다른 몹이 나를 공격하면, 그 몹을 공격하는 좀비 코딩

    @EventHandler
    public void onPlayerAttack(EntityDamageByEntityEvent event) {
        // Only care if a player attacked something
        if (!(event.getDamager() instanceof Player player)) return;
        if (!(event.getEntity() instanceof LivingEntity target)) return;

        // Loop through nearby entities to find the player's guardians
        for (Entity entity : player.getWorld().getNearbyEntities(player.getLocation(), 20, 20, 20)) {
            if (entity instanceof Zombie z && z.hasMetadata("owner")) {
                String ownerId = z.getMetadata("owner").get(0).asString();
                if (ownerId.equals(player.getUniqueId().toString())) {

                    // Don’t allow the guardian to attack its owner or another guardian
                    if (target instanceof Player p && p.getUniqueId().equals(player.getUniqueId())) continue;
                    if (target instanceof Zombie otherZ && otherZ.hasMetadata("owner")) continue;

                    z.setTarget(target);
                }
            }
        }
    }