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, KEYS, PALETTE,
   9     ACTION_TEXT_OFFSET, INFO_LEFT_PADDING,
  10     INFO_RIGHT_PADDING, BIT_SIZE, BITS)
  11 from naja.events import InvalidateTheWorld, 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, Flashlight
  16
  17 from naja.widgets.base import Widget
  18 from naja.widgets.tile import BIT_MAP
  19 from naja.widgets.text import TextBoxWidget
  20 from naja import constants
  21
  22
  23 HINTS = [
  24     "Browse the tiles with {NORTH,SOUTH,EAST,WEST} keys.",
  25     "Switch actions using TAB.",
  26 ]
  27
  28 HINT_LEGAL_MOVE = "\nPress {RETURN} to move and execute the action."
  29
  30
  31 class InfoAreaWidget(Widget):
  32     """
  33     Widget for the game board information area.
  34     """
  35     def __init__(self, pos, state):
  36         super(InfoAreaWidget, self).__init__(pos, INFO_SIZE)
  37         self.state = state
  38         self.set_position(state.player.position, legal=True)
  39         self.flash_light = Flashlight(constants.FPS // 2)
  40
  41     def prepare(self):
  42         self.surface = pygame.surface.Surface(INFO_SIZE)
  43         self.surface.fill((0, 0, 0))
  44
  45         box_width = INFO_SIZE[0] - INFO_LEFT_PADDING - INFO_RIGHT_PADDING
  46         y_offset = 0
  47         pos = lambda: (INFO_LEFT_PADDING, y_offset)
  48
  49         # Bits
  50         y_offset += 12
  51         bits_text = ''.join('1' if bit in self.card.bitwise_operand else '0'
  52                             for bit in reversed(range(8)))
  53         if self.card.bitwise_operand:
  54             bits_text = '%s %s' % (
  55                 bits_text, bit_glyphs(self.card.bitwise_operand))
  56         card_bits = TextBoxWidget(
  57             (0, 0), bits_text, padding=4, centre=True,
  58             colour=PALETTE.WHITE, border=2,
  59             bg_colour=PALETTE.BLACK, border_colour=PALETTE.BLUE,
  60             box_width=box_width)
  61         card_bits.prepare()
  62         self.surface.blit(card_bits.surface, pos())
  63         y_offset += card_bits.surface.get_rect().height + 12
  64
  65         # Actions
  66         for choice, action in enumerate(self.card.actions):
  67             y_offset = self.prepare_action(choice, action, y_offset, box_width)
  68
  69         # Hint text
  70         hint_text = " ".join(HINTS)
  71         if self.card_position in self.state.player.legal_moves():
  72             hint_text += HINT_LEGAL_MOVE
  73
  74         hint = TextBoxWidget(
  75             (0, 0), hint_text, padding=4,
  76             colour=PALETTE.WHITE, border=2,
  77             bg_colour=PALETTE.BLACK, border_colour=PALETTE.BLUE,
  78             box_width=box_width)
  79         hint.prepare()
  80         y_offset = (INFO_SIZE[1] - hint.surface.get_rect().height
  81                     - BIT_SIZE[1] - 2)
  82         self.surface.blit(hint.surface, pos())
  83
  84         # Game mode (puzzle, easy, standard, hard, etc ...)
