erdslangetjie/__main__.py

   1 from erdslangetjie.constants import TILE_SIZE, LEFT, RIGHT, UP, DOWN
   2
   3 from kivy.app import App
   4 from kivy.uix.widget import Widget
   5 from kivy.uix.relativelayout import RelativeLayout
   6 from kivy.uix.scrollview import ScrollView
   7 from kivy.uix.label import Label
   8 from kivy.uix.popup import Popup
   9 from kivy.graphics import Rectangle
  10 from kivy.utils import platform
  11 from kivy.clock import Clock
  12 from kivy.config import Config
  13
  14 from erdslangetjie.level import LevelList
  15 from erdslangetjie.data import load_image, load_sound
  16 from erdslangetjie.player import ThePlayer, Nemesis
  17
  18
  19 if platform() != 'android':
  20     Config.set('graphics', 'width', '1026')
  21     Config.set('graphics', 'height', '760')
  22
  23
  24 class GameWindow(RelativeLayout):
  25
  26     def __init__(self, level_list, app):
  27         self.level_list = level_list
  28         self.level_obj = self.level_list.get_current_level()
  29         self.level_obj.load_tiles()
  30         self.app = app
  31
  32         cols, rows = self.level_obj.get_size()
  33
  34         super(GameWindow, self).__init__(
  35                 size=(cols * TILE_SIZE, rows * TILE_SIZE),
  36                 size_hint=(None, None))
  37
  38         self.mouse_move = False
  39
  40         self.caught = load_sound('sounds/caught.ogg')
  41
  42         self.player = ThePlayer()
  43         self.nemesis = Nemesis(self.app.config)
  44         if not self.level_obj.enter_pos:
  45             raise RuntimeError('No entry point')
  46         self.player_tile = None
  47         self.nemesis_tile = None
  48         self.timer_set = False
  49         self.move_counter = 0
  50
  51         self.player.pos = self.level_obj.enter_pos
  52         self.keyboard = None
  53         self._key_bound = False
  54         self._background = None
  55
  56     def build(self):
  57         if platform() != 'android' and not self.keyboard:
  58             # Very hack'ish
  59             # We need to delay this import until after the window creation by
  60             # the app, else our size config doesn't work
  61             from kivy.core.window import Window
  62             self.keyboard = Window.request_keyboard(self._closed, self)
  63         if self.keyboard and not self._key_bound:
  64             # We remove this binding when we're the not top level widget,
  65             # so re-add it here
  66             self._key_bound = True
  67             self.keyboard.bind(on_key_down=self._on_key_down)
  68         self.clear_widgets()
  69         self._background = Widget(size=self.size, pos=(0, 0))
  70         tiles = self.level_obj.get_tiles()
  71         bx, by = 0, 0
  72         for tile_line in tiles:
  73             bx = 0
  74             for tile in tile_line:
  75                 self.draw_tile((bx, by), tile)
  76                 bx += TILE_SIZE
  77             by += TILE_SIZE
  78         self.add_widget(self._background)
  79
  80     def draw_tile(self, pos, tile):
  81         with self._background.canvas:
  82             Rectangle(pos=pos, size=(TILE_SIZE, TILE_SIZE),
  83                     texture=tile.texture)
  84
  85     def fix_scroll_margins(self):
  86         # We need to call this after app.root is set
  87         self.view = self.app.root
  88         self.x_scroll_margin = float(TILE_SIZE) / self.view.size[0]
  89         self.y_scroll_margin = float(TILE_SIZE) / self.view.size[1]
  90
  91     def draw_player(self):
  92         if self.player_tile:
  93             self.remove_widget(self.player_tile)
  94         sprite_pos = (self.player.pos[0] * TILE_SIZE,
  95                 self.player.pos[1] * TILE_SIZE)
  96         self.player_tile = Widget(size=(TILE_SIZE, TILE_SIZE),
  97                 pos=sprite_pos)
  98         with self.player_tile.canvas:
  99             Rectangle(pos=sprite_pos, size=self.player_tile.size,
 100                     texture=self.player.get_texture())
 101         self.add_widget(self.player_tile)
 102         for offset in [(TILE_SIZE - 1, TILE_SIZE - 1),
 103                 (-TILE_SIZE + 1, TILE_SIZE - 1),
 104                 (TILE_SIZE - 1, -TILE_SIZE + 1),
 105                 (-TILE_SIZE + 1, -TILE_SIZE + 1),
 106                 (0, 2 * TILE_SIZE - 2),
 107                 (-2 * TILE_SIZE + 2, 0),
 108                 (2 * TILE_SIZE - 2, 0),
 109                 (0, -2 * TILE_SIZE + 2),
 110                 (0, 0)]:
 111             # Aim is to ensure a 'neighbourhood' around the player
 112             # is visible if possible
 113             check_point = (sprite_pos[0] + offset[0] + TILE_SIZE / 2,
 114                     sprite_pos[1] + offset[1] + TILE_SIZE / 2)
