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-rwxr-xr-xutil/old/genmap.py271
-rw-r--r--util/old/pnoise.py102
2 files changed, 373 insertions, 0 deletions
diff --git a/util/old/genmap.py b/util/old/genmap.py
new file mode 100755
index 000000000..6b36269d5
--- /dev/null
+++ b/util/old/genmap.py
@@ -0,0 +1,271 @@
+#!/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
diff --git a/util/old/pnoise.py b/util/old/pnoise.py
new file mode 100644
index 000000000..fcab5ac15
--- /dev/null
+++ b/util/old/pnoise.py
@@ -0,0 +1,102 @@
+#
+# A python perlin noise implementation, from
+# http://www.fundza.com/c4serious/noise/perlin/perlin.html
+#
+# This is used for testing how to create maps with a python script.
+#
+
+import math
+p = (
+151,160,137,91,90,15,131,13,201,95,96,53,194,233,7,225,140,36,103,
+30,69,142,8,99,37,240,21,10,23,190,6,148,247,120,234,75,0,26,197,
+62,94,252,219,203,117,35,11,32,57,177,33,88,237,149,56,87,174,20,
+125,136,171,168,68,175,74,165,71,134,139,48,27,166,77,146,158,231,
+83,111,229,122,60,211,133,230,220,105,92,41,55,46,245,40,244,102,
+143,54,65,25,63,161,1,216,80,73,209,76,132,187,208,89,18,169,200,
+196,135,130,116,188,159,86,164,100,109,198,173,186,3,64,52,217,226,
+250,124,123,5,202,38,147,118,126,255,82,85,212,207,206,59,227,47,16,
+58,17,182,189,28,42,223,183,170,213,119,248,152,2,44,154,163,70,
+221,153,101,155,167,43,172,9,129,22,39,253,19,98,108,110,79,113,
+224,232,178,185,112,104,218,246,97,228,251,34,242,193,238,210,144,
+12,191,179,162,241,81,51,145,235,249,14,239,107,49,192,214,31,181,
+199,106,157,184,84,204,176,115,121,50,45,127,4,150,254,138,236,
+205,93,222,114,67,29,24,72,243,141,128,195,78,66,215,61,156,180,
+151,160,137,91,90,15,131,13,201,95,96,53,194,233,7,225,140,36,103,
+30,69,142,8,99,37,240,21,10,23,190,6,148,247,120,234,75,0,26,197,
+62,94,252,219,203,117,35,11,32,57,177,33,88,237,149,56,87,174,20,
+125,136,171,168,68,175,74,165,71,134,139,48,27,166,77,146,158,231,
+83,111,229,122,60,211,133,230,220,105,92,41,55,46,245,40,244,102,
+143,54,65,25,63,161,1,216,80,73,209,76,132,187,208,89,18,169,200,
+196,135,130,116,188,159,86,164,100,109,198,173,186,3,64,52,217,226,
+250,124,123,5,202,38,147,118,126,255,82,85,212,207,206,59,227,47,16,
+58,17,182,189,28,42,223,183,170,213,119,248,152,2,44,154,163,70,
+221,153,101,155,167,43,172,9,129,22,39,253,19,98,108,110,79,113,
+224,232,178,185,112,104,218,246,97,228,251,34,242,193,238,210,144,
+12,191,179,162,241,81,51,145,235,249,14,239,107,49,192,214,31,181,
+199,106,157,184,84,204,176,115,121,50,45,127,4,150,254,138,236,
+205,93,222,114,67,29,24,72,243,141,128,195,78,66,215,61,156,180)
+
+def lerp(t, a, b):
+ return a + t * (b - a)
+
+def fade(t):
+ return t * t * t * (t * (t * 6 - 15) + 10)
+
+def grad(hash, x, y, z):
+ h = hash & 15
+ if h < 8:
+ u = x
+ else:
+ u = y
+ if h < 4:
+ v = y
+ elif h == 12 or h == 14:
+ v = x
+ else:
+ v = z
+ if h & 1 != 0:
+ u = -u
+ if h & 2 != 0:
+ v = -v
+ return u + v
+
+def pnoise(x, y, z):
+ global p
+ X = int(math.floor(x)) & 255
+ Y = int(math.floor(y)) & 255
+ Z = int(math.floor(z)) & 255
+ x -= math.floor(x)
+ y -= math.floor(y)
+ z -= math.floor(z)
+
+ u = fade(x)
+ v = fade(y)
+ w = fade(z)
+
+ A = p[X] + Y
+ AA = p[A] + Z
+ AB = p[A + 1] + Z
+ B = p[X + 1] + Y
+ BA = p[B] + Z
+ 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)))
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-14 07:29:00 +0000