Shooting Arrows Gives an Error

Hi guys, so I set up an entitydamagebyentityevent and the plugin works and everything but now, whenever an arrow hits an entity it throws an error... here is how it looks like:

http://pastebin.com/phTsbsKD

And here is the plugin code itself:

Code:java

 public ArrayList<Player> cooldown = new ArrayList<Player>();
 
@EventHandler
public void onsnowballfallevent(EntityDamageByEntityEvent event){
Snowball snowball = (Snowball) event.getDamager();
final Player attacker = (Player) snowball.getShooter();
if(event.getDamager() instanceof Snowball){
if(attacker instanceof Player){
if(!cooldown.contains(attacker)){
Entity e = event.getEntity();
Location l = e.getLocation();
World world = l.getWorld();
EntityType mob = EntityType.SQUID;
world.spawnEntity(l, mob);
world.playEffect(l, Effect.MOBSPAWNER_FLAMES, 20);
cooldown.add(attacker);
Bukkit.getServer().getScheduler().scheduleSyncDelayedTask(this, new Runnable(){
public void run(){
cooldown.remove(attacker);
}
}, 100);
 
}else if(cooldown.contains(attacker)){
event.setCancelled(true);
}
}
}
}
}

Thanks for checking this out for me!

 

MoeMix

You should be able to read that error.

http://forums.bukkit.org/threads/ho...ubleshoot-your-own-plugins-by-yourself.32457/

 

You should add a check to see if the entity is a Snowball

if(event.getDamager() instanceof Snowball){

//do the rest