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