  85         game_mode = TextBoxWidget(
  86             (0, 0), self.mode_hint(), padding=4, centre=True,
  87             colour=PALETTE.WHITE, border=2,
  88             bg_colour=PALETTE.BLACK, border_colour=PALETTE.BLUE,
  89             box_width=box_width)
  90         game_mode.prepare()
  91
  92         y_offset = (INFO_SIZE[1] - BIT_SIZE[1] + 12)
  93         self.surface.blit(game_mode.surface, pos())
  94
  95     def mode_hint(self):
  96         gameboard = self.state.gameboard
  97         if gameboard.puzzle:
  98             return "PUZZLE"
  99         return {
 100             0: "DEATH", 1: "NINTENDO HARD",
 101             2: "VERY HARD", 3: "HARD",
 102             4: "STANDARD", 5: "EASY",
 103         }.get(gameboard.max_health, "UNKNOWN")
 104
 105     def prepare_action(self, choice, action, y_offset, box_width):
 106         x_offset = INFO_LEFT_PADDING
 107         glyphs_x_offset = 2
 108         glyphs_y_offset = y_offset
 109         y_offset += ACTION_TEXT_OFFSET
 110         action_viable = (
 111             action.check_available(self.state.player) and self.legal)
 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             if self.flash_light.on:
 124                 border_colour = (PALETTE.GREEN if action_viable else
 125                                  PALETTE.ORANGE)
 126             else:
 127                 border_colour = (PALETTE.DARK_GREEN if action_viable else
 128                                  PALETTE.DARK_RED)
 129
 130         if border_colour:
 131             bottom = y_offset + text.surface.get_rect().height
 132             right = text.surface.get_rect().width + x_offset
 133             pygame.draw.lines(self.surface, border_colour, True,
 134                               [(x_offset, y_offset), (right, y_offset),
 135                                (right, bottom), (x_offset, bottom)], 4)
 136
 137         required_keys = action.required_bits & frozenset([
 138             BITS.RED, BITS.GREEN, BITS.BLUE])
 139         if required_keys in BIT_MAP:
 140             img_name = BIT_MAP[required_keys].replace(
 141                 '.png', '_small.png')
 142             img = resources.get_image(img_name,
 143                                       transforms=(EIGHT_BIT,))
 144             self.surface.blit(img, (glyphs_x_offset, glyphs_y_offset))
 145             glyphs_x_offset += img.get_width() + 4
 146         else:
 147             glyphs_x_offset = INFO_LEFT_PADDING
 148
 149         if BITS.MSB in action.required_bits:
 150             msb = resources.get_image('board/msb_lock_decoration.png',
 151                                       transforms=(EIGHT_BIT,))
 152             msb_rect = msb.get_rect()
 153             self.surface.blit(
 154                 msb, (glyphs_x_offset - msb_rect.width - 4, glyphs_y_offset)
 155             )
 156
 157         for glyph in action.get_glyphs():
 158             img = resources.get_image(
 159                 glyph, transforms=(EIGHT_BIT, blender(PALETTE.GREY)))
 160             self.surface.blit(img, (glyphs_x_offset, glyphs_y_offset - 4))
 161             glyphs_x_offset += img.get_width()
 162         if action.get_msb_glyph() is not None:
 163             img = resources.get_image(
 164                 action.get_msb_glyph(),
 165                 transforms=(EIGHT_BIT, blender(PALETTE.LIGHT_VIOLET)))
 166             self.surface.blit(img, (glyphs_x_offset, glyphs_y_offset - 4))
 167
 168         return y_offset + text.surface.get_rect().height + 16
 169
 170     def set_position(self, position, legal):
 171         self.legal = legal
 172         self.card_position = position
 173         self.card = self.state.board_locations[self.card_position]
 174         self.chosen = None
 175         self.next_action(viable_only=True)
 176
 177     def draw(self, surface):
 178         if self.flash_light.tick():
 179             self.prepare()
 180         surface.blit(self.surface, self.pos)
 181
 182     def next_action(self, viable_only=False, step=1):
 183         num_actions = len(self.card.actions)
 184         if num_actions == 0:
 185             return
 186         player = self.state.player
 187         chosen = self.chosen if self.chosen is not None else -step
 188         for i in range(num_actions):
 189             # loop through each action at most once.
 190             chosen = (chosen + step) % num_actions
 191             action = self.card.actions[chosen]
 192             if not viable_only or action.check_available(player):
 193                 sound.play_sound('zoop.ogg', volume=0.05)
 194                 self.chosen = chosen
 195                 break
 196
 197     def prev_action(self, viable_only=False):
 198         return self.next_action(viable_only=viable_only, step=-1)
 199
 200     def try_perform_action(self):
 201         player = self.state.player
 202         if self.chosen is None or not self.legal:
 203             action = None
 204         else:
 205             action = self.card.actions[self.chosen]
 206         if action is None or not action.check_available(player):
 207             sound.play_sound('error.ogg')
 208             return False
 209         else:
 210             sound.play_sound('chirp.ogg', volume=0.5)
 211             player.set_position(self.card_position)
 212             action.perform_action(self.state.gameboard, self.card)
 213             self.state.gameboard.card_used(self.card_position)
 214             self.set_position(self.card_position, legal=True)
 215             return True
 216
 217     def handle_event(self, ev):
 218         if InvalidateTheWorld.matches(ev):
 219             self.flash_light.reset()
 220         if ev.type == pgl.KEYDOWN:
 221             if ev.key in KEYS.SWITCH:
 222                 self.next_action(viable_only=True)
 223                 return finish_event()
 224             elif ev.key in KEYS.SELECT:
 225                 self.try_perform_action()
 226                 return finish_event()
 227         return super(InfoAreaWidget, self).handle_event(ev)