Initial upload

LICENSE

@@ -0,0 +1,117 @@
+CC0 1.0 Universal
+
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README.md

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+# Minetest to POVRAY exporter v0.1
+
+# ToC:
+
+-- INTRODUCTION
+
+-- REQUIREMENTS
+
+-- USAGE
+
+-- KNOWN ERRORS, LIMITATIONS AND TO-DOs
+
+===============================
+
+# INTRODUCTION
+
+"Minetest to POVRAY exporter" (named MtPe for short) is (going to be) a set of scripts to export maps (or parts of) to POVRAY-compatible
+scenery file. Then one is allowed to make renders and animations of the scenery.
+You might ask "Why did you use PHP?" I say "Why not!" It has got several functions that make your life easier (such as string-indexed arrays).
+
+===============================
+
+# REQUIREMENTS
+
+MtPe requires python2, php5, mysql and povray >3.5.
+It is designed to run on linux.
+During development it was tested with povray 3.6 and 3.7, both working well.
+MySQL currently stores world's data exported from sqlite dataset, but sqlite3 functions in php will work as well.
+
+===============================
+
+# USAGE
+
+[TODO]
+
+===============================
+
+# KNOWN ERRORS, LIMITATIONS AND TO-DOs
+
+- POVRAY uses a lot of memory and CPU - it is recommended NOT to run MtPe on the same server that holds the world itself.
+- Due to RAM limitations you need to carefully set range to be exported. Exporting too many chunks will crash POVRAY or hang your machine. Export script will work correctly, as it reads one chunk at a time. Caution: it produces HUGE text files!
+- It is recommended to have pre-existing set of textures and models for POVRAY to work with. The "export_dictionary.php" script will go through any chunk in the world and make POVRAY-compatible files (blocks.inc and blocks_textures.inc) to be modified by the user - one of which holds the blocks and objects, the other holds textures.
+- MySQL is currently being used to store world's data. I'd like to stick with it for now, as I am going to recompile Minetest to use it as a backend. Beware NOT TO USE InnoDB engine there! Use MyISAM as it will run faster.
+- As "export_dictionary.php" has no database to save it's results it will go through EVERY chunk every time you run it. Scanning of 990000 chunks took about 5 hours on a dual core pentium 4 machine with 3GB RAM. Currently it reads 100 chunks at a time from the dataset to the queue. Tuning this value can improve performance.
+- "unzlib.py" and "unpack_coords.py" scripts are just workarounds for me being stupid and unable to write working procedures for unpacking chunk's coordinates and unpacking chunk's data.

