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, WorldEvent, QuitEvent
   7
   8
   9 class MenuScene(Scene):
  10     """ Main menu scene. """
  11
  12     def __init__(self):
  13         super().__init__()
  14         self._title = self.actors.add(TextButton("Main Menu"))
  15         self._title.pos = (300, 100)
  16         self._nav = ActorNavigator()
  17         self._menu = [
  18             TextButton("Play", action=self.change_to_level),
  19             TextButton("View Last Generated Level",
  20                        action=self.change_to_viewer),
  21             TextButton("Manage Roaches",
  22                        action=self.change_to_roach_management),
  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, 200 + (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 GameLevelScene
  36         return [ChangeSceneEvent(GameLevelScene())]
  37
  38     def change_to_viewer(self):
  39         from .viewlevel import ViewLevelScene
  40         return [
  41             WorldEvent("set", {"level.name": "map"}),
  42             ChangeSceneEvent(ViewLevelScene())
  43         ]
  44
  45     def change_to_roach_management(self):
  46         from .roach_management import RoachesScene
  47         return [ChangeSceneEvent(RoachesScene())]
  48
  49     def change_to_credits(self):
  50         from .credits import CreditsScene
  51         return [ChangeSceneEvent(CreditsScene())]
  52
  53     def quit(self):
  54         return [QuitEvent()]
  55
  56     def on_key_down(self, key, mod, unicode):
  57         if key == keys.RETURN:
  58             current = self._nav.current
  59             if current is not None:
  60                 return current.action()
  61         else:
  62             prev, current = self._nav.follow(key)
  63             if prev is not None:
  64                 prev.deselect()
  65             if current is not None:
  66                 current.select()