forked from Mirrorlandia_minetest/minetest
Cleanup root
These scripts should not be in the root but in util/ and in fact they are, so let's get rid of these.
This commit is contained in:
Giuseppe Bilotta
parent
c4b707bca2
commit
dc16820e02
271
genmap.py
271
genmap.py
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#!/usr/bin/python2
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# This is an example script that generates some valid map data.
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import struct
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import random
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import os
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import sys
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import zlib
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import array
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from pnoise import pnoise
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# Old directory format:
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# world/sectors/XXXXZZZZ/YYYY
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# XXXX,YYYY,ZZZZ = coordinates in hexadecimal
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# fffe = -2
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# ffff = -1
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# 0000 = 0
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# 0001 = 1
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#
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# New directory format:
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# world/sectors2/XXX/ZZZ/YYYY
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# XXX,YYYY,ZZZ = coordinates in hexadecimal
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# fffe = -2
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# ffff = -1
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# 0000 = 0
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# 0001 = 1
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# ffe = -2
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# fff = -1
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# 000 = 0
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# 001 = 1
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#
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# For more proper file format documentation, refer to mapformat.txt
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# For node type documentation, refer to mapnode.h
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# NodeMetadata documentation is not complete, refer to nodemeta.cpp
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#
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# Seed for generating terrain
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SEED = 0
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# 0=old, 1=new
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SECTOR_DIR_FORMAT = 1
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mapdir = "world"
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def to4h(i):
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s = "";
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s += '{0:1x}'.format((i>>12) & 0x000f)
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s += '{0:1x}'.format((i>>8) & 0x000f)
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s += '{0:1x}'.format((i>>4) & 0x000f)
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s += '{0:1x}'.format((i>>0) & 0x000f)
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return s
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def to3h(i):
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s = "";
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s += '{0:1x}'.format((i>>8) & 0x000f)
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s += '{0:1x}'.format((i>>4) & 0x000f)
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s += '{0:1x}'.format((i>>0) & 0x000f)
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return s
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def get_sector_dir(px, pz):
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global SECTOR_DIR_FORMAT
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if SECTOR_DIR_FORMAT == 0:
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return "/sectors/"+to4h(px)+to4h(pz)
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elif SECTOR_DIR_FORMAT == 1:
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return "/sectors2/"+to3h(px)+"/"+to3h(pz)
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else:
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assert(0)
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def getrand_air_stone():
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i = random.randrange(0,2)
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if i==0:
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return 0
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return 254
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# 3-dimensional vector (position)
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class v3:
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def __init__(self, x=0, y=0, z=0):
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self.X = x
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self.Y = y
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self.Z = z
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class NodeMeta:
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def __init__(self, type_id, data):
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self.type_id = type_id
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self.data = data
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class StaticObject:
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def __init__(self):
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self.type_id = 0
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self.data = ""
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def ser_u16(i):
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return chr((i>>8)&0xff) + chr((i>>0)&0xff)
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def ser_u32(i):
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return (chr((i>>24)&0xff) + chr((i>>16)&0xff)
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+ chr((i>>8)&0xff) + chr((i>>0)&0xff))
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# A 16x16x16 chunk of map
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class MapBlock:
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def __init__(self):
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self.content = array.array('B')
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self.param1 = array.array('B')
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self.param2 = array.array('B')
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for i in range(16*16*16):
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# Initialize to air
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self.content.append(254)
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# Full light on sunlight, none when no sunlight
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self.param1.append(15)
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# No additional parameters
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self.param2.append(0)
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# key = v3 pos
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# value = NodeMeta
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self.nodemeta = {}
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# key = v3 pos
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# value = StaticObject
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self.static_objects = {}
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def set_content(self, v3, b):
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self.content[v3.Z*16*16+v3.Y*16+v3.X] = b
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def set_param1(self, v3, b):
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self.param1[v3.Z*16*16+v3.Y*16+v3.X] = b
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def set_param2(self, v3, b):
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self.param2[v3.Z*16*16+v3.Y*16+v3.X] = b
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# Get data for serialization. Returns a string.
