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                 elif true_point[0] < 0:
 130                     self.view.scroll_x -= self.x_scroll_margin
 131                     true_point = self.to_parent(*check_point)
 132                 elif true_point[1] >= self.view.size[1]:
 133                     self.view.scroll_y += self.y_scroll_margin
 134                     true_point = self.to_parent(*check_point)
 135                 elif true_point[1] < 0:
 136                     self.view.scroll_y -= self.y_scroll_margin
 137                     true_point = self.to_parent(*check_point)
 138
 139     def included(self, point, margin):
 140         if point[0] < margin:
 141             return False
 142         if point[0] >= self.view.size[0] - margin:
 143             return False
 144         if point[1] < margin:
 145             return False
 146         if point[1] >= self.view.size[1] - margin:
 147             return False
 148         return True
 149
 150     def draw_nemesis(self):
 151         if not self.nemesis.on_board():
 152             return
 153         if self.nemesis_tile:
 154             self.remove_widget(self.nemesis_tile)
 155         sprite_pos = (self.nemesis.pos[0] * TILE_SIZE,
 156                 self.nemesis.pos[1] * TILE_SIZE)
 157         self.nemesis_tile = Widget(size=(TILE_SIZE, TILE_SIZE),
 158                 pos=sprite_pos)
 159         with self.nemesis_tile.canvas:
 160             Rectangle(pos=sprite_pos, size=self.nemesis_tile.size,
 161                     texture=self.nemesis.get_texture())
 162         self.add_widget(self.nemesis_tile)
 163
 164     def _closed(self):
 165         if self.keyboard:
 166             self._key_bound = False
 167             self.keyboard.unbind(on_key_down=self._on_key_down)
 168
 169     def _on_key_down(self, keyboard, keycode, text, modifiers):
 170         direction = None
 171         letter = keycode[1].lower()
 172         if letter in UP:
 173             direction = (0, 1)
 174         elif letter in DOWN:
 175             direction = (0, -1)
 176         elif letter in LEFT:
 177             direction = (-1, 0)
 178         elif letter in RIGHT:
 179             direction = (1, 0)
 180         if direction:
 181             self.do_move(direction)
 182
 183     def do_move(self, direction):
 184         if not self.level_obj:
 185             return
 186         # Do nothing on null moves
 187         if not self.player.move(direction, self.level_obj):
 188             return
 189         self.check_state()
 190         self.do_nemesis_move()
 191
 192     def do_nemesis_move(self):
 193         self.nemesis.move(self.level_obj, self.player.pos)
 194         self.check_state()
 195         if self.move_counter > 4:
 196             self.move_counter = 0
 197             self.draw_nemesis()
 198             self.nemesis.move(self.level_obj, self.player.pos)
 199             self.check_state()
 200         else:
 201             self.move_counter += 1
 202         self.draw_nemesis()
 203         self.draw_player()
 204         self.reset_timer()
 205
 206     def timed_move(self, event):
 207         if not self.level_obj:
 208             return
 209         self.do_nemesis_move()
 210
 211     def reset_timer(self):
 212         self.timer_set = True
 213         Clock.unschedule(self.timed_move)
 214         Clock.schedule_once(self.timed_move, 3)
 215
 216     def check_caught(self):
 217         return self.nemesis.pos == self.player.pos
 218
 219     def stop_game(self):
 220         Clock.unschedule(self.timed_move)
 221         if self.nemesis_tile:
 222             self.remove_widget(self.nemesis_tile)
 223         self.nemesis.reset_pos()
 224
 225     def reset_level(self):
 226         Clock.unschedule(self.timed_move)
 227         self.timer_set = False
 228         self.move_counter = 0
 229         if self.nemesis_tile:
 230             self.remove_widget(self.nemesis_tile)
 231         self.nemesis.reset_pos()
 232
 233     def load_level(self):
 234         if self.level_obj:
 235             self.level_obj.load_tiles()
 236             self.player.pos = self.level_obj.enter_pos
 237             if self.player_tile:
 238                 self.remove_widget(self.player_tile)
 239             self.view.scroll_x = 0
 240             self.view.scroll_y = 0
 241             self.build()
 242             self.draw_nemesis()
 243             self.draw_player()
 244             return True
 245         return False
 246
 247     def do_reload(self):
 248         self.level_obj = self.level_list.get_current_level()
 249
 250     def check_state(self):
 251         if not self.level_obj:
 252             return
 253         if self.level_obj.at_exit(self.player.pos):
 254             self.reset_level()
 255             # Jump to next level
 256             self.level_obj = self.level_list.advance_to_next_level()
 257             if not self.load_level():
 258                 self._closed()
 259                 self.app.game_over(True)
 260             return
 261         elif self.check_caught():
 262             # Caught
 263             if self.app.config.getdefault('bane', 'sound', '0') != '0':
 264                 self.caught.play()
 265             self.reset_level()
 266             self._closed()
 267             self.app.game_over(False)
 268             return
 269         elif self.level_obj.is_button(self.player.pos):
 270             self.level_obj.trigger_button(self.player.pos)
 271         elif self.level_obj.is_button(self.nemesis.pos):
 272             self.level_obj.trigger_button(self.nemesis.pos)
 273         for map_pos, new_tile in self.level_obj.get_changed_tiles():
 274             pos = (map_pos[0] * TILE_SIZE, map_pos[1] * TILE_SIZE)
 275             self.draw_tile(pos, new_tile)
 276
 277     def _calc_mouse_pos(self, pos):