 115             true_point = self.to_parent(*check_point)
 116             if check_point[0] < 0:
 117                 continue
 118             if check_point[1] < 0:
 119                 continue
 120             if check_point[0] >= self.size[0]:
 121                 continue
 122             if check_point[1] >= self.size[1]:
 123                 continue
 124             while not self.included(true_point, 0):
 125                 # Scroll ourselves
 126                 if true_point[0] >= self.view.size[0]:
 127                     self.view.scroll_x += self.x_scroll_margin
 128                     true_point = self.to_parent(*check_point)
 129                     # Avoid an infinite loop that can happen we
 130                     # changing screens
 131                     if self.view.scroll_x > 0.99:
 132                         return
 133                 elif true_point[0] < 0:
 134                     self.view.scroll_x -= self.x_scroll_margin
 135                     true_point = self.to_parent(*check_point)
 136                     # See above
 137                     if self.view.scroll_x < 0.01:
 138                         return
 139                 elif true_point[1] >= self.view.size[1]:
 140                     self.view.scroll_y += self.y_scroll_margin
 141                     true_point = self.to_parent(*check_point)
 142                     # See above
 143                     if self.view.scroll_y > 0.99:
 144                         return
 145                 elif true_point[1] < 0:
 146                     self.view.scroll_y -= self.y_scroll_margin
 147                     true_point = self.to_parent(*check_point)
 148                     # See above
 149                     if self.view.scroll_y < 0.01:
 150                         return
 151
 152     def included(self, point, margin):
 153         if point[0] < margin:
 154             return False
 155         if point[0] >= self.view.size[0] - margin:
 156             return False
 157         if point[1] < margin:
 158             return False
 159         if point[1] >= self.view.size[1] - margin:
 160             return False
 161         return True
 162
 163     def draw_nemesis(self):
 164         if not self.nemesis.on_board():
 165             return
 166         if self.nemesis_tile:
 167             self.remove_widget(self.nemesis_tile)
 168         sprite_pos = (self.nemesis.pos[0] * TILE_SIZE,
 169                 self.nemesis.pos[1] * TILE_SIZE)
 170         self.nemesis_tile = Widget(size=(TILE_SIZE, TILE_SIZE),
 171                 pos=sprite_pos)
 172         with self.nemesis_tile.canvas:
 173             Rectangle(pos=sprite_pos, size=self.nemesis_tile.size,
 174                     texture=self.nemesis.get_texture())
 175         self.add_widget(self.nemesis_tile)
 176
 177     def _closed(self):
 178         if self.keyboard:
 179             self._key_bound = False
 180             self.keyboard.unbind(on_key_down=self._on_key_down)
 181
 182     def _on_key_down(self, keyboard, keycode, text, modifiers):
 183         direction = None
 184         letter = keycode[1].lower()
 185         if letter in UP:
 186             direction = (0, 1)
 187         elif letter in DOWN:
 188             direction = (0, -1)
 189         elif letter in LEFT:
 190             direction = (-1, 0)
 191         elif letter in RIGHT:
 192             direction = (1, 0)
 193         if direction:
 194             self.do_move(direction)
 195
 196     def do_move(self, direction):
 197         if not self.level_obj:
 198             return
 199         # Do nothing on null moves
 200         if not self.player.move(direction, self.level_obj):
 201             return
 202         if self.check_state():
 203             return
 204         self.do_nemesis_move()
 205
 206     def do_nemesis_move(self):
 207         self.nemesis.move(self.level_obj, self.player.pos)
 208         if self.check_state():
 209             return
 210         if self.move_counter > 4:
 211             self.move_counter = 0
 212             self.draw_nemesis()
 213             self.nemesis.move(self.level_obj, self.player.pos)
 214             if self.check_state():
 215                 return
 216         else:
 217             self.move_counter += 1
 218         self.draw_nemesis()
 219         self.draw_player()
 220         self.reset_timer()
 221
 222     def timed_move(self, event):
 223         if not self.level_obj:
 224             return
 225         self.do_nemesis_move()
 226
 227     def reset_timer(self):
 228         self.timer_set = True
 229         Clock.unschedule(self.timed_move)
 230         Clock.schedule_once(self.timed_move, 3)
 231
 232     def check_caught(self):
 233         return self.nemesis.pos == self.player.pos
