From 6ccb8f737305059038d695c82db1bfba3047d514 Mon Sep 17 00:00:00 2001
From: "Dylan K. Taylor" <dktapps@pmmp.io>
Date: Mon, 20 Mar 2023 16:57:38 +0000
Subject: [PATCH] git

---
 src/network/mcpe/ComplexInventoryMapEntry.php | 64 +++++++++++++++++++
 1 file changed, 64 insertions(+)
 create mode 100644 src/network/mcpe/ComplexInventoryMapEntry.php

diff --git a/src/network/mcpe/ComplexInventoryMapEntry.php b/src/network/mcpe/ComplexInventoryMapEntry.php
new file mode 100644
index 000000000..dfd3e999a
--- /dev/null
+++ b/src/network/mcpe/ComplexInventoryMapEntry.php
@@ -0,0 +1,64 @@
+<?php
+
+/*
+ *
+ *  ____            _        _   __  __ _                  __  __ ____
+ * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
+ * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
+ * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
+ * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
+ *
+ * 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.
+ *
+ * @author PocketMine Team
+ * @link http://www.pocketmine.net/
+ *
+ *
+ */
+
+declare(strict_types=1);
+
+namespace pocketmine\network\mcpe;
+
+use pocketmine\inventory\Inventory;
+
+final class ComplexInventoryMapEntry{
+
+	/**
+	 * @var int[]
+	 * @phpstan-var array<int, int>
+	 */
+	private array $reverseSlotMap = [];
+
+	/**
+	 * @param int[] $slotMap
+	 * @phpstan-param array<int, int> $slotMap
+	 */
+	public function __construct(
+		private Inventory $inventory,
+		private array $slotMap
+	){
+		foreach($slotMap as $slot => $index){
+			$this->reverseSlotMap[$index] = $slot;
+		}
+	}
+
+	public function getInventory() : Inventory{ return $this->inventory; }
+
+	/**
+	 * @return int[]
+	 * @phpstan-return array<int, int>
+	 */
+	public function getSlotMap() : array{ return $this->slotMap; }
+
+	public function mapNetToCore(int $slot) : ?int{
+		return $this->slotMap[$slot] ?? null;
+	}
+
+	public function mapCoreToNet(int $slot) : ?int{
+		return $this->reverseSlotMap[$slot] ?? null;
+	}
+}