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, MOVE, ACT
   8 from naja.events import InvalidateTheWorld
   9 from naja.resources import resources
  10 from naja.resources.mutators import EIGHT_BIT
  11
  12 from naja.widgets.base import Widget
  13 from naja.widgets.tile import BIT_MAP
  14 from naja.widgets.text import TextBoxWidget, TextWidget
  15
  16
  17 HINTS = {
  18         MOVE: "Move using the arrow keys.\nPress SPACE to stay in place",
  19         ACT: "Choose an action using the Up/Down keys.\n"
  20              "Press Return to execute the action.",
  21         }
  22
  23 TITLES = {
  24         MOVE: "Move the Robot",
  25         ACT: "Choose an Action",
  26         }
  27
  28
  29 class InfoAreaWidget(Widget):
  30     """
  31     Widget for the game board information area.
  32     """
  33     def __init__(self, pos, state):
  34         super(InfoAreaWidget, self).__init__(pos, INFO_SIZE)
  35         self.card = None
  36         self.state = state
  37         self.chosen = 0
  38
  39     def prepare(self):
  40         self.surface = pygame.surface.Surface(INFO_SIZE)
  41         self.surface.fill((0, 0, 0))
  42         # Quick hack for testing
  43         self.card = self.state.board_locations[self.state.player.position]
  44         # Extract actions and such from the card
  45         title = TextWidget((0, 0), TITLES[self.state.gameboard.player_mode],
  46                            colour=(255, 255, 255))
  47         title.render(self.surface)
  48         y_offset = title.surface.get_rect().height + 8
  49         for choice, action in enumerate(self.card.actions):
  50             if action.required_bits:
  51                 img_name = BIT_MAP[action.required_bits].replace('.png', '_small.png')
  52                 img = resources.get_image(img_name,
  53                                           transforms=(EIGHT_BIT,))
  54                 self.surface.blit(img, (0, y_offset))
  55                 y_offset += 8
  56             text = TextBoxWidget((12, y_offset), action.TEXT,
  57                                  box_width=(INFO_SIZE[0] - 12) // EIGHT_BIT_SCALE,
  58                                  fontsize=28)
  59             text.render(self.surface)
  60             if choice == self.chosen:
  61                 colour = (255, 255, 0, 128)
  62                 bottom = y_offset + text.surface.get_rect().height
  63                 right = text.surface.get_rect().width + 12
  64                 pygame.draw.lines(self.surface, colour, True,
  65                                   [(12, y_offset), (right, y_offset),
  66                                    (right, bottom), (12, bottom)], 4)
  67             y_offset += text.surface.get_rect().height + 16
  68         # We cheat horribly for layout reasons
  69         hint = TextBoxWidget((0, 0), HINTS[self.state.gameboard.player_mode],
  70                              box_width = INFO_SIZE[0] // EIGHT_BIT_SCALE)
  71         hint.prepare()
  72         y_offset = INFO_SIZE[1] - hint.surface.get_rect().height
  73         self.surface.blit(hint.surface, (0, y_offset))
  74
  75     def set_card(self, card):
  76         self.card = card
  77
  78     def draw(self, surface):
  79         surface.blit(self.surface, self.pos)
  80
  81     def handle_event(self, ev):
  82         if self.state.gameboard.player_mode == MOVE:
  83             return super(InfoAreaWidget, self).handle_event(ev)
  84         if ev.type == pgl.KEYDOWN:
  85             if ev.key in (pgl.K_RETURN, pgl.K_KP_ENTER):
  86                 self.card.actions[self.chosen].perform_action(
  87                     self.state.gameboard, self.card)
  88                 self.state.gameboard.change_mode()
  89                 InvalidateTheWorld.post()
  90                 return True
  91             if ev.key in (pgl.K_UP, pgl.K_w, pgl.K_COMMA):
  92                 if self.chosen > 0:
  93                     self.chosen -= 1
  94                     InvalidateTheWorld.post()
  95                     return True
  96             if ev.key in (pgl.K_DOWN, pgl.K_s, pgl.K_o):
  97                 if self.chosen + 1 < len(self.card.actions):
  98                     self.chosen += 1
  99                     InvalidateTheWorld.post()
 100                     return True
 101         return super(InfoAreaWidget, self).handle_event(ev)