minetestmapper/util/generate_colorstxt.py

184 lines
5.3 KiB
Python
Executable File

#!/usr/bin/env python3
import sys
import os.path
import getopt
import re
from math import sqrt
try:
from PIL import Image
except:
print("Could not load image routines, install PIL ('pillow' on pypi)!", file=sys.stderr)
exit(1)
############
############
# Instructions for generating a colors.txt file for custom games and/or mods:
# 1) Add the dumpnodes mod to a Minetest world with the chosen game and mods enabled.
# 2) Join ingame and run the /dumpnodes chat command.
# 3) Run this script and poin it to the installation path of the game using -g,
# the path(s) where mods are stored using -m and the nodes.txt in your world folder.
# Example command line:
# ./util/generate_colorstxt.py --game /usr/share/minetest/games/minetest_game \
# -m ~/.minetest/mods ~/.minetest/worlds/my_world/nodes.txt
# 4) Copy the resulting colors.txt file to your world folder or to any other places
# and use it with minetestmapper's --colors option.
###########
###########
# minimal sed syntax, s|match|replace| and /match/d supported
REPLACEMENTS = [
# Delete some nodes that are usually hidden
r'/^fireflies:firefly /d',
r'/^butterflies:butterfly_/d',
# Nicer colors for water and lava
r's/^(default:(river_)?water_(flowing|source)) [0-9 ]+$/\1 39 66 106 128 224/',
r's/^(default:lava_(flowing|source)) [0-9 ]+$/\1 255 100 0/',
# Transparency for glass nodes and panes
r's/^(default:.*glass) ([0-9 ]+)$/\1 \2 64 16/',
r's/^(doors:.*glass[^ ]*) ([0-9 ]+)$/\1 \2 64 16/',
r's/^(xpanes:.*(pane|bar)[^ ]*) ([0-9 ]+)$/\1 \3 64 16/',
]
def usage():
print("Usage: generate_colorstxt.py [options] [input file] [output file]")
print("If not specified the input file defaults to ./nodes.txt and the output file to ./colors.txt")
print(" -g / --game <folder>\t\tSet path to the game (for textures), required")
print(" -m / --mods <folder>\t\tAdd search path for mod textures")
print(" --replace <file>\t\tLoad replacements from file (ADVANCED)")
def collect_files(path):
dirs = []
with os.scandir(path) as it:
for entry in it:
if entry.name[0] == '.': continue
if entry.is_dir():
dirs.append(entry.path)
continue
if entry.is_file() and '.' in entry.name:
if entry.name not in textures.keys():
textures[entry.name] = entry.path
for path2 in dirs:
collect_files(path2)
def average_color(filename):
inp = Image.open(filename).convert('RGBA')
data = inp.load()
c0, c1, c2 = [], [], []
for x in range(inp.size[0]):
for y in range(inp.size[1]):
px = data[x, y]
if px[3] < 128: continue # alpha
c0.append(px[0]**2)
c1.append(px[1]**2)
c2.append(px[2]**2)
if len(c0) == 0:
print(f"didn't find color for '{os.path.basename(filename)}'", file=sys.stderr)
return "0 0 0"
c0 = sqrt(sum(c0) / len(c0))
c1 = sqrt(sum(c1) / len(c1))
c2 = sqrt(sum(c2) / len(c2))
return "%d %d %d" % (c0, c1, c2)
def apply_sed(line, exprs):
for expr in exprs:
if expr[0] == '/':
if not expr.endswith("/d"): raise ValueError()
if re.search(expr[1:-2], line):
return ''
elif expr[0] == 's':
expr = expr.split(expr[1])
if len(expr) != 4 or expr[3] != '': raise ValueError()
line = re.sub(expr[1], expr[2], line)
else:
raise ValueError()
return line
#
try:
opts, args = getopt.getopt(sys.argv[1:], "hg:m:", ["help", "game=", "mods=", "replace="])
except getopt.GetoptError as e:
print(str(e))
exit(1)
if ('-h', '') in opts or ('--help', '') in opts:
usage()
exit(0)
input_file = "./nodes.txt"
output_file = "./colors.txt"
texturepaths = []
try:
gamepath = next(o[1] for o in opts if o[0] in ('-g', '--game'))
if not os.path.isdir(os.path.join(gamepath, "mods")):
print(f"'{gamepath}' doesn't exist or does not contain a game.", file=sys.stderr)
exit(1)
texturepaths.append(os.path.join(gamepath, "mods"))
except StopIteration:
print("No game path set but one is required. (see --help)", file=sys.stderr)
exit(1)
try:
tmp = next(o[1] for o in opts if o[0] == "--replace")
REPLACEMENTS.clear()
with open(tmp, 'r') as f:
for line in f:
if not line or line[0] == '#': continue
REPLACEMENTS.append(line.strip())
except StopIteration:
pass
for o in opts:
if o[0] not in ('-m', '--mods'): continue
if not os.path.isdir(o[1]):
print(f"Given path '{o[1]}' does not exist.'", file=sys.stderr)
exit(1)
texturepaths.append(o[1])
if len(args) > 2:
print("Too many arguments.", file=sys.stderr)
exit(1)
if len(args) > 1:
output_file = args[1]
if len(args) > 0:
input_file = args[0]
if not os.path.exists(input_file) or os.path.isdir(input_file):
print(f"Input file '{input_file}' does not exist.", file=sys.stderr)
exit(1)
#
print(f"Collecting textures from {len(texturepaths)} path(s)... ", end="", flush=True)
textures = {}
for path in texturepaths:
collect_files(path)
print("done")
print("Processing nodes...")
fin = open(input_file, 'r')
fout = open(output_file, 'w')
n = 0
for line in fin:
line = line.rstrip('\r\n')
if not line or line[0] == '#':
fout.write(line + '\n')
continue
node, tex = line.split(" ")
if not tex or tex == "blank.png":
continue
elif tex not in textures.keys():
print(f"skip {node} texture not found")
continue
color = average_color(textures[tex])
line = f"{node} {color}"
#print(f"ok {node}")
line = apply_sed(line, REPLACEMENTS)
if line:
fout.write(line + '\n')
n += 1
fin.close()
fout.close()
print(f"Done, {n} entries written.")