Found some things in new packets

src/pocketmine/network/mcpe/protocol/LabTablePacket.php

@@ -30,12 +30,29 @@ use pocketmine\network\mcpe\NetworkSession;
 class LabTablePacket extends DataPacket{
 	public const NETWORK_ID = ProtocolInfo::LAB_TABLE_PACKET;
 
+	/** @var int */
+	public $uselessByte; //0 for client -> server, 1 for server -> client. Seems useless.
+
+	/** @var int */
+	public $x;
+	/** @var int */
+	public $y;
+	/** @var int */
+	public $z;
+
+	/** @var int */
+	public $reactionType;
+
 	protected function decodePayload(){
-		//TODO
+		$this->uselessByte = $this->getByte();
+		$this->getSignedBlockPosition($this->x, $this->y, $this->z);
+		$this->reactionType = $this->getByte();
 	}
 
 	protected function encodePayload(){
-		//TODO
+		$this->putByte($this->uselessByte);
+		$this->putSignedBlockPosition($this->x, $this->y, $this->z);
+		$this->putByte($this->reactionType);
 	}
 
 	public function handle(NetworkSession $session) : bool{

src/pocketmine/network/mcpe/protocol/RemoveObjectivePacket.php

@@ -30,12 +30,15 @@ use pocketmine\network\mcpe\NetworkSession;
 class RemoveObjectivePacket extends DataPacket{
 	public const NETWORK_ID = ProtocolInfo::REMOVE_OBJECTIVE_PACKET;
 
+	/** @var string */
+	public $objectiveName;
+
 	protected function decodePayload(){
-		//TODO
+		$this->objectiveName = $this->getString();
 	}
 
 	protected function encodePayload(){
-		//TODO
+		$this->putString($this->objectiveName);
 	}
 
 	public function handle(NetworkSession $session) : bool{

src/pocketmine/network/mcpe/protocol/SetDisplayObjectivePacket.php

@@ -30,12 +30,31 @@ use pocketmine\network\mcpe\NetworkSession;
 class SetDisplayObjectivePacket extends DataPacket{
 	public const NETWORK_ID = ProtocolInfo::SET_DISPLAY_OBJECTIVE_PACKET;
 
+	/** @var string */
+	public $displaySlot;
+	/** @var string */
+	public $objectiveName;
+	/** @var string */
+	public $displayName;
+	/** @var string */
+	public $criteriaName;
+	/** @var int */
+	public $sortOrder;
+
 	protected function decodePayload(){
-		//TODO
+		$this->displaySlot = $this->getString();
+		$this->objectiveName = $this->getString();
+		$this->displayName = $this->getString();
+		$this->criteriaName = $this->getString();
+		$this->sortOrder = $this->getVarInt();
 	}
 
 	protected function encodePayload(){
-		//TODO
+		$this->putString($this->displaySlot);
+		$this->putString($this->objectiveName);
+		$this->putString($this->displayName);
+		$this->putString($this->criteriaName);
+		$this->putVarInt($this->sortOrder);
 	}
 
 	public function handle(NetworkSession $session) : bool{

src/pocketmine/network/mcpe/protocol/SetScorePacket.php

@@ -26,16 +26,37 @@ namespace pocketmine\network\mcpe\protocol;
 #include <rules/DataPacket.h>
 
 use pocketmine\network\mcpe\NetworkSession;
+use pocketmine\network\mcpe\protocol\types\ScorePacketEntry;
 
 class SetScorePacket extends DataPacket{
 	public const NETWORK_ID = ProtocolInfo::SET_SCORE_PACKET;
 
+	public const TYPE_MODIFY_SCORE = 0;
+	public const TYPE_RESET_SCORE = 1;
+
+	/** @var int */
+	public $type;
+	/** @var ScorePacketEntry[] */
+	public $entries = [];
+
 	protected function decodePayload(){
-		//TODO
+		$this->type = $this->getByte();
+		for($i = 0, $i2 = $this->getUnsignedVarInt(); $i < $i2; ++$i){
+			$entry = new ScorePacketEntry();
+			$entry->uuid = $this->getUUID();
+			$entry->objectiveName = $this->getString();
+			$entry->score = $this->getLInt();
+		}
 	}
 
 	protected function encodePayload(){
-		//TODO
+		$this->putByte($this->type);
+		$this->putUnsignedVarInt(count($this->entries));
+		foreach($this->entries as $entry){
+			$this->putUUID($entry->uuid);
+			$this->putString($entry->objectiveName);
+			$this->putLInt($entry->score);
+		}
 	}
 
 	public function handle(NetworkSession $session) : bool{

src/pocketmine/network/mcpe/protocol/types/ScorePacketEntry.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\network\mcpe\protocol\types;
+
+use pocketmine\utils\UUID;
+
+class ScorePacketEntry{
+	/** @var UUID */
+	public $uuid;
+	/** @var string */
+	public $objectiveName;
+	/** @var int */
+	public $score;
+}