naja/gameboard.py

   1 from random import choice
   2
   3 from naja.constants import(
   4     BITS, DIRECTION_BITS, CONDITION_BITS, PLAYER_DEFAULTS,
   5     ROTATION)
   6 from naja.options import options
   7 from naja.player import Player
   8 from naja import actions
   9 from naja.sound import sound
  10 from naja.utils import parse_bits
  11 import random
  12
  13
  14 class GameBoard(object):
  15     """
  16     A representation of the game board.
  17     """
  18
  19     def __init__(self, state, player, board_locations):
  20         self.max_health = state['max_health']
  21         self.wins_required = state['wins_required']
  22         self.health = state['health']
  23         self.wins = state['wins']
  24         self.locations = [item.copy() for item in state['locations']]
  25         self.puzzle = state.get('puzzle', False)
  26         self.player = player
  27         self.board_locations = board_locations
  28         self.has_cheated = state.get('cheater', options.cheat_enabled)
  29         self.clock_count = state.get('clock_count', 0)
  30         self.replacement_params = state.get('replacement_params', None)
  31
  32     @classmethod
  33     def new_game(cls, deck, initial_bits=None, initial_pos=None,
  34                  max_health=None, wins_required=None):
  35
  36         defaults = {
  37             'initial_bits': PLAYER_DEFAULTS.INITIAL_BITS,
  38             'initial_pos': PLAYER_DEFAULTS.INITIAL_POS,
  39             'max_health': PLAYER_DEFAULTS.MAX_HEALTH,
  40             'wins_required': PLAYER_DEFAULTS.WINS_REQUIRED,
  41         }
  42
  43         deck_defaults = deck.get('defaults', {})
  44         for k, v in deck_defaults.iteritems():
  45             if isinstance(v, list):
  46                 deck_defaults[k] = tuple(v)
  47         defaults.update(deck_defaults)
  48
  49         if initial_bits is None:
  50             initial_bits = defaults['initial_bits']
  51         if initial_pos is None:
  52             initial_pos = defaults['initial_pos']
  53         if max_health is None:
  54             max_health = defaults['max_health']
  55         if wins_required is None:
  56             wins_required = defaults['wins_required']
  57
  58         assert wins_required + max_health == 8
  59
  60         # Overriden by command line
  61         if options.initial_bits:
  62             initial_bits = options.initial_bits
  63
  64         state = {
  65             'max_health': max_health,
  66             'health': max_health,
  67             'wins_required': wins_required,
  68             'wins': 0,
  69             'locations': deck['cards'],
  70             'puzzle': deck.get('puzzle', False),
  71             'clock_count': 0,
  72             'replacement_params': deck.get('replacement_params', None),
  73         }
  74         player = Player(initial_bits, initial_pos)
  75         board_locations = cls.import_board_locations(
  76             cls.generate_board(deck))
  77         board = cls(state, player, board_locations)
  78         player.set_gameboard(board)
  79         return board
  80
  81     @classmethod
  82     def import_game(cls, definition):
  83         state = definition.copy()
  84         player = Player.import_player(state.pop('player'))
  85         board_locations = cls.import_board_locations(
  86             state.pop('board_locations'))
  87         board = cls(state, player, board_locations)
  88         player.set_gameboard(board)
  89         return board
  90
  91     def export(self):
  92         data = {
  93             'max_health': self.max_health,
  94             'health': self.health,
  95             'wins_required': self.wins_required,
  96             'wins': self.wins,
  97             'locations': [item.copy() for item in self.locations],
  98             'puzzle': self.puzzle,
  99             'player': self.player.export(),
 100             'board_locations': self.export_board_locations(),
 101             'clock_count': self.clock_count,
 102             'replacement_params': self.replacement_params,
 103         }
 104         if options.cheat_enabled:
 105             self.has_cheated = True
 106         if self.has_cheated:
 107             data['cheater'] = True
 108         return data
 109
 110     @classmethod
 111     def import_locations(cls, locations_definition):
 112         return [
 113             LocationCard.import_location(definition)
 114             for definition in locations_definition]
 115
 116     def export_board_locations(self):
 117         return sorted(
 118             (position, location.export())
 119             for position, location in self.board_locations.iteritems())
 120
 121     @classmethod
 122     def import_board_locations(cls, board_locations_definition):
 123         return dict(
 124             (tuple(position), LocationCard.import_location(definition))
 125             for position, definition in board_locations_definition)
 126
 127     @classmethod
 128     def generate_board(cls, deck):
 129         if deck.get('puzzle', False):
 130             return cls.generate_puzzle_board(deck)
 131         else:
 132             return cls.generate_random_board(deck)
 133
 134     @classmethod
 135     def generate_puzzle_board(cls, deck):
 136         assert len(deck['cards']) == 5 * 5
 137         replacement_params = deck.get('replacement_params', None)
 138         board_locations = [
 139             [(i % 5, i // 5),
 140              LocationCard.new_location(
 141                  card.copy(), replacement_params, puzzle=True).export()]
 142             for i, card in enumerate(deck['cards'])
