diff --git a/src/API/PluginAPI.php b/src/API/PluginAPI.php
index aaadd5a2e..d30ad3473 100644
--- a/src/API/PluginAPI.php
+++ b/src/API/PluginAPI.php
@@ -130,6 +130,7 @@ class PluginAPI extends stdClass{
 		}
 		$path = DATA_PATH."plugins/".$p[1]["name"]."/";
 		$this->plugins[$p[1]["class"]][1]["path"] = $path;
+		@mkdir($path);
 		return $path;
 	}
 
@@ -138,9 +139,7 @@ class PluginAPI extends stdClass{
 		if($p === false){
 			return false;
 		}
-		$path = DATA_PATH."plugins/".$p[1]["name"]."/";
-		@mkdir($path);
-		$this->plugins[$p[1]["class"]][1]["path"] = $path;
+		$path = $this->configPath($plugin);
 		$cnf = new Config($path."config.yml", CONFIG_YAML, $default);
 		$cnf->save();
 		return $path;
diff --git a/src/pmf/Level.php b/src/pmf/Level.php
new file mode 100644
index 000000000..748f7ae4b
--- /dev/null
+++ b/src/pmf/Level.php
@@ -0,0 +1,256 @@
+<?php
+
+/*
+
+           -
+         /   \
+      /         \
+   /   PocketMine  \
+/          MP         \
+|\     @shoghicp     /|
+|.   \           /   .|
+| ..     \   /     .. |
+|    ..    |    ..    |
+|       .. | ..       |
+\          |          /
+   \       |       /
+      \    |    /
+         \ | /
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+
+*/
+
+/***REM_START***/
+require_once(FILE_PATH."/src/pmf/PMF.php");
+/***REM_END***/
+
+define("PMF_CURRENT_LEVEL_VERSION", 0x00);
+
+class PMFLevel extends PMF{
+	private $levelData = array();
+	private $locationTable = array();
+	public $isLoaded = true
+	private $log = 4;
+	private $payloadOffset = 0;
+	private $chunks = array();
+	private $chunkChange = array();
+	
+	public function __construct($file){
+		if($this->load($file) !== false){
+			if($this->parseLevel() === false){
+				$this->isLoaded = false;
+			}else{
+				$this->isLoaded = true;
+				$this->log = (int) ((string) log($this->levelData["width"], 2));
+			}
+		}else{
+			$this->isLoaded = false;
+		}
+	}
+	
+	protected function parseLevel(){
+		if($this->getType() !== 0x00){
+			return false;
+		}
+		$this->seek(5);
+		$this->levelData["name"] = $this->read(Utils::readShort($this->read(2), false));
+		$this->levelData["seed"] = Utils::readInt($this->read(4));
+		$this->levelData["time"] = Utils::readInt($this->read(4));
+		$this->levelData["spawnX"] = Utils::readFloat($this->read(4));
+		$this->levelData["spawnY"] = Utils::readFloat($this->read(4));
+		$this->levelData["spawnZ"] = Utils::readFloat($this->read(4));
+		$this->levelData["width"] = ord($this->read(1));
+		$this->levelData["height"] = ord($this->read(1));
+		if(($this->levelData["width"] !== 16 and $this->levelData["width"] !== 32) or $this->levelData["height"] !== 8){
+			return false;
+		}
+		$this->levelData["extra"] = gzinflate($this->read(Utils::readShort($this->read(2), false))); //Additional custom plugin data
+		if($this->levelData["extra"] === false){
+			return false;
+		}
+		$this->payloadOffset = ftell($this->fp);
+		return $this->readLocationTable();
+	}
+	
+	public function getIndex($X, $Z){
+		$X = (int) $X;
+		$Z = (int) $Z;
+		return $X << $this->log + $Z;
+	}
+	
+	public function getXZ($index, &$X = null, &$Z = null){
+		$X = $index >> $this->log;
+		$Z = $index & (($this->log << 1) - 1);
+		return array($X, $Z);
+	}
+	
+	private function readLocationTable(){
+		$this->locationTable = array();
+		$cnt = pow($this->levelData["width"], 2);
+		$this->seek($this->payloadOffset);
+		for($index = 0; $index < $cnt; ++$index){
+			$this->chunks[$index] = false;
+			$this->chunkChange[$index] = false;
+			$this->locationTable[$index] = array(
+				0 => Utils::readShort($this->read(2)), //16 bit flags
+			);
+		}
+		return true;
+	}
+	
+	private function getChunkPath($X, $Z){
+		return dirname($this->file)."/chunks/".$X.".".$Z.".pmc";
+	}
+	
+	public function loadChunk($X, $Z){
+		$X = (int) $X;
+		$Z = (int) $Z;
+		if($this->isChunkLoaded($X, $Z)){
+			return true;
+		}
+		$index = $this->getIndex($X, $Z);
+		$info = $this->locationTable[$index];
+		$this->seek($info[0]);
+
+		$chunk = @gzopen($this->getChunkPath($X, $Z), "rb");
+		if($chunk === false){
+			return false;
+		}
+		$this->chunks[$index] = array();
+		$this->chunkChange[$index] = array();
+		for($Y = 0; $Y < $this->levelData["height"]; ++$Y){
+			$t = 1 << $Y;
+			if(($info[0] & $t) === $t){
