koperkapel/loaders/levelloader.py

   1 """Loader a level, using the pygame-zero ResourceLoader infrastructure"""
   2
   3 import json
   4
   5 from pgzero.loaders import ResourceLoader
   6
   7 from ..gamelib.tiles import Wall, Floor, Tunnel, Underground, Grate
   8 from ..gamelib.level import Level
   9 from ..gamelib.door import Door
  10 from ..gamelib.keypad import Keypad
  11
  12
  13
  14 TILES = {
  15     "cwall": Wall, # rename this everywhere
  16     "floor": Floor,
  17     "tunnel": Tunnel,
  18     "underground": Underground,
  19 }
  20
  21 class LevelLoader(ResourceLoader):
  22     """ Level loader. """
  23
  24     EXTNS = ['json']
  25     TYPE = 'level'
  26
  27     def _load(self, level_path):
  28         f = open(level_path, 'r')
  29         level_data = json.load(f)
  30         f.close()
  31         self._level = Level()
  32         self._level.height = len(level_data['tiles'])
  33         self._level.width = len(level_data['tiles'][0])
  34         self._level.tiles = level_data['tiles']
  35         self._level.tileset = level_data['tileset']
  36         self._level.start_pos = level_data["starting pos"]
  37         # Consistency check, so we can assume things are correct
  38         # in the level renderer
  39         for row, row_data in enumerate(self._level.tiles):
  40             if len(row_data) != self._level.width:
  41                 raise RuntimeError("Incorrect len for row %d" % row)
  42         for tile in TILES.values():
  43             tile.TILESET = self._level.tileset
  44         self._load_tile_images()
  45         for door_info in level_data['door_info']:
  46             # Create the doors first
  47             doors = []
  48             for door in door_info['doors']:
  49                 # Sort out angle
  50                 new_door = Door(door[0], door[1], 0)
  51                 self._level.doors.append(new_door)
  52             # Add the keypads
  53             for keypad in door_info['keypads']:
  54                 new_keypad = Keypad(keypad[0], keypad[1], doors)
  55                 self._level.keypads.append(new_keypad)
  56         return self._level
  57
  58     def _load_tile_images(self):
  59         """Load all the tile images"""
  60         for y, row_data in enumerate(self._level.tiles):
  61             for x, tile in enumerate(row_data):
  62                 neighborhood = self._level.get_neighbors(x, y)
  63                 for layer in ['floor', 'tunnels']:
  64                     neighbors = [x[layer] if x else None for x in neighborhood]
  65                     tile['%s image' % layer] = \
  66                             TILES[tile[layer]['base']].image(neighbors)
  67                     # Hack this for now
  68                     if layer == 'floor' and 'crawl' in tile[layer]['behaviour']:
  69                         print('Here')
  70                         tile['floor image'] = Grate.image(neighbors)
  71
  72
  73 levels = LevelLoader('levels')