Messed around with genmap.py. Now supports format version 17.

master
Perttu Ahola 2011-06-05 00:10:06 +03:00
parent f07e445f80
commit a649d43fe7
5 changed files with 241 additions and 56 deletions

280
genmap.py
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@ -6,19 +6,42 @@ import struct
import random
import os
import sys
import zlib
import array
from pnoise import pnoise
"""
Map format:
map/sectors/XXXXZZZZ/YYYY
# 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
#
XXXX,YYYY,ZZZZ = coordinates in hexadecimal
# Seed for generating terrain
SEED = 0
fffe = -2
ffff = -1
0000 = 0
0001 = 1
"""
# 0=old, 1=new
SECTOR_DIR_FORMAT = 1
mapdir = "world"
def to4h(i):
s = "";
@ -28,64 +51,221 @@ def to4h(i):
s += '{0:1x}'.format((i>>0) & 0x000f)
return s
def getrand():
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
def writeblock(mapdir, px,py,pz, version):
sectordir = mapdir + "/sectors/" + to4h(px) + to4h(pz)
# 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 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))
if f == None:
return
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))
# 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()
mapdir = "map"
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)
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)
# 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

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@ -223,6 +223,8 @@ FIXME: The new optimized map sending doesn't sometimes send enough blocks
* Take player's walking direction into account in GetNextBlocks
TODO: Map saving should be done by EmergeThread
Environment:
------------

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@ -5540,9 +5540,11 @@ void ServerMap::loadBlock(std::string sectordir, std::string blockfile, MapSecto
catch(SerializationError &e)
{
dstream<<"WARNING: Invalid block data on disk "
"(SerializationError). Ignoring. "
"A new one will be generated."
"(SerializationError). "
"what()="<<e.what()
<<std::endl;
//" Ignoring. A new one will be generated.
assert(0);
// TODO: Backup file; name is in fullpath.
}

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@ -2450,7 +2450,8 @@ void MapBlock::deSerialize(std::istream &is, u8 version)
std::string s = os.str();
if(s.size() != nodecount*3)
throw SerializationError
("MapBlock::deSerialize: invalid format");
("MapBlock::deSerialize: decompress resulted in size"
" other than nodecount*3");
// Set contents
for(u32 i=0; i<nodecount; i++)

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@ -128,7 +128,7 @@ void decompressZlib(std::istream &is, std::ostream &os)
ret = inflateInit(&z);
if(ret != Z_OK)
throw SerializationError("compressZlib: inflateInit failed");
throw SerializationError("dcompressZlib: inflateInit failed");
z.avail_in = 0;
@ -162,7 +162,7 @@ void decompressZlib(std::istream &is, std::ostream &os)
|| status == Z_MEM_ERROR)
{
zerr(status);
throw SerializationError("compressZlib: inflate failed");
throw SerializationError("decompressZlib: inflate failed");
}
int count = bufsize - z.avail_out;
//dstream<<"count="<<count<<std::endl;
@ -182,7 +182,7 @@ void decompressZlib(std::istream &is, std::ostream &os)
{
dstream<<"unget #"<<i<<" failed"<<std::endl;
dstream<<"fail="<<is.fail()<<" bad="<<is.bad()<<std::endl;
throw SerializationError("compressZlib: unget failed");
throw SerializationError("decompressZlib: unget failed");
}
}