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