naja/actions.py

   1 from naja.constants import ACTION_GLYPHS, BITS, CHESS_PIECES
   2 from naja.sound import sound
   3 from naja.utils import bit_glyphs, move_glyph
   4
   5
   6 class LocationAction(object):
   7     """
   8     An action that may be performed on a location.
   9     """
  10
  11     TEXT = None
  12     GLYPHS = tuple()
  13     MSB_GLYPH = None
  14
  15     def __init__(self, required_bits, **data):
  16         self.required_bits = required_bits
  17         self.data = data
  18
  19     def get_text(self, location=None):
  20         substitutions = self.data.copy()
  21
  22         if 'direction' in self.data:
  23             substitutions['rowcol'] = {
  24                 'NORTH': 'column',
  25                 'SOUTH': 'column',
  26                 'EAST': 'row',
  27                 'WEST': 'row',
  28             }[self.data['direction']]
  29             substitutions['direction'] = '{%s}' % (substitutions['direction'],)
  30
  31         if 'chesspiece' in self.data:
  32             substitutions['chesspiece_name'] = move_glyph(
  33                 self.data['chesspiece'])
  34
  35         if 'rot_direction' in self.data:
  36             substitutions['rot_direction_name'] = '{%s}' % (
  37                 substitutions['rot_direction'],)
  38
  39         if location is None:
  40             substitutions['location_bits'] = 'bits specified by this location'
  41         else:
  42             substitutions['location_bits'] = bit_glyphs(
  43                 location.bitwise_operand)
  44
  45         return self.TEXT % substitutions
  46
  47     def check_available(self, player):
  48         return player.bits.check_bits(self.required_bits)
  49
  50     def perform_action(self, board, location):
  51         raise NotImplementedError(
  52             "%s does not implement perform_action()." % (type(self).__name__,))
  53
  54     def check_and_clear_MSB(self, player):
  55         if player.bits.check_bit(BITS.MSB):
  56             player.bits.clear_bit(BITS.MSB)
  57             return True
  58         else:
  59             return False
  60
  61     def export(self):
  62         return {'required_bits': list(self.required_bits),
  63                 'data': self.data,
  64                 'action_class': self.__class__.__name__}
  65
  66
  67 class DoNothing(LocationAction):
  68     TEXT = "No effect."
  69     GLYPHS = (ACTION_GLYPHS.NOTHING,)
  70
  71     def perform_action(self, board, location):
  72         pass
  73
  74
  75 class LoseHealthOrMSB(LocationAction):
  76     TEXT = "Lose {HEALTH} or {MSB}."
  77     MSB_GLYPH = ACTION_GLYPHS.DAMAGE
  78
  79     def perform_action(self, board, location):
  80         if not self.check_and_clear_MSB(board.player):
  81             board.lose_health()
  82
  83
  84 class SetBits(LocationAction):
  85     TEXT = "Set %(location_bits)s."
  86     GLYPHS = (ACTION_GLYPHS.SET_BITS,)
  87
  88     def perform_action(self, board, location):
  89         board.player.bits.set_bits(location.bitwise_operand)
  90
  91
  92 class ToggleBits(LocationAction):
  93     TEXT = "Toggle %(location_bits)s."
  94     GLYPHS = (ACTION_GLYPHS.TOGGLE_BITS,)
  95
  96     def perform_action(self, board, location):
  97         board.player.bits.toggle_bits(location.bitwise_operand)
  98
  99
 100 class LoseHealthOrMSBAndSetBits(LocationAction):
 101     TEXT = "Lose {HEALTH} or {MSB}, then set %(location_bits)s."
 102     GLYPHS = (ACTION_GLYPHS.SET_BITS,)
 103     MSB_GLYPH = ACTION_GLYPHS.DAMAGE
 104
 105     def perform_action(self, board, location):
 106         if not self.check_and_clear_MSB(board.player):
 107             board.lose_health()
 108         board.player.bits.set_bits(location.bitwise_operand)
 109
 110
 111 class AcquireWinToken(LocationAction):
 112     TEXT = "Gain {WINTOKEN}, then clear {RED,GREEN,BLUE}."
 113     GLYPHS = (ACTION_GLYPHS.WINTOKEN,)
 114
 115     def perform_action(self, board, location):
 116         board.acquire_win_token()
 117         board.player.bits.clear_bits(set([
 118             BITS.RED, BITS.GREEN, BITS.BLUE,
 119         ]))
 120
 121
 122 class GainHealth(LocationAction):
 123     TEXT = "Gain {HEALTH}."
 124     GLYPHS = (ACTION_GLYPHS.HEAL,)
 125
 126     def perform_action(self, board, location):
 127         board.gain_health()
 128
 129
 130 class GainHealthAndClearBitsOrMSB(LocationAction):
 131     TEXT = "Gain {HEALTH}, then clear %(location_bits)s or {MSB}."
 132     GLYPHS = (ACTION_GLYPHS.HEAL,)
 133     MSB_GLYPH = ACTION_GLYPHS.CLEAR_BITS
 134
 135     def perform_action(self, board, location):
 136         board.gain_health()
 137         if not self.check_and_clear_MSB(board.player):
 138             board.player.bits.clear_bits(location.bitwise_operand)
 139
 140
 141 class ShiftLocations(LocationAction):
 142     TEXT = "Shift current %(rowcol)s %(direction)s."
 143     GLYPHS = (ACTION_GLYPHS.CHANGE_BOARD,)
 144
 145     def perform_action(self, board, location):
 146         sound.play_sound('grind.ogg')
 147         board.shift_locations(self.data['direction'])
 148
 149
 150 class RotateLocations(LocationAction):
 151     TEXT = "Rotate adjacent locations %(rot_direction_name)s."
 152     GLYPHS = (ACTION_GLYPHS.CHANGE_BOARD,)
 153
 154     def perform_action(self, board, location):
 155         sound.play_sound('grind.ogg')
 156         board.rotate_locations(self.data['rot_direction'])
 157
 158
 159 class AllowChessMove(LocationAction):
 160     TEXT = "Move like a %(chesspiece_name)s for one turn."
 161     GLYPHS = (ACTION_GLYPHS.MOVEMENT,)
 162
 163     def perform_action(self, board, location):
 164         if self.data['chesspiece'] in CHESS_PIECES:
 165             chesspiece = CHESS_PIECES[self.data['chesspiece']]
 166             board.allow_chess_move(chesspiece)