dump_for_mysql.py

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+#!/usr/bin/env python
+
+import re
+import fileinput
+
+def this_line_is_useless(line):
+    useless_es = [
+        'BEGIN TRANSACTION',
+        'COMMIT',
+        'sqlite_sequence',
+        'CREATE UNIQUE INDEX',
+        'PRAGMA foreign_keys=OFF',
+    ]
+    for useless in useless_es:
+        if re.search(useless, line):
+            return True
+
+def has_primary_key(line):
+    return bool(re.search(r'PRIMARY KEY', line))
+
+searching_for_end = False
+for line in fileinput.input():
+    if this_line_is_useless(line):
+        continue
+
+    # this line was necessary because ''); was getting
+    # converted (inappropriately) to \');
+    if re.match(r".*, ''\);", line):
+        line = re.sub(r"''\);", r'``);', line)
+
+    if re.match(r'^CREATE TABLE.*', line):
+        searching_for_end = True
+
+    m = re.search('CREATE TABLE "?([a-zA-Z_]*)"?(.*)', line)
+    if m:
+        name, sub = m.groups()
+        line = "DROP TABLE IF EXISTS %(name)s;\nCREATE TABLE IF NOT EXISTS `%(name)s`%(sub)s\n"
+        line = line % dict(name=name, sub=sub)
+    else:
+        m = re.search('INSERT INTO "([a-zA-Z_]*)"(.*)', line)
+        if m:
+            line = 'INSERT INTO %s%s\n' % m.groups()
+            line = line.replace('"', r'\"')
+            line = line.replace('"', "'")
+    line = re.sub(r"([^'])'t'(.)", "\1THIS_IS_TRUE\2", line)
+    line = line.replace('THIS_IS_TRUE', '1')
+    line = re.sub(r"([^'])'f'(.)", "\1THIS_IS_FALSE\2", line)
+    line = line.replace('THIS_IS_FALSE', '0')
+
+    # Add auto_increment if it's not there since sqlite auto_increments ALL
+    # primary keys
+    if searching_for_end:
+        if re.search(r"integer(?:\s+\w+)*\s*PRIMARY KEY(?:\s+\w+)*\s*,", line):
+            line = line.replace("PRIMARY KEY", "PRIMARY KEY AUTO_INCREMENT")
+        # replace " and ' with ` because mysql doesn't like quotes in CREATE commands
+        if line.find('DEFAULT') == -1:
+            line = line.replace(r'"', r'`').replace(r"'", r'`')
+        else:
+            parts = line.split('DEFAULT')
+            parts[0] = parts[0].replace(r'"', r'`').replace(r"'", r'`')
+            line = 'DEFAULT'.join(parts)
+
+    # And now we convert it back (see above)
+    if re.match(r".*, ``\);", line):
+        line = re.sub(r'``\);', r"'');", line)
+
+    if searching_for_end and re.match(r'.*\);', line):
+        searching_for_end = False
+
+    if re.match(r"CREATE INDEX", line):
+        line = re.sub('"', '`', line)
+
+    print line,
+#!/usr/bin/env python
+
+import re
+import fileinput
+
+def this_line_is_useless(line):
+    useless_es = [
+        'BEGIN TRANSACTION',
+        'COMMIT',
+        'sqlite_sequence',
+        'CREATE UNIQUE INDEX',
+        'PRAGMA foreign_keys=OFF',
+    ]
+    for useless in useless_es:
+        if re.search(useless, line):
+            return True
+
+def has_primary_key(line):
+    return bool(re.search(r'PRIMARY KEY', line))
+
+searching_for_end = False
+for line in fileinput.input():
+    if this_line_is_useless(line):
+        continue
+
+    # this line was necessary because ''); was getting
+    # converted (inappropriately) to \');
+    if re.match(r".*, ''\);", line):
+        line = re.sub(r"''\);", r'``);', line)
+
+    if re.match(r'^CREATE TABLE.*', line):
+        searching_for_end = True
+
+    m = re.search('CREATE TABLE "?([a-zA-Z_]*)"?(.*)', line)
+    if m:
+        name, sub = m.groups()
+        line = "DROP TABLE IF EXISTS %(name)s;\nCREATE TABLE IF NOT EXISTS `%(name)s`%(sub)s\n"
+        line = line % dict(name=name, sub=sub)
+    else:
+        m = re.search('INSERT INTO "([a-zA-Z_]*)"(.*)', line)
+        if m:
+            line = 'INSERT INTO %s%s\n' % m.groups()
+            line = line.replace('"', r'\"')
+            line = line.replace('"', "'")
+    line = re.sub(r"([^'])'t'(.)", "\1THIS_IS_TRUE\2", line)
+    line = line.replace('THIS_IS_TRUE', '1')
+    line = re.sub(r"([^'])'f'(.)", "\1THIS_IS_FALSE\2", line)
+    line = line.replace('THIS_IS_FALSE', '0')
+
+    # Add auto_increment if it's not there since sqlite auto_increments ALL
+    # primary keys
+    if searching_for_end:
+        if re.search(r"integer(?:\s+\w+)*\s*PRIMARY KEY(?:\s+\w+)*\s*,", line):
+            line = line.replace("PRIMARY KEY", "PRIMARY KEY AUTO_INCREMENT")
+        # replace " and ' with ` because mysql doesn't like quotes in CREATE commands
+        if line.find('DEFAULT') == -1:
+            line = line.replace(r'"', r'`').replace(r"'", r'`')
+        else:
+            parts = line.split('DEFAULT')
+            parts[0] = parts[0].replace(r'"', r'`').replace(r"'", r'`')
+            line = 'DEFAULT'.join(parts)
+
+    # And now we convert it back (see above)
+    if re.match(r".*, ``\);", line):
+        line = re.sub(r'``\);', r"'');", line)
+
+    if searching_for_end and re.match(r'.*\);', line):
+        searching_for_end = False
+
+    if re.match(r"CREATE INDEX", line):
+        line = re.sub('"', '`', line)
+
+    print line,

