naja/widgets/info_area.py

   1 """
   2 Widget for the game board information area.
   3 """
   4 import pygame
   5 import pygame.locals as pgl
   6
   7 from naja.constants import (INFO_SIZE, EIGHT_BIT_SCALE, ACT, KEYS,
   8                             EXAMINE)
   9 from naja.events import finish_event
  10 from naja.resources import resources
  11 from naja.resources.mutators import EIGHT_BIT
  12
  13 from naja.widgets.base import Widget
  14 from naja.widgets.tile import BIT_MAP
  15 from naja.widgets.text import TextBoxWidget, TextWidget
  16
  17
  18 HINTS = {
  19         ACT: "Choose an action using the Up/Down keys.\n"
  20              "Press Return to execute the action.",
  21         EXAMINE: "Select a card to examine using the arrow keys."
  22         }
  23
  24 HINT_LEGAL_MOVE = "\nPress Return to move to this card."
  25
  26 TITLES = {
  27         ACT: "Choose an Action",
  28         EXAMINE: "Select a Card",
  29         }
  30
  31
  32 class InfoAreaWidget(Widget):
  33     """
  34     Widget for the game board information area.
  35     """
  36     def __init__(self, pos, state):
  37         super(InfoAreaWidget, self).__init__(pos, INFO_SIZE)
  38         self.state = state
  39         self.chosen = None
  40         self.card_position = state.player.position
  41         self.set_position(state.player.position)
  42
  43     def prepare(self):
  44         if self.state.gameboard.player_mode == ACT:
  45             self.set_position(self.state.player.position)
  46         self.surface = pygame.surface.Surface(INFO_SIZE)
  47         self.surface.fill((0, 0, 0))
  48         # Extract actions and such from the card
  49         title = TextWidget((0, 0), TITLES[self.state.gameboard.player_mode],
  50                            colour=(255, 255, 255))
  51         title.render(self.surface)
  52         y_offset = title.surface.get_rect().height + 8
  53
  54         # TODO: Make this better.
  55         bits_text = ''.join('1' if bit in self.card.bitwise_operand else '0'
  56                             for bit in reversed(range(8)))
  57         card_bits = TextWidget((0, y_offset), bits_text, colour=(255, 255, 0))
  58         card_bits.render(self.surface)
  59         y_offset += card_bits.surface.get_rect().height + 8
  60
  61         for choice, action in enumerate(self.card.actions):
  62             y_offset = self.prepare_action(choice, action, y_offset)
  63         # We cheat horribly for layout reasons
  64         hint_text = HINTS[self.state.gameboard.player_mode]
  65         if self.state.gameboard.player_mode == EXAMINE:
  66             if self.card_position in self.state.player.legal_moves():
  67                 hint_text += HINT_LEGAL_MOVE
  68
  69         hint = TextBoxWidget((4, 0), hint_text, padding=2,
  70                              box_width=(INFO_SIZE[0] - 4) // EIGHT_BIT_SCALE)
  71         hint.prepare()
  72         y_offset = INFO_SIZE[1] - hint.surface.get_rect().height
  73         self.surface.blit(hint.surface, (4, y_offset))
  74
  75     def prepare_action(self, choice, action, y_offset):
  76         text = TextBoxWidget(
  77             (18, y_offset), action.get_text(),
  78             box_width=(INFO_SIZE[0] - 16) // EIGHT_BIT_SCALE,
  79             fontsize=28)
  80         text.render(self.surface)
  81         # self.chosen may be None, in which case we don't draw the border.
  82         if choice == self.chosen:
  83             if not action.check_available(self.state.player):
  84                 colour = (255, 0, 0, 255)
  85             else:
  86                 colour = (255, 255, 0, 128)
  87             bottom = y_offset + text.surface.get_rect().height
  88             right = text.surface.get_rect().width + 12
  89             pygame.draw.lines(self.surface, colour, True,
  90                               [(18, y_offset), (right, y_offset),
  91                                (right, bottom), (18, bottom)], 4)
  92         if action.required_bits:
  93             img_name = BIT_MAP[action.required_bits].replace(
  94                 '.png', '_small.png')
  95             img = resources.get_image(img_name,
  96                                       transforms=(EIGHT_BIT,))
  97             self.surface.blit(img, (0, y_offset))
  98         return y_offset + text.surface.get_rect().height + 16
  99
 100     def set_position(self, position):
 101         self.card_position = position
 102         self.card = self.state.board_locations[self.card_position]
 103         if self.state.gameboard.player_mode == ACT:
 104             if self.chosen is None:
 105                 self.chosen = 0
 106         else:
 107             self.chosen = None
 108
 109     def draw(self, surface):
 110         surface.blit(self.surface, self.pos)
 111
 112     def handle_event(self, ev):
 113         if self.state.gameboard.player_mode == EXAMINE:
 114             return super(InfoAreaWidget, self).handle_event(ev)
 115         if ev.type == pgl.KEYDOWN:
 116             if ev.key in KEYS.SELECT:
 117                 player = self.state.player
 118                 action = self.card.actions[self.chosen]
 119                 if not action.check_available(player):
 120                     print "BEEP!"
 121                 else:
 122                     action.perform_action(self.state.gameboard, self.card)
 123                     self.state.gameboard.replace_card(player.position)
 124                     self.state.gameboard.change_mode(EXAMINE)
 125                     self.set_position(player.position)
 126                 return finish_event()
 127             if ev.key in KEYS.UP:
 128                 if self.chosen > 0:
 129                     self.chosen -= 1
 130                 return finish_event()
 131             if ev.key in KEYS.DOWN:
 132                 if self.chosen + 1 < len(self.card.actions):
 133                     self.chosen += 1
 134                 return finish_event()
 135         return super(InfoAreaWidget, self).handle_event(ev)