def game_descriptor(board: Board, player_name: int, players: list):
areas = board.get_player_areas(player_name)
regions = board.get_players_regions(player_name)
border = board.get_player_border(player_name)
max_region_size = max(len(r) for r in regions)
rel_border_size_1 = len(border) / sum(
len(board.get_player_border(name)) for name in players)
rel_border_size_2 = sum(a.get_dice() for a in border) / sum(a.get_dice()
for a in areas)
rel_area_size = len(areas) / sum(
len(board.get_player_areas(name)) for name in players)
best_border = []
for r in regions:
if len(r) == max_region_size:
for area in map(lambda a: board.get_area(a), r):
if board.is_at_border(area):
best_border.append(area)
feature_vector = [
max_region_size / len(board.areas), rel_border_size_1,
rel_border_size_2, rel_area_size,
np.mean([survival_prob(a, board) for a in best_border]),
np.mean([rel_area_power(a, board) for a in areas])
]
return np.asarray(feature_vector, dtype=np.float32)
def add_dice_to_player(board: Board, player_name: int):
"""Vytvoří dočasné herní pole s náhodně přidělenými kostkami pro vybraného
hráče. Základní logika předělování kostek je převzatá z implemenetace hry
viz dicewars/server/game.py line:230.
Funkce se používá stejně jako funkce simulate_battle.
Args
----
board (Board): Aktuální stav herního pole
player_name (int): Jméno hráče, kterému se mají přiřadit kostky
"""
affected_areas: Dict[int, int] = {}
dice = 0
regions = board.get_players_regions(player_name)
for region in regions:
dice = max(dice, len(region))
areas: List[Area] = []
for area in board.get_player_areas(player_name):
areas.append(area)
if dice > 64:
dice = 64
while dice and areas:
area = random.choice(areas)
if area.dice >= 8:
areas.remove(area)
else:
if area.name not in affected_areas:
affected_areas[area.name] = area.dice
area.dice += 1
dice -= 1
try:
yield
finally:
# Vrátit herní pole do původního stavu
for name in affected_areas:
board.get_area(name).dice = affected_areas[name]
def add_dice_to_player_worst_case(board: Board, player_name: int, is_yourself: bool, logger):
affected_areas: Dict[int, int] = {}
dice = 0
regions = board.get_players_regions(player_name)
for region in regions:
dice = max(dice, len(region))
if is_yourself:
areas = board.get_player_areas(player_name)
b_a = board.get_player_border(player_name)
areas = list(set(areas)-set(b_a))
if areas is None:
areas = b_a
else:
areas = board.get_player_border(player_name)
arr = [a.get_name() for a in areas]
logger.info("PLayer: {} with areas: {}".format(player_name, arr))
if dice > 64:
dice = 64
while dice and areas:
if is_yourself:
area = random.choice(areas)
while area.dice < 8:
area.dice += 1
dice -= 1
else:
area = areas.pop(0)
areas.append(area)
if area.dice >= 8:
areas.remove(area)
elif not is_yourself:
if area.name not in affected_areas:
affected_areas[area.name] = area.dice
area.dice += 1
dice -= 1
if dice > 0:
if is_yourself:
areas = board.get_player_border(player_name)
else:
areas = board.get_player_areas(player_name)
while dice and areas:
area = random.choice(areas)
if area.dice >= 8:
areas.remove(area)
else:
if area.name not in affected_areas:
affected_areas[area.name] = area.dice
area.dice += 1
dice -= 1
try:
yield
finally:
# Vrátit herní pole do původního stavu
for name in affected_areas:
board.get_area(name).dice = affected_areas[name]
def __maxn_rec(
self,
board: Board,
players_names: Deque[int],
depth: int,
) -> Tuple[Union[Tuple[int, int], None], Dict[int, float]]:
"""
The Max^n recursive algorithm. It uses the single turn expectiminimax
for the computation of the best moves in the individual turns.
:param board: A copy of the game board.
:param players_names: A queue of players (names of players, i.e., IDs)
to be considered in this algorithm. The player on the top of the
queue is a currently associated player. After a player is
processed, he is removed from the queue.
:param depth: A depth of the algorithm. It declinines with recursive
calls of this method.
:return: A tuple where the first item is a tuple (atacker area,
defender area) with the best turn, or None in case there is
no suitable turn. And the second item of the tuple is
a dictionary where keys are names of players and values
are values of the heuristic function for these players in
a current game board.
"""
# there are no more players
if not players_names:
# just evaluate the heuristic function for the AI's player
return None, self._heuristic([self.__player_name], board)
player_name = players_names[-1]
# current player is not alive => skip him
if not board.get_player_areas(player_name):
players_names.pop()
return self.__maxn_rec(deepcopy(board), players_names, depth)
# depth is not 0 => expand lower nodes
if depth:
# expand some lower suitable nodes, according to the single turn
# expectiminimax, the number of nodes to be expanded is decreasing
# with a depth
turns = self.__possible_turns(player_name, board)[:depth]
if not turns:
# no further moves possible => return just the heuristic
# in a leaf node
_, h = self.__maxn_rec(deepcopy(board), players_names, 0)
return None, h
h = {}
turn = 0, 0
for a, b in turns:
board_copy = deepcopy(board)
self.__perform_atack(board_copy, a, b) # simulate an atack
_, new_h = self.__maxn_rec(board_copy, players_names,
depth - 1)
# maximise the heuristic for a current player
if player_name in new_h:
if player_name not in h \
or new_h[player_name] > h[player_name]:
h = deepcopy(new_h)
turn = a, b
return turn if h else None, h
# depth is 0 => advance to further players or compute the heuristic
players_names.pop()
# there are furthe players
if players_names:
return self.__maxn_rec(deepcopy(board), players_names,
self.__MAXN_DEPTH)
# compute the heuristic function for all living players
living_players = set(a.get_owner_name() for a in board.areas.values())
h = self._heuristic(list(living_players), board)
return None, h