(self, player_color, tile_index, rotation, board_coordinate,
tile_choices):
player = self.player_dictionary[player_color]
players_tiles = self.deck.get_tiles(tile_choices)
player.tiles = players_tiles
tile = self.deck.get_tile(tile_index)
number_of_rotations = get_number_of_rotations(rotation)
tile.rotate(number_of_rotations)
return self.rule_checker.check_turn(self.board, tile, board_coordinate,
player)
# performs a players turn, returns the result or validity of that turn (if not valid kills player)
# player_color -> string : valid_color() (the color of the player making the turn)
# tile_index -> int : 0 - 34 (represents the index in all_tiles)
# rotation -> int : 0 - 3 (represents the number of roations for the given tile)
# boar_coordinate -> string : valid_cooridinate() (coordinate the tile is placed at)
# tile_choices -> array[int] : 2 - 3 (tile options the player had to choose from)
def player_take_turn(self, player_color, tile_index, rotation,
board_coordinate, tile_choices):
rule_check = self.rule_check(player_color, tile_index, rotation,
board_coordinate, tile_choices)
if rule_check[LEGAL]:
player = self.player_dictionary[player_color]
tile = self.deck.get_tile(tile_index)
number_of_rotations = get_number_of_rotations(rotation)
tile.rotate(number_of_rotations)
self.board.take_turn(tile, board_coordinate, player)
players_killed = self.update_other_players_positions(
player, board_coordinate)
result = self.get_turn_results(players_killed)
self.dead_players.extend(players_killed)
return result
else:
self.dead_players.append(player_color)
return rule_check
#################### Private methods #######################
# returns a set of the remaining living player colors
def get_living_players(self):
players_set = set(self.player_dictionary.keys())
dead_players_set = set(self.dead_players)
living_players_set = players_set.difference(dead_players_set)
return living_players_set
# given a list of player colors move those players
# expectation that these players are all moveable otherwise
# throws an exception
def move_players(self, players_to_move):
for player_color in players_to_move:
player = self.player_dictionary[player_color]
self.board.move_player(player)
# updates the positions of the other players still on the board
# given the current player and where they placed the tile on their turn
# returns the players killed in this turn
def update_other_players_positions(self, current_player, board_coordinate):
players_killed = []
if current_player.is_player_dead():
players_killed.append(current_player.color)
living_players = self.get_living_players()
living_players.discard(current_player.color)
players_to_move = []
for player_color in living_players:
player = self.player_dictionary[player_color]
if player.get_connecting_coordinate() == board_coordinate:
players_to_move.append(player.color)
self.move_players(players_to_move)
for player_color in players_to_move:
if self.player_dictionary[player_color].is_player_dead():
players_killed.append(player_color)
return players_killed
# given the players killed during a turn return the results of a legal move
def get_turn_results(self, players_killed):
result = {LEGAL: True, PLAYERS_KILLED: [], GAME_OVER: False}
is_game_over = len(self.player_dictionary) - len(self.dead_players) < 2
is_tie = len(self.player_dictionary) == len(self.dead_players)
if is_game_over:
result[GAME_OVER] = True
if is_tie:
result[WINNERS] = players_killed
result[LOSERS] = self.dead_players
else:
result[WINNERS] = self.get_living_players()
result[LOSERS] = self.dead_players
else:
self.dead_players.extend(players_killed)
result[PLAYERS_KILLED] = players_killed
return result
class Board:
# Constructor
def __init__(self):
self.tiles = {}
self.rule_checker = RuleChecker()
