koperkapel/scenes/menu.py

   1 """ Main menu scene. """
   2
   3 from pgzero.constants import keys
   4 from ..actors.buttons import TextButton
   5 from ..actors.navigator import ActorNavigator
   6 from .base import Scene, ChangeSceneEvent, QuitEvent
   7
   8
   9
  10
  11 class MenuScene(Scene):
  12     """ Main menu scene. """
  13
  14     def __init__(self):
  15         super().__init__()
  16         self._title = self.actors.add(TextButton("Main Menu"))
  17         self._title.pos = (300, 200)
  18         self._nav = ActorNavigator()
  19         self._menu = [
  20             TextButton("Play", action=self.change_to_level),
  21             TextButton("View Last Generated Level",
  22                        action=self.change_to_viewer),
  23             TextButton("Credits", action=self.change_to_credits),
  24             TextButton("Quit", action=self.quit),
  25         ]
  26         for i, item in enumerate(self._menu):
  27             item.pos = (300, 300 + (i * 100))
  28             self.actors.add(item)
  29         self._nav.connect(
  30             self._menu, [keys.DOWN, keys.RIGHT], [keys.UP, keys.LEFT],
  31             wrap=True)
  32         self._nav.current.select()
  33
  34     def change_to_level(self):
  35         from .level import LevelScene
  36         return [ChangeSceneEvent(LevelScene('level1'))]
  37
  38     def change_to_viewer(self):
  39         from .viewlevel import ViewLevelScene
  40         return [ChangeSceneEvent(ViewLevelScene('map'))]
  41
  42     def change_to_credits(self):
  43         from .credits import CreditsScene
  44         return [ChangeSceneEvent(CreditsScene())]
  45
  46     def quit(self):
  47         return [QuitEvent()]
  48
  49     def on_key_down(self, key, mod, unicode):
  50         if key == keys.RETURN:
  51             current = self._nav.current
  52             if current is not None:
  53                 return current.action()
  54         else:
  55             prev, current = self._nav.follow(key)
  56             if prev is not None:
  57                 prev.deselect()
  58             if current is not None:
  59                 current.select()