How can I get the nearby entities of a location?

I know how to get the nearby entities of a player but I dont want to do that

 

Ask lazer. Jks, here's a legit answer down below

You can either spawn an entity, call .getNearbyEntities on it, and then remove it (I recommend using a falling block as this entity, as it's a bit harder to see than, say, a creeper, but it's still not the best way), or you can (if you just want players) loop through all the online players and get their distance (double distance = player.getLocation().distance(centerLocation)), and then check if the distance is less than or equal to what you need. If you want to apply this to mobs also, just loop all entities in the world (World.getEntities()) and run the same check.

 

Haha funny! I think Ill check online players distance. I was going to get the chunk of the location and check the entities in the chunk to see if their distance is less than x but I would miss some nearby players if the location is on the edge of a chunk.

 

I've got a method for this:

Code:java

public Entity[] getNearbyEntities(Location l, int radius) {
    int chunkRadius = radius < 16 ? 1 : (radius - (radius % 16)) / 16;
    HashSet<Entity> radiusEntities = new HashSet<Entity>();
    for (int chX = 0 - chunkRadius; chX <= chunkRadius; chX++) {
        for (int chZ = 0 - chunkRadius; chZ <= chunkRadius; chZ++) {
            int x = (int) l.getX(), y = (int) l.getY(), z = (int) l.getZ();
            for (Entity e : new Location(l.getWorld(), x + (chX * 16), y, z
                    + (chZ * 16)).getChunk().getEntities()) {
                if (e.getLocation().distance(l) <= radius
                        && e.getLocation().getBlock() != l.getBlock()) {
                    radiusEntities.add(e);
                }
            }
        }
     }
     return radiusEntities.toArray(new Entity[radiusEntities.size()]);
}

 

Obviously (I realized I forgot this in my original post), square the first location and then use .distanceSquared, so it's a bit less intensive on the CPU.

 

Will this force chunks to be loaded? If I would use this near the border of loaded chunks, can this lead to chunks getting loaded but not unloaded anymore or other related problems?

 

I don't think so.

 

Sorry I am digging up a old thread but how did you fix it? MrSnare

 

I think you can use the method minnymin3 provided, just copy and paste it.

 

Hey i did this

Code:java

public class LocationTask implements Runnable {
 
    public double distance = 3.0;
 
    @Override
    public void run() {
        HashMap<Location, String> blocks = tracker.getBlocks();
        for(Player player : Bukkit.getOnlinePlayers()){
            for (Map.Entry<Location, String> entry : blocks.entrySet()) {
                if(entry.getValue().equals("Correct String")){
                    if(player.getLocation().distance(entry.getKey()) < distance){
                        //you hit the jackpot baby!
                    }
                }
            }
        }
    }
 
}

 

MrSnare thanks!