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.widgets.selector import SelectorWidget
  17 from naja.widgets.text import TextWidget
  18 from naja.widgets.image_box import ImageBox
  19
  20
  21 class MenuScene(Scene):
  22     def __init__(self, state):
  23         super(MenuScene, self).__init__(state)
  24
  25         background = ImageBox(
  26             (0, 0), "screens/splash.png")
  27         self.add(background)
  28
  29         selector = SelectorWidget()
  30         self.add(selector)
  31         y_offset = 0
  32
  33         y_offset += 50
  34         resume = TextWidget(
  35             (100, y_offset), 'Resume Game', colour=PALETTE.WHITE,
  36             unselectable_colour=PALETTE.GREY)
  37         resume.add_callback('click', self.scene_callback(GameScene))
  38         resume.set_selectable_callback(lambda: state is not None)
  39         selector.add(resume)
  40
  41         y_offset += 50
  42         new = TextWidget((100, y_offset), 'New Game', colour=PALETTE.WHITE)
  43         new.add_callback('click', self.scene_callback(NewGameScene))
  44         selector.add(new)
  45
  46         y_offset += 50
  47         load = TextWidget((100, y_offset), 'Load', colour=PALETTE.WHITE)
  48         load.add_callback('click', self.scene_callback(LoadGameScene))
  49         selector.add(load)
  50
  51         y_offset += 50
  52         save = TextWidget(
  53             (100, y_offset), 'Save', colour=PALETTE.WHITE,
  54             unselectable_colour=PALETTE.GREY)
  55         save.add_callback('click', self.scene_callback(SaveGameScene))
  56         save.set_selectable_callback(lambda: state is not None)
  57         selector.add(save)
  58
  59         y_offset += 50
  60         howto = TextWidget(
  61             (100, y_offset), 'How To Play', colour=PALETTE.WHITE)
  62         howto.add_callback('click', self.scene_callback(HowtoScene))
  63         selector.add(howto)
  64
  65         y_offset += 50
  66         credits = TextWidget((100, y_offset), 'Credits', colour=PALETTE.WHITE)
  67         credits.add_callback('click', self.scene_callback(CreditsScene))
  68         selector.add(credits)
  69
  70         y_offset += 50
  71         quit = TextWidget((100, y_offset), 'Quit', colour=PALETTE.WHITE)
  72         quit.add_callback('click', lambda event: QuitGameEvent.post())
  73         selector.add(quit)
  74
  75         self.konami = []
  76
  77     def scene_callback(self, scene_class):
  78         return lambda event: SceneChangeEvent.post(scene_class)
  79
  80     def handle_event(self, ev):
  81         if ev.type == pgl.KEYDOWN and self.konami is not None:
  82             if ev.key in KEYS.KONAMI:
  83                 self.konami.append(ev.key)
  84                 if self.konami == KONAMI_CODE:
  85                     options['cheat_enabled'] = True
  86                     print "Cheats enabled."
  87                     print "  Try hitting some number keys."
  88                     self.konami = None
  89                 elif self.konami != KONAMI_CODE[:len(self.konami)]:
  90                     self.konami = None
  91         return super(MenuScene, self).handle_event(ev)
  92
  93     def handle_scene_event(self, ev):
  94         if ev.type == pgl.KEYDOWN:
  95             if ev.key in KEYS.QUIT:
  96                 QuitGameEvent.post()
  97                 return