naja/gameboard.py

   1 from random import choice
   2
   3 from naja.constants import(
   4     BITS, DIRECTION_BITS, CONDITION_BITS, PLAYER_DEFAULTS,
   5     ACT, EXAMINE, 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.player_mode = state.get('player_mode', EXAMINE)
  29         self.has_cheated = state.get('cheater', options.cheat_enabled)
  30         self.clock_count = state.get('clock_count', 0)
  31         self.replacement_params = state.get('replacement_params', None)
  32
  33     @classmethod
  34     def new_game(cls, deck, initial_bits=None, initial_pos=None,
  35                  max_health=None, wins_required=None):
  36
  37         defaults = {
  38             'initial_bits': PLAYER_DEFAULTS.INITIAL_BITS,
  39             'initial_pos': PLAYER_DEFAULTS.INITIAL_POS,
  40             'max_health': PLAYER_DEFAULTS.MAX_HEALTH,
  41             'wins_required': PLAYER_DEFAULTS.WINS_REQUIRED,
  42         }
  43
  44         deck_defaults = deck.get('defaults', {})
  45         for k, v in deck_defaults.iteritems():
  46             if isinstance(v, list):
  47                 deck_defaults[k] = tuple(v)
  48         defaults.update(deck_defaults)
  49
  50         if initial_bits is None:
  51             initial_bits = defaults['initial_bits']
  52         if initial_pos is None:
  53             initial_pos = defaults['initial_pos']
  54         if max_health is None:
  55             max_health = defaults['max_health']
  56         if wins_required is None:
  57             wins_required = defaults['wins_required']
  58
  59         assert wins_required + max_health == 8
  60
  61         # Overriden by command line
  62         if options.initial_bits:
  63             initial_bits = options.initial_bits
  64
  65         state = {
  66             'max_health': max_health,
  67             'health': max_health,
  68             'wins_required': wins_required,
  69             'wins': 0,
  70             'locations': deck['cards'],
  71             'puzzle': deck.get('puzzle', False),
  72             'clock_count': 0,
  73             'replacement_params': deck.get('replacement_params', None),
  74         }
  75         player = Player(initial_bits, initial_pos)
  76         board_locations = cls.import_board_locations(
  77             cls.generate_board(deck))
  78         board = cls(state, player, board_locations)
  79         player.set_gameboard(board)
  80         return board
  81
  82     @classmethod
  83     def import_game(cls, definition):
  84         state = definition.copy()
  85         player = Player.import_player(state.pop('player'))
  86         board_locations = cls.import_board_locations(
  87             state.pop('board_locations'))
  88         board = cls(state, player, board_locations)
  89         player.set_gameboard(board)
  90         return board
  91
  92     def export(self):
  93         data = {
  94             'max_health': self.max_health,
  95             'health': self.health,
  96             'wins_required': self.wins_required,
  97             'wins': self.wins,
  98             'locations': [item.copy() for item in self.locations],
  99             'puzzle': self.puzzle,
 100             'player': self.player.export(),
 101             'board_locations': self.export_board_locations(),
 102             'player_mode': self.player_mode,
 103             'clock_count': self.clock_count,
 104             'replacement_params': self.replacement_params,
 105         }
 106         if options.cheat_enabled:
 107             self.has_cheated = True
 108         if self.has_cheated:
 109             data['cheater'] = True
 110         return data
 111
 112     @classmethod
 113     def import_locations(cls, locations_definition):
 114         return [
 115             LocationCard.import_location(definition)
 116             for definition in locations_definition]
 117
 118     def export_board_locations(self):
 119         return sorted(
 120             (position, location.export())
 121             for position, location in self.board_locations.iteritems())
 122
 123     @classmethod
 124     def import_board_locations(cls, board_locations_definition):
 125         return dict(
 126             (tuple(position), LocationCard.import_location(definition))
 127             for position, definition in board_locations_definition)
 128
 129     @classmethod
 130     def generate_board(cls, deck):
 131         if deck.get('puzzle', False):
 132             return cls.generate_puzzle_board(deck)
 133         else:
 134             return cls.generate_random_board(deck)
 135
 136     @classmethod
 137     def generate_puzzle_board(cls, deck):
 138         assert len(deck['cards']) == 5 * 5
 139         replacement_params = deck.get('replacement_params', None)
 140         board_locations = [
 141             [(i % 5, i // 5),
 142              LocationCard.new_location(
 143                  card.copy(), replacement_params, puzzle=True).export()]
 144             for i, card in enumerate(deck['cards'])
 145         ]
 146         return board_locations
 147
 148     @classmethod
 149     def generate_random_board(cls, deck):
 150         board_locations = []
 151         replacement_params = deck.get('replacement_params', None)
 152         for x in range(5):
 153             for y in range(5):
 154                 new_choice = cls.choose_card(deck['cards'], board_locations)