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def serialize_data(self):
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s = ""
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for i in range(16*16*16):
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s += chr(self.content[i])
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for i in range(16*16*16):
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s += chr(self.param1[i])
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for i in range(16*16*16):
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s += chr(self.param2[i])
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return s
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def serialize_nodemeta(self):
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s = ""
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s += ser_u16(1)
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s += ser_u16(len(self.nodemeta))
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for pos, meta in self.nodemeta.items():
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pos_i = pos.Z*16*16 + pos.Y*16 + pos.X
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s += ser_u16(pos_i)
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s += ser_u16(meta.type_id)
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s += ser_u16(len(meta.data))
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s += meta.data
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return s
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def serialize_staticobj(self):
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s = ""
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s += chr(0)
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s += ser_u16(len(self.static_objects))
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for pos, obj in self.static_objects.items():
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pos_i = pos.Z*16*16 + pos.Y*16 + pos.X
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s += ser_s32(pos.X*1000)
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s += ser_s32(pos.Y*1000)
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s += ser_s32(pos.Z*1000)
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s += ser_u16(obj.type_id)
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s += ser_u16(len(obj.data))
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s += obj.data
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return s
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def writeblock(mapdir, px,py,pz, block):
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sectordir = mapdir + get_sector_dir(px, pz);
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try:
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os.makedirs(sectordir)
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except OSError:
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pass
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path = sectordir+"/"+to4h(py)
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print("writing block file "+path)
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f = open(sectordir+"/"+to4h(py), "wb")
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if f == None:
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return
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# version
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version = 17
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f.write(struct.pack('B', version))
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# flags
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# 0x01=is_undg, 0x02=dn_diff, 0x04=lighting_expired
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flags = 0 + 0x02 + 0x04
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f.write(struct.pack('B', flags))
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# data
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c_obj = zlib.compressobj()
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c_obj.compress(block.serialize_data())
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f.write(struct.pack('BB', 0x78, 0x9c)) # zlib magic number
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f.write(c_obj.flush())
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# node metadata
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c_obj = zlib.compressobj()
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c_obj.compress(block.serialize_nodemeta())
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f.write(struct.pack('BB', 0x78, 0x9c)) # zlib magic number
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f.write(c_obj.flush())
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# mapblockobject count
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f.write(ser_u16(0))
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# static objects
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f.write(block.serialize_staticobj())
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# timestamp
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f.write(ser_u32(0xffffffff))
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f.close()
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for z0 in range(-1,3):
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for x0 in range(-1,3):
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for y0 in range(-1,3):
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print("generating block "+str(x0)+","+str(y0)+","+str(z0))
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#v3 blockp = v3(x0,y0,z0)
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# Create a MapBlock
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block = MapBlock()
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# Generate stuff in it
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for z in range(0,16):
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for x in range(0,16):
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h = 20.0*pnoise((x0*16+x)/100.,(z0*16+z)/100.,SEED+0)
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h += 5.0*pnoise((x0*16+x)/25.,(z0*16+z)/25.,SEED+0)
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if pnoise((x0*16+x)/25.,(z0*16+z)/25.,SEED+92412) > 0.05:
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h += 10
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#print("r="+str(r))
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# This enables comparison by ==
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h = int(h)
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for y in range(0,16):
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p = v3(x,y,z)
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b = 254
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y1 = y0*16+y
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if y1 <= h-3:
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b = 0 #stone
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elif y1 <= h and y1 <= 0:
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b = 8 #mud
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elif y1 == h:
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b = 1 #grass
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elif y1 < h:
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b = 8 #mud
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elif y1 <= 1:
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b = 9 #water
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# Material content
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block.set_content(p, b)
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# Place a sign at the center at surface level.
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# Placing a sign means placing the sign node and
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# adding node metadata to the mapblock.
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if x == 8 and z == 8 and y0*16 <= h-1 and (y0+1)*16-1 > h:
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p = v3(8,h+1-y0*16,8)
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# 14 = Sign
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content_type = 14
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block.set_content(p, content_type)
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# This places the sign to the bottom of the cube.
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# Working values: 0x01, 0x02, 0x04, 0x08, 0x10, 0x20
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block.set_param2(p, 0x08)
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# Then add metadata to hold the text of the sign
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s = "Hello at sector ("+str(x0)+","+str(z0)+")"
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meta = NodeMeta(content_type, ser_u16(len(s))+s)
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block.nodemeta[p] = meta
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# Write it on disk
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writeblock(mapdir, x0,y0,z0, block)
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#END
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102
pnoise.py
102
pnoise.py
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#
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# A python perlin noise implementation, from
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# http://www.fundza.com/c4serious/noise/perlin/perlin.html
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#
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# This is used for testing how to create maps with a python script.