# returns true if the given board coordinate has a tile on it
def is_coordinate_occupied(self, board_coordinate):
return board_coordinate in self.tiles.keys()
# returns dictionary of north, south, east, west neighbors of the given square
def get_board_coordinate_neighbors(self, board_coordinate):
neighbors = {NORTH: None, SOUTH: None, WEST: None, EAST: None}
for side in neighbors.keys():
neighbor = get_coordinate_neighbor(board_coordinate, side)
if self.is_coordinate_occupied(neighbor):
neighbor = self.tiles[neighbor]
elif neighbor != EDGE:
neighbor = None
neighbors[side] = neighbor
return neighbors
# Converts hand_tile to a BoardTile and initializes its neighbors
def convert_to_board_tile(self, hand_tile, board_coordinate):
tile_neighbors = self.get_board_coordinate_neighbors(board_coordinate)
board_tile = BoardTile(hand_tile.paths, tile_neighbors)
return board_tile
# hand_tile is a HandTile , board_coordinate is a string of 2 characters
# in battleship coordiates -> 10x10 board is A-J 1-10
# returns the generated board tile
def place_tile(self, hand_tile, board_coordinate):
board_tile = self.convert_to_board_tile(hand_tile, board_coordinate)
self.tiles[board_coordinate] = board_tile
# Link the newly created board tile to any of its neighbors currently on the board
sides = [NORTH, SOUTH, EAST, WEST]
for side in sides:
new_neighbor_coordinate = get_coordinate_neighbor(
board_coordinate, side)
if self.is_coordinate_occupied(new_neighbor_coordinate):
new_neighbor = self.tiles[new_neighbor_coordinate]
new_neighbor.set_neighbor(get_opposite_side(side), board_tile)
return board_tile
# given a board coordinate and a starting port on the tile at that location
# return the end board coordinate and port of that path on this board
# or EDGE if they fall off the board
# board_coordinate must have a tile on it (be in board.tiles)
def end_of_path(self, board_coordinate, starting_port):
board_tile = self.tiles[board_coordinate]
end_port = board_tile.end_of_path(starting_port)
neighboring_side = port_to_side(end_port)
neighbor_to_move_to = board_tile.neighbors[neighboring_side]
if neighbor_to_move_to == EDGE:
return {TILE: EDGE, PORT: EDGE}
elif neighbor_to_move_to == None:
return {TILE: board_coordinate, PORT: end_port}
else:
new_tile_location = get_coordinate_neighbor(
board_coordinate, neighboring_side)
starting_port_on_new_tile = get_connecting_port(end_port)
return self.end_of_path(new_tile_location,
starting_port_on_new_tile)
# moves given player to given board_coordinate and moves them along the path
# throws exception if player cannot be moved (if there is no tile at the connecting side)
def move_player(self, player):
starting_port = player.current_port
new_coordiate = get_connecting_coordinate(player.current_tile,
starting_port)
if self.is_coordinate_occupied(new_coordiate):
port_on_new_tile = get_connecting_port(starting_port)
ending_location = self.end_of_path(new_coordiate, port_on_new_tile)
player.current_tile = ending_location[TILE]
player.current_port = ending_location[PORT]
else:
logging.info("Player cannot be moved, no tile at: %s",
new_coordiate)
sys.exit(1)
# places a player and a handtile on the board at the given coordinate and port
# this is part of the players intial turn
def first_turn(self, player, hand_tile, board_coordinate, starting_port):
# Rule Checker : sees if tile location is valid
first_turn_check = self.rule_checker.check_first_turn(
self, hand_tile, board_coordinate, starting_port)[LEGAL]
if first_turn_check:
board_tile = self.place_tile(hand_tile, board_coordinate)
end_port = board_tile.end_of_path(starting_port)
player.place_avatar(board_coordinate, end_port)
else:
logging.info("Invalid initial tile placement: %s",
board_coordinate)
sys.exit(1)
def take_turn(self, hand_tile, board_coordinate, player):