 143         ]
 144         return board_locations
 145
 146     @classmethod
 147     def generate_random_board(cls, deck):
 148         board_locations = []
 149         replacement_params = deck.get('replacement_params', None)
 150         for x in range(5):
 151             for y in range(5):
 152                 new_choice = cls.choose_card(deck['cards'], board_locations)
 153                 board_location = LocationCard.new_location(
 154                     new_choice.copy(), replacement_params)
 155                 board_locations.append([(x, y), board_location.export()])
 156         return board_locations
 157
 158     def lose_health(self):
 159         self.health -= 1
 160         if self.health <= 0:
 161             self.end_game(win=False)
 162
 163     def gain_health(self):
 164         if self.health < self.max_health:
 165             self.health += 1
 166
 167     def acquire_win_token(self):
 168         self.wins += 1
 169         if self.wins >= self.wins_required:
 170             self.end_game(win=True)
 171
 172     def card_used(self, position):
 173         if not self.puzzle:
 174             self.replace_card(position)
 175
 176     def replace_card(self, position):
 177         new_choice = self.choose_card(self.locations,
 178                                       self.board_locations.items(),
 179                                       position)
 180         location = LocationCard.new_location(new_choice.copy(),
 181                                              self.replacement_params)
 182         self.board_locations[position] = location
 183
 184     @classmethod
 185     def choose_card(cls, cards, board_locations, position=None):
 186         # Find which cards are at their maximum and exclude them from
 187         # the choice list
 188         counts = {}
 189         choices = dict((card['card_name'], card) for card in cards)
 190         for pos, card in board_locations:
 191             if pos == position:
 192                 # skip the card we're replacing if appropriate
 193                 continue
 194             if isinstance(card, LocationCard):
 195                 key = card.card_name
 196                 max_num = card.max_number
 197             else:
 198                 key = card['card_name']
 199                 max_num = card.get('max_number', 25)
 200             counts.setdefault(key, 0)
 201             counts[key] += 1
 202             if counts[key] >= max_num:
 203                 if key in choices:
 204                     del choices[key]
 205         return choice(choices.values())
 206
 207     def shift_location_row(self, change, is_vertical, skip_player=True):
 208         px, py = self.player.position
 209         shifted_locations = {}
 210         mkpos = lambda i: (px, i) if is_vertical else (i, py)
 211
 212         for i in range(5):
 213             if skip_player and (px, py) == mkpos(i):
 214                 continue
 215             new_i = (i + change) % 5
 216             if skip_player and (px, py) == mkpos(new_i):
 217                 new_i = (new_i + change) % 5
 218             shifted_locations[mkpos(new_i)] = self.board_locations[mkpos(i)]
 219
 220         self.board_locations.update(shifted_locations)
 221
 222     def shift_locations(self, direction, skip_player=True):
 223         if BITS[direction] == BITS.NORTH:
 224             self.shift_location_row(-1, is_vertical=True,
 225                                     skip_player=skip_player)
 226         elif BITS[direction] == BITS.SOUTH:
 227             self.shift_location_row(1, is_vertical=True,
 228                                     skip_player=skip_player)
 229         elif BITS[direction] == BITS.EAST:
 230             self.shift_location_row(1, is_vertical=False,
 231                                     skip_player=skip_player)
 232         elif BITS[direction] == BITS.WEST:
 233             self.shift_location_row(-1, is_vertical=False,
 234                                     skip_player=skip_player)
 235
 236     def rotate_locations(self, direction):
 237         px, py = self.player.position
 238         locations_to_rotate = []
 239         rotated_locations = {}
 240
 241         if py > 0:
 242             for i in range(max(0, px - 1), min(5, px + 2)):
 243                 locations_to_rotate.append((i, py - 1))
 244
 245         if px < 4:
 246             locations_to_rotate.append((px + 1, py))
 247
 248         if py < 4:
 249             for i in reversed(range(max(0, px - 1), min(5, px + 2))):
 250                 locations_to_rotate.append((i, py + 1))
 251
 252         if px > 0:
 253             locations_to_rotate.append((px - 1, py))
 254
 255         if ROTATION[direction] == ROTATION.CLOCKWISE:
 256             new_positions = locations_to_rotate[1:] + [locations_to_rotate[0]]
 257         elif ROTATION[direction] == ROTATION.ANTICLOCKWISE:
 258             new_positions = (
 259                 [locations_to_rotate[-1]] + locations_to_rotate[:-1])
 260
 261         for old, new in zip(locations_to_rotate, new_positions):
 262             rotated_locations[new] = self.board_locations[old]
 263
 264         self.board_locations.update(rotated_locations)
 265
 266     def allow_chess_move(self, chesspiece):
 267         self.player.allow_chess_move(chesspiece)
 268
 269     def board_update(self):
 270         self.clock_count += 1
 271         for position, location in self.board_locations.iteritems():
 272             location.timer_action(position, self)
 273
 274     def end_game(self, win):
 275         # TODO: Find a way to not have UI stuff in game logic stuff.