+				$this->chunks[$index][$Y] = gzread($chunk, 8192); // 4096 + 2048 + 2048, Block Data, Meta, Light
+			}else{
+				$this->chunks[$index][$Y] = false;
+			}
+		}		
+		@gzclose($chunk);
+		return true;
+	}
+	
+	public function isChunkLoaded($X, $Z){
+		$index = $this->getIndex($X, $Z);
+		if(!isset($this->chunks[$index]) or $this->chunks[$index] === false){
+			return false;
+		}
+		return true;
+	}
+	
+	protected function isMiniChunkEmpty($X, $Z, $Y){
+		$index = $this->getIndex($X, $Z);
+		if($this->chunks[$index][$Y] !== false){
+			
+		}
+		return true;
+	}
+	
+	public function getBlock($x, $y, $z){
+		$X = $x << 4;
+		$Z = $z << 4;
+		$Y = $y << 4;
+		if($X >= 32 or $Z >= 32){
+			return array(AIR, 0);
+		}
+		$index = $this->getIndex($X, $Z);
+		if($this->chunks[$index] === false){
+			if($this->loadChunk($X, $Z) === false){
+				return array(AIR, 0);
+			}
+		}elseif($this->chunks[$index][$Y] === false){
+			return array(AIR, 0);
+		}
+		$aX = $x - ($X << 4);
+		$aZ = $z - ($Z << 4);
+		$aY = $y - ($Y << 4);
+		$bindex = $aY + $aZ << 5 + $aX << 9;
+		$mindex = $aY >> 1 + 16 + $aZ << 5 + $aX << 9;
+		$b = ord($this->chunks[$index][$Y]{$bindex});
+		$m = ord($this->chunks[$index][$Y]{$mindex});
+		if(($y & 1) === 0){
+			$m = $m & 0x0F;
+		}else{
+			$m = $m >> 4;
+		}
+		return array($b, $m);		
+	}
+	
+	protected function fillMiniChunk($X, $Z, $Y){
+		if($this->isChunkLoaded($X, $Z) === false){
+			return false;
+		}
+		$this->chunks[$index][$Y] = str_repeat("\x00", 8192);
+		$this->locationTable[$index][0] |= 1 << $Y;
+		return true;
+	}
+	
+	public function setBlock($x, $y, $z, $block, $meta = 0){
+		$X = $x << 4;
+		$Z = $z << 4;
+		$Y = $y << 4;
+		$block &= 0xFF;
+		$meta &= 0x0F;
+		if($X >= 32 or $Z >= 32){
+			return false;
+		}
+		$index = $this->getIndex($X, $Z);
+		if($this->chunks[$index] === false){
+			if($this->loadChunk($X, $Z) === false){
+				return false;
+			}
+		}elseif($this->chunks[$index][$Y] === false){
+			$this->fillMiniChunk($X, $Z, $Y);
+		}
+		$aX = $x - ($X << 4);
+		$aZ = $z - ($Z << 4);
+		$aY = $y - ($Y << 4);
+		$bindex = $aY + $aZ << 5 + $aX << 9;
+		$mindex = $aY >> 1 + 16 + $aZ << 5 + $aX << 9;
+		$old_b = $this->chunks[$index][$Y]{$bindex};
+		$this->chunks[$index][$Y]{$bindex} = chr($block & 0xFF);
+		$old_m = ord($this->map[$X][$Z][1][$index]{$y >> 1});
+		if(($y & 1) === 0){
+			$m = ($old_m & 0xF0) | ($meta & 0x0F);
+		}else{
+			$m = (($meta << 4) & 0xF0) | ($old_m & 0x0F);
+		}
+		$this->chunks[$index][$Y]{$mindex} = chr($meta);
+		if($old_b !== $block or $old_m !== $meta){
+			if(!isset($this->chunkChange[$index][$Y])){
+				$this->chunkChange[$index][$Y] = 1;
+			}else{
+				++$this->chunkChange[$index][$Y];
+			}
+		}
+		return true;
+	}
+	
+	public function saveChunk($X, $Z){
+		$X = (int) $X;
+		$Z = (int) $Z;
+		if(!$this->isChunkLoaded($X, $Z)){
+			return false;
+		}
+		$index = $this->getIndex($X, $Z);
+		$chunk = @gzopen($this->getChunkPath($X, $Z), "wb9");
+		$bitmap = 0;
+		for($Y = 0; $Y < $this->levelData["height"]; ++$Y){
+			if($this->chunks[$index][$Y] !== false and !$this->isMiniChunkEmpty($X, $Z, $Y)){
+				gzwrite($chunk, $this->chunks[$index][$Y]);
+				$bitmap |= 1 << $Y;
+			}else{
+				$this->chunks[$index][$Y] = false;
+			}
+		}
+		$this->locationTable[$index][0] = $bitmap;
+		$this->seek($this->payloadOffset + $index << 2);
+		$this->write(Utils::writeShort($this->locationTable[$index][0]));
+	}
+
+}
\ No newline at end of file
diff --git a/src/pmf/PMF.php b/src/pmf/PMF.php
index 1740953bd..5fabb78b5 100644
--- a/src/pmf/PMF.php
+++ b/src/pmf/PMF.php
@@ -29,7 +29,7 @@ define("PMF_CURRENT_VERSION", 0x01);
 
 class PMF{
 	protected $fp;
-	private $file;
+	protected $file;
 	private $version;
 	private $type;
 	
@@ -55,8 +55,9 @@ class PMF{
 		$this->close();
 		$this->file = realpath($file);
 		if(($this->fp = @fopen($file, "c+b")) !== false){
-			$stat = fstat($this->fp);
-			if($stat["size"] >= 5){ //Header + 2 Bytes
+			fseek($this->fp, 0, SEEK_END);
+			if(ftell($this->fp) >= 5){ //Header + 2 Bytes
+				@flock($this->fp, LOCK_EX);
 				return true;
 			}
 			$this->close();
@@ -88,6 +89,7 @@ class PMF{
 	public function close(){
 		unset($this->version, $this->type, $this->file);
 		if(is_object($this->fp)){
+			@flock($this->fp, LOCK_UN);
 			fclose($this->fp);
 		}
 	}