export_dictionary.php

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+<?php
+/*
+CAUTION!
+This file is to be run once, only when you've got
+a complete map as it overwrites blocks*.inc files!
+It's purpose is to make initial files for you to modify.
+
+Make sure to back up those after you've done some changes to them!
+*/
+include('mapreader.php'); // include map-parsing functions
+
+// BEGIN CONFIG HERE
+$mysqlConn=array(); // mysql config data here
+$mysqlConn['host']="dbhost here";
+$mysqlConn['user']="dbuser here";
+$mysqlConn["pass"]="dbpass here";
+$mysqlConn['base']="dbname here";
+$mysqlConn['table']="blocks"; // table named the same as Minetest's one
+
+$divider=100; // How many chunks to fetch at a time? Tinker with this to improve performance.
+// END CONFIG HERE
+
+$dictionary=array(); // we will store blocks' names here
+
+$file1=dirname(__FILE__).'/blocks.inc';
+$file2=dirname(__FILE__).'/blocks_textures.inc';
+prepareFile($file1); // prepare those two suckers!
+prepareFile($file2);
+
+// Open the database connection
+// Note: Can be sqlite3 functions here, but I'll stick with mysql. For reasons.
+$conn=mysql_connect($mysqlConn['host'],$mysqlConn['user'],$mysqlConn['pass']);
+mysql_select_db($mysqlConn['base']);
+
+// How many chunks are there in the set?
+$sql="select count(pos) as count_pos from ".$mysqlConn['table'];
+$result=mysql_fetch_assoc(mysql_query($sql));
+$count=$result["count_pos"];
+
+$countDiv=(int)($count/$divider);
+
+// Main loop
+for($i=0;$i<=$countDiv;$i++)
+{
+	// Indices for the loop to use
+	$start=$i*100;
+	$end=$start+100;
+	// Eyecandy line!
+	print("Reading chunks ".$start." to ".$end." of ".$count." total\n".count($dictionary)." entries so far...\n");
+	// Neat way of doing things. Read $divider number of chunks.
+	$sql="select pos,data from ".$mysqlConn['table']." order by pos asc limit ".$divider." offset ".$start;
+	$result=mysql_query($sql);
+	while($row=mysql_fetch_assoc($result))
+	{
+		$decodedchunk=new Mapreader($row["data"]); // Pass the data to the parser
+		$decodedchunk->exportScenery(); // Needed for the parser to run
+		$mappings=$decodedchunk->exportMappings(); // Export mappings - nodes' names
+		foreach($mappings as $row)
+		{
+			// Filter out some of them - they won't appear on the image either.
+			if($row!="ignore")
+			if($row!="air")
+			{
+				addEntry($row); // Add to the dictionary
+			}
+		}
+		unset($decodedchunk); // Free some memory
+	}
+}
+
+// Now we just write the files
+$fhandler1=fopen($file1,"wb");
+$fhandler2=fopen($file2,"wb");
+foreach($dictionary as $row)
+{
+	// Povray-compatible syntax. Defaluts to a box with empty texture.
+	fwrite($fhandler1,"#declare ".$row." = box { <0,0,0> <1,1,1> }\n");
+	fwrite($fhandler2,"#declare texture_".$row." = \ntexture {\n\n}\n");
+}
+fclose($fhandler1);
+fclose($fhandler2);
+
+// Close the database
+mysql_close($conn);
+
+function addEntry($entry)
+{
+	global $dictionary;
+	$data=str_replace(":","_",$entry); // Remove colon, as PovRAY could have problems with it
+	$dictionary[$data]=$data; // Simplest possible way of writing the data without checking if it exists already
+}
+
+function prepareFile($file)
+{
+	unlink($file); // Here we jsut delete files and make new ones.
+	$fhandler=fopen($file,"wb");
+	fclose($fhandler);
+}
+
+?>

