exportImages.py

"""
Copyright 2014-2015 darkf

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
"""

# Converts data/art/*/*.FRM images to .png images

import sys, os, glob, json, time
import pal
import frmpixels

def flatten(l):
	return [item for sublist in l for item in sublist]

def main():
	if len(sys.argv) < 4:
		print "USAGE: %s PALETTE DATA_DIR OUT_DIR [--no-map] [--only-map] [--update]" % sys.argv[0]
		print "PALETTE is likely data/color.pal, and DATA_DIR is likely data/"
		sys.exit(1)

	PALETTE = sys.argv[1]
	DATA_DIR = sys.argv[2]
	OUT_DIR = sys.argv[3]

	if not os.path.exists(OUT_DIR):
		os.mkdir(OUT_DIR)

	exportImage = '--only-map' not in sys.argv

	palette = pal.readPAL(open(PALETTE, "rb"))
	palette = flatten([r, g, b] for r, g, b in palette)

	subdirs = ("critters", "skilldex", "inven", "tiles", "critters", "items", "scenery", "walls", "misc", "intrface") # etc
	imageInfo = {}

	for subdir in subdirs:
		dir = '%s/%s' % (OUT_DIR, subdir)
		if not os.path.exists(dir):
			os.mkdir(dir)

	subdirFRMs = [glob.glob("%s/art/%s/*.frm" % (DATA_DIR, subdir)) for subdir in subdirs]
	totalNum = sum(len(x) for x in subdirFRMs)

	if '--update' in sys.argv:
		imageMap = json.load(open('%s/imageMap.json' % OUT_DIR, "r"))

	i = 1
	for subdirIdx,FRMs in enumerate(subdirFRMs):
		subdir = subdirs[subdirIdx]
		
		for FRM in FRMs:
			name = '%s/%s' % (subdir, os.path.splitext(os.path.basename(FRM))[0].lower())
			outpath = "%s/%s.png" % (OUT_DIR, name)

			if '--update' in sys.argv and os.path.exists(outpath) and ('art/'+name) in imageMap:
				# already exists, skip it
				i += 1
				continue

			print "[%d/%d/%d] %s..." % (i, len(FRMs), totalNum, name)
			imageInfo['art/'+name] = frmpixels.exportFRM(FRM, outpath, palette, exportImage)

			i += 1

	if '--no-map' not in sys.argv:
		if '--update' in sys.argv:
			# merge our changes into the existing imageMap
			imageMap.update(imageInfo)
			imageInfo = imageMap

		print "writing image map..."
		
		# write new imageMap
		json.dump(imageInfo, open('%s/imageMap.json' % OUT_DIR, "w"))


if __name__ == '__main__':
	start_time = time.clock()
	main()
	print("--- %s seconds ---" % (time.clock() - start_time))