pocketmine\Player::dataPacket PHP Method

    public function dataPacket(DataPacket $packet, $needACK = false)
    {
        if (!$this->connected) {
            return false;
        }
        $timings = Timings::getSendDataPacketTimings($packet);
        $timings->startTiming();
        $this->server->getPluginManager()->callEvent($ev = new DataPacketSendEvent($this, $packet));
        if ($ev->isCancelled()) {
            $timings->stopTiming();
            return false;
        }
        $identifier = $this->interface->putPacket($this, $packet, $needACK, false);
        if ($needACK and $identifier !== null) {
            $this->needACK[$identifier] = false;
            $timings->stopTiming();
            return $identifier;
        }
        $timings->stopTiming();
        return true;
    }

 public function spawnDiscourager()
 {
     $dir = $this->player->getDirectionVector();
     if ($this->player->pitch > 45 or $this->player->pitch < -45) {
         $face = 0;
         // y
     } else {
         $face = self::$conversionTable[$this->player->getDirection()];
     }
     $center = $this->player->subtract($dir->multiply($this->main->getDistance()))->add(0, $this->player->eyeHeight)->floor();
     $l = $this->player->getLevel();
     if ($face === self::Y) {
         $this->overridenBlocks = [$l->getBlock($center->add(1, 0, 1)), $l->getBlock($center->add(1, 0, 0)), $l->getBlock($center->add(1, 0, -1)), $l->getBlock($center->add(0, 0, 1)), $l->getBlock($center), $l->getBlock($center->add(0, 0, -1)), $l->getBlock($center->add(-1, 0, 1)), $l->getBlock($center->add(-1, 0, 0)), $l->getBlock($center->add(-1, 0, -1))];
     } elseif ($face === self::X) {
         $this->overridenBlocks = [$l->getBlock($center->add(0, 1, 1)), $l->getBlock($center->add(0, 1, 0)), $l->getBlock($center->add(0, 1, -1)), $l->getBlock($center->add(0, 0, 1)), $l->getBlock($center), $l->getBlock($center->add(0, 0, -1)), $l->getBlock($center->add(0, -1, 1)), $l->getBlock($center->add(0, -1, 0)), $l->getBlock($center->add(0, -1, -1))];
     } elseif ($face === self::Z) {
         $this->overridenBlocks = [$l->getBlock($center->add(1, 1, 0)), $l->getBlock($center->add(1, 0, 0)), $l->getBlock($center->add(1, -1, 0)), $l->getBlock($center->add(0, 1, 0)), $l->getBlock($center), $l->getBlock($center->add(0, -1, 0)), $l->getBlock($center->add(-1, 1, 0)), $l->getBlock($center->add(-1, 0, 0)), $l->getBlock($center->add(-1, -1, 0))];
     }
     foreach ($this->overridenBlocks as $b) {
         $pk = new UpdateBlockPacket();
         $pk->x = $b->x;
         $pk->y = $b->y;
         $pk->z = $b->z;
         $pk->block = $this->main->getBlockType()->getId();
         $pk->meta = $this->main->getBlockType()->getDamage();
         $this->player->dataPacket($pk);
     }
 }