From 04d0b6c0547daca6b97fa64d11f421a1ba2180a2 Mon Sep 17 00:00:00 2001
From: "Dylan K. Taylor" <odigiman@gmail.com>
Date: Mon, 20 May 2019 15:45:15 +0100
Subject: [PATCH] don't spam listeners with slot-change notifications when
 doing a content change

---
 src/pocketmine/inventory/BaseInventory.php | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/pocketmine/inventory/BaseInventory.php b/src/pocketmine/inventory/BaseInventory.php
index 9be938cbf..a58001cb1 100644
--- a/src/pocketmine/inventory/BaseInventory.php
+++ b/src/pocketmine/inventory/BaseInventory.php
@@ -108,6 +108,9 @@ abstract class BaseInventory implements Inventory{
 			$items = array_slice($items, 0, $this->getSize(), true);
 		}
 
+		$listeners = $this->listeners;
+		$this->listeners = [];
+
 		for($i = 0, $size = $this->getSize(); $i < $size; ++$i){
 			if(!isset($items[$i])){
 				if($this->slots[$i] !== null){
@@ -120,6 +123,8 @@ abstract class BaseInventory implements Inventory{
 			}
 		}
 
+		$this->addChangeListeners(...$listeners); //don't directly write, in case listeners were added while operation was in progress
+
 		foreach($this->listeners as $listener){
 			$listener->onContentChange($this);
 		}