Added LecternPlaceBookSound

src/block/Lectern.php

@@ -33,6 +33,7 @@ use pocketmine\math\AxisAlignedBB;
 use pocketmine\math\Facing;
 use pocketmine\math\Vector3;
 use pocketmine\player\Player;
+use pocketmine\world\sound\LecternPlaceBookSound;
 
 class Lectern extends Transparent{
 	use FacesOppositePlacingPlayerTrait;
@@ -122,6 +123,7 @@ class Lectern extends Transparent{
 	public function onInteract(Item $item, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
 		if($this->book === null && $item instanceof WritableBookBase){
 			$this->position->getWorld()->setBlock($this->position, $this->setBook($item));
+			$this->position->getWorld()->addSound($this->position, new LecternPlaceBookSound());
 			$item->pop();
 		}
 		return true;

src/world/sound/LecternPlaceBookSound.php

@@ -0,0 +1,35 @@
+<?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\world\sound;
+
+use pocketmine\math\Vector3;
+use pocketmine\network\mcpe\protocol\LevelSoundEventPacket;
+use pocketmine\network\mcpe\protocol\types\LevelSoundEvent;
+
+final class LecternPlaceBookSound implements Sound{
+
+	public function encode(Vector3 $pos) : array{
+		return [LevelSoundEventPacket::nonActorSound(LevelSoundEvent::ITEM_BOOK_PUT, $pos, false)];
+	}
+}