Why i cant setXpLevel() ?

I cant add xp level
code:

PHP:

<?php

namespace core\Task;

use pocketmine\scheduler\Task;
use core\Main;
use pocketmine\plugin\Plugin;
use pocketmine\event\Listener;
use pocketmine\entity\Human;

class MainTask extends Task implements Listener {

    public function __construct(Main $plugin){
        $this->plugin = $plugin;
    }

    public function onRun(int $currentTick){
        foreach($this->plugin->getServer()->getOnlinePlayers() as $player){
            $human = Human::class;
            $exp = $human->getXpLevel() + 1;
            $human->setXpLevel((int)$exp);
            $player->sendPopup("§e+§a1§bXp§r\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n");
        }
    }
}


 

The code you posted should be in PHP tags like so:

Code:

[PHP]code here[/PHP]

, to make it properly readable to others.

When I look at your code there's numerous errors. First of all, on the class declaration line:

PHP:

class MainTask extends Task implements Listener {

Your task does not listen for events so remove the Listener implementation like so:

PHP:

class MainTask extends Task {

Secondly, you're assigning a dynamic class property, which you might not want to do for the sake of readability. Add this right under your class declaration:

PHP:

    private $plugin;


Then for your actual issue, you're setting $human to Human::class, which is a string. ::class is a reserved 'constant' for classes which simply returns the path to the class. You already have a Human however, because Player extends Human. You can remove this line:

PHP:

 $human = Human::class; 

And you can rename further usages of $human to $player.

To improve your code further, you can look at this part:

PHP:

$exp = $player->getXpLevel() + 1;
$player->setXpLevel((int)$exp);


getXpLevel() already returns an integer, so you can simply remove the (int) cast, like so:

PHP:

$exp = $player->getXpLevel() + 1;
$player->setXpLevel($exp);