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Map importing, entity loading and more

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Shoghi Cervantes Pueyo
2012-12-07 14:46:40 +01:00
parent 92469a426f
commit 02b2e980eb
12 changed files with 396 additions and 19 deletions
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102
classes/NBT.class.php Normal file
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<?php
/**
* Class for reading in NBT-format files.
*
* @author Justin Martin <frozenfire@thefrozenfire.com>
* @version 1.0
* MODIFIED BY @shoghicp
*
* Dependencies:
* PHP 4.3+ (5.3+ recommended)
*/
class NBT {
public $root = array();
const TAG_END = 0;
const TAG_BYTE = 1;
const TAG_SHORT = 2;
const TAG_INT = 3;
const TAG_LONG = 4;
const TAG_FLOAT = 5;
const TAG_DOUBLE = 6;
const TAG_BYTE_ARRAY = 7;
const TAG_STRING = 8;
const TAG_LIST = 9;
const TAG_COMPOUND = 10;
public function loadFile($filename) {
if(is_file($filename)) {
$fp = fopen($filename, "rb");
}else{
trigger_error("First parameter must be a filename", E_USER_WARNING);
return false;
}
switch(basename($filename, ".dat")){
case "level":
$version = Utils::readInt(strrev(fread($fp, 4)));
$lenght = Utils::readInt(strrev(fread($fp, 4)));
break;
case "entities":
fread($fp, 12);
break;
}
$this->traverseTag($fp, $this->root);
return end($this->root);
}
public function traverseTag($fp, &$tree) {
if(feof($fp)) {
return false;
}
$tagType = $this->readType($fp, self::TAG_BYTE); // Read type byte.
if($tagType == self::TAG_END) {
return false;
} else {
$tagName = $this->readType($fp, self::TAG_STRING);
$tagData = $this->readType($fp, $tagType);
$tree[] = array("type"=>$tagType, "name"=>$tagName, "value"=>$tagData);
return true;
}
}
public function readType($fp, $tagType) {
switch($tagType) {
case self::TAG_BYTE: // Signed byte (8 bit)
return Utils::readByte(fread($fp, 1));
case self::TAG_SHORT: // Signed short (16 bit, big endian)
return Utils::readShort(strrev(fread($fp, 2)));
case self::TAG_INT: // Signed integer (32 bit, big endian)
return Utils::readInt(strrev(fread($fp, 4)));
case self::TAG_LONG: // Signed long (64 bit, big endian)
return Utils::readLong(strrev(fread($fp, 8)));
case self::TAG_FLOAT: // Floating point value (32 bit, big endian, IEEE 754-2008)
return Utils::readFloat(strrev(fread($fp, 4)));
case self::TAG_DOUBLE: // Double value (64 bit, big endian, IEEE 754-2008)
return Utils::readDouble(strrev(fread($fp, 8)));
case self::TAG_BYTE_ARRAY: // Byte array
$arrayLength = $this->readType($fp, self::TAG_INT);
$array = array();
for($i = 0; $i < $arrayLength; $i++) $array[] = $this->readType($fp, self::TAG_BYTE);
return $array;
case self::TAG_STRING: // String
if(!$stringLength = $this->readType($fp, self::TAG_SHORT)) return "";
$string = fread($fp, $stringLength); // Read in number of bytes specified by string length, and decode from utf8.
return $string;
case self::TAG_LIST: // List
$tagID = $this->readType($fp, self::TAG_BYTE);
$listLength = $this->readType($fp, self::TAG_INT);
$list = array("type"=>$tagID, "value"=>array());
for($i = 0; $i < $listLength; $i++) {
if(feof($fp)) break;
$list["value"][] = $this->readType($fp, $tagID);
}
return $list;
case self::TAG_COMPOUND: // Compound
$tree = array();
while($this->traverseTag($fp, $tree));
return $tree;
}
}
}
?>