public boolean isInSpace(Player p) {
    final Location l = p.getLocation();
    boolean air1 = true;
    boolean air2 = true;
    final int x = l.getBlockX();
    final int y = l.getBlockY();
    final int z = l.getBlockZ();
    final World w = l.getWorld();
    int height = 40;

        if (w.getName().equalsIgnoreCase("Regalis") && this.isInSpawn(p)) {
            height = 130;
        }

        for (int i = 0; i < height; i++) {
            final int id1 = w.getBlockTypeIdAt(x, y + i + 1, z);
            final int id2 = w.getBlockTypeIdAt(x, y - i, z);
            if (id1 != 0) {
                air1 = false;
            }
            if (id2 != 0) {
                air2 = false;
            }
        }
    if ((!air1) && (!air2))
        return false;
    return true;
}