FloatingTextParticle.php

<?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\particle;
 
use pocketmine\block\VanillaBlocks;
use pocketmine\entity\Entity;
use pocketmine\math\Vector3;
use pocketmine\network\mcpe\convert\TypeConverter;
use pocketmine\network\mcpe\protocol\AddActorPacket;
use pocketmine\network\mcpe\protocol\RemoveActorPacket;
use pocketmine\network\mcpe\protocol\types\entity\ByteMetadataProperty;
use pocketmine\network\mcpe\protocol\types\entity\EntityIds;
use pocketmine\network\mcpe\protocol\types\entity\EntityMetadataFlags;
use pocketmine\network\mcpe\protocol\types\entity\EntityMetadataProperties;
use pocketmine\network\mcpe\protocol\types\entity\FloatMetadataProperty;
use pocketmine\network\mcpe\protocol\types\entity\IntMetadataProperty;
use pocketmine\network\mcpe\protocol\types\entity\LongMetadataProperty;
use pocketmine\network\mcpe\protocol\types\entity\PropertySyncData;
use pocketmine\network\mcpe\protocol\types\entity\StringMetadataProperty;
 
class FloatingTextParticle implements Particle{
    //TODO: HACK!
 
    protected ?int $entityId = null;
    protected bool $invisible = false;
 
    public function __construct(
        protected string $text,
        protected string $title = ""
    ){}
 
    public function getText() : string{
        return $this->text;
    }
 
    public function setText(string $text) : void{
        $this->text = $text;
    }
 
    public function getTitle() : string{
        return $this->title;
    }
 
    public function setTitle(string $title) : void{
        $this->title = $title;
    }
 
    public function isInvisible() : bool{
        return $this->invisible;
    }
 
    public function setInvisible(bool $value = true) : void{
        $this->invisible = $value;
    }
 
    public function encode(Vector3 $pos) : array{
        $p = [];
 
        if($this->entityId === null){
            $this->entityId = Entity::nextRuntimeId();
        }else{
            $p[] = RemoveActorPacket::create($this->entityId);
        }
 
        if(!$this->invisible){
            $name = $this->title . ($this->text !== "" ? "\n" . $this->text : "");
 
            $actorFlags = (
                1 << EntityMetadataFlags::NO_AI
            );
            $actorMetadata = [
                EntityMetadataProperties::FLAGS => new LongMetadataProperty($actorFlags),
                EntityMetadataProperties::SCALE => new FloatMetadataProperty(0.01), //zero causes problems on debug builds
                EntityMetadataProperties::BOUNDING_BOX_WIDTH => new FloatMetadataProperty(0.0),
                EntityMetadataProperties::BOUNDING_BOX_HEIGHT => new FloatMetadataProperty(0.0),
                EntityMetadataProperties::NAMETAG => new StringMetadataProperty($name),
                EntityMetadataProperties::VARIANT => new IntMetadataProperty(TypeConverter::getInstance()->getBlockTranslator()->internalIdToNetworkId(VanillaBlocks::AIR()->getStateId())),
                EntityMetadataProperties::ALWAYS_SHOW_NAMETAG => new ByteMetadataProperty(1),
            ];
            $p[] = AddActorPacket::create(
                $this->entityId, //TODO: actor unique ID
                $this->entityId,
                EntityIds::FALLING_BLOCK,
                $pos, //TODO: check offset (0.49?)
                null,
                0,
                0,
                0,
                0,
                [],
                $actorMetadata,
                new PropertySyncData([], []),
                []
            );
        }
 
        return $p;
    }
}