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