Solved Monster Existence

I wanna make sure there is a monster in the location that I randomly set. I'm currently using EntityDeathEvent, but I don't know what to do.

 

@kangkyuchang I'm not sure what exactly you mean but, i think this should work for getting the monsters near your location.

Code:Java

// A list of all the monsters found, if the list is empty, there's no monsters
List<LivingEntity> monsters = new ArrayList<>();
 
// The location to check
Location location = ...;
 
for (LivingEntity entity : location.getWorld().getLivingEntities()) {
    if (!isMonster(entity)) continue;
 
    // Use this if you want to only check for that exact location
    if (location.equals(entity.getLocation())) monsters.add(entity);
 
    // Use this if you want to check for monsters within a certain range of the location
    int range = 1; // 1 block
    if (location.distanceSquared(entity.getLocation()) <= range * range) monsters.add(entity);
}
 
// Outside your method
 
// Check if the entity is a monster
public boolean isMonster(Entity entity) {
    return true;
}

 

I'm sorry. I didn't explain it exactly. I'm going to teleport when there's no monster in my chosen area

 

@kangkyuchang In that case, i think the distanceSquared method should work for you.

 

World#getNearbyEntities(...) gets entities nearby location in radius r

 

@NukerFall Wouldn't it be more effecient to only loop the living entities if you only want monsters? Also, i read somewhere that the distanceSquared(Location) method is more effective than the distance(Location) method, do you know if the getNearbyEntities() methods use that?

 

never thought about that, cuz never used it.

Code:

...
main.getCommand("customteleport").setExecutor(this);
...
public void onCommand(...) {
    setRandomLocationForTeleport();
    if (World.getNearbyEntities(location, r, r, r).size() == 0) {
        teleport((Player) sender);
    } else {
    sender.sendMessage("Monsters nearby!");
    }
    return true;
}

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

Code:

Location location = new Location(e.getEntity().getWorld(), i, 63, i2);
                        if(loc2 == i2)
                        {
                            for(LivingEntity entity : location.getWorld().getLivingEntities())
                            {
                                if(monsters.contains(entity))
                                {
                                    p.sendMessage("TEST");
                                    return;
                                }
                                if(!isMonster(entity)) continue;
                                if(location.equals(entity.getLocation())) monsters.add(entity);
                            }
                        }

I did this but it doesn't work.

 

I sent you a code, try it. Maybe send all the class so we can look for all the fileds and methods you use.