Why doesn't this plugin work?

Hello,

I'm totally new to plugin coding and wrote my first plugin.
It should teleport you to PVP world at specific position if [PVP] is on the sign, but only if there are not more than 2 players in PVP world.
It just doesn't work, no error, nothing!

My code:

Spoiler

Code:

<?php

namespace kjjnetwork\TwinPVP;

use pocketmine\plugin\PluginBase;
use pocketmine\event\Listener;
use pocketmine\Server;
use pocketmine\command\Command;
use pocketmine\command\CommandSender;
use pocketmine\event\player\PlayerInteractEvent;
use pocketmine\math\Vector3;
use pocketmine\tile\Sign;
use pocketmine\event\block\SignChangeEvent;
use pocketmine\level\Position;
use pocketmine\entity\Entity;
use pocketmine\event\block\BlockPlaceEvent;
use pocketmine\event\block\BlockBreakEvent;
use pocketmine\item\Item;
use pocketmine\tile\Tile;

class Main extends PluginBase implements Listener{
  private $api, $server, $path;

  public function onEnable(){
  $this->getServer()->getPluginManager()->registerEvents($this, $this);
  }

  public function playerBlockTouch(PlayerInteractEvent $event){
  if($event->getBlock()->getID() == 323 || $event->getBlock()->getID() == 63 || $event->getBlock()->getID() == 68){
  $sign = $event->getPlayer()->getLevel()->getTile($event->getBlock());
  if(!($sign instanceof Sign)){
  return;
  }
  $sign = $sign->getText();
  $players = $event->getPlayer("PVP");
  $x = "107";
  $y = "76";
  $z = "128";
  if($sign[0]=='[PVP]'){
  if($players > 2 !== true){
  if(Server::getInstance()->loadLevel("PVP") != false){
  $event->getPlayer()->sendMessage("[server] teleporting you to arena...");
  $event->getPlayer()->teleport(new Position($x, $y, $z, $this->getServer()->getLevelByName("PVP")));
 
  }else{
  $event->getPlayer()->sendMessage("[server] There are already two people in the arena!");
  }
  }
  }
  }
  }
}

Please help me
Thanks in advance!

Do you get any errors?
(Next time please use code instead of spoiler to write your codes )

Yes, I looked into logs:

2015-05-17 07:07:18 [NOTICE] ClassCastException: "Object of class pocketmine\Player could not be converted to int" (E_NOTICE) in "/TwinPVP/src/kjjnetwork/TwinPVP/Main" at line 41
2015-05-17 07:07:18 [CRITICAL] Could not pass event pocketmine\event\player\PlayerInteractEvent to TwinPVP v0.105: Object of class pocketmine\Player could not be converted to int on kjjnetwork\TwinPVP\Main

What!?
$players = $event->getPlayer("PVP");
You can't do this in this way. What did you want to do?

I wanted to get all players from world PVP and if there are not more than 2 players teleport to PVP world.

Thanks for your patience!

Btw: LOVE MSpawns!

Can I just say that sounds like a cool plugin you got there

To count players in a world you can do:

PHP:

$count = count($this->getServer()->getLevelByName("PVP")->getPlayers());


Then

PHP:

if($count <= 2){
   //Do what you want
}

Thank you
I am using that for special PVP mode where only 2 players can fight together.

You are welcome

Could I also use this plugin but edit it a bit for my HG Server?

Did that, now it gives me error for that line

2015-05-17 07:47:58 [CRITICAL] Could not pass event pocketmine\event\player\PlayerInteractEvent to TwinPVP v0.105: Undefined property: kjjnetwork\TwinPVP\Main::$plugin on kjjnetwork\TwinPVP\Main
2015-05-17 07:47:58 [NOTICE] UndefinedPropertyException: "Undefined property: kjjnetwork\TwinPVP\Main::$plugin" (E_NOTICE) in "/TwinPVP/src/kjjnetwork/TwinPVP/Main" at line 35

@DunxandMinecraft sure, you can use it
I have a question: can you give me a few tips for writing a hunger games plugin per PM?
I have a minigame server and would LOVE to offer HG too

We can DM

Anyone has a clue why this doesn't work?

Nope, Sorry not me

It is best to use: [spoiler][php]

@PEMapModder do you have a clue why it isn't working?

What I know is, learn plugin development and PHP properly. I don't understand how come you got the private $api there.
Oh also block IDs are never greater than 255. I guess @onebone gave that bad practice.

The teleport + private api part is from @leonchang99 SignPortal plugin.
Why is SignPortal working then?

I didn't say it brings errors. It is just useless.
#Blame99leonchang

Wow, really? I was making an almost same plugin!
Just it is 2v2, not 1v1.