naja/scenes/menu.py

   1 """
   2 Main menu scene.
   3 """
   4
   5 import pygame.locals as pgl
   6
   7 from naja.constants import KEYS, PALETTE, KONAMI_CODE
   8 from naja.events import SceneChangeEvent, QuitGameEvent
   9 from naja.options import options
  10 from naja.scenes.scene import Scene
  11 from naja.scenes.credits import CreditsScene
  12 from naja.scenes.game import GameScene
  13 from naja.scenes.howto import HowtoScene
  14 from naja.scenes.load_save import LoadGameScene, SaveGameScene
  15 from naja.scenes.new_game import NewGameScene
  16 from naja.scenes.puzzlelist import PuzzleListScene
  17 from naja.widgets.selector import SelectorWidget
  18 from naja.widgets.text import TextWidget
  19 from naja.widgets.image_box import ImageBox
  20 from naja.sound import sound
  21
  22
  23 class MenuScene(Scene):
  24     def __init__(self, state):
  25         super(MenuScene, self).__init__(state)
  26
  27         background = ImageBox(
  28             (0, 0), "screens/splash.png")
  29         self.add(background)
  30
  31         selector = SelectorWidget()
  32         self.add(selector)
  33         y_offset, y_diff = 270, 36
  34         x_offset = 400
  35
  36         y_offset += y_diff
  37         resume = TextWidget(
  38             (x_offset, y_offset), 'Resume Game', colour=PALETTE.WHITE,
  39             unselectable_colour=PALETTE.GREY, centre=True)
  40         resume.add_callback('click', self.scene_callback(GameScene))
  41         resume.set_selectable_callback(lambda: state is not None)
  42         selector.add(resume)
  43
  44         y_offset += y_diff
  45         new = TextWidget(
  46             (x_offset, y_offset), 'New Random Game', colour=PALETTE.WHITE,
  47             centre=True)
  48         new.add_callback('click', self.scene_callback(NewGameScene))
  49         selector.add(new)
  50
  51         y_offset += y_diff
  52         new = TextWidget(
  53             (x_offset, y_offset), 'New Puzzle', colour=PALETTE.WHITE,
  54             centre=True)
  55         new.add_callback('click', self.scene_callback(PuzzleListScene))
  56         selector.add(new)
  57
  58         y_offset += y_diff
  59         load = TextWidget(
  60             (x_offset, y_offset), 'Load Game', colour=PALETTE.WHITE,
  61             centre=True)
  62         load.add_callback('click', self.scene_callback(LoadGameScene))
  63         selector.add(load)
  64
  65         y_offset += y_diff
  66         save = TextWidget(
  67             (x_offset, y_offset), 'Save Game', colour=PALETTE.WHITE,
  68             unselectable_colour=PALETTE.GREY, centre=True)
  69         save.add_callback('click', self.scene_callback(SaveGameScene))
  70         save.set_selectable_callback(lambda: state is not None)
  71         selector.add(save)
  72
  73         y_offset += y_diff
  74         howto = TextWidget(
  75             (x_offset, y_offset), 'How To Play', colour=PALETTE.WHITE,
  76             centre=True)
  77         howto.add_callback('click', self.scene_callback(HowtoScene))
  78         selector.add(howto)
  79
  80         y_offset += y_diff
  81         credits = TextWidget(
  82             (x_offset, y_offset), 'Credits', colour=PALETTE.WHITE,
  83             centre=True)
  84         credits.add_callback('click', self.scene_callback(CreditsScene))
  85         selector.add(credits)
  86
  87         y_offset += y_diff
  88         quit = TextWidget((x_offset, y_offset), 'Quit', colour=PALETTE.WHITE,
  89                           centre=True)
  90         quit.add_callback('click', lambda event: QuitGameEvent.post())
  91         selector.add(quit)
  92
  93         self.konami = []
  94         if not sound.playing_music:
  95             sound.play_music('scape.ogg', 0.25)
  96
  97     def scene_callback(self, scene_class):
  98         return lambda event: SceneChangeEvent.post(scene_class)
  99
 100     def handle_event(self, ev):
 101         if ev.type == pgl.KEYDOWN and self.konami is not None:
 102             if ev.key in KEYS.KONAMI:
 103                 self.konami.append(ev.key)
 104                 if self.konami == KONAMI_CODE:
 105                     options['cheat_enabled'] = True
 106                     print "Cheats enabled."
 107                     print "  Try hitting some number keys."
 108                     self.konami = None
 109                 elif self.konami != KONAMI_CODE[:len(self.konami)]:
 110                     self.konami = None
 111         return super(MenuScene, self).handle_event(ev)
 112
 113     def handle_scene_event(self, ev):
 114         if ev.type == pgl.KEYDOWN:
 115             if ev.key in KEYS.QUIT:
 116                 QuitGameEvent.post()
 117                 return