272 lines
6.0 KiB
Python
Executable File
272 lines
6.0 KiB
Python
Executable File
#!/usr/bin/python2
|
|
|
|
# This is an example script that generates some valid map data.
|
|
|
|
import struct
|
|
import random
|
|
import os
|
|
import sys
|
|
import zlib
|
|
import array
|
|
from pnoise import pnoise
|
|
|
|
# Old directory format:
|
|
# world/sectors/XXXXZZZZ/YYYY
|
|
# XXXX,YYYY,ZZZZ = coordinates in hexadecimal
|
|
# fffe = -2
|
|
# ffff = -1
|
|
# 0000 = 0
|
|
# 0001 = 1
|
|
#
|
|
# New directory format:
|
|
# world/sectors2/XXX/ZZZ/YYYY
|
|
# XXX,YYYY,ZZZ = coordinates in hexadecimal
|
|
# fffe = -2
|
|
# ffff = -1
|
|
# 0000 = 0
|
|
# 0001 = 1
|
|
# ffe = -2
|
|
# fff = -1
|
|
# 000 = 0
|
|
# 001 = 1
|
|
#
|
|
# For more proper file format documentation, refer to mapformat.txt
|
|
# For node type documentation, refer to mapnode.h
|
|
# NodeMetadata documentation is not complete, refer to nodemeta.cpp
|
|
#
|
|
|
|
# Seed for generating terrain
|
|
SEED = 0
|
|
|
|
# 0=old, 1=new
|
|
SECTOR_DIR_FORMAT = 1
|
|
|
|
mapdir = "../world"
|
|
|
|
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 to3h(i):
|
|
s = "";
|
|
s += '{0:1x}'.format((i>>8) & 0x000f)
|
|
s += '{0:1x}'.format((i>>4) & 0x000f)
|
|
s += '{0:1x}'.format((i>>0) & 0x000f)
|
|
return s
|
|
|
|
def get_sector_dir(px, pz):
|
|
global SECTOR_DIR_FORMAT
|
|
if SECTOR_DIR_FORMAT == 0:
|
|
return "/sectors/"+to4h(px)+to4h(pz)
|
|
elif SECTOR_DIR_FORMAT == 1:
|
|
return "/sectors2/"+to3h(px)+"/"+to3h(pz)
|
|
else:
|
|
assert(0)
|
|
|
|
def getrand_air_stone():
|
|
i = random.randrange(0,2)
|
|
if i==0:
|
|
return 0
|
|
return 254
|
|
|
|
# 3-dimensional vector (position)
|
|
class v3:
|
|
def __init__(self, x=0, y=0, z=0):
|
|
self.X = x
|
|
self.Y = y
|
|
self.Z = z
|
|
|
|
class NodeMeta:
|
|
def __init__(self, type_id, data):
|
|
self.type_id = type_id
|
|
self.data = data
|
|
|
|
class StaticObject:
|
|
def __init__(self):
|
|
self.type_id = 0
|
|
self.data = ""
|
|
|
|
def ser_u16(i):
|
|
return chr((i>>8)&0xff) + chr((i>>0)&0xff)
|
|
def ser_u32(i):
|
|
return (chr((i>>24)&0xff) + chr((i>>16)&0xff)
|
|
+ chr((i>>8)&0xff) + chr((i>>0)&0xff))
|
|
|
|
# A 16x16x16 chunk of map
|
|
class MapBlock:
|
|
def __init__(self):
|
|
self.content = array.array('B')
|
|
self.param1 = array.array('B')
|
|
self.param2 = array.array('B')
|
|
for i in range(16*16*16):
|
|
# Initialize to air
|
|
self.content.append(254)
|
|
# Full light on sunlight, none when no sunlight
|
|
self.param1.append(15)
|
|
# No additional parameters
|
|
self.param2.append(0)
|
|
|
|
# key = v3 pos
|
|
# value = NodeMeta
|
|
self.nodemeta = {}
|
|
|
|
# key = v3 pos
|
|
# value = StaticObject
|
|
self.static_objects = {}
|
|
|
|
def set_content(self, v3, b):
|
|
self.content[v3.Z*16*16+v3.Y*16+v3.X] = b
|
|
def set_param1(self, v3, b):
|
|
self.param1[v3.Z*16*16+v3.Y*16+v3.X] = b
|
|
def set_param2(self, v3, b):
