=== worldtiles ===
00 - empty (no polygons so texture)
01 - block (invisible so no texture)
02 - building corner (for top and middle floors)
03 - building wall (for top and middle floors)
04 - building window (for top and middle floors)
05 - building center (for top floor)
06 - catacomb wall (1 side)
07 - street (middle)
08 - sidewalk
09 - sidewalk corner
10 - street
11 - street hole
12 - sewer wall
13 - sewer middle
14 - sewer hole
15 - catacomb tunnel
16 - catacomb 4 pillars
17 - catacomb door
18 - catacomb empty
19 - catacomb wall (4 sides)
20 - water floor
21 - sewer/catacomb door
22 - catacomb stairs
23 - building corner (for bottom floor)
24 - building wall (for bottom floor)
25 - building window (for bottom floor)
26 - building door (for bottom floor)
27 - building center (for middle and bottom floor)
28 - sewer corner 1
29 - sewer corner 2
30 - catacomb wall (2 sides opposit of each other)
31 - skywalk (min length direct building to building)
32 - elevator shaft bottom
33 - elevator shaft middle
34 - elevator shaft top
35 - water floor wall
36 - skywalk to building
37 - skywalk
38 - water floor corner
39 - sidewalk no sides
40 - building stairs to roof
41 - sign
42 - sign
43 - sign
44 - sign
45 - sign (roof top billboard)