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, ACT, KEYS, EXAMINE, PALETTE,
   9     ACTION_TEXT_OFFSET, INFO_LEFT_PADDING,
  10     INFO_RIGHT_PADDING, BIT_SIZE)
  11 from naja.events import finish_event
  12 from naja.resources import resources
  13 from naja.resources.mutators import EIGHT_BIT, blender
  14 from naja.sound import sound
  15 from naja.utils import bit_glyphs
  16
  17 from naja.widgets.base import Widget
  18 from naja.widgets.tile import BIT_MAP
  19 from naja.widgets.text import TextBoxWidget, TextWidget
  20
  21
  22 HINTS = {
  23     ACT: ("Choose an action using the Up/Down keys.\n"
  24           "Press Return to execute the action."),
  25     EXAMINE: "Select a card to examine using the arrow keys.",
  26 }
  27
  28 HINT_LEGAL_MOVE = "\nPress Return to move to this card."
  29
  30 TITLES = {
  31     ACT: "Choose an Action",
  32     EXAMINE: "Select a Card",
  33 }
  34
  35
  36 class InfoAreaWidget(Widget):
  37     """
  38     Widget for the game board information area.
  39     """
  40     def __init__(self, pos, state):
  41         super(InfoAreaWidget, self).__init__(pos, INFO_SIZE)
  42         self.state = state
  43         self.chosen = None
  44         self.card_position = state.player.position
  45         self.set_position(state.player.position)
  46
  47     def prepare(self):
  48         if self.state.gameboard.player_mode == ACT:
  49             self.set_position(self.state.player.position)
  50         self.surface = pygame.surface.Surface(INFO_SIZE)
  51         self.surface.fill((0, 0, 0))
  52
  53         box_width = INFO_SIZE[0] - INFO_LEFT_PADDING - INFO_RIGHT_PADDING
  54         y_offset = 0
  55         pos = lambda: (INFO_LEFT_PADDING, y_offset)
  56
  57         # Top title
  58         title = TextWidget(
  59             pos(), TITLES[self.state.gameboard.player_mode],
  60             colour=PALETTE.WHITE)
  61         title.render(self.surface)
  62         y_offset += title.surface.get_rect().height - 4
  63
  64         # Bits
  65         bits_text = ''.join('1' if bit in self.card.bitwise_operand else '0'
  66                             for bit in reversed(range(8)))
  67         if self.card.bitwise_operand:
  68             bits_text = '%s %s' % (
  69                 bits_text, bit_glyphs(self.card.bitwise_operand))
  70         card_bits = TextBoxWidget(
  71             pos(), bits_text, box_width=box_width,
  72             colour=PALETTE.LIGHT_TURQUOISE, bg_colour=PALETTE.BLACK)
  73         card_bits.render(self.surface)
  74         y_offset += card_bits.surface.get_rect().height + 4
  75
  76         # Actions
  77         for choice, action in enumerate(self.card.actions):
  78             y_offset = self.prepare_action(choice, action, y_offset, box_width)
  79
  80         # Hint text
  81         hint_text = HINTS[self.state.gameboard.player_mode]
  82         if self.state.gameboard.player_mode == EXAMINE:
  83             if self.card_position in self.state.player.legal_moves():
  84                 hint_text += HINT_LEGAL_MOVE
  85
  86         hint = TextBoxWidget(
  87             (0, 0), hint_text, padding=4,
  88             box_width=box_width,
  89             border=2, border_colour=PALETTE.GREY)
  90         hint.prepare()
  91         y_offset = (INFO_SIZE[1] - hint.surface.get_rect().height
  92                     - BIT_SIZE[1] - 2)
  93         self.surface.blit(hint.surface, pos())
  94
  95         # Game mode (puzzle, easy, standard, hard, etc ...)
