Boyfarmer

What to do to obsidian did not damage the bedrock?
Please add code to this:

PHP:

<?php

namespace BoyFarmer;

use pocketmine\plugin\PluginBase as PluginBase;
use pocketmine\event\Listener as Listener;
use pocketmine\utils\TextFormat;
use pocketmine\event\block\BlockPlaceEvent;
use pocketmine\block\Block;
use pocketmine\block\Air;
use pocketmine\block\Obsidian;
use pocketmine\math\Vector3;
use pocketmine\item\Item;


class Main extends PluginBase implements Listener{


    public function onEnable(){
        $this->getServer()->getPluginManager()->registerEvents($this,$this);   
        $this->getServer()->getLogger()->info("§a[BoyFarmer] Plugin stwrzony przez dragonflex");
    }
   
    public function onPlace(BlockPlaceEvent $event){
    $blok = $event->getBlock();
    $gracz = $event->getPlayer();
    $y = $blok->getFloorY();
    $x = $blok->getFloorX();
    $z = $blok->getFloorZ();
     
      if($blok->getId() == 120){
       if(!($event->isCancelled())){
        //10
       $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY(), $blok->getFloorZ()), new Air());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-1, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-2, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-3, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-4, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-5, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-6, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-7, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-8, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-9, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-10, $blok->getFloorZ()), new Obsidian());
      //20
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-11, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-12, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-13, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-14, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-15, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-16, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-17, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-18, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-19, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-20, $blok->getFloorZ()), new Obsidian());
     //30
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-21, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-22, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-23, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-24, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-25, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-26, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-27, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-28, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-29, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-30, $blok->getFloorZ()), new Obsidian());
     //40
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-31, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-32, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-33, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-34, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-35, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-36, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-37, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-38, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-39, $blok->getFloorZ()), new Obsidian());
      $gracz->getLevel()->setBlock(new Vector3($blok->getFloorX(), $blok->getFloorY()-40, $blok->getFloorZ()), new Obsidian());
         }
      }
   }
}


 

MY EYES!!! IT BUUUUUURNS!

 

Nie add this to my code?