CorrectPlayerMovePredictionPacket.php

<?php
 
/*
 * This file is part of BedrockProtocol.
 * Copyright (C) 2014-2022 PocketMine Team <https://github.com/pmmp/BedrockProtocol>
 *
 * BedrockProtocol 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.
 */
 
declare(strict_types=1);
 
namespace pocketmine\network\mcpe\protocol;
 
use pocketmine\math\Vector2;
use pocketmine\math\Vector3;
use pocketmine\network\mcpe\protocol\serializer\PacketSerializer;
 
class CorrectPlayerMovePredictionPacket extends DataPacket implements ClientboundPacket{
    public const NETWORK_ID = ProtocolInfo::CORRECT_PLAYER_MOVE_PREDICTION_PACKET;
 
    public const PREDICTION_TYPE_PLAYER = 0;
    public const PREDICTION_TYPE_VEHICLE = 1;
 
    private Vector3 $position;
    private Vector3 $delta;
    private bool $onGround;
    private int $tick;
    private int $predictionType;
    private ?Vector2 $vehicleRotation;
    private ?float $vehicleAngularVelocity;
 
    private static function internalCreate(
        Vector3 $position,
        Vector3 $delta,
        bool $onGround,
        int $tick,
        int $predictionType,
        ?Vector2 $vehicleRotation,
        ?float $vehicleAngularVelocity,
    ) : self{
        $result = new self;
        $result->position = $position;
        $result->delta = $delta;
        $result->onGround = $onGround;
        $result->tick = $tick;
        $result->predictionType = $predictionType;
        $result->vehicleRotation = $vehicleRotation;
        $result->vehicleAngularVelocity = $vehicleAngularVelocity;
        return $result;
    }
 
    public static function create(Vector3 $position, Vector3 $delta, bool $onGround, int $tick, int $predictionType, ?Vector2 $vehicleRotation, ?float $vehicleAngularVelocity) : self{
        if($predictionType === self::PREDICTION_TYPE_VEHICLE && $vehicleRotation === null){
            throw new \LogicException("CorrectPlayerMovePredictionPackets with type VEHICLE require a vehicleRotation to be provided");
        }
 
        return self::internalCreate($position, $delta, $onGround, $tick, $predictionType, $vehicleRotation, $vehicleAngularVelocity);
    }
 
    public function getPosition() : Vector3{ return $this->position; }
 
    public function getDelta() : Vector3{ return $this->delta; }
 
    public function isOnGround() : bool{ return $this->onGround; }
 
    public function getTick() : int{ return $this->tick; }
 
    public function getPredictionType() : int{ return $this->predictionType; }
 
    public function getVehicleRotation() : ?Vector2{ return $this->vehicleRotation; }
 
    public function getVehicleAngularVelocity() : ?float{ return $this->vehicleAngularVelocity; }
 
    protected function decodePayload(PacketSerializer $in) : void{
        $this->predictionType = $in->getByte();
        $this->position = $in->getVector3();
        $this->delta = $in->getVector3();
        if($this->predictionType === self::PREDICTION_TYPE_VEHICLE){
            $this->vehicleRotation = new Vector2($in->getFloat(), $in->getFloat());
            $this->vehicleAngularVelocity = $in->readOptional($in->getFloat(...));
        }
        $this->onGround = $in->getBool();
        $this->tick = $in->getUnsignedVarLong();
    }
 
    protected function encodePayload(PacketSerializer $out) : void{
        $out->putByte($this->predictionType);
        $out->putVector3($this->position);
        $out->putVector3($this->delta);
        if($this->predictionType === self::PREDICTION_TYPE_VEHICLE){
            if($this->vehicleRotation === null){ // this should never be the case
                throw new \LogicException("CorrectPlayerMovePredictionPackets with type VEHICLE require a vehicleRotation to be provided");
            }
 
            $out->putFloat($this->vehicleRotation->getX());
            $out->putFloat($this->vehicleRotation->getY());
            $out->writeOptional($this->vehicleAngularVelocity, $out->putFloat(...));
        }
        $out->putBool($this->onGround);
        $out->putUnsignedVarLong($this->tick);
    }
 
    public function handle(PacketHandlerInterface $handler) : bool{
        return $handler->handleCorrectPlayerMovePrediction($this);
    }
}