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.introduction import IntroductionScene
  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         intro = TextWidget(
  38             (x_offset, y_offset), 'Introduction', colour=PALETTE.WHITE,
  39             centre=True)
  40         intro.add_callback('click', self.scene_callback(IntroductionScene))
  41         selector.add(intro)
  42
  43         y_offset += y_diff
  44         resume = TextWidget(
  45             (x_offset, y_offset), 'Resume Game', colour=PALETTE.WHITE,
  46             unselectable_colour=PALETTE.GREY, centre=True)
  47         resume.add_callback('click', self.scene_callback(GameScene))
  48         resume.set_selectable_callback(lambda: state is not None)
  49         selector.add(resume)
  50
  51         if state is None:
  52             selector.position = 2
  53         else:
  54             selector.position = 1
  55
  56         y_offset += y_diff
  57         new = TextWidget(
  58             (x_offset, y_offset), 'New Random Game', colour=PALETTE.WHITE,
  59             centre=True)
  60         new.add_callback('click', self.scene_callback(NewGameScene))
  61         selector.add(new)
  62
  63         y_offset += y_diff
  64         new = TextWidget(
  65             (x_offset, y_offset), 'New Puzzle', colour=PALETTE.WHITE,
  66             centre=True)
  67         new.add_callback('click', self.scene_callback(PuzzleListScene))
  68         selector.add(new)
  69
  70         y_offset += y_diff
  71         load = TextWidget(
  72             (x_offset, y_offset), 'Load Game', colour=PALETTE.WHITE,
  73             centre=True)
  74         load.add_callback('click', self.scene_callback(LoadGameScene))
  75         selector.add(load)
  76
  77         y_offset += y_diff
  78         save = TextWidget(
  79             (x_offset, y_offset), 'Save Game', colour=PALETTE.WHITE,
  80             unselectable_colour=PALETTE.GREY, centre=True)
  81         save.add_callback('click', self.scene_callback(SaveGameScene))
  82         save.set_selectable_callback(lambda: state is not None)
  83         selector.add(save)
  84
  85         y_offset += y_diff
  86         credits = TextWidget(
  87             (x_offset, y_offset), 'Credits', colour=PALETTE.WHITE,
  88             centre=True)
  89         credits.add_callback('click', self.scene_callback(CreditsScene))
  90         selector.add(credits)
  91
  92         y_offset += y_diff
  93         quit = TextWidget((x_offset, y_offset), 'Quit', colour=PALETTE.WHITE,
  94                           centre=True)
  95         quit.add_callback('click', lambda event: QuitGameEvent.post())
  96         selector.add(quit)
  97
  98         self.konami = []
  99         if not sound.playing_music:
 100             sound.play_music('scape.ogg', 0.25)
 101
 102     def scene_callback(self, scene_class):
 103         return lambda event: SceneChangeEvent.post(scene_class)
 104
 105     def handle_event(self, ev):
 106         if ev.type == pgl.KEYDOWN and self.konami is not None:
 107             if ev.key in KEYS.KONAMI:
 108                 self.konami.append(ev.key)
 109                 if self.konami == KONAMI_CODE:
 110                     options['cheat_enabled'] = True
 111                     print "Cheats enabled."
 112                     print "  Try hitting some number keys."
 113                     self.konami = None
 114                 elif self.konami != KONAMI_CODE[:len(self.konami)]:
 115                     self.konami = None
 116         return super(MenuScene, self).handle_event(ev)
 117
 118     def handle_scene_event(self, ev):
 119         if ev.type == pgl.KEYDOWN:
 120             if ev.key in KEYS.QUIT:
 121                 QuitGameEvent.post()
 122                 return