Spawning alchemics

@EventHandler
    public void alchemistrySoul(GameStateChangeEvent event) {
        if (event.getGameStateTo().equals(GameState.ACTIVE)) {
            Game game = event.getGame();
            Map<Integer, Location> locat = event.getGame().getAlchemicsLocations();
            new BukkitRunnable() {
                @Override
                public void run() {
                    if (game.getGameState().equals(GameState.ENDING)) this.cancel();
                    for (Map.Entry<Integer, Location> entry : locat.entrySet()) {
                        int rad = entry.getKey();
                        Location loc = entry.getValue();
                        Collection<Entity> nearbyEntities = loc.getWorld().getNearbyEntities(loc, rad, rad, rad);
                        if (Mobs.countMobs(nearbyEntities, Skeleton.class) > 12) return;
                        if (Mobs.countMobs(nearbyEntities, Player.class) != 0) {
                            int randomX = Mobs.randomInRadius(rad);
                            int randomZ = Mobs.randomInRadius(rad);
                            if (loc.getWorld().getHighestBlockAt(randomX, randomZ) != null) {
                                int y = loc.getWorld().getHighestBlockAt(randomX, randomZ).getLocation().getBlockY();
                                Location spawnLoc = new Location(loc.getWorld(), randomX, y, randomZ);
                                Skeleton soul = (Skeleton) spawnLoc.getWorld().spawnEntity(spawnLoc, EntityType.SKELETON);
                                Mobs.soulDef(soul);
                            }
                        }

                    }
                }
            }.runTaskTimer(plugin, 0, 240);
        }