 234
 235     def stop_game(self):
 236         Clock.unschedule(self.timed_move)
 237         if self.nemesis_tile:
 238             self.remove_widget(self.nemesis_tile)
 239         self.nemesis.reset_pos()
 240
 241     def reset_level(self):
 242         Clock.unschedule(self.timed_move)
 243         self.timer_set = False
 244         self.move_counter = 0
 245         if self.nemesis_tile:
 246             self.remove_widget(self.nemesis_tile)
 247         self.nemesis.reset_pos()
 248
 249     def load_level(self):
 250         if self.level_obj:
 251             self.level_obj.load_tiles()
 252             self.player.pos = self.level_obj.enter_pos
 253             if self.player_tile:
 254                 self.remove_widget(self.player_tile)
 255             self.view.scroll_x = 0
 256             self.view.scroll_y = 0
 257             self.build()
 258             self.draw_nemesis()
 259             self.draw_player()
 260             return True
 261         return False
 262
 263     def do_reload(self):
 264         self.level_obj = self.level_list.get_current_level()
 265
 266     def check_state(self):
 267         if not self.level_obj:
 268             return True
 269         if self.level_obj.at_exit(self.player.pos):
 270             self.reset_level()
 271             # Jump to next level
 272             self.level_obj = self.level_list.advance_to_next_level()
 273             if not self.load_level():
 274                 self._closed()
 275                 self.app.game_over(True)
 276             return True
 277         elif self.check_caught():
 278             # Caught
 279             if self.app.config.getdefault('bane', 'sound', '0') != '0':
 280                 self.caught.play()
 281             self.reset_level()
 282             self._closed()
 283             self.app.game_over(False)
 284             return True
 285         elif self.level_obj.is_button(self.player.pos):
 286             self.level_obj.trigger_button(self.player.pos)
 287         elif self.level_obj.is_button(self.nemesis.pos):
 288             self.level_obj.trigger_button(self.nemesis.pos)
 289         for map_pos, new_tile in self.level_obj.get_changed_tiles():
 290             pos = (map_pos[0] * TILE_SIZE, map_pos[1] * TILE_SIZE)
 291             self.draw_tile(pos, new_tile)
 292         return False
 293
 294     def _calc_mouse_pos(self, pos):
 295         pos = self.to_local(*pos)
 296         return (int(pos[0] / TILE_SIZE), int(pos[1] / TILE_SIZE))
 297
 298     def _near_player(self, pos):
 299         return (abs(pos[0] - self.player.pos[0]) < 2 and
 300                 abs(pos[1] - self.player.pos[1]) < 2)
 301
 302     def on_touch_down(self, touch):
 303         pos = self._calc_mouse_pos(touch.pos)
 304         if self._near_player(pos):
 305             self.mouse_move = True
 306             self.mouse_start = pos
 307
 308     def on_touch_up(self, touch):
 309         self.mouse_move = False
 310
 311     def on_touch_move(self, touch):
 312         if self.mouse_move:
 313             pos = self._calc_mouse_pos(touch.pos)
 314             if (pos[0] - self.mouse_start[0] != 0) or (
 315                     pos[1] - self.mouse_start[1] != 0):
 316                 direction = (pos[0] - self.mouse_start[0],
 317                         pos[1] - self.mouse_start[1])
 318                 self.do_move(direction)
 319                 self.mouse_start = pos
 320
 321
 322 class Screen(Widget):
 323
 324     BACKGROUND = None
 325     START = 'Start'
 326
 327     def __init__(self, app):
 328         super(Screen, self).__init__()
 329         self.image = load_image(self.BACKGROUND)
 330         self.app = app
 331         with self.canvas:
 332             Rectangle(pos=(0, 0), size=(1026, 760),
 333                     texture=self.image.texture)
 334
 335         self.stop_button = Label(
 336                 text='[ref=quit][color=ff0066]Quit[/color][/ref]',
 337                 font_size=30,
 338                 markup=True,
 339                 size=(200, 40),
 340                 pos=((1026 - 200) / 2 - 100, 100))
 341         self.stop_button.bind(on_ref_press=self.app.stop_app)
 342         self.start_button = Label(
 343                 text="[ref=start][color=00ff66]%s[/color][/ref]" % self.START,
 344                 font_size=30,
 345                 markup=True, size=(200, 40),
 346                 pos=((1026 - 200) / 2 + 100, 100))
 347         self.start_button.bind(on_ref_press=self.app.start_game)
 348         self.add_widget(self.stop_button)
 349         self.add_widget(self.start_button)
 350
 351
 352 class IntroScreen(Screen):
 353
 354     BACKGROUND = 'screens/intro_screen.png'
 355     START = 'Start the Game'
 356
 357
 358 class WonScreen(Screen):