|
|
self.param2[v3.Z*16*16+v3.Y*16+v3.X] = b
|
|
|
|
# Get data for serialization. Returns a string.
|
|
def serialize_data(self):
|
|
s = ""
|
|
for i in range(16*16*16):
|
|
s += chr(self.content[i])
|
|
for i in range(16*16*16):
|
|
s += chr(self.param1[i])
|
|
for i in range(16*16*16):
|
|
s += chr(self.param2[i])
|
|
return s
|
|
|
|
def serialize_nodemeta(self):
|
|
s = ""
|
|
s += ser_u16(1)
|
|
s += ser_u16(len(self.nodemeta))
|
|
for pos, meta in self.nodemeta.items():
|
|
pos_i = pos.Z*16*16 + pos.Y*16 + pos.X
|
|
s += ser_u16(pos_i)
|
|
s += ser_u16(meta.type_id)
|
|
s += ser_u16(len(meta.data))
|
|
s += meta.data
|
|
return s
|
|
|
|
def serialize_staticobj(self):
|
|
s = ""
|
|
s += chr(0)
|
|
s += ser_u16(len(self.static_objects))
|
|
for pos, obj in self.static_objects.items():
|
|
pos_i = pos.Z*16*16 + pos.Y*16 + pos.X
|
|
s += ser_s32(pos.X*1000)
|
|
s += ser_s32(pos.Y*1000)
|
|
s += ser_s32(pos.Z*1000)
|
|
s += ser_u16(obj.type_id)
|
|
s += ser_u16(len(obj.data))
|
|
s += obj.data
|
|
return s
|
|
|
|
def writeblock(mapdir, px,py,pz, block):
|
|
|
|
sectordir = mapdir + get_sector_dir(px, pz);
|
|
|
|
try:
|
|
os.makedirs(sectordir)
|
|
except OSError:
|
|
pass
|
|
|
|
path = sectordir+"/"+to4h(py)
|
|
|
|
print("writing block file "+path)
|
|
|
|
f = open(sectordir+"/"+to4h(py), "wb")
|
|
|
|
if f == None:
|
|
return
|
|
|
|
# version
|
|
version = 17
|
|
f.write(struct.pack('B', version))
|
|
|
|
# flags
|
|
# 0x01=is_undg, 0x02=dn_diff, 0x04=lighting_expired
|
|
flags = 0 + 0x02 + 0x04
|
|
f.write(struct.pack('B', flags))
|
|
|
|
# data
|
|
c_obj = zlib.compressobj()
|
|
c_obj.compress(block.serialize_data())
|
|
f.write(struct.pack('BB', 0x78, 0x9c)) # zlib magic number
|
|
f.write(c_obj.flush())
|
|
|
|
# node metadata
|
|
c_obj = zlib.compressobj()
|
|
c_obj.compress(block.serialize_nodemeta())
|
|
f.write(struct.pack('BB', 0x78, 0x9c)) # zlib magic number
|
|
f.write(c_obj.flush())
|
|
|
|
# mapblockobject count
|
|
f.write(ser_u16(0))
|
|
|
|
# static objects
|
|
f.write(block.serialize_staticobj())
|
|
|
|
# timestamp
|
|
f.write(ser_u32(0xffffffff))
|
|
|
|
f.close()
|
|
|
|
for z0 in range(-1,3):
|
|
for x0 in range(-1,3):
|
|
for y0 in range(-1,3):
|
|
print("generating block "+str(x0)+","+str(y0)+","+str(z0))
|
|
#v3 blockp = v3(x0,y0,z0)
|
|
|
|
# Create a MapBlock
|
|
block = MapBlock()
|
|
|
|
# Generate stuff in it
|
|
for z in range(0,16):
|
|
for x in range(0,16):
|
|
h = 20.0*pnoise((x0*16+x)/100.,(z0*16+z)/100.,SEED+0)
|
|
h += 5.0*pnoise((x0*16+x)/25.,(z0*16+z)/25.,SEED+0)
|
|
if pnoise((x0*16+x)/25.,(z0*16+z)/25.,SEED+92412) > 0.05:
|
|
h += 10
|
|
#print("r="+str(r))
|
|
# This enables comparison by ==
|
|
h = int(h)
|
|
for y in range(0,16):
|
|
p = v3(x,y,z)
|
|
b = 254
|
|
y1 = y0*16+y
|
|
if y1 <= h-3:
|
|
b = 0 #stone
|
|
elif y1 <= h and y1 <= 0:
|
|
b = 8 #mud
|
|
elif y1 == h:
|
|
b = 1 #grass
|
|
elif y1 < h:
|
|
b = 8 #mud
|
|
elif y1 <= 1:
|
|
b = 9 #water
|
|
|
|
# Material content
|
|
block.set_content(p, b)
|
|
|
|
# Place a sign at the center at surface level.
|
|
# Placing a sign means placing the sign node and
|
|
# adding node metadata to the mapblock.
|
|
if x == 8 and z == 8 and y0*16 <= h-1 and (y0+1)*16-1 > h:
|
|
p = v3(8,h+1-y0*16,8)
|
|
# 14 = Sign
|
|
content_type = 14
|
|
block.set_content(p, content_type)
|
|
# This places the sign to the bottom of the cube.
|
|
# Working values: 0x01, 0x02, 0x04, 0x08, 0x10, 0x20
|
|
block.set_param2(p, 0x08)
|
|
# Then add metadata to hold the text of the sign
|
|
s = "Hello at sector ("+str(x0)+","+str(z0)+")"
|
|
meta = NodeMeta(content_type, ser_u16(len(s))+s)
|
|
block.nodemeta[p] = meta
|
|
|
|
# Write it on disk
|
|
writeblock(mapdir, x0,y0,z0, block)
|
|
|
|
#END
|