updated example map generator python script

genmap.py

@@ -1,17 +1,12 @@
-#!/usr/bin/python
+#!/usr/bin/python2
 
-"
-This is an example script that generates some valid map data.
-"
+# This is an example script that generates some valid map data.
 
 import struct
 import random
-
-def getrand():
-	i = random.randrange(0,2)
-	if i==0:
-		return 0
-	return 254
+import os
+import sys
+from pnoise import pnoise
 
 """
 Map format:
@@ -25,18 +20,72 @@ ffff = -1
 0001 =  1
 """
 
-f = open("map/sectors/00000000/ffff", "wb")
+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
 
-# version
-f.write(struct.pack('B', 2))
-# is_underground
-f.write(struct.pack('B', 0))
+def getrand():
+	i = random.randrange(0,2)
+	if i==0:
+		return 0
+	return 254
 
-for i in range(0,16*16*16):
-	# Material content
-	f.write(struct.pack('B', getrand()))
-	# Brightness
-	f.write(struct.pack('B', 15))
+def writeblock(mapdir, px,py,pz, version):
+	sectordir = mapdir + "/sectors/" + to4h(px) + to4h(pz)
+	
+	try:
+		os.makedirs(sectordir)
+	except OSError:
+		pass
 
-f.close()
+	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