 278         pos = self.to_local(*pos)
 279         return (int(pos[0] / TILE_SIZE), int(pos[1] / TILE_SIZE))
 280
 281     def _near_player(self, pos):
 282         return (abs(pos[0] - self.player.pos[0]) < 2 and
 283                 abs(pos[1] - self.player.pos[1]) < 2)
 284
 285     def on_touch_down(self, touch):
 286         pos = self._calc_mouse_pos(touch.pos)
 287         if self._near_player(pos):
 288             self.mouse_move = True
 289             self.mouse_start = pos
 290
 291     def on_touch_up(self, touch):
 292         self.mouse_move = False
 293
 294     def on_touch_move(self, touch):
 295         if self.mouse_move:
 296             pos = self._calc_mouse_pos(touch.pos)
 297             if (pos[0] - self.mouse_start[0] != 0) or (
 298                     pos[1] - self.mouse_start[1] != 0):
 299                 direction = (pos[0] - self.mouse_start[0],
 300                         pos[1] - self.mouse_start[1])
 301                 self.do_move(direction)
 302                 self.mouse_start = pos
 303
 304
 305 class Screen(Widget):
 306
 307     BACKGROUND = None
 308     START = 'Start'
 309
 310     def __init__(self, app):
 311         super(Screen, self).__init__()
 312         self.image = load_image(self.BACKGROUND)
 313         self.app = app
 314         with self.canvas:
 315             Rectangle(pos=(0, 0), size=(1026, 760),
 316                     texture=self.image.texture)
 317
 318         self.stop_button = Label(
 319                 text='[ref=quit][color=ff0066]Quit[/color][/ref]',
 320                 font_size=30,
 321                 markup=True,
 322                 size=(200, 40),
 323                 pos=((1026 - 200) / 2 - 100, 100))
 324         self.stop_button.bind(on_ref_press=self.app.stop_app)
 325         self.start_button = Label(
 326                 text="[ref=start][color=00ff66]%s[/color][/ref]" % self.START,
 327                 font_size=30,
 328                 markup=True, size=(200, 40),
 329                 pos=((1026 - 200) / 2 + 100, 100))
 330         self.start_button.bind(on_ref_press=self.app.start_game)
 331         self.add_widget(self.stop_button)
 332         self.add_widget(self.start_button)
 333
 334
 335 class IntroScreen(Screen):
 336
 337     BACKGROUND = 'screens/intro_screen.png'
 338     START = 'Start the Game'
 339
 340
 341 class WonScreen(Screen):
 342
 343     BACKGROUND = 'screens/won.png'
 344     START = 'Play again?'
 345
 346
 347 class LostScreen(Screen):
 348
 349     BACKGROUND = 'screens/lost.png'
 350     START = 'Retry?'
 351
 352
 353 class GameApp(App):
 354
 355     title = "Bane's Befuddlement"
 356
 357     def __init__(self):
 358         super(GameApp, self).__init__()
 359         self.levels = LevelList()
 360         self.game = None
 361
 362     def build_config(self, config):
 363         config.setdefaults('bane', {
 364             'start_level': 'levels/level1.txt',
 365             'sound': 'True'
 366             })
 367
 368     def build_settings(self, settings):
 369         config_json = """[
 370             { "type": "title",
 371               "title": "Bane's Befuddlement"
 372             },
 373
 374             { "type": "options",
 375               "title": "Start Level",
 376               "desc": "Level to start at",
 377               "section": "bane",
 378               "key": "start_level",
 379               "options": ["%s"] },
 380
 381             { "type": "bool",
 382               "title": "Sound",
 383               "desc": "Enable sound",
 384               "section": "bane",
 385               "key": "sound"
 386              }
 387              ]""" % '", "'.join(self.levels.get_level_names())
 388         settings.add_json_panel("Bane's Befuddlement",
 389                 self.config, data=config_json)
 390
 391     def build(self):
 392         root = ScrollView(size_hint=(None, None))
 393         level_name = self.config.getdefault('bane', 'start_level', None)
 394         if level_name:
 395             self.levels.set_level_to(level_name)
 396         self.game = GameWindow(self.levels, self)
 397         return root
 398
 399     def on_start(self):
 400         from kivy.base import EventLoop
 401         window = EventLoop.window
 402         if platform() == 'android':
 403             window.fullscreen = True
 404         self.root.size = window.size
 405         errors = self.levels.get_errors()
 406         if errors:
 407             popup = Popup(title='Levels excluded',
 408                     content=Label(text='\n'.join(errors)),
 409                     size_hint=(.5, .5))
 410             popup.open()
 411         self.make_intro()
 412
 413     def make_intro(self):
 414         self.root.clear_widgets()
 415         screen = IntroScreen(self)
 416         self.root.add_widget(screen)
 417
 418     def stop_app(self, label, ref):
 419         self.stop()
 420
 421     def start_game(self, label, ref):
 422         """Start the game"""
 423         self.root.clear_widgets()
 424         self.root.add_widget(self.game)
 425         self.game.fix_scroll_margins()
 426         self.game.reset_level()
 427         self.game.load_level()
 428         # Ensure the player is visible
 429         self.root.scroll_x = 0
 430         self.root.scroll_y = 0
 431         self.game.draw_player()
 432         self.game.draw_nemesis()
 433
 434     def game_over(self, won):
 435         if won:
 436             screen = WonScreen(self)
 437             self.levels.reset()
 438             self.game.do_reload()
 439         else:
 440             screen = LostScreen(self)
 441         self.game.stop_game()
 442         self.root.clear_widgets()
 443         self.root.add_widget(screen)
 444
 445
 446 def main():
 447     """ Erdslangetjie, a maze game of eluding nemesis
 448     """
 449     GameApp().run()