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, KEYS
   8 from naja.events import InvalidateTheWorld, PlayerMoved
   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.state = state
  36         self.set_position(state.player.position)
  37
  38     def prepare(self):
  39         self.surface = pygame.surface.Surface(INFO_SIZE)
  40         self.surface.fill((0, 0, 0))
  41         # Extract actions and such from the card
  42         title = TextWidget((0, 0), TITLES[self.state.gameboard.player_mode],
  43                            colour=(255, 255, 255))
  44         title.render(self.surface)
  45         y_offset = title.surface.get_rect().height + 8
  46         for choice, action in enumerate(self.card.actions):
  47             if action.required_bits:
  48                 img_name = BIT_MAP[action.required_bits].replace('.png', '_small.png')
  49                 img = resources.get_image(img_name,
  50                                           transforms=(EIGHT_BIT,))
  51                 self.surface.blit(img, (0, y_offset))
  52                 y_offset += 8
  53             text = TextBoxWidget((12, y_offset), action.TEXT,
  54                                  box_width=(INFO_SIZE[0] - 12) // EIGHT_BIT_SCALE,
  55                                  fontsize=28)
  56             text.render(self.surface)
  57             if choice == self.chosen:
  58                 colour = (255, 255, 0, 128)
  59                 bottom = y_offset + text.surface.get_rect().height
  60                 right = text.surface.get_rect().width + 12
  61                 pygame.draw.lines(self.surface, colour, True,
  62                                   [(12, y_offset), (right, y_offset),
  63                                    (right, bottom), (12, bottom)], 4)
  64             y_offset += text.surface.get_rect().height + 16
  65         # We cheat horribly for layout reasons
  66         hint = TextBoxWidget((0, 0), HINTS[self.state.gameboard.player_mode],
  67                              box_width = INFO_SIZE[0] // EIGHT_BIT_SCALE)
  68         hint.prepare()
  69         y_offset = INFO_SIZE[1] - hint.surface.get_rect().height
  70         self.surface.blit(hint.surface, (0, y_offset))
  71
  72     def set_position(self, position):
  73         self.card = self.state.board_locations[position]
  74         self.chosen = 0
  75
  76     def draw(self, surface):
  77         surface.blit(self.surface, self.pos)
  78
  79     def handle_event(self, ev):
  80         if PlayerMoved.matches(ev):
  81             self.set_position(self.state.player.position)
  82             return False
  83
  84         if self.state.gameboard.player_mode == MOVE:
  85             return super(InfoAreaWidget, self).handle_event(ev)
  86         if ev.type == pgl.KEYDOWN:
  87             if ev.key in KEYS.SELECT:
  88                 action = self.card.actions[self.chosen]
  89                 if not action.check_available(self.state.gameboard.player):
  90                     print "BEEP!"
  91                     return True
  92                 action.perform_action(self.state.gameboard, self.card)
  93                 self.state.gameboard.change_mode()
  94                 InvalidateTheWorld.post()
  95                 return True
  96             if ev.key in KEYS.UP:
  97                 if self.chosen > 0:
  98                     self.chosen -= 1
  99                     InvalidateTheWorld.post()
 100                     return True
 101             if ev.key in KEYS.DOWN:
 102                 if self.chosen + 1 < len(self.card.actions):
 103                     self.chosen += 1
 104                     InvalidateTheWorld.post()
 105                     return True
 106         return super(InfoAreaWidget, self).handle_event(ev)