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, PALETTE)
   9 from naja.events import finish_event
  10 from naja.resources import resources
  11 from naja.resources.mutators import EIGHT_BIT
  12 from naja.sound import sound
  13 from naja.utils import bit_glyphs
  14
  15 from naja.widgets.base import Widget
  16 from naja.widgets.tile import BIT_MAP
  17 from naja.widgets.text import TextBoxWidget, TextWidget
  18
  19
  20 HINTS = {
  21     ACT: ("Choose an action using the Up/Down keys.\n"
  22           "Press Return to execute the action."),
  23     EXAMINE: "Select a card to examine using the arrow keys.",
  24 }
  25
  26 HINT_LEGAL_MOVE = "\nPress Return to move to this card."
  27
  28 TITLES = {
  29     ACT: "Choose an Action",
  30     EXAMINE: "Select a Card",
  31 }
  32
  33
  34 class InfoAreaWidget(Widget):
  35     """
  36     Widget for the game board information area.
  37     """
  38     def __init__(self, pos, state):
  39         super(InfoAreaWidget, self).__init__(pos, INFO_SIZE)
  40         self.state = state
  41         self.chosen = None
  42         self.card_position = state.player.position
  43         self.set_position(state.player.position)
  44
  45     def prepare(self):
  46         if self.state.gameboard.player_mode == ACT:
  47             self.set_position(self.state.player.position)
  48         self.surface = pygame.surface.Surface(INFO_SIZE)
  49         self.surface.fill((0, 0, 0))
  50         # Extract actions and such from the card
  51         title = TextWidget((0, 0), TITLES[self.state.gameboard.player_mode],
  52                            colour=PALETTE.WHITE)
  53         title.render(self.surface)
  54         y_offset = title.surface.get_rect().height + 8
  55
  56         # TODO: Make this better.
  57         bits_text = ''.join('1' if bit in self.card.bitwise_operand else '0'
  58                             for bit in reversed(range(8)))
  59         if self.card.bitwise_operand:
  60             bits_text = '%s %s' % (
  61                 bits_text, bit_glyphs(self.card.bitwise_operand))
  62         card_bits = TextBoxWidget((0, y_offset), bits_text,
  63                                   box_width=INFO_SIZE[0],
  64                                   colour=PALETTE.LIGHT_TURQUOISE,
  65                                   bg_colour=PALETTE.BLACK)
  66         card_bits.render(self.surface)
  67         y_offset += card_bits.surface.get_rect().height + 8
  68
  69         for choice, action in enumerate(self.card.actions):
  70             y_offset = self.prepare_action(choice, action, y_offset)
  71         # We cheat horribly for layout reasons
  72         hint_text = HINTS[self.state.gameboard.player_mode]
  73         if self.state.gameboard.player_mode == EXAMINE:
  74             if self.card_position in self.state.player.legal_moves():
  75                 hint_text += HINT_LEGAL_MOVE
  76
  77         hint = TextBoxWidget((4, 0), hint_text, padding=2,
  78                              box_width=(INFO_SIZE[0] - 4) // EIGHT_BIT_SCALE)
  79         hint.prepare()
  80         y_offset = INFO_SIZE[1] - hint.surface.get_rect().height
  81         self.surface.blit(hint.surface, (4, y_offset))
  82
  83     def prepare_action(self, choice, action, y_offset):
  84         x_offset = 18
  85         action_viable = action.check_available(self.state.player)
  86         text_colour = PALETTE.BLACK if action_viable else PALETTE.GREY
  87
  88         text = TextBoxWidget(
  89             (x_offset, y_offset), action.get_text(),
  90             box_width=(INFO_SIZE[0] - 16) // EIGHT_BIT_SCALE,
  91             fontsize=28, colour=text_colour)
  92         text.render(self.surface)
  93
  94         border_colour = None
  95         if choice == self.chosen:
  96             border_colour = PALETTE.GREEN if action_viable else PALETTE.ORANGE
  97         if border_colour:
  98             bottom = y_offset + text.surface.get_rect().height
  99             right = text.surface.get_rect().width + x_offset
 100             pygame.draw.lines(self.surface, border_colour, True,
 101                               [(x_offset, y_offset), (right, y_offset),
 102                                (right, bottom), (x_offset, bottom)], 4)
 103         if action.required_bits:
 104             img_name = BIT_MAP[action.required_bits].replace(
 105                 '.png', '_small.png')
 106             img = resources.get_image(img_name,
 107                                       transforms=(EIGHT_BIT,))
 108             self.surface.blit(img, (0, y_offset))
 109         return y_offset + text.surface.get_rect().height + 16
 110
 111     def set_position(self, position):
 112         self.card_position = position
 113         self.card = self.state.board_locations[self.card_position]
 114         if self.state.gameboard.player_mode == ACT:
 115             if self.chosen is None:
 116                 self.chosen = 0
 117         else:
 118             self.chosen = None
 119
 120     def draw(self, surface):
 121         surface.blit(self.surface, self.pos)
 122
 123     def next_action(self, viable_only=False, step=1):
 124         num_actions = len(self.card.actions)
 125         if num_actions == 0:
 126             return
 127         player = self.state.player
 128         chosen = self.chosen
 129         for i in range(num_actions - 1):
 130             # loop through each action at most once.
 131             chosen = (chosen + step) % num_actions
 132             action = self.card.actions[chosen]
 133             if not viable_only or action.check_available(player):
 134                 sound.play_sound('zoop.ogg', volume=0.05)
 135                 self.chosen = chosen
 136
 137     def prev_action(self, viable_only=False):
 138         return self.next_action(viable_only=viable_only, step=-1)
 139
 140     def try_perform_action(self):
 141         player = self.state.player
 142         action = self.card.actions[self.chosen]
 143         if not action.check_available(player):
 144             sound.play_sound('error.ogg')
 145         else:
 146             sound.play_sound('chirp.ogg', volume=0.5)
 147             action.perform_action(self.state.gameboard, self.card)
 148             self.state.gameboard.replace_card(player.position)
 149             self.state.gameboard.change_mode(EXAMINE)
 150             self.set_position(player.position)
 151
 152     def handle_event(self, ev):
 153         if self.state.gameboard.player_mode == EXAMINE:
 154             return super(InfoAreaWidget, self).handle_event(ev)
 155         if ev.type == pgl.KEYDOWN:
 156             if ev.key in KEYS.SELECT:
 157                 self.try_perform_action()
 158                 return finish_event()
 159             if ev.key in KEYS.UP:
 160                 self.next_action()
 161                 return finish_event()
 162             if ev.key in KEYS.DOWN:
 163                 self.prev_action()
 164                 return finish_event()
 165             if ev.key in KEYS.SWITCH:
 166                 self.next_action(viable_only=True)
 167                 return finish_event()
 168         return super(InfoAreaWidget, self).handle_event(ev)