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("Manage Roaches", action=self.change_to_roaches),
  24             TextButton("Credits", action=self.change_to_credits),
  25             TextButton("Quit", action=self.quit),
  26         ]
  27         for i, item in enumerate(self._menu):
  28             item.pos = (300, 300 + (i * 100))
  29             self.actors.add(item)
  30         self._nav.connect(
  31             self._menu, [keys.DOWN, keys.RIGHT], [keys.UP, keys.LEFT],
  32             wrap=True)
  33         self._nav.current.select()
  34
  35     def change_to_level(self):
  36         from .level import LevelScene
  37         return [ChangeSceneEvent(LevelScene('level1'))]
  38
  39     def change_to_viewer(self):
  40         from .viewlevel import ViewLevelScene
  41         return [ChangeSceneEvent(ViewLevelScene('map'))]
  42
  43     def change_to_roaches(self):
  44         from .roaches import RoachesScene
  45         return [ChangeSceneEvent(RoachesScene())]
  46
  47     def change_to_credits(self):
  48         from .credits import CreditsScene
  49         return [ChangeSceneEvent(CreditsScene())]
  50
  51     def quit(self):
  52         return [QuitEvent()]
  53
  54     def on_key_down(self, key, mod, unicode):
  55         if key == keys.RETURN:
  56             current = self._nav.current
  57             if current is not None:
  58                 return current.action()
  59         else:
  60             prev, current = self._nav.follow(key)
  61             if prev is not None:
  62                 prev.deselect()
  63             if current is not None:
  64                 current.select()