PlayerUpdateEntityOverridesPacket.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 pmmp\encoding\Byte;
use pmmp\encoding\ByteBufferReader;
use pmmp\encoding\ByteBufferWriter;
use pmmp\encoding\LE;
use pmmp\encoding\VarInt;
use pocketmine\network\mcpe\protocol\serializer\CommonTypes;
use pocketmine\network\mcpe\protocol\types\OverrideUpdateType;
 
class PlayerUpdateEntityOverridesPacket extends DataPacket implements ClientboundPacket{
    public const NETWORK_ID = ProtocolInfo::PLAYER_UPDATE_ENTITY_OVERRIDES_PACKET;
 
    private int $actorRuntimeId;
    private int $propertyIndex;
    private OverrideUpdateType $updateType;
    private ?int $intOverrideValue;
    private ?float $floatOverrideValue;
 
    private static function create(int $actorRuntimeId, int $propertyIndex, OverrideUpdateType $updateType, ?int $intOverrideValue, ?float $floatOverrideValue) : self{
        $result = new self;
        $result->actorRuntimeId = $actorRuntimeId;
        $result->propertyIndex = $propertyIndex;
        $result->updateType = $updateType;
        $result->intOverrideValue = $intOverrideValue;
        $result->floatOverrideValue = $floatOverrideValue;
        return $result;
    }
 
    public static function createIntOverride(int $actorRuntimeId, int $propertyIndex, int $value) : self{
        return self::create($actorRuntimeId, $propertyIndex, OverrideUpdateType::SET_INT_OVERRIDE, $value, null);
    }
 
    public static function createFloatOverride(int $actorRuntimeId, int $propertyIndex, float $value) : self{
        return self::create($actorRuntimeId, $propertyIndex, OverrideUpdateType::SET_FLOAT_OVERRIDE, null, $value);
    }
 
    public static function createClearOverrides(int $actorRuntimeId, int $propertyIndex) : self{
        return self::create($actorRuntimeId, $propertyIndex, OverrideUpdateType::CLEAR_OVERRIDES, null, null);
    }
 
    public static function createRemoveOverride(int $actorRuntimeId, int $propertyIndex) : self{
        return self::create($actorRuntimeId, $propertyIndex, OverrideUpdateType::REMOVE_OVERRIDE, null, null);
    }
 
    public function getActorRuntimeId() : int{ return $this->actorRuntimeId; }
 
    public function getPropertyIndex() : int{ return $this->propertyIndex; }
 
    public function getUpdateType() : OverrideUpdateType{ return $this->updateType; }
 
    public function getIntOverrideValue() : ?int{ return $this->intOverrideValue; }
 
    public function getFloatOverrideValue() : ?float{ return $this->floatOverrideValue; }
 
    protected function decodePayload(ByteBufferReader $in) : void{
        $this->actorRuntimeId = CommonTypes::getActorRuntimeId($in);
        $this->propertyIndex = VarInt::readUnsignedInt($in);
        $this->updateType = OverrideUpdateType::fromPacket(Byte::readUnsigned($in));
        if($this->updateType === OverrideUpdateType::SET_INT_OVERRIDE){
            $this->intOverrideValue = LE::readSignedInt($in);
        }elseif($this->updateType === OverrideUpdateType::SET_FLOAT_OVERRIDE){
            $this->floatOverrideValue = LE::readFloat($in);
        }
    }
 
    protected function encodePayload(ByteBufferWriter $out) : void{
        CommonTypes::putActorRuntimeId($out, $this->actorRuntimeId);
        VarInt::writeUnsignedInt($out, $this->propertyIndex);
        Byte::writeUnsigned($out, $this->updateType->value);
        if($this->updateType === OverrideUpdateType::SET_INT_OVERRIDE){
            if($this->intOverrideValue === null){ // this should never be the case
                throw new \LogicException("PlayerUpdateEntityOverridesPacket with type SET_INT_OVERRIDE requires intOverrideValue to be provided");
            }
            LE::writeSignedInt($out, $this->intOverrideValue);
        }elseif($this->updateType === OverrideUpdateType::SET_FLOAT_OVERRIDE){
            if($this->floatOverrideValue === null){ // this should never be the case
                throw new \LogicException("PlayerUpdateEntityOverridesPacket with type SET_FLOAT_OVERRIDE requires floatOverrideValue to be provided");
            }
            LE::writeFloat($out, $this->floatOverrideValue);
        }
    }
 
    public function handle(PacketHandlerInterface $handler) : bool{
        return $handler->handlePlayerUpdateEntityOverrides($this);
    }
}