 276         from naja.events import SceneChangeEvent
 277         from naja.scenes.lose import LoseScene
 278         from naja.scenes.win import WinScene
 279         sound.stop()
 280         if win:
 281             SceneChangeEvent.post(WinScene)
 282         else:
 283             SceneChangeEvent.post(LoseScene)
 284
 285
 286 class LocationCard(object):
 287     """
 288     A particular set of options available on a location.
 289     """
 290
 291     def __init__(self, card_name, bitwise_operand, location_actions,
 292                  replacement_time=None, max_number=25):
 293         self.card_name = card_name
 294         self.bitwise_operand = bitwise_operand
 295         self.actions = location_actions
 296         self.max_number = max_number
 297         self.replacement_time = replacement_time
 298         if options.debug:
 299             for action in self.actions:
 300                 action.sanity_check(self)
 301
 302     @classmethod
 303     def import_location(cls, state):
 304         location_actions = [
 305             cls.build_action(definition) for definition in state['actions']]
 306         return cls(state['card_name'], state['bitwise_operand'],
 307                    location_actions, state['replacement_time'],
 308                    state['max_number'])
 309
 310     @classmethod
 311     def build_action(cls, definition):
 312         action_class = getattr(actions, definition['action_class'])
 313         required_bits = parse_bits(definition['required_bits'])
 314         data = definition.get('data', {})
 315         return action_class(required_bits, **data)
 316
 317     @classmethod
 318     def new_location(cls, definition, replacement_params=None, puzzle=False):
 319         if 'bits' in definition:
 320             bits = parse_bits(definition['bits'])
 321         else:
 322             bits = cls.generate_bitwise_operand()
 323
 324         if 'replacement_time' in definition:
 325             replacement_time = definition['replacement_time']
 326         else:
 327             replacement_time = cls.generate_replacement_time(
 328                 replacement_params)
 329
 330         max_number = definition.get('max_number', 25)
 331         card_name = definition['card_name']
 332         location = cls.import_location({
 333             'bitwise_operand': bits,
 334             'actions': definition['actions'],
 335             'max_number': max_number,
 336             'card_name': card_name,
 337             'replacement_time': replacement_time,
 338         })
 339         if not puzzle:
 340             location.check_actions()
 341         return location
 342
 343     def export(self):
 344         return {
 345             'bitwise_operand': sorted(self.bitwise_operand),
 346             'actions': [action.export() for action in self.actions],
 347             'max_number': self.max_number,
 348             'card_name': self.card_name,
 349             'replacement_time': self.replacement_time,
 350         }
 351
 352     def check_actions(self):
 353         if not self.actions:
 354             print "Warning: Location has no actions."
 355             self.insert_default_default_action()
 356         if self.actions[0].required_bits:
 357             self.insert_default_default_action()
 358
 359     def insert_default_default_action(self):
 360         self.actions.insert(0, self.build_action({
 361             'action_class': 'DoNothing',
 362             'required_bits': [],
 363         }))
 364
 365     @staticmethod
 366     def generate_bitwise_operand():
 367         """
 368         Generate a set of two or three bits. At least one direction and one
 369         condition bit will be included. There is a low probability of choosing
 370         a third bit from the complete set.
 371         """
 372         bits = set()
 373         bits.add(choice(DIRECTION_BITS.values()))
 374         bits.add(choice(CONDITION_BITS.values()))
 375         # One in three chance of adding a third bit, with a further one in four
 376         # chance that it will match a bit already chosen.
 377         if choice(range(3)) == 0:
 378             bits.add(choice(BITS.values()))
 379         return frozenset(bits)
 380
 381     @staticmethod
 382     def generate_replacement_time(replacement_params):
 383         if replacement_params is None:
 384             return None
 385         else:
 386             if replacement_params['chance'] > random.random():
 387                 return random.randint(replacement_params['min'],
 388                                       replacement_params['max'])
 389             else:
 390                 return None
 391
 392     def timer_action(self, position, board):
 393         if self.replacement_time is not None:
 394             self.replacement_time -= 1
 395             if self.replacement_time <= 0:
 396                 board.replace_card(position)