The definition of the murderer and the one who died

Hi, people. Now a whole week tormented with identifying and attacking the deceased.

Code:

Code:

public function OffPvP(EntityDamageByEntityEvent $e){
$cause = $e->getEntity()->getPlayer()->getName();
if ($e->getEntity() instanceof Player) {
if($e->getDamager() instanceof Player) {
$killer = $e->getDamager()->getPlayer()->getName();


if($this->isGameOn == 0){
$e->setCancelled();

}
if($this->isGameOn == 1){
if($this->whoIs[$cause] == 1){
if($this->whoIs[$killer] == 1){
$e->setCancelled();
}
} 

Error:

Code:

2015-06-09 23:01:34 [NOTICE] InvalidArgumentException: "Argument 1 passed to eddir\microBattle::OffPvP() must be an instance of pocketmine\event\entity\EntityDamageByEntityEvent, instance of pocketmine\event\entity\EntityDamageEvent given, called in phar:///home/gs2004/PocketMine-MP.phar/src/pocketmine/plugin/MethodEventExecutor.php on line 36 and defined" (E_RECOVERABLE_ERROR) in "/microBattle [OW]/src/eddir/microBattle" at line 1201
2015-06-09 23:01:34 [CRITICAL] "Could not pass event 'pocketmine\event\entity\EntityDamageEvent' to 'microBattle v0.1 beta for OW': Argument 1 passed to eddir\microBattle::OffPvP() must be an instance of pocketmine\event\entity\EntityDamageByEntityEvent, instance of pocketmine\event\entity\EntityDamageEvent given, called in phar:///home/gs2004/PocketMine-MP.phar/src/pocketmine/plugin/MethodEventExecutor.php on line 36 and defined on eddir\microBattle

Maybe somebody knows how to do?

Handle EntityDamageEvent and check if event is instanceof EntityDamageByEntityEvent in the handler.

PHP:

public function onHurt(EntityDamageEvent $e){
            if($e instanceof EntityDamageByEntityEvent){
                if($e->getDamager() instanceof Player && $e->getEntity() instanceof Player){
                          $killer = $e->getDamager()->getPlayer()->getName();
                          $cause = $e->getEntity()->getPlayer()->getName();
                          if($this->isGameOn == 0){
                                        $e->setCancelled();

                          }
                          if($this->isGameOn == 1){
                                      if($this->whoIs[$cause] == 1){
                                                        if($this->whoIs[$killer] == 1){
                                                                   $e->setCancelled();
                                                         }
                                      }
                          }
        }
}

wow, works perfectly, thank you very much