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