mapreader.php

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+<?php
+class Mapreader
+{
+	private $data; // dane do obrobienia
+	
+	private $index=0; // indeks do walkera - ktora pare czytamy
+
+	public $mapVersion; // wersja mapy
+	private $bitmask=array(1=>0,2=>0,4=>0,8=>0); // flagi - is_underground, day_night_differs, lighting_expired, generated
+	private $contentWidth; // szerokosc danych param0 wezla
+	private $paramsWidth; // szerokosc danych wezlow
+	private $databinary; // dane do obrobienia przekodowane na binarke
+	private $gzipoffsets=array(); // offsety spakowanych blokow
+	private $map=array();
+	private $mappings=array();
+
+	
+	function __construct($input)
+	{
+		// konstruktor - bierze na siebie jedna linie (jeden chunk)
+		$this->data=$input;
+		$this->recodeInput();
+		unset($input);
+		$this->versionSet();
+		$this->bitflagsSet();
+		$this->contentwidthSet();
+		$this->paramswidthSet();
+		$this->gzipoffsets=$this->findGzipOffsets();
+		$this->splitCompressedBlocks();
+		//$this->exportScenery(); // do wywolania z zewnatrz
+		//print_r($this->databinary);
+
+/*
+		print("\nwersja mapy: ".$this->mapVersion."\n");
+		print("\nflagi: 1:".$this->bitmask[1]." 2:".$this->bitmask[2]." 4:".$this->bitmask[4]." 8:".$this->bitmask[8]."\n");
+		print("\nwielkosc param0: ".$this->contentWidth."\n");
+		print("\nwielkosc parametrow: ".$this->paramsWidth."\n");
+*/
+	}
+	
+	function __destruct()
+	{
+		unset($this->mapVersion);
+		unset($this->index);
+		unset($this->data);
+	}
+	
+	private function readlen($input)
+	{
+		// podaj dlugosc ciagu w bajtach - 2 znaki hex
+		return(strlen($input));
+	}
+	
+	private function versionSet()
+	{
+		// ustawia zmienna wersji mapy
+		$this->mapVersion=$this->readByte(0); // 0 to pozycja wersji
+	}
+	
+	private function bitflagsSet()
+	{
+		$bf=$this->readByte(1); // 1 to pozycja flag
+		$this->bitmask[1]=$bf&1;
+		$this->bitmask[2]=($bf&2)>>1;
+		$this->bitmask[4]=($bf&4)>>2;
+		$this->bitmask[8]=($bf&8)>>3;
+		unset($bf);
+	}
+
+	private function contentwidthSet()
+	{
+		// ustawia zmienna szerokosci param0
+		$this->contentWidth=$this->readByte(2); // 0 to pozycja wersji
+	}
+
+	private function paramswidthSet()
+	{
+		// ustawia zmienna szerokosci parametrow
+		$this->paramsWidth=$this->readByte(3); // 0 to pozycja wersji
+	}
+	
+	private function findGzipOffsets()
+	{
+		$offset=array();
+		$j=$this->readlen($this->data)-2;
+		for($i=0;$i<$j;$i++)
+		{
+			if($this->readByte($i)==120) // 0x78
+			{
+				if($this->readByte($i+1)==156) // 0x9c
+				{
+					$offset[1]=$i;
+					break;
+				}
+			}
+		}
+		$i++;
+		for($k=$i;$k<$j;$k++)
+		{
+			if($this->readByte($k)==120)
+			{
+				if($this->readByte($k+1)==156)
+				{
+					$offset[2]=$k;
+					break;
+				}
+			}
+		}
+		return($offset);
+	}
+	
+	private function recodeInput()
+	{
+		$temp='';
+		$j=$this->readlen($this->data);
+		for($i=4;$i<$j;$i++)
+		{
+			$temp.=chr($this->readByte($i));
+		}
+		$this->databinary=$temp;
+	}
+	
+	private function splitCompressedBlocks()
+	{
+		$temp='';
+		$j=$this->readlen($this->data);
+		$g1='/tmp/map';
+		$tempfile=fopen($g1, "wb");
+		$k=$this->gzipoffsets[2];
+		for($i=4;$i<$k;$i++)
+		{
+			fwrite($tempfile,chr($this->readByte($i)));
+			//pack('n',$this->readByte($i)));
+		}
+		fclose($tempfile);
+		$g2='/tmp/dict';
+		$tempfile=fopen($g2, "wb");
