Event Function

Help me i try $this->IronFarm($sender); but it didnt work!
<?php
namespace ZackyVNTM;
use pocketmine\plugin\PluginBase;
use pocketmine\utils\Config;
use pocketmine\command\Command;
use pocketmine\command\CommandSender;
use pocketmine\command\ConsoleCommandSender;
use pocketmine\math\Vector3;
use pocketmine\Player;
use pocketmine\event\block\BlockUpdateEvent;
use pocketmine\item\Item;
use pocketmine\event\Listener;
use pocketmine\level\Level;
use pocketmine\block\Block;
use pocketmine\block\DiamondOre;
use pocketmine\block\EmeraldOre;
use pocketmine\block\Stone;
use pocketmine\block\Water;
use pocketmine\block\Fence;
class Main extends PluginBase implements Listener{
public function onEnable () : void{
$this->getServer()->getLogger()->info("§l[§aUpgrade§r§l]§a Đã bật!");
$this->getServer()->getPluginManager()->registerEvents($this, $this);
}
public function onCommand(CommandSender $sender, Command $cmd, string $label, array $args) : bool{
if(!$sender instanceof Player){
$sender->sendMessage("§l[§aUpgrade§r§l]§r§c Vào máy chủ để chơi ");
return false;
}
if($cmd == "upgrade"){
if(empty($args[0])){
$sender->sendMessage ("§c->§e Farms§a Upgrade§c <-");
$sender->sendMessage ("§lIron - 10 Coins");
return true;
}
if(!empty($args[0])){
switch($args[0]){
case "iron":
$sender->sendMessage("§l[§aUpgrade§r§l]§a Bạn đã mua thành công Iron farms!");
$this->IronFarm($sender);
break;
default:
$sender->sendMessage ("§c->§e Farms§a Upgrade§c <-");
$sender->sendMessage ("§lIron - 10 Coins");
break;
}
}
}
return true;
}

public function IronFarm(BlockUpdateEvent $event){
$block = $event->getBlock();
$water = false;
$fence = false;
for($i = 2; $i <= 5; $i++) {
$nearBlock = $block->getSide($i);
if ($nearBlock instanceof Water) {
$water = true;
}elseif($nearBlock instanceof Fence) {
$fence = true;
}
if ($water && $fence) {
$id = mt_rand(1, 3);
switch($id){
case 50;
$newBlock = new DiamondOre();
break;
case 49;
$newBlock = new EmeraldOre();
break;
default:
$newBlock = new Stone();
}
$ironfarm = $event->getPlayer()->getBlock()->getLevel()->setBlock($block, $newBlock, true, false);
return;
}
}
}
}

 

PHP:

<?php
namespace ZackyVNTM;
use pocketmine\plugin\PluginBase;
use pocketmine\utils\Config;
use pocketmine\command\Command;
use pocketmine\command\CommandSender;
use pocketmine\command\ConsoleCommandSender;
use pocketmine\math\Vector3;
use pocketmine\Player;
use pocketmine\event\block\BlockUpdateEvent;
use pocketmine\item\Item;
use pocketmine\event\Listener;
use pocketmine\level\Level;
use pocketmine\block\Block;
use pocketmine\block\DiamondOre;
use pocketmine\block\EmeraldOre;
use pocketmine\block\Stone;
use pocketmine\block\Water;
use pocketmine\block\Fence;
class Main extends PluginBase implements Listener{
public function onEnable () : void{
$this->getServer()->getLogger()->info("§l[§aUpgrade§r§l]§a Đã bật!");
$this->getServer()->getPluginManager()->registerEvents($this, $this);
}
public function onCommand(CommandSender $sender, Command $cmd, string $label, array $args) : bool{
if(!$sender instanceof Player){
$sender->sendMessage("§l[§aUpgrade§r§l]§r§c Vào máy chủ để chơi :D");
return false;
}
if($cmd == "upgrade"){
if(empty($args[0])){
$sender->sendMessage ("§c->§e Farms§a Upgrade§c <-");
$sender->sendMessage ("§lIron - 10 Coins");
return true;
}
if(!empty($args[0])){
switch($args[0]){
case "iron":
$sender->sendMessage("§l[§aUpgrade§r§l]§a Bạn đã mua thành công Iron farms!");
$this->IronFarm($sender);
break;
default:
$sender->sendMessage ("§c->§e Farms§a Upgrade§c <-");
$sender->sendMessage ("§lIron - 10 Coins");
break;
}
}
}
return true;
}

public function IronFarm(BlockUpdateEvent $event){
$block = $event->getBlock();
$water = false;
$fence = false;
for($i = 2; $i <= 5; $i++) {
$nearBlock = $block->getSide($i);
if ($nearBlock instanceof Water) {
$water = true;
}elseif($nearBlock instanceof Fence) {
$fence = true;
}
if ($water && $fence) {
$id = mt_rand(1, 3);
switch($id){
case 50;
$newBlock = new DiamondOre();
break;
case 49;
$newBlock = new EmeraldOre();
break;
default:
$newBlock = new Stone();
}
$ironfarm = $event->getPlayer()->getBlock()->getLevel()->setBlock($block, $newBlock, true, false);
return;
}
}
}
}


 

of course this won't work, you are passing a CommandSender to a function that wants a BlockUpdateEvent.