 359
 360     BACKGROUND = 'screens/won.png'
 361     START = 'Play again?'
 362
 363
 364 class LostScreen(Screen):
 365
 366     BACKGROUND = 'screens/lost.png'
 367     START = 'Retry?'
 368
 369
 370 class GameApp(App):
 371
 372     title = "Bane's Befuddlement"
 373
 374     def __init__(self):
 375         super(GameApp, self).__init__()
 376         self.levels = LevelList()
 377         self.game = None
 378
 379     def build_config(self, config):
 380         config.setdefaults('bane', {
 381             'start_level': 'levels/level1.txt',
 382             'sound': 'True'
 383             })
 384
 385     def build_settings(self, settings):
 386         config_json = """[
 387             { "type": "title",
 388               "title": "Bane's Befuddlement"
 389             },
 390
 391             { "type": "options",
 392               "title": "Start Level",
 393               "desc": "Level to start at",
 394               "section": "bane",
 395               "key": "start_level",
 396               "options": ["%s"] },
 397
 398             { "type": "bool",
 399               "title": "Sound",
 400               "desc": "Enable sound",
 401               "section": "bane",
 402               "key": "sound"
 403              }
 404              ]""" % '", "'.join(self.levels.get_level_names())
 405         settings.add_json_panel("Bane's Befuddlement",
 406                 self.config, data=config_json)
 407
 408     def build(self):
 409         root = ScrollView(size_hint=(None, None))
 410         level_name = self.config.getdefault('bane', 'start_level', None)
 411         if level_name:
 412             self.levels.set_level_to(level_name)
 413         self.game = GameWindow(self.levels, self)
 414         return root
 415
 416     def on_start(self):
 417         from kivy.base import EventLoop
 418         window = EventLoop.window
 419         if platform() == 'android':
 420             window.fullscreen = True
 421         self.root.size = window.size
 422         errors = self.levels.get_errors()
 423         if errors:
 424             popup = Popup(title='Levels excluded',
 425                     content=Label(text='\n'.join(errors)),
 426                     size_hint=(.5, .5))
 427             popup.open()
 428         self.make_intro()
 429
 430     def make_intro(self):
 431         self.root.clear_widgets()
 432         screen = IntroScreen(self)
 433         self.root.add_widget(screen)
 434
 435     def stop_app(self, label, ref):
 436         self.stop()
 437
 438     def start_game(self, label, ref):
 439         """Start the game"""
 440         self.root.clear_widgets()
 441         self.root.add_widget(self.game)
 442         self.game.fix_scroll_margins()
 443         self.game.reset_level()
 444         self.game.load_level()
 445         # Ensure the player is visible
 446         self.root.scroll_x = 0
 447         self.root.scroll_y = 0
 448         self.game.draw_player()
 449         self.game.draw_nemesis()
 450
 451     def game_over(self, won):
 452         if won:
 453             screen = WonScreen(self)
 454             self.levels.reset()
 455             self.game.do_reload()
 456         else:
 457             screen = LostScreen(self)
 458         self.game.stop_game()
 459         self.root.clear_widgets()
 460         self.root.add_widget(screen)
 461
 462
 463 def main():
 464     """ Erdslangetjie, a maze game of eluding nemesis
 465     """
 466     GameApp().run()