 155                 board_location = LocationCard.new_location(
 156                     new_choice.copy(), replacement_params)
 157                 board_locations.append([(x, y), board_location.export()])
 158         return board_locations
 159
 160     def lose_health(self):
 161         self.health -= 1
 162         if self.health <= 0:
 163             self.end_game(win=False)
 164
 165     def gain_health(self):
 166         if self.health < self.max_health:
 167             self.health += 1
 168
 169     def acquire_win_token(self):
 170         self.wins += 1
 171         if self.wins >= self.wins_required:
 172             self.end_game(win=True)
 173
 174     def card_used(self, position):
 175         if not self.puzzle:
 176             self.replace_card(position)
 177
 178     def replace_card(self, position):
 179         new_choice = self.choose_card(self.locations,
 180                                       self.board_locations.items(),
 181                                       position)
 182         location = LocationCard.new_location(new_choice.copy(),
 183                                              self.replacement_params)
 184         self.board_locations[position] = location
 185
 186     @classmethod
 187     def choose_card(cls, cards, board_locations, position=None):
 188         # Find which cards are at their maximum and exclude them from
 189         # the choice list
 190         counts = {}
 191         choices = dict((card['card_name'], card) for card in cards)
 192         for pos, card in board_locations:
 193             if pos == position:
 194                 # skip the card we're replacing if appropriate
 195                 continue
 196             if isinstance(card, LocationCard):
 197                 key = card.card_name
 198                 max_num = card.max_number
 199             else:
 200                 key = card['card_name']
 201                 max_num = card.get('max_number', 25)
 202             counts.setdefault(key, 0)
 203             counts[key] += 1
 204             if counts[key] >= max_num:
 205                 if key in choices:
 206                     del choices[key]
 207         return choice(choices.values())
 208
 209     def shift_location_row(self, change, is_vertical):
 210         px, py = self.player.position
 211         shifted_locations = {}
 212         mkpos = lambda i: (px, i) if is_vertical else (i, py)
 213
 214         for i in range(5):
 215             if (px, py) == mkpos(i):
 216                 continue
 217             new_i = (i + change) % 5
 218             if (px, py) == mkpos(new_i):
 219                 new_i = (new_i + change) % 5
 220             shifted_locations[mkpos(new_i)] = self.board_locations[mkpos(i)]
 221
 222         self.board_locations.update(shifted_locations)
 223
 224     def shift_locations(self, direction):
 225         if BITS[direction] == BITS.NORTH:
 226             self.shift_location_row(-1, is_vertical=True)
 227         elif BITS[direction] == BITS.SOUTH:
 228             self.shift_location_row(1, is_vertical=True)
 229         elif BITS[direction] == BITS.EAST:
 230             self.shift_location_row(1, is_vertical=False)
 231         elif BITS[direction] == BITS.WEST:
 232             self.shift_location_row(-1, is_vertical=False)
 233
 234     def rotate_locations(self, direction):
 235         px, py = self.player.position
 236         locations_to_rotate = []
 237         rotated_locations = {}
 238
 239         if py > 0:
 240             for i in range(max(0, px - 1), min(5, px + 2)):
 241                 locations_to_rotate.append((i, py - 1))
 242
 243         if px < 4:
 244             locations_to_rotate.append((px + 1, py))
 245
 246         if py < 4:
 247             for i in reversed(range(max(0, px - 1), min(5, px + 2))):
 248                 locations_to_rotate.append((i, py + 1))
 249
 250         if px > 0:
 251             locations_to_rotate.append((px - 1, py))
 252
 253         if ROTATION[direction] == ROTATION.CLOCKWISE:
 254             new_positions = locations_to_rotate[1:] + [locations_to_rotate[0]]
 255         elif ROTATION[direction] == ROTATION.ANTICLOCKWISE:
 256             new_positions = (
 257                 [locations_to_rotate[-1]] + locations_to_rotate[:-1])
 258
 259         for old, new in zip(locations_to_rotate, new_positions):
 260             rotated_locations[new] = self.board_locations[old]
 261
 262         self.board_locations.update(rotated_locations)
 263
 264     def allow_chess_move(self, chesspiece):
 265         self.player.allow_chess_move(chesspiece)
 266
 267     def change_mode(self, new_mode):
 268         """Advance to the next mode"""
 269         if new_mode == self.player_mode:
 270             raise RuntimeError("Inconsistent state. Setting mode %s to itself"
 271                                % self.player_mode)
 272         elif new_mode in (ACT, EXAMINE):
 273             self.player_mode = new_mode
 274             if new_mode is EXAMINE:
 275                 self.board_update()
 276         else:
 277             raise RuntimeError("Illegal player mode %s" % self.player_mode)
 278
 279     def board_update(self):
 280         self.clock_count += 1
 281         for position, location in self.board_locations.iteritems():
 282             location.timer_action(position, self)
 283
 284     def end_game(self, win):
 285         # TODO: Find a way to not have UI stuff in game logic stuff.