+		$k=$this->gzipoffsets[2];
+		for($i=$k;$i<$j;$i++)
+		{
+			fwrite($tempfile,chr($this->readByte($i)));
+			//pack('n',$this->readByte($i)));
+		}
+		fclose($tempfile);
+		
+		system(dirname(__FILE__).'/unzlib.py');
+		
+		// wczytanie mapy
+		$this->loadMap($g1.'.uncompressed',$g2.'.uncompressed','/tmp/leftover.uncompressed');
+		
+		//var_dump(gzinflate(readfile($g))); 
+		
+		/*$gz = gzopen($g, 'r');
+		while (!gzeof($gz)) {
+			echo gzgetc($gz).'.';
+		}
+		gzclose($gz);/**/
+		//unlink($g);
+	}
+	
+	private function loadMap($g1,$g2,$g3)
+	{
+		$mapfile=fopen($g1, "rb");
+		// czytamy: 4096*u16, 4096*u8, 4096*u8
+		// dane są msb-first
+		for($i=0;$i<4096;$i++)
+		{
+			$this->map[$i]['param0']=ord(fread($mapfile,1))*256+ord(fread($mapfile,1));
+		}
+		for($i=0;$i<4096;$i++)
+		{
+			$this->map[$i]['param1']=ord(fread($mapfile,1));
+		}
+		for($i=0;$i<4096;$i++)
+		{
+			$this->map[$i]['param2']=ord(fread($mapfile,1));
+		}
+		fclose($mapfile);
+		// wczytane, porzadkujemy
+
+		$leftover=fopen($g3, "rb");
+		fread($leftover,1); // wczytaj static_object_version (nie jest potrzebne)
+		$socount=(ord(fread($leftover,1))*256)+ord(fread($leftover,1)); // ile jest static objects
+		//print("\n\nilosc static objects: ".$socount."\n\n"); //
+		while($socount!=0)
+		{
+			fread($leftover,13); // czytamy rekordy zeby sie przesunac w pliku
+			$datasize=(ord(fread($leftover,1))*256)+ord(fread($leftover,1)); // czytamy datasize
+			if($datasize!=0)
+				fread($leftover,$datasize); // czytamy tyle bajtow ile bylo w datasize
+			$socount--;
+		}
+		fread($leftover,4); // czytamy timestamp (i olewamy go)
+		$ver=ord(fread($leftover,1));
+		//print('wersja name-id-mapping: '.$ver."\n\n"); // czytamy name-id-mapping-version (z zalozenia zero)
+		$numofmappings=(ord(fread($leftover,1))*256)+ord(fread($leftover,1)); // czytamy ile jest mapowan
+		//print('znalazlem '.$numofmappings." mapowan\n\n");
+		while($numofmappings!=0)
+		{
+			$id=(ord(fread($leftover,1))*256)+ord(fread($leftover,1)); // wczytujemy id mapowania
+			$namelen=(ord(fread($leftover,1))*256)+ord(fread($leftover,1)); // wczytujemy dlugosc nazwy
+			$this->mappings[$id]=fread($leftover,$namelen);
+			$numofmappings--;
+		}
+		fclose($leftover);
+		// zostalo: dict.uncompressed - napisy itp
+		
+		$this->matchMappings();
+		
+		
+		//debug
+		//print_r($this->mappings);
+		//print_r($this->map);
+	}
+	
+	private function matchMappings()
+	{
+		for($i=0;$i<4096;$i++)
+		{
+			$index=$this->map[$i]["param0"];
+			$id=$this->mappings[$index];
+			$this->map[$i]["param0"]=$id;
+		}
+		$x=0;
+		$y=0;
+		$z=0;
+		for($x=0;$x<16;$x++)
+		{
+			for($y=0;$y<16;$y++)
+			{
+				for($z=0;$z<16;$z++)
+				{
+					$i=$x+($y*16)+($z*16*16);
+					$this->map[$x][$y][$z]=$this->map[$i];
+					//unset($this->map[$i]);
+				}
+			}
+		}
+	}
+	
+	function exportScenery()
+	{
+		//print_r($this->map);
+		for($i=16;$i<4096;$i++)
+		{
+			unset($this->map[$i]);
+		}
+		$this->map["bits"][1]=$this->bitmask[1];
+		$this->map["bits"][2]=$this->bitmask[2];
+		$this->map["bits"][4]=$this->bitmask[4];
+		$this->map["bits"][8]=$this->bitmask[8];
+		return($this->map);
+	}
+	
+	function exportMappings()
+	{
+		return($this->mappings);
+	}
+
+	private function readByte($i)
+	{
+		// zwroc bajt z pozycji danej przez index
+		$a=$i;
+		return(ord($this->data[$a]));
+	}
+	
+}
+?>

