From a0cda3b45ae41021143d65d45529328bd12777ed Mon Sep 17 00:00:00 2001
From: "Dylan K. Taylor" <odigiman@gmail.com>
Date: Sun, 4 Dec 2016 17:46:56 +0000
Subject: [PATCH] Fixed extra data encoding

---
 .../level/format/generic/GenericChunk.php           | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/src/pocketmine/level/format/generic/GenericChunk.php b/src/pocketmine/level/format/generic/GenericChunk.php
index f58d195c5..bd903533b 100644
--- a/src/pocketmine/level/format/generic/GenericChunk.php
+++ b/src/pocketmine/level/format/generic/GenericChunk.php
@@ -619,9 +619,16 @@ class GenericChunk implements Chunk{
 			$result .= $this->subChunks[$y]->networkSerialize();
 		}
 		$result .= pack("v*", ...$this->heightMap)
-			. $this->biomeIds
-			. "\x00" //border block array count (TODO)
-			. "\x00\x00\x00\x00"; //extra data array (TODO)
+		        .  $this->biomeIds
+		        .  chr(0); //border block array count (TODO)
+
+		$extraData = new BinaryStream();
+		$extraData->putVarInt(count($this->extraData)); //WHY, Mojang, WHY
+		foreach($this->extraData as $key => $value){
+			$extraData->putVarInt($key);
+			$extraData->putLShort($value);
+		}
+		$result .= $extraData->getBuffer();
 
 		if(count($this->tiles) > 0){
 			$nbt = new NBT(NBT::LITTLE_ENDIAN);