minetestmapper/autogenerating-colors.txt

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==FILE== mods/dumpnodes/init.lua
local function nd_get_tiles(nd)
if nd.tiles then
return nd.tiles
elseif nd.tile_images then
return nd.tile_images
end
return nil
end
local function pairs_s(dict)
local keys = {}
for k in pairs(dict) do
table.insert(keys, k)
end
table.sort(keys)
return ipairs(keys)
end
minetest.register_chatcommand("dumpnodes", {
params = "",
description = "",
func = function(plname, param)
local n = 0
local ntbl = {}
for _, nn in pairs_s(minetest.registered_nodes) do
local nd = minetest.registered_nodes[nn]
local prefix, name = nn:match('(.*):(.*)')
if prefix == nil or name == nil or prefix == '' or name == '' then
print("ignored(1): " .. nn)
else
if ntbl[prefix] == nil then
ntbl[prefix] = {}
end
ntbl[prefix][name] = nd
end
end
local out, err = io.open('nodes.txt', 'wb')
if not out then
return true, "io.open(): " .. err
end
for _, prefix in pairs_s(ntbl) do
local nodes = ntbl[prefix]
out:write('# ' .. prefix .. '\n')
for _, name in pairs_s(nodes) do
local nd = nodes[name]
if nd.drawtype ~= 'airlike' and nd_get_tiles(nd) ~= nil then
local tl = nd_get_tiles(nd)[1]
if type(tl) == 'table' then
tl = tl.name
end
tl = (tl .. '^'):match('(.-)^')
out:write(prefix .. ':' .. name .. ' ' .. tl .. '\n')
n = n + 1
else
print("ignored(2): " .. prefix .. ':' .. name)
end
end
out:write('\n')
end
out:close()
return true, n .. " nodes dumped."
end,
})
==FILE== avgcolor.py
#!/usr/bin/env python
import sys
from PIL import Image
def tsum(a, b):
return tuple(sum(e) for e in zip(a, b))
if len(sys.argv) < 2:
print("Prints average color (RGB) of input image")
print("Usage: %s <input>" % sys.argv[0])
exit(1)
inp = Image.open(sys.argv[1])
inp = inp.convert('RGBA')
ind = inp.load()
cl = (0, 0, 0)
counted = 0
for x in range(inp.size[0]):
for y in range(inp.size[1]):
px = ind[x, y]
if px[3] < 128:
continue
cl = tsum(cl, px[:3])
counted = counted + 1
if counted == 0:
sys.stderr.write("didn't find avg. color for %s\n" % sys.argv[1])
print("0 0 0")
exit(0)
cl = tuple(int(n / counted) for n in cl)
print("%d %d %d" % cl)
==SCRIPT==
#!/bin/bash -e
AVGCOLOR_PATH=/path/to/avgcolor.py
MTGAME_PATH=/path/to/minetest_game
NODESTXT_PATH=./nodes.txt
COLORSTXT_PATH=./colors.txt
while read -r p; do
set -- junk $p
shift
if [[ ! $1 == "#" && ! $1 == "" ]]; then
echo $1 `python $AVGCOLOR_PATH $(find $MTGAME_PATH -type f -name $2)`
echo $1 1>&2
else
echo "$p"
fi
done < $NODESTXT_PATH > $COLORSTXT_PATH
# Use nicer colors for water and lava:
sed -re 's/^default:(river_)?water_([^ ]+) [0-9 ]+$/default:\1water_\2 39 66 106 128 224/g' $COLORSTXT_PATH -i
sed -re 's/^default:lava_([^ ]+) [0-9 ]+$/default:lava_\1 255 100 0/g' $COLORSTXT_PATH -i
# Add transparency to glass nodes:
sed -re 's/^default:(.*glass) ([0-9 ]+)$/default:\1 \2 64 16/g' $COLORSTXT_PATH -i
sed -re 's/^doors:(.*glass[^ ]*) ([0-9 ]+)$/doors:\1 \2 64 16/g' $COLORSTXT_PATH -i
# Fix xpanes color:
sed -re 's/^xpanes:(pane_[0-9]+|bar_[0-9]+) [0-9 ]+$/xpanes:\1 194 194 227 64 16/g' $COLORSTXT_PATH -i
==INSTRUCTIONS==
1) Make sure avgcolors.py outputs the usage instructions
2) Add the dumpnodes mod to Minetest
3) Create a world and load dumpnodes & all mods you want to generate colors for
4) Execute /dumpnodes ingame
5) Run the script to generate colors.txt (make sure to replace /path/to/... with the actual paths)