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