mirror of
https://github.com/pmmp/PocketMine-MP.git
synced 2025-07-29 14:15:47 +00:00
76f1ee1827
This prevents plugins sending wrong packets at the compiler level (or would, if we had a compiler). It's more robust than a getter for client/server and throwing an exception since a static analysis tool can detect faults created by sending wrong packets from the server. This is also used to deny service to dodgy clients which send wrong packets to the server to attack it.
122 lines
3.3 KiB
PHP
122 lines
3.3 KiB
PHP
<?php
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/*
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*
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* ____ _ _ __ __ _ __ __ ____
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* | _ \ ___ ___| | _____| |_| \/ (_)_ __ ___ | \/ | _ \
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* | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
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* | __/ (_) | (__| < __/ |_| | | | | | | | __/_____| | | | __/
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* |_| \___/ \___|_|\_\___|\__|_| |_|_|_| |_|\___| |_| |_|_|
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* @author PocketMine Team
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* @link http://www.pocketmine.net/
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*
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*
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*/
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declare(strict_types=1);
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namespace pocketmine\network\mcpe\protocol;
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#include <rules/DataPacket.h>
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use pocketmine\network\mcpe\handler\SessionHandler;
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use pocketmine\utils\BinaryDataException;
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class MoveEntityDeltaPacket extends DataPacket implements ClientboundPacket{
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public const NETWORK_ID = ProtocolInfo::MOVE_ENTITY_DELTA_PACKET;
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public const FLAG_HAS_X = 0x01;
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public const FLAG_HAS_Y = 0x02;
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public const FLAG_HAS_Z = 0x04;
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public const FLAG_HAS_ROT_X = 0x08;
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public const FLAG_HAS_ROT_Y = 0x10;
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public const FLAG_HAS_ROT_Z = 0x20;
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/** @var int */
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public $entityRuntimeId;
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/** @var int */
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public $flags;
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/** @var int */
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public $xDiff = 0;
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/** @var int */
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public $yDiff = 0;
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/** @var int */
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public $zDiff = 0;
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/** @var float */
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public $xRot = 0.0;
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/** @var float */
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public $yRot = 0.0;
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/** @var float */
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public $zRot = 0.0;
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/**
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* @param int $flag
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*
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* @return int
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* @throws BinaryDataException
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*/
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private function maybeReadCoord(int $flag) : int{
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if($this->flags & $flag){
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return $this->getVarInt();
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}
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return 0;
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}
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/**
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* @param int $flag
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*
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* @return float
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* @throws BinaryDataException
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*/
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private function maybeReadRotation(int $flag) : float{
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if($this->flags & $flag){
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return $this->getByteRotation();
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}
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return 0.0;
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}
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protected function decodePayload() : void{
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$this->entityRuntimeId = $this->getEntityRuntimeId();
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$this->flags = $this->getByte();
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$this->xDiff = $this->maybeReadCoord(self::FLAG_HAS_X);
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$this->yDiff = $this->maybeReadCoord(self::FLAG_HAS_Y);
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$this->zDiff = $this->maybeReadCoord(self::FLAG_HAS_Z);
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$this->xRot = $this->maybeReadRotation(self::FLAG_HAS_ROT_X);
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$this->yRot = $this->maybeReadRotation(self::FLAG_HAS_ROT_Y);
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$this->zRot = $this->maybeReadRotation(self::FLAG_HAS_ROT_Z);
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}
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private function maybeWriteCoord(int $flag, int $val) : void{
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if($this->flags & $flag){
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$this->putVarInt($val);
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}
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}
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private function maybeWriteRotation(int $flag, float $val) : void{
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if($this->flags & $flag){
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$this->putByteRotation($val);
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}
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}
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protected function encodePayload() : void{
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$this->putEntityRuntimeId($this->entityRuntimeId);
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$this->putByte($this->flags);
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$this->maybeWriteCoord(self::FLAG_HAS_X, $this->xDiff);
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$this->maybeWriteCoord(self::FLAG_HAS_Y, $this->yDiff);
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$this->maybeWriteCoord(self::FLAG_HAS_Z, $this->zDiff);
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$this->maybeWriteRotation(self::FLAG_HAS_ROT_X, $this->xRot);
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$this->maybeWriteRotation(self::FLAG_HAS_ROT_Y, $this->yRot);
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$this->maybeWriteRotation(self::FLAG_HAS_ROT_Z, $this->zRot);
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}
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public function handle(SessionHandler $handler) : bool{
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return $handler->handleMoveEntityDelta($this);
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}
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}
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