naja/widgets/board.py

   1 """
   2 Widget that holds the game tiles.
   3 """
   4 import pygame.locals as pgl
   5
   6 from naja.constants import BOARD_SIZE, TILE_SIZE, KEYS, FPS
   7 from naja.events import InvalidateTheWorld, finish_event
   8 from naja.sound import sound
   9
  10 from naja.widgets.base import Widget
  11 from naja.widgets.tile import TileWidget
  12 from naja.utils import Flashlight
  13
  14
  15 class BoardWidget(Widget):
  16     """
  17     Widget which holds all the tiles that make up the gameboard.
  18     """
  19     def __init__(self, pos, state, info):
  20         super(BoardWidget, self).__init__(pos, BOARD_SIZE)
  21         self.info = info
  22         self.state = state
  23         self.card_pos = state.player.position
  24         self._tiles = []
  25         self.legal = False
  26         self.flash_light = Flashlight(FPS // 2)
  27         for y in range(0, 5):
  28             for x in range(0, 5):
  29                 tile_pos = (pos[0] + x * TILE_SIZE[0],
  30                             pos[1] + y * TILE_SIZE[1])
  31                 self._tiles.append(TileWidget(tile_pos, state, (x, y)))
  32
  33     def prepare(self):
  34         for tile in self._tiles:
  35             tile.set_highlight(self.card_pos, self.flash_light.on)
  36             tile.prepare()
  37         self.size = BOARD_SIZE
  38
  39     def draw(self, surface):
  40         if self.flash_light.tick():
  41             self.prepare()
  42         for tile in self._tiles:
  43             tile.draw(surface)
  44
  45     def update_card_pos(self, card_pos):
  46         self.card_pos = card_pos
  47         self.legal = self.card_pos in self.state.player.legal_moves()
  48         self.info.set_position(self.card_pos, legal=self.legal)
  49         sound.play_sound('zoop.ogg', volume=0.05)
  50
  51     def change_pos(self, offset):
  52         tpos = (offset[0] + self.card_pos[0], offset[1] + self.card_pos[1])
  53         if tpos[0] < 0 or tpos[1] < 0 or tpos[0] > 4 or tpos[1] > 4:
  54             return False
  55         self.update_card_pos(tpos)
  56         return True
  57
  58     def next_viable_pos(self):
  59         moves = self.state.player.legal_moves()
  60         try:
  61             idx = moves.index(self.card_pos)
  62             idx = (idx + 1) % len(moves)
  63         except ValueError:
  64             idx = 0
  65         self.update_card_pos(moves[idx])
  66
  67     def force_skip_animation(self):
  68         for tile in self._tiles:
  69             tile.animation = 0
  70
  71     def handle_event(self, ev):
  72         if InvalidateTheWorld.matches(ev):
  73             self.flash_light.reset()
  74         if ev.type == pgl.KEYDOWN:
  75             if ev.key in KEYS.UP:
  76                 if self.change_pos((0, -1)):
  77                     return finish_event()
  78             elif ev.key in KEYS.DOWN:
  79                 if self.change_pos((0, +1)):
  80                     return finish_event()
  81             elif ev.key in KEYS.LEFT:
  82                 if self.change_pos((-1, 0)):
  83                     return finish_event()
  84             elif ev.key in KEYS.RIGHT:
  85                 if self.change_pos((+1, 0)):
  86                     return finish_event()
  87         return super(BoardWidget, self).handle_event(ev)