vxl2tga.py

# vxl2tga.py: renders a vxl map isometrically
# by GreaseMonkey, 2013 - public domain

import sys, struct

WIDTH, HEIGHT = 2048, 1024+128
g = [[None for i in xrange(WIDTH)] for j in xrange(HEIGHT)]

def pp(x,y,z,col):
	rx = (z-x)*2+1024
	ry = x+z+y*2
	#print rx,ry,x,y,z
	g[ry+0][rx+0] = g[ry+1][rx+0] = col
	g[ry+0][rx+1] = g[ry+1][rx+1] = col

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 = fp.read(3)
				pp(x,i,z,lc)
				fp.read(1)

			if n == 0:
				break

			for i in xrange(e-s+1,n-1,1):
				cl.append(fp.read(3))
				fp.read(1)
		
		for i in xrange(e+1,64,1):
			pp(x,i,z,lc)
fp.close()

fp = open(sys.argv[2],"wb")
fp.write(struct.pack("<BBBHHB",0,0,2,0,0,0))
fp.write(struct.pack("<HHHHBB",0,HEIGHT-1,WIDTH,HEIGHT,32,7+32))
for l in g:
	for v in l:
		fp.write("\x00\x00\x00\x00" if v == None else v + "\xFF")
fp.close()