koperkapel/scenes/level.py

   1 """Render a level"""
   2
   3 import json
   4 import os
   5
   6 from pgzero.constants import keys
   7 from pgzero.loaders import images
   8 from .base import Scene, ChangeSceneEvent
   9 from .constants import TILE_SIZE, LEVEL_PATH
  10
  11
  12 class LevelScene(Scene):
  13     """ Level scene. """
  14
  15     def __init__(self, level_name):
  16         self._level_name = level_name
  17         f = open(os.path.join(LEVEL_PATH, level_name + '.json'))
  18         level_data = json.load(f)
  19         f.close()
  20         self._tiles = level_data['tiles']
  21         self._load_tile_images()
  22
  23     def draw(self, screen):
  24         screen.clear()
  25         #screen.draw.text("This is level {}".format(self._level_name), (200, 100))
  26         for tile in self._tiles:
  27             pos = tile['pos']
  28             pos = [pos[0] * TILE_SIZE, pos[1] * TILE_SIZE]
  29             if not 'image' in tile:
  30                 # Skip broken tiles for now
  31                 continue
  32             screen.blit(tile['image'], pos)
  33
  34     def _load_tile_images(self):
  35         """Load all the tile images"""
  36         for tile in self._tiles:
  37             tile['image'] = getattr(images, tile['base'])
  38
  39     def on_key_down(self, key, mod, unicode):
  40         if key == keys.ESCAPE:
  41             from .menu import MenuScene
  42             return [ChangeSceneEvent(MenuScene())]