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 (
   8     INFO_SIZE, EIGHT_BIT_SCALE, ACT, KEYS, EXAMINE, PALETTE,
   9     ACTION_TEXT_OFFSET, INFO_LEFT_PADDING)
  10 from naja.events import finish_event
  11 from naja.resources import resources
  12 from naja.resources.mutators import EIGHT_BIT, blender
  13 from naja.sound import sound
  14 from naja.utils import bit_glyphs
  15
  16 from naja.widgets.base import Widget
  17 from naja.widgets.tile import BIT_MAP
  18 from naja.widgets.text import TextBoxWidget, TextWidget
  19
  20
  21 HINTS = {
  22     ACT: ("Choose an action using the Up/Down keys.\n"
  23           "Press Return to execute the action."),
  24     EXAMINE: "Select a card to examine using the arrow keys.",
  25 }
  26
  27 HINT_LEGAL_MOVE = "\nPress Return to move to this card."
  28
  29 TITLES = {
  30     ACT: "Choose an Action",
  31     EXAMINE: "Select a Card",
  32 }
  33
  34
  35 class InfoAreaWidget(Widget):
  36     """
  37     Widget for the game board information area.
  38     """
  39     def __init__(self, pos, state):
  40         super(InfoAreaWidget, self).__init__(pos, INFO_SIZE)
  41         self.state = state
  42         self.chosen = None
  43         self.card_position = state.player.position
  44         self.set_position(state.player.position)
  45
  46     def prepare(self):
  47         if self.state.gameboard.player_mode == ACT:
  48             self.set_position(self.state.player.position)
  49         self.surface = pygame.surface.Surface(INFO_SIZE)
  50         self.surface.fill((0, 0, 0))
  51         # Extract actions and such from the card
  52         title = TextWidget(
  53             (INFO_LEFT_PADDING, 0), TITLES[self.state.gameboard.player_mode],
  54             colour=PALETTE.WHITE)
  55         title.render(self.surface)
  56         y_offset = title.surface.get_rect().height + 8
  57
  58         # TODO: Make this better.
  59         bits_text = ''.join('1' if bit in self.card.bitwise_operand else '0'
  60                             for bit in reversed(range(8)))
  61         if self.card.bitwise_operand:
  62             bits_text = '%s %s' % (
  63                 bits_text, bit_glyphs(self.card.bitwise_operand))
  64         card_bits = TextBoxWidget((INFO_LEFT_PADDING, y_offset), bits_text,
  65                                   box_width=INFO_SIZE[0],
  66                                   colour=PALETTE.LIGHT_TURQUOISE,
  67                                   bg_colour=PALETTE.BLACK)
  68         card_bits.render(self.surface)
  69         y_offset += card_bits.surface.get_rect().height + 8
  70
  71         for choice, action in enumerate(self.card.actions):
  72             y_offset = self.prepare_action(choice, action, y_offset)
  73         # We cheat horribly for layout reasons
  74         hint_text = HINTS[self.state.gameboard.player_mode]
  75         if self.state.gameboard.player_mode == EXAMINE:
  76             if self.card_position in self.state.player.legal_moves():
  77                 hint_text += HINT_LEGAL_MOVE
  78
  79         hint = TextBoxWidget((4, 0), hint_text, padding=2,
  80                              box_width=(INFO_SIZE[0] - 4) // EIGHT_BIT_SCALE)
  81         hint.prepare()
  82         y_offset = (
  83             INFO_SIZE[1] - hint.surface.get_rect().height - INFO_LEFT_PADDING
  84             - 2)
  85         self.surface.blit(hint.surface, (INFO_LEFT_PADDING, y_offset))
  86
  87     def prepare_action(self, choice, action, y_offset):
  88         x_offset = INFO_LEFT_PADDING
  89         glyphs_x_offset = 0
  90         glyphs_y_offset = y_offset
  91         y_offset += ACTION_TEXT_OFFSET
  92         action_viable = action.check_available(self.state.player)
  93         text_colour = PALETTE.BLACK if action_viable else PALETTE.GREY
  94
  95         text = TextBoxWidget(
  96             (x_offset, y_offset), action.get_text(self.card),
  97             box_width=(INFO_SIZE[0] - 16) // EIGHT_BIT_SCALE,
  98             fontsize=28, colour=text_colour)
  99         text.render(self.surface)
 100
 101         border_colour = None
 102         if choice == self.chosen:
