minetest/genmap.py

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#!/usr/bin/python2
# This is an example script that generates some valid map data.
2011-04-02 12:44:06 +02:00
import struct
import random
import os
import sys
from pnoise import pnoise
"""
Map format:
map/sectors/XXXXZZZZ/YYYY
XXXX,YYYY,ZZZZ = coordinates in hexadecimal
fffe = -2
ffff = -1
0000 = 0
0001 = 1
"""
def to4h(i):
s = "";
s += '{0:1x}'.format((i>>12) & 0x000f)
s += '{0:1x}'.format((i>>8) & 0x000f)
s += '{0:1x}'.format((i>>4) & 0x000f)
s += '{0:1x}'.format((i>>0) & 0x000f)
return s
def getrand():
i = random.randrange(0,2)
if i==0:
return 0
return 254
def writeblock(mapdir, px,py,pz, version):
sectordir = mapdir + "/sectors/" + to4h(px) + to4h(pz)
try:
os.makedirs(sectordir)
except OSError:
pass
f = open(sectordir+"/"+to4h(py), "wb")
if version == 0:
# version
f.write(struct.pack('B', 0))
# is_underground
f.write(struct.pack('B', 0))
elif version == 2:
# version
f.write(struct.pack('B', 2))
# is_underground
f.write(struct.pack('B', 0))
for z in range(0,16):
for y in range(0,16):
for x in range(0,16):
b = 254
r = 20.0*pnoise((px*16+x)/100.,(pz*16+z)/100.,0)
r += 5.0*pnoise((px*16+x)/25.,(pz*16+z)/25.,0)
#print("r="+str(r))
y1 = py*16+y
if y1 <= r-3:
b = 0 #stone
elif y1 <= r:
b = 1 #grass
elif y1 <= 1:
b = 9 #water
if version == 0:
# Material content
f.write(struct.pack('B', b))
elif version == 2:
# Material content
f.write(struct.pack('B', b))
# Brightness
f.write(struct.pack('B', 15))
f.close()
mapdir = "map"
for z in range(-2,3):
for y in range(-1,2):
for x in range(-2,3):
print("generating block "+str(x)+","+str(y)+","+str(z))
writeblock(mapdir, x,y,z, 0)
#END