gen_automaps.py

import Image
import os.path

fpx = 64
# max +/- Y coordinate
fy = 40
# max +/- X coordinate
fx = 90
# ~max number of maps.
mn = 60
hasmaps = False

for n in range(0, mn):
  hasmaps = False
  new_im = Image.new('RGB', (fpx*fx*2, fpx*fy*2))
  for y in range(-fy, fy):
      for x in range(-fx, fx):
          # Look for files one directory up.
          fname = "../%d_%d_%d.bmp"%(n, x, y)
          if os.path.isfile(fname):
              hasmaps = True
              im = Image.open(fname)
              new_im.paste(im, ((x+fx)*fpx, (y+fy)*fpx))
  if hasmaps:
    new_im.save("map_%d.bmp"%n, 'BMP')