koperkapel/gamelib/tiles.py

   1 """ Definitions for the various tile types """
   2
   3 import os
   4 import random
   5
   6 from pygame.transform import rotate
   7
   8 from pgzero.loaders import images
   9
  10
  11 class Tile:
  12     IMG = None
  13     TILESET = None
  14
  15     @classmethod
  16     def image(cls, neighbors):
  17         if cls.IMG is None or cls.TILESET is None:
  18             raise NotImplementedError()
  19         return images.load(os.path.join(cls.TILESET, cls.IMG))
  20
  21 class OrientatedTile(Tile):
  22     ANGLE = None
  23
  24     @classmethod
  25     def image(cls, neighbors):
  26         if cls.IMG is None or cls.TILESET is None:
  27             raise NotImplementedError()
  28         img = images.load(os.path.join(cls.TILESET, cls.IMG))
  29         if cls.ANGLE:
  30             img = rotate(img, cls.ANGLE)
  31         return img
  32
  33
  34 class RandomizedTile(Tile):
  35     IMGDIR = None
  36     TILESET = None
  37     ROTATE = True
  38
  39     @classmethod
  40     def image(cls, neighbors):
  41         if cls.IMGDIR is None or cls.TILESET is None:
  42             raise NotImplementedError()
  43
  44         imgdir = os.path.join(os.path.dirname(__file__), '..', 'images',
  45                 cls.TILESET, cls.IMGDIR)
  46         imgpath = os.path.splitext(random.choice(os.listdir(imgdir)))[0]
  47         img = images.load(os.path.join(cls.TILESET, cls.IMGDIR, imgpath))
  48
  49         if cls.ROTATE:
  50             img = rotate(img, 90 * random.randint(0, 3))
  51
  52         return img
  53
  54 class Floor(RandomizedTile):
  55     IMGDIR = "floor"
  56
  57 class Wall(RandomizedTile):
  58     IMGDIR = "wall"
  59
  60 class Underground(RandomizedTile):
  61     IMGDIR = "underground"
  62
  63 class Tunnel(OrientatedTile):
  64
  65     @classmethod
  66     def image(cls, neighbors):
  67         connections = [True if 'crawl' in x['behaviour'] else False for x in neighbors]
  68         conn_count = connections.count(True)
  69         # simple cases
  70         cls.ANGLE = 0
  71         if conn_count == 0:
  72             # return single point tunnel
  73             cls.IMG = os.path.join('tunnel', 'tunnel_none')
  74         elif conn_count == 4:
  75             # crossroads
  76             cls.IMG = os.path.join('tunnel', 'tunnel_crossroads')
  77         elif conn_count == 1:
  78             # 1 point connector, roatated correctly
  79             cls.IMG = os.path.join('tunnel', 'tunnel_1way')
  80             # because of the ordering of neighbors, we use this formulation
  81             for x, angle in zip(connections, (90, 270, 0, 180)):
  82                 if x:
  83                     cls.ANGLE = angle
  84                     break
  85         elif conn_count == 3:
  86             # 3 point connector, rotated correctly
  87             cls.IMG = os.path.join('tunnel', 'tunnel_3way')
  88             # find the missing connection.
  89             for x, angle in zip(connections, (0, 180, 270, 90)):
  90                 if not x:
  91                     cls.ANGLE = angle
  92                     break
  93         elif conn_count == 2:
  94             # Need to distinguish pass-through or corner, and
  95             # rotate correctly
  96             # neighbors is left, right then up, down
  97             if connections[0] == connections[1]:
  98                 cls.IMG = os.path.join('tunnel', 'tunnel_passthrough')
  99                 if connections[0]:
 100                     cls.ANGLE = 90
 101             else:
 102                 cls.IMG = os.path.join('tunnel', 'tunnel_corner')
 103                 if connections[0]:
 104                     if connections[2]:
 105                         # left, up
 106                         cls.ANGLE = 90
 107                     else:
 108                         # left, down
 109                         cls.ANGLE = 180
 110                 else:
 111                     if connections[2]:
 112                         # right, up
 113                         cls.ANGLE = 0
 114                     else:
 115                         # right, down
 116                         cls.ANGLE = 270
 117
 118         return super(Tunnel, cls).image(neighbors)
 119