 103             border_colour = PALETTE.GREEN if action_viable else PALETTE.ORANGE
 104         if border_colour:
 105             bottom = y_offset + text.surface.get_rect().height
 106             right = text.surface.get_rect().width + x_offset
 107             pygame.draw.lines(self.surface, border_colour, True,
 108                               [(x_offset, y_offset), (right, y_offset),
 109                                (right, bottom), (x_offset, bottom)], 4)
 110
 111         if action.required_bits:
 112             img_name = BIT_MAP[action.required_bits].replace(
 113                 '.png', '_small.png')
 114             img = resources.get_image(img_name,
 115                                       transforms=(EIGHT_BIT,))
 116             self.surface.blit(img, (glyphs_x_offset, glyphs_y_offset))
 117             glyphs_x_offset += img.get_width() + 4
 118         else:
 119             glyphs_x_offset = INFO_LEFT_PADDING
 120
 121         for glyph in action.GLYPHS:
 122             img = resources.get_image(
 123                 glyph, transforms=(EIGHT_BIT, blender(PALETTE.GREY)))
 124             self.surface.blit(img, (glyphs_x_offset, glyphs_y_offset - 4))
 125             glyphs_x_offset += img.get_width()
 126         if action.MSB_GLYPH is not None:
 127             img = resources.get_image(
 128                 action.MSB_GLYPH,
 129                 transforms=(EIGHT_BIT, blender(PALETTE.LIGHT_VIOLET)))
 130             self.surface.blit(img, (glyphs_x_offset, glyphs_y_offset - 4))
 131
 132         return y_offset + text.surface.get_rect().height + 16
 133
 134     def set_position(self, position):
 135         self.card_position = position
 136         self.card = self.state.board_locations[self.card_position]
 137         if self.state.gameboard.player_mode == ACT:
 138             if self.chosen is None:
 139                 self.chosen = 0
 140         else:
 141             self.chosen = None
 142
 143     def draw(self, surface):
 144         surface.blit(self.surface, self.pos)
 145
 146     def next_action(self, viable_only=False, step=1):
 147         num_actions = len(self.card.actions)
 148         if num_actions == 0:
 149             return
 150         player = self.state.player
 151         chosen = self.chosen
 152         for i in range(num_actions - 1):
 153             # loop through each action at most once.
 154             chosen = (chosen + step) % num_actions
 155             action = self.card.actions[chosen]
 156             if not viable_only or action.check_available(player):
 157                 sound.play_sound('zoop.ogg', volume=0.05)
 158                 self.chosen = chosen
 159
 160     def prev_action(self, viable_only=False):
 161         return self.next_action(viable_only=viable_only, step=-1)
 162
 163     def try_perform_action(self):
 164         player = self.state.player
 165         action = self.card.actions[self.chosen]
 166         if not action.check_available(player):
 167             sound.play_sound('error.ogg')
 168         else:
 169             sound.play_sound('chirp.ogg', volume=0.5)
 170             action.perform_action(self.state.gameboard, self.card)
 171             self.state.gameboard.card_used(player.position)
 172             self.state.gameboard.change_mode(EXAMINE)
 173             self.set_position(player.position)
 174
 175     def handle_event(self, ev):
 176         if self.state.gameboard.player_mode == EXAMINE:
 177             return super(InfoAreaWidget, self).handle_event(ev)
 178         if ev.type == pgl.KEYDOWN:
 179             if ev.key in KEYS.SELECT:
 180                 self.try_perform_action()
 181                 return finish_event()
 182             if ev.key in KEYS.UP:
 183                 self.next_action()
 184                 return finish_event()
 185             if ev.key in KEYS.DOWN:
 186                 self.prev_action()
 187                 return finish_event()
 188             if ev.key in KEYS.SWITCH:
 189                 self.next_action(viable_only=True)
 190                 return finish_event()
 191         return super(InfoAreaWidget, self).handle_event(ev)