  96         game_mode = TextBoxWidget(
  97             (0, 0), "UNKNOWN", padding=4, centre=True,
  98             colour=PALETTE.WHITE, border=2,
  99             bg_colour=PALETTE.BLACK, border_colour=PALETTE.BLUE,
 100             box_width=box_width)
 101         game_mode.prepare()
 102
 103         y_offset = (INFO_SIZE[1] - BIT_SIZE[1] + 12)
 104         self.surface.blit(game_mode.surface, pos())
 105
 106     def prepare_action(self, choice, action, y_offset, box_width):
 107         x_offset = INFO_LEFT_PADDING
 108         glyphs_x_offset = 0
 109         glyphs_y_offset = y_offset
 110         y_offset += ACTION_TEXT_OFFSET
 111         action_viable = action.check_available(self.state.player)
 112         text_colour = PALETTE.BLACK if action_viable else PALETTE.GREY
 113
 114         text = TextBoxWidget(
 115             (x_offset, y_offset), action.get_text(self.card),
 116             box_width=box_width,
 117             fontsize=28, colour=text_colour,
 118             border=2, border_colour=PALETTE.GREY)
 119         text.render(self.surface)
 120
 121         border_colour = None
 122         if choice == self.chosen:
 123             border_colour = PALETTE.GREEN if action_viable else PALETTE.ORANGE
 124         if border_colour:
 125             bottom = y_offset + text.surface.get_rect().height
 126             right = text.surface.get_rect().width + x_offset
 127             pygame.draw.lines(self.surface, border_colour, True,
 128                               [(x_offset, y_offset), (right, y_offset),
 129                                (right, bottom), (x_offset, bottom)], 4)
 130
 131         if action.required_bits:
 132             img_name = BIT_MAP[action.required_bits].replace(
 133                 '.png', '_small.png')
 134             img = resources.get_image(img_name,
 135                                       transforms=(EIGHT_BIT,))
 136             self.surface.blit(img, (glyphs_x_offset, glyphs_y_offset))
 137             glyphs_x_offset += img.get_width() + 4
 138         else:
 139             glyphs_x_offset = INFO_LEFT_PADDING
 140
 141         for glyph in action.GLYPHS:
 142             img = resources.get_image(
 143                 glyph, transforms=(EIGHT_BIT, blender(PALETTE.GREY)))
 144             self.surface.blit(img, (glyphs_x_offset, glyphs_y_offset - 4))
 145             glyphs_x_offset += img.get_width()
 146         if action.MSB_GLYPH is not None:
 147             img = resources.get_image(
 148                 action.MSB_GLYPH,
 149                 transforms=(EIGHT_BIT, blender(PALETTE.LIGHT_VIOLET)))
 150             self.surface.blit(img, (glyphs_x_offset, glyphs_y_offset - 4))
 151
 152         return y_offset + text.surface.get_rect().height + 16
 153
 154     def set_position(self, position):
 155         self.card_position = position
 156         self.card = self.state.board_locations[self.card_position]
 157         if self.state.gameboard.player_mode == ACT:
 158             if self.chosen is None:
 159                 self.chosen = 0
 160         else:
 161             self.chosen = None
 162
 163     def draw(self, surface):
 164         surface.blit(self.surface, self.pos)
 165
 166     def next_action(self, viable_only=False, step=1):
 167         num_actions = len(self.card.actions)
 168         if num_actions == 0:
 169             return
 170         player = self.state.player
 171         chosen = self.chosen
 172         for i in range(num_actions - 1):
 173             # loop through each action at most once.
 174             chosen = (chosen + step) % num_actions
 175             action = self.card.actions[chosen]
 176             if not viable_only or action.check_available(player):
 177                 sound.play_sound('zoop.ogg', volume=0.05)
 178                 self.chosen = chosen
 179
 180     def prev_action(self, viable_only=False):
 181         return self.next_action(viable_only=viable_only, step=-1)
 182
 183     def try_perform_action(self):
 184         player = self.state.player
 185         action = self.card.actions[self.chosen]
 186         if not action.check_available(player):
 187             sound.play_sound('error.ogg')
 188         else:
 189             sound.play_sound('chirp.ogg', volume=0.5)
 190             action.perform_action(self.state.gameboard, self.card)
 191             self.state.gameboard.card_used(player.position)
 192             self.state.gameboard.change_mode(EXAMINE)
 193             self.set_position(player.position)
 194
 195     def handle_event(self, ev):
 196         if self.state.gameboard.player_mode == EXAMINE:
 197             return super(InfoAreaWidget, self).handle_event(ev)
 198         if ev.type == pgl.KEYDOWN:
 199             if ev.key in KEYS.SELECT:
 200                 self.try_perform_action()
 201                 return finish_event()
 202             if ev.key in KEYS.UP:
 203                 self.next_action()
 204                 return finish_event()
 205             if ev.key in KEYS.DOWN:
 206                 self.prev_action()
 207                 return finish_event()
 208             if ev.key in KEYS.SWITCH:
 209                 self.next_action(viable_only=True)
 210                 return finish_event()
 211         return super(InfoAreaWidget, self).handle_event(ev)