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         if self.check_state():
 190             return
 191         self.do_nemesis_move()
 192
 193     def do_nemesis_move(self):
 194         self.nemesis.move(self.level_obj, self.player.pos)
 195         if self.check_state():
 196             return
 197         if self.move_counter > 4:
 198             self.move_counter = 0
 199             self.draw_nemesis()
 200             self.nemesis.move(self.level_obj, self.player.pos)
 201             if self.check_state():
 202                 return
 203         else:
 204             self.move_counter += 1
 205         self.draw_nemesis()
 206         self.draw_player()
 207         self.reset_timer()
 208
 209     def timed_move(self, event):
 210         if not self.level_obj:
 211             return
 212         self.do_nemesis_move()
 213
 214     def reset_timer(self):
 215         self.timer_set = True
 216         Clock.unschedule(self.timed_move)
 217         Clock.schedule_once(self.timed_move, 3)
 218
 219     def check_caught(self):
 220         return self.nemesis.pos == self.player.pos
 221
 222     def stop_game(self):
 223         Clock.unschedule(self.timed_move)
 224         if self.nemesis_tile:
 225             self.remove_widget(self.nemesis_tile)
 226         self.nemesis.reset_pos()
 227
 228     def reset_level(self):
 229         Clock.unschedule(self.timed_move)
 230         self.timer_set = False
 231         self.move_counter = 0
 232         if self.nemesis_tile:
 233             self.remove_widget(self.nemesis_tile)
 234         self.nemesis.reset_pos()
 235
 236     def load_level(self):
 237         if self.level_obj:
 238             self.level_obj.load_tiles()
 239             self.player.pos = self.level_obj.enter_pos
 240             if self.player_tile:
 241                 self.remove_widget(self.player_tile)
 242             self.view.scroll_x = 0
 243             self.view.scroll_y = 0
 244             self.build()
 245             self.draw_nemesis()
 246             self.draw_player()
 247             return True
 248         return False
 249
 250     def do_reload(self):
 251         self.level_obj = self.level_list.get_current_level()
 252
 253     def check_state(self):
 254         if not self.level_obj:
 255             return True
 256         if self.level_obj.at_exit(self.player.pos):
 257             self.reset_level()
 258             # Jump to next level
 259             self.level_obj = self.level_list.advance_to_next_level()
 260             if not self.load_level():
 261                 self._closed()
 262                 self.app.game_over(True)
 263             return True
 264         elif self.check_caught():
 265             # Caught
 266             if self.app.config.getdefault('bane', 'sound', '0') != '0':
 267                 self.caught.play()
 268             self.reset_level()
 269             self._closed()
 270             self.app.game_over(False)
 271             return True
 272         elif self.level_obj.is_button(self.player.pos):
 273             self.level_obj.trigger_button(self.player.pos)
 274         elif self.level_obj.is_button(self.nemesis.pos):
 275             self.level_obj.trigger_button(self.nemesis.pos)
 276         for map_pos, new_tile in self.level_obj.get_changed_tiles():
 277             pos = (map_pos[0] * TILE_SIZE, map_pos[1] * TILE_SIZE)
 278             self.draw_tile(pos, new_tile)
 279         return False
 280
 281     def _calc_mouse_pos(self, pos):
 282         pos = self.to_local(*pos)
 283         return (int(pos[0] / TILE_SIZE), int(pos[1] / TILE_SIZE))
 284
 285     def _near_player(self, pos):
 286         return (abs(pos[0] - self.player.pos[0]) < 2 and
 287                 abs(pos[1] - self.player.pos[1]) < 2)
 288
 289     def on_touch_down(self, touch):
 290         pos = self._calc_mouse_pos(touch.pos)
 291         if self._near_player(pos):
 292             self.mouse_move = True
 293             self.mouse_start = pos
 294
 295     def on_touch_up(self, touch):
 296         self.mouse_move = False
 297
 298     def on_touch_move(self, touch):
 299         if self.mouse_move:
 300             pos = self._calc_mouse_pos(touch.pos)
 301             if (pos[0] - self.mouse_start[0] != 0) or (
 302                     pos[1] - self.mouse_start[1] != 0):
 303                 direction = (pos[0] - self.mouse_start[0],
 304                         pos[1] - self.mouse_start[1])
 305                 self.do_move(direction)
 306                 self.mouse_start = pos
 307
 308
 309 class Screen(Widget):
 310
 311     BACKGROUND = None
 312     START = 'Start'
 313
 314     def __init__(self, app):
 315         super(Screen, self).__init__()
 316         self.image = load_image(self.BACKGROUND)
 317         self.app = app
 318         with self.canvas:
 319             Rectangle(pos=(0, 0), size=(1026, 760),
 320                     texture=self.image.texture)
 321
 322         self.stop_button = Label(
 323                 text='[ref=quit][color=ff0066]Quit[/color][/ref]',
 324                 font_size=30,
 325                 markup=True,
 326                 size=(200, 40),
 327                 pos=((1026 - 200) / 2 - 100, 100))
 328         self.stop_button.bind(on_ref_press=self.app.stop_app)
 329         self.start_button = Label(
 330                 text="[ref=start][color=00ff66]%s[/color][/ref]" % self.START,
 331                 font_size=30,
 332                 markup=True, size=(200, 40),
 333                 pos=((1026 - 200) / 2 + 100, 100))
 334         self.start_button.bind(on_ref_press=self.app.start_game)
 335         self.add_widget(self.stop_button)
 336         self.add_widget(self.start_button)
 337
 338
 339 class IntroScreen(Screen):
 340
 341     BACKGROUND = 'screens/intro_screen.png'
 342     START = 'Start the Game'
 343
 344
 345 class WonScreen(Screen):