# Rule Checker : sees if turn is valid
turn_check = self.rule_checker.check_turn(self, hand_tile,
board_coordinate,
player)[LEGAL]
if turn_check:
self.place_tile(hand_tile, board_coordinate)
self.move_player(player)
else:
logging.info("Invalid turn: %s", board_coordinate)
sys.exit(1)
def get_port_coordinate(self, port):
return (0, 0)
def test_check_first_turn(self):
rc = RuleChecker()
empty_board = Board()
player = Avatar("white")
suicide_tile = HandTile([('s1', 's2'), ('e2', 'e1'), ('n2', 'n1'),
('w1', 'w2')])
tile = HandTile([('n1', 's2'), ('n2', 'e2'), ('e1', 'w2'),
('s1', 'w1')])
# Not on edge
not_the_edge = rc.check_first_turn(empty_board, suicide_tile, "c7",
"w2")
self.assertAlmostEqual(not_the_edge["legal"], False)
self.assertAlmostEqual(not_the_edge["rules broken"], [
"tile placement is not on the board's edge",
"starting port is invalid"
])
# No suicides
suicide_move = rc.check_first_turn(empty_board, suicide_tile, "a1",
"n1")
self.assertAlmostEqual(suicide_move["legal"], False)
self.assertAlmostEqual(suicide_move["rules broken"],
["tile placement is avoidable suicide"])
self.assertAlmostEqual(
rc.check_first_turn(empty_board, suicide_tile, "a1",
"n2")["legal"], False)
self.assertAlmostEqual(
rc.check_first_turn(empty_board, suicide_tile, "a1",
"w1")["legal"], False)
self.assertAlmostEqual(
rc.check_first_turn(empty_board, suicide_tile, "a1",
"w2")["legal"], False)
# No iterior ports allowed
interior_port_move = rc.check_first_turn(empty_board, suicide_tile,
"a1", "e2")
self.assertAlmostEqual(interior_port_move["legal"], False)
self.assertAlmostEqual(interior_port_move["rules broken"],
["starting port is invalid"])
self.assertAlmostEqual(
rc.check_first_turn(empty_board, tile, "a1", "n2")["legal"], True)
self.assertAlmostEqual(
rc.check_first_turn(empty_board, tile, "a1", "s2")["legal"], False)
self.assertAlmostEqual(
rc.check_first_turn(empty_board, tile, "a1", "w2")["legal"], True)
self.assertAlmostEqual(
rc.check_first_turn(empty_board, tile, "a2", "e1")["legal"], False)
self.assertAlmostEqual(
rc.check_first_turn(empty_board, tile, "a2", "n1")["legal"], False)
self.assertAlmostEqual(
rc.check_first_turn(empty_board, tile, "a2", "s1")["legal"], False)
self.assertAlmostEqual(
rc.check_first_turn(empty_board, tile, "a2", "w1")["legal"], True)
self.assertAlmostEqual(
rc.check_first_turn(empty_board, tile, "b1", "e2")["legal"], False)
self.assertAlmostEqual(
rc.check_first_turn(empty_board, tile, "b1", "n2")["legal"], True)
self.assertAlmostEqual(
rc.check_first_turn(empty_board, tile, "b1", "s2")["legal"], False)
self.assertAlmostEqual(
rc.check_first_turn(empty_board, tile, "b1", "w2")["legal"], False)
self.assertAlmostEqual(
rc.check_first_turn(empty_board, tile, "j10", "e2")["legal"], True)
self.assertAlmostEqual(
rc.check_first_turn(empty_board, tile, "j10", "n2")["legal"],
False)
self.assertAlmostEqual(
rc.check_first_turn(empty_board, tile, "j10", "s2")["legal"], True)
self.assertAlmostEqual(
rc.check_first_turn(empty_board, tile, "j10", "w2")["legal"],
False)
empty_board.first_turn(player, tile, "a1", "n1")
# No neighbors
placed_on_occupied_spot = rc.check_first_turn(empty_board, tile, "a1",
"s2")
self.assertAlmostEqual(placed_on_occupied_spot["legal"], False)
self.assertAlmostEqual(placed_on_occupied_spot["rules broken"], [
'coordinate is already occupied', 'starting port is invalid',
'tile placement is avoidable suicide'
])
placed_tile_with_neighbors = rc.check_first_turn(
empty_board, tile, "a1", "s1")
self.assertAlmostEqual(placed_tile_with_neighbors["legal"], False)
self.assertAlmostEqual(placed_tile_with_neighbors["rules broken"], [
'coordinate is already occupied', 'starting port is invalid',
'tile placement is avoidable suicide'
])
self.assertAlmostEqual(
rc.check_first_turn(empty_board, tile, "b1", "e2")["legal"], False)