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