From e3cae7364f1b98396f81b6bd29200929285453c8 Mon Sep 17 00:00:00 2001
From: "Dylan K. Taylor" <odigiman@gmail.com>
Date: Fri, 16 Mar 2018 12:58:46 +0000
Subject: [PATCH] Level: don't send empty block update batches

---
 src/pocketmine/level/Level.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/pocketmine/level/Level.php b/src/pocketmine/level/Level.php
index 8d7c21a0d..eeeee525b 100644
--- a/src/pocketmine/level/Level.php
+++ b/src/pocketmine/level/Level.php
@@ -792,7 +792,7 @@ class Level implements ChunkManager, Metadatable{
 						foreach($this->getChunkPlayers($chunkX, $chunkZ) as $p){
 							$p->onChunkChanged($chunk);
 						}
-					}else{
+					}elseif(!empty($blocks)){
 						$this->sendBlocks($this->getChunkPlayers($chunkX, $chunkZ), $blocks, UpdateBlockPacket::FLAG_ALL);
 					}
 				}