From c7e803372c7b37c800280e885c01638ae4bdfc8b Mon Sep 17 00:00:00 2001
From: "Dylan K. Taylor" <odigiman@gmail.com>
Date: Mon, 26 Mar 2018 09:24:00 +0100
Subject: [PATCH] Inventory: added API method isSlotEmpty()

---
 src/pocketmine/inventory/BaseInventory.php | 4 ++++
 src/pocketmine/inventory/Inventory.php     | 9 +++++++++
 2 files changed, 13 insertions(+)

diff --git a/src/pocketmine/inventory/BaseInventory.php b/src/pocketmine/inventory/BaseInventory.php
index 17ec10dfb..cb1bb478d 100644
--- a/src/pocketmine/inventory/BaseInventory.php
+++ b/src/pocketmine/inventory/BaseInventory.php
@@ -237,6 +237,10 @@ abstract class BaseInventory implements Inventory{
 		return -1;
 	}
 
+	public function isSlotEmpty(int $index) : bool{
+		return $this->slots[$index] === null or $this->slots[$index]->isNull();
+	}
+
 	public function canAddItem(Item $item) : bool{
 		$item = clone $item;
 		$checkDamage = !$item->hasAnyDamageValue();
diff --git a/src/pocketmine/inventory/Inventory.php b/src/pocketmine/inventory/Inventory.php
index 7e23b1935..1f1fc266f 100644
--- a/src/pocketmine/inventory/Inventory.php
+++ b/src/pocketmine/inventory/Inventory.php
@@ -171,6 +171,15 @@ interface Inventory{
 	 */
 	public function firstEmpty() : int;
 
+	/**
+	 * Returns whether the given slot is empty.
+	 *
+	 * @param int $index
+	 *
+	 * @return bool
+	 */
+	public function isSlotEmpty(int $index) : bool;
+
 	/**
 	 * Will remove all the Items that has the same id and metadata (if not null)
 	 *