Custom Hitbox

Hi! I have created a 3d skin and I have skinned a human entity, which brings me the problem that the hitbox of the entity is like that of the human entity and I want to make the hitbox adapt to the size of the skin. is there any way to modify the hitbox?

Spawn Entity function

PHP:

    public static function setNPCTomb(Player $player) {
        $nbt = Entity::createBaseNBT($player, null, 2, 2);
        $dir = Murder::getInstance()->getDataFolder() . "Entities" . DIRECTORY_SEPARATOR . "Skins" . DIRECTORY_SEPARATOR . "Tomb.png";
        $img = @imagecreatefrompng($dir);
        $skinbytes = '';
        $values = (int)@getimagesize($dir)[1];
        for($y = 0; $y < $values; $y++) {
            for($x = 0; $x < 64; $x++) {
                $bytes = @imagecolorat($img, $x, $y);
                $a = ((~((int)($bytes >> 24))) << 1) & 0xff;
                $b = ($bytes >> 16) & 0xff;
                $c = ($bytes >> 8) & 0xff;
                $d = $bytes & 0xff;
                $skinbytes .= chr($b) . chr($c) . chr($d) . chr($a);
            }
        }
        @imagedestroy($img);
        $skinTag = new CompoundTag("Skin", [
            "Name" => new StringTag("Name", $player->getSkin()->getSkinId()),
            "Data" => new ByteArrayTag("Data", $skinbytes),
            "GeometryName" => new StringTag("GeometryName", "geometry.geometry.tomb"),
            "GeometryData" => new ByteArrayTag("GeometryData", file_get_contents(Murder::getInstance()->getDataFolder() . "Entities" . DIRECTORY_SEPARATOR . "Geometries" . DIRECTORY_SEPARATOR . "TombGeometry.json"))
        ]);
        $nbt->setTag($skinTag);
        $npc = new MurderTomb($player->getLevel(), $nbt);
        $npc->setNameTagAlwaysVisible(false);
        $npc->setNameTagVisible(false);
        $npc->yaw = $player->getYaw();
        $npc->spawnToAll();
    }

Entity Class:

PHP:

<?php

declare(strict_types=1);

namespace IvanCraft623\MurderMystery\Entity;

use pocketmine\entity\{Monster, EntityIds};
use pocketmine\entity\Human;

class MurderTomb extends Human {

    public function getName() : string {
        return "";
    }
}

The entity looks something like this:

 

You can use slapper's protocol.

 

PHP:

<?php

declare(strict_types=1);

namespace IvanCraft623\MurderMystery\Entity;

use pocketmine\entity\{Monster, EntityIds};
use pocketmine\entity\Human;

class MurderTomb extends Human {

    public $weight = 0.5;
    public $height = 0.5;

    public function getName() : string {
        return "";
    }
}