 346
 347     BACKGROUND = 'screens/won.png'
 348     START = 'Play again?'
 349
 350
 351 class LostScreen(Screen):
 352
 353     BACKGROUND = 'screens/lost.png'
 354     START = 'Retry?'
 355
 356
 357 class GameApp(App):
 358
 359     title = "Bane's Befuddlement"
 360
 361     def __init__(self):
 362         super(GameApp, self).__init__()
 363         self.levels = LevelList()
 364         self.game = None
 365
 366     def build_config(self, config):
 367         config.setdefaults('bane', {
 368             'start_level': 'levels/level1.txt',
 369             'sound': 'True'
 370             })
 371
 372     def build_settings(self, settings):
 373         config_json = """[
 374             { "type": "title",
 375               "title": "Bane's Befuddlement"
 376             },
 377
 378             { "type": "options",
 379               "title": "Start Level",
 380               "desc": "Level to start at",
 381               "section": "bane",
 382               "key": "start_level",
 383               "options": ["%s"] },
 384
 385             { "type": "bool",
 386               "title": "Sound",
 387               "desc": "Enable sound",
 388               "section": "bane",
 389               "key": "sound"
 390              }
 391              ]""" % '", "'.join(self.levels.get_level_names())
 392         settings.add_json_panel("Bane's Befuddlement",
 393                 self.config, data=config_json)
 394
 395     def build(self):
 396         root = ScrollView(size_hint=(None, None))
 397         level_name = self.config.getdefault('bane', 'start_level', None)
 398         if level_name:
 399             self.levels.set_level_to(level_name)
 400         self.game = GameWindow(self.levels, self)
 401         return root
 402
 403     def on_start(self):
 404         from kivy.base import EventLoop
 405         window = EventLoop.window
 406         if platform() == 'android':
 407             window.fullscreen = True
 408         self.root.size = window.size
 409         errors = self.levels.get_errors()
 410         if errors:
 411             popup = Popup(title='Levels excluded',
 412                     content=Label(text='\n'.join(errors)),
 413                     size_hint=(.5, .5))
 414             popup.open()
 415         self.make_intro()
 416
 417     def make_intro(self):
 418         self.root.clear_widgets()
 419         screen = IntroScreen(self)
 420         self.root.add_widget(screen)
 421
 422     def stop_app(self, label, ref):
 423         self.stop()
 424
 425     def start_game(self, label, ref):
 426         """Start the game"""
 427         self.root.clear_widgets()
 428         self.root.add_widget(self.game)
 429         self.game.fix_scroll_margins()
 430         self.game.reset_level()
 431         self.game.load_level()
 432         # Ensure the player is visible
 433         self.root.scroll_x = 0
 434         self.root.scroll_y = 0
 435         self.game.draw_player()
 436         self.game.draw_nemesis()
 437
 438     def game_over(self, won):
 439         if won:
 440             screen = WonScreen(self)
 441             self.levels.reset()
 442             self.game.do_reload()
 443         else:
 444             screen = LostScreen(self)
 445         self.game.stop_game()
 446         self.root.clear_widgets()
 447         self.root.add_widget(screen)
 448
 449
 450 def main():
 451     """ Erdslangetjie, a maze game of eluding nemesis
 452     """
 453     GameApp().run()