 286         from naja.events import SceneChangeEvent
 287         from naja.scenes.lose import LoseScene
 288         from naja.scenes.win import WinScene
 289         sound.stop()
 290         if win:
 291             SceneChangeEvent.post(WinScene)
 292         else:
 293             SceneChangeEvent.post(LoseScene)
 294
 295
 296 class LocationCard(object):
 297     """
 298     A particular set of options available on a location.
 299     """
 300
 301     def __init__(self, card_name, bitwise_operand, location_actions,
 302                  replacement_time=None, max_number=25):
 303         self.card_name = card_name
 304         self.bitwise_operand = bitwise_operand
 305         self.actions = location_actions
 306         self.max_number = max_number
 307         self.replacement_time = replacement_time
 308         if options.debug:
 309             for action in self.actions:
 310                 action.sanity_check(self)
 311
 312     @classmethod
 313     def import_location(cls, state):
 314         location_actions = [
 315             cls.build_action(definition) for definition in state['actions']]
 316         return cls(state['card_name'], state['bitwise_operand'],
 317                    location_actions, state['replacement_time'],
 318                    state['max_number'])
 319
 320     @classmethod
 321     def build_action(cls, definition):
 322         action_class = getattr(actions, definition['action_class'])
 323         required_bits = parse_bits(definition['required_bits'])
 324         data = definition.get('data', {})
 325         return action_class(required_bits, **data)
 326
 327     @classmethod
 328     def new_location(cls, definition, replacement_params=None, puzzle=False):
 329         if 'bits' in definition:
 330             bits = parse_bits(definition['bits'])
 331         else:
 332             bits = cls.generate_bitwise_operand()
 333
 334         if 'replacement_time' in definition:
 335             replacement_time = definition['replacement_time']
 336         else:
 337             replacement_time = cls.generate_replacement_time(
 338                 replacement_params)
 339
 340         max_number = definition.get('max_number', 25)
 341         card_name = definition['card_name']
 342         location = cls.import_location({
 343             'bitwise_operand': bits,
 344             'actions': definition['actions'],
 345             'max_number': max_number,
 346             'card_name': card_name,
 347             'replacement_time': replacement_time,
 348         })
 349         if not puzzle:
 350             location.check_actions()
 351         return location
 352
 353     def export(self):
 354         return {
 355             'bitwise_operand': sorted(self.bitwise_operand),
 356             'actions': [action.export() for action in self.actions],
 357             'max_number': self.max_number,
 358             'card_name': self.card_name,
 359             'replacement_time': self.replacement_time,
 360         }
 361
 362     def check_actions(self):
 363         if not self.actions:
 364             print "Warning: Location has no actions."
 365             self.insert_default_default_action()
 366         if self.actions[0].required_bits:
 367             self.insert_default_default_action()
 368
 369     def insert_default_default_action(self):
 370         self.actions.insert(0, self.build_action({
 371             'action_class': 'DoNothing',
 372             'required_bits': [],
 373         }))
 374
 375     @staticmethod
 376     def generate_bitwise_operand():
 377         """
 378         Generate a set of two or three bits. At least one direction and one
 379         condition bit will be included. There is a low probability of choosing
 380         a third bit from the complete set.
 381         """
 382         bits = set()
 383         bits.add(choice(DIRECTION_BITS.values()))
 384         bits.add(choice(CONDITION_BITS.values()))
 385         # One in three chance of adding a third bit, with a further one in four
 386         # chance that it will match a bit already chosen.
 387         if choice(range(3)) == 0:
 388             bits.add(choice(BITS.values()))
 389         return frozenset(bits)
 390
 391     @staticmethod
 392     def generate_replacement_time(replacement_params):
 393         if replacement_params is None:
 394             return None
 395         else:
 396             if replacement_params['chance'] > random.random():
 397                 return random.randint(replacement_params['min'],
 398                                       replacement_params['max'])
 399             else:
 400                 return None
 401
 402     def timer_action(self, position, board):
 403         if self.replacement_time is not None:
 404             self.replacement_time -= 1
 405             if self.replacement_time <= 0:
 406                 board.replace_card(position)