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#
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import math
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p = (
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151,160,137,91,90,15,131,13,201,95,96,53,194,233,7,225,140,36,103,
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30,69,142,8,99,37,240,21,10,23,190,6,148,247,120,234,75,0,26,197,
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62,94,252,219,203,117,35,11,32,57,177,33,88,237,149,56,87,174,20,
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125,136,171,168,68,175,74,165,71,134,139,48,27,166,77,146,158,231,
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83,111,229,122,60,211,133,230,220,105,92,41,55,46,245,40,244,102,
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143,54,65,25,63,161,1,216,80,73,209,76,132,187,208,89,18,169,200,
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196,135,130,116,188,159,86,164,100,109,198,173,186,3,64,52,217,226,
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250,124,123,5,202,38,147,118,126,255,82,85,212,207,206,59,227,47,16,
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58,17,182,189,28,42,223,183,170,213,119,248,152,2,44,154,163,70,
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221,153,101,155,167,43,172,9,129,22,39,253,19,98,108,110,79,113,
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224,232,178,185,112,104,218,246,97,228,251,34,242,193,238,210,144,
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12,191,179,162,241,81,51,145,235,249,14,239,107,49,192,214,31,181,
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199,106,157,184,84,204,176,115,121,50,45,127,4,150,254,138,236,
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205,93,222,114,67,29,24,72,243,141,128,195,78,66,215,61,156,180,
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151,160,137,91,90,15,131,13,201,95,96,53,194,233,7,225,140,36,103,
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30,69,142,8,99,37,240,21,10,23,190,6,148,247,120,234,75,0,26,197,
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62,94,252,219,203,117,35,11,32,57,177,33,88,237,149,56,87,174,20,
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125,136,171,168,68,175,74,165,71,134,139,48,27,166,77,146,158,231,
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83,111,229,122,60,211,133,230,220,105,92,41,55,46,245,40,244,102,
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143,54,65,25,63,161,1,216,80,73,209,76,132,187,208,89,18,169,200,
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196,135,130,116,188,159,86,164,100,109,198,173,186,3,64,52,217,226,
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250,124,123,5,202,38,147,118,126,255,82,85,212,207,206,59,227,47,16,
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58,17,182,189,28,42,223,183,170,213,119,248,152,2,44,154,163,70,
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221,153,101,155,167,43,172,9,129,22,39,253,19,98,108,110,79,113,
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224,232,178,185,112,104,218,246,97,228,251,34,242,193,238,210,144,
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12,191,179,162,241,81,51,145,235,249,14,239,107,49,192,214,31,181,
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199,106,157,184,84,204,176,115,121,50,45,127,4,150,254,138,236,
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205,93,222,114,67,29,24,72,243,141,128,195,78,66,215,61,156,180)
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def lerp(t, a, b):
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return a + t * (b - a)
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def fade(t):
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return t * t * t * (t * (t * 6 - 15) + 10)
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def grad(hash, x, y, z):
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h = hash & 15
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if h < 8:
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u = x
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else:
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u = y
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if h < 4:
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v = y
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elif h == 12 or h == 14:
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v = x
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else:
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v = z
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if h & 1 != 0:
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u = -u
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if h & 2 != 0:
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v = -v
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return u + v
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def pnoise(x, y, z):
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global p
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X = int(math.floor(x)) & 255
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Y = int(math.floor(y)) & 255
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Z = int(math.floor(z)) & 255
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x -= math.floor(x)
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y -= math.floor(y)
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z -= math.floor(z)
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u = fade(x)
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v = fade(y)
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w = fade(z)
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A = p[X] + Y
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AA = p[A] + Z
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AB = p[A + 1] + Z
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B = p[X + 1] + Y
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BA = p[B] + Z
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||||||
BB = p[B + 1] + Z
|
|
||||||
|
|
||||||
pAA = p[AA]
|
|
||||||
pAB = p[AB]
|
|
||||||
pBA = p[BA]
|
|
||||||
pBB = p[BB]
|
|
||||||
pAA1 = p[AA + 1]
|
|
||||||
pBA1 = p[BA + 1]
|
|
||||||
pAB1 = p[AB + 1]
|
|
||||||
pBB1 = p[BB + 1]
|
|
||||||
|
|
||||||
gradAA = grad(pAA, x, y, z)
|
|
||||||
gradBA = grad(pBA, x-1, y, z)
|
|
||||||
gradAB = grad(pAB, x, y-1, z)
|
|
||||||
gradBB = grad(pBB, x-1, y-1, z)
|
|
||||||
gradAA1 = grad(pAA1,x, y, z-1)
|
|
||||||
gradBA1 = grad(pBA1,x-1, y, z-1)
|
|
||||||
gradAB1 = grad(pAB1,x, y-1, z-1)
|
|
||||||
gradBB1 = grad(pBB1,x-1, y-1, z-1)
|
|
||||||
return lerp(w,
|
|
||||||
lerp(v, lerp(u, gradAA, gradBA), lerp(u, gradAB, gradBB)),
|
|
||||||
lerp(v, lerp(u, gradAA1,gradBA1),lerp(u, gradAB1,gradBB1)))
|
|
||||||
Loading…
Reference in New Issue
Block a user