Render an isometric overview of a VXL (AoS 0.x) map to a PNG. Improved version available here: https://gist.github.com/learn-more/7592999

vxl2png.py

# vxl2png.py: renders a vxl map isometrically
# by rakiru, 2013 - public domain
# Based on vxl2tga.py by GreaseMonkey, 2013 - public domain
# https://gist.github.com/iamgreaser/4709760

import sys, struct
import Image

if len(sys.argv) != 3:
	print "Usage: %s mapfile.vxl output.png" % sys.argv[0]
	exit(0)
 
WIDTH, HEIGHT = 2048, 1024+128
img = Image.new("RGBA", (WIDTH, HEIGHT))
 
def pp(x,y,z,col):
	rx = (z-x)*2+(WIDTH/2)
	ry = x+z+y*2
	#print rx,ry,x,y,z
	try:
		for i in xrange(2):
			for j in xrange(2):
				img.im.putpixel((rx+i, ry+j), col)
	except Exception as e:
		print rx, ry
		raise e

def get_colour(fp):
	b = struct.unpack('B', fp.read(1))[0]
	g = struct.unpack('B', fp.read(1))[0]
	r = struct.unpack('B', fp.read(1))[0]
	return (r, g, b)
 
fp = open(sys.argv[1],"rb")
for x in xrange(512):
	for z in xrange(512):
		cl = []
		lc = None
		while True:
			n,s,e,a = struct.unpack("<BBBB", fp.read(4))
			rn = n if n != 0 else e-s+1
			
			for i in xrange(len(cl)):
				pp(x,a-len(cl)+i,z,cl[i])
 
			cl = []
 
			for i in xrange(s,e+1,1):
				lc = get_colour(fp)
				pp(x,i,z,lc)
				fp.read(1)
 
			if n == 0:
				break
 
			for i in xrange(e-s+1,n-1,1):
				cl.append(get_colour(fp))
				fp.read(1)
		
		for i in xrange(e+1,64,1):
			pp(x,i,z,lc)
fp.close()
img.save(sys.argv[2], "PNG")