povrayfunctions.php

@@ -0,0 +1,115 @@
+<?php
+function makeChunkInPovray($scenerydata,$filename,$chunkx,$chunky,$chunkz)
+{
+	$deltax=16*$chunkx;
+	$deltay=16*$chunky;
+	$deltaz=16*$chunkz;
+	//$tresc='';
+	if(true)//$scenerydata["bits"][8]!=0)
+	{
+		for($z=0;$z<16;$z++)
+		{
+			for($y=0;$y<16;$y++)
+			{
+				for($x=0;$x<16;$x++)
+				{
+					if($scenerydata[$x][$y][$z]["param0"]!='air')
+					if($scenerydata[$x][$y][$z]["param0"]!='ignore')
+					{
+						$tresc="object { mycube translate <";
+						file_put_contents($filename,$tresc,FILE_APPEND|LOCK_EX);
+						$tresc=(string)($x+$deltax);
+						file_put_contents($filename,$tresc,FILE_APPEND|LOCK_EX);
+						$tresc=",";
+						file_put_contents($filename,$tresc,FILE_APPEND|LOCK_EX);
+						$tresc=(string)($z+$deltaz);
+						file_put_contents($filename,$tresc,FILE_APPEND|LOCK_EX);
+						$tresc=",";
+						file_put_contents($filename,$tresc,FILE_APPEND|LOCK_EX);
+						$tresc=(string)($y+$deltay);
+						file_put_contents($filename,$tresc,FILE_APPEND|LOCK_EX);
+						$tresc="> texture {";
+						file_put_contents($filename,$tresc,FILE_APPEND|LOCK_EX);
+						if($scenerydata[$x][$y][$z]["param0"]=="default:stone")
+						{
+							$tresc="T_Stone24";
+						}
+						elseif($scenerydata[$x][$y][$z]["param0"]=="default:sand")
+						{
+							$tresc="default_sand";
+						}
+						elseif($scenerydata[$x][$y][$z]["param0"]=="wool:blue")
+						{
+							$tresc="wool_blue";
+						}
+						elseif($scenerydata[$x][$y][$z]["param0"]=="wool:green")
+						{
+							$tresc="wool_green";
+						}
+						elseif($scenerydata[$x][$y][$z]["param0"]=="wool:yellow")
+						{
+							$tresc="wool_yellow";
+						}
+						elseif($scenerydata[$x][$y][$z]["param0"]=="wool:red")
+						{
+							$tresc="wool_red";
+						}
+						elseif($scenerydata[$x][$y][$z]["param0"]=="wool:cyan")
+						{
+							$tresc="wool_cyan";
+						}
+						elseif($scenerydata[$x][$y][$z]["param0"]=="wool:pink")
+						{
+							$tresc="wool_pink";
+						}
+						elseif($scenerydata[$x][$y][$z]["param0"]=="wool:brown")
+						{
+							$tresc="wool_brown";
+						}
+						elseif($scenerydata[$x][$y][$z]["param0"]=="wool:orange")
+						{
+							$tresc="wool_orange";
+						}
+						elseif($scenerydata[$x][$y][$z]["param0"]=="wool:magenta")
+						{
+							$tresc="wool_magenta";
+						}
+						elseif($scenerydata[$x][$y][$z]["param0"]=="technic:concrete")
+						{
+							$tresc="technic_concrete";
+						}
+						elseif($scenerydata[$x][$y][$z]["param0"]=="technic:stainless_steel_block")
+						{
+							$tresc="T_Chrome_3C normal{granite scale<100, 0.1, 0.1>}";
+						}
+						elseif($scenerydata[$x][$y][$z]["param0"]=="default:water")
+						{
+							$tresc="default_water";
+						}
+						elseif($scenerydata[$x][$y][$z]["param0"]=="default:water_source")
+						{
+							$tresc="default_water";
+						}
+						elseif($scenerydata[$x][$y][$z]["param0"]=="default:dirt_with_grass")
+						{
+							$tresc="default_dirt_with_grass";
+						}
+						elseif($scenerydata[$x][$y][$z]["param0"]=="default:dirt")
+						{
+							$tresc="default_dirt";
+						}
+						else
+						{
+							$tresc="pigment{ color rgbf<1,1,1,0.5>}";
+						}
+						file_put_contents($filename,$tresc,FILE_APPEND|LOCK_EX);
+						$tresc="} }\n\n";
+						file_put_contents($filename,$tresc,FILE_APPEND|LOCK_EX);
+					}
+				}
+			}
+		}
+	}
+}
+
+?>

render_anim.sh

@@ -0,0 +1 @@
+screen -m -S povray povray scenery.pov +Q9 +W1920 +H1080

render_preview.sh

@@ -0,0 +1 @@
+screen -m -S povray povray scenery.pov +Q9 +W1920 +H1080 +KI0.0 +KF1.0 +KFI0 +KFF1799 +KC

unpack_coords.py

@@ -0,0 +1,22 @@
+#!/usr/bin/env python2
+
+import sys
+
+def getIntegerAsBlock(i):
+	x = unsignedToSigned(i % 4096, 2048)
+	i = int((i - x) / 4096)
+	y = unsignedToSigned(i % 4096, 2048)
+	i = int((i - y) / 4096)
+	z = unsignedToSigned(i % 4096, 2048)
+	print str(x) + ' ' + str(y) + ' ' + str(z)
+#	return x,y,z
+
+def unsignedToSigned(i, max_positive):
+	if i < max_positive:
+		return i
+	else:
+		return i - 2*max_positive
+
+a = int(sys.argv[1])
+
+getIntegerAsBlock(a)

unzlib.py

@@ -0,0 +1,23 @@
+#!/usr/bin/env python2
+
+import zlib
+import sys
+
+str_object1 = open('/tmp/map', 'rb').read()
+str_object2 = zlib.decompress(str_object1)
+f = open('/tmp/map.uncompressed', 'wb')
+f.write(str_object2)
+f.close()
+
+str_object1 = open('/tmp/dict', 'rb').read()
+str_object2 = zlib.decompress(str_object1)
+f = open('/tmp/dict.uncompressed', 'wb')
+f.write(str_object2)
+f.close()
+
+decom = zlib.decompressobj()
+d = decom.decompress(str_object1)
+str_object3 = decom.unused_data
+f = open('/tmp/leftover.uncompressed', 'wb')
+f.write(str_object3)
+f.close()