Sort Posts by Menu Order

spbmo.php

<?php
/*
Plugin Name: Sort Posts by Menu Order (SPBMO)
Description: This plugin adds support to posts or custom post types for menu order, and sorts queries for those post types by menu_order on the front end. It's reccommended that you download <a href="https://wordpress.org/plugins/simple-page-ordering/">Simple Page Ordering</a> if you'd like to display by menu_order in the admin and to add Drag/Drop support.
Plugin URI:  http://julienmelissas.com/add-drag-drop-support-to-posts
Author:      Julien Melissas
Author URI:  http://julienmelissas.com
Version:     1.0
*/

// This function grabs the post types array and applies a filter for developer modification
function spbmo_get_spbmo_post_types() {
  $post_types = apply_filters('spbmo_post_types', array('post'));

  return $post_types;
}

// This function modifies the query for each post type in our option
function get_posts_by_menu_order( $query ) {
  $post_types = spbmo_get_spbmo_post_types();

  // Check to make sure we're not in the admin panel or feed
  if(!is_admin() && !is_feed() ) {
    foreach ($post_types as $post_type) {
      // Make sure we're in the main query
      if (is_main_query($post_type)) {
        $query->set( 'orderby', 'menu_order' );
        $query->set( 'order', 'ASC' );
      }
    }
  }
}
// Now force the post type to display based on menu_order
add_action( 'pre_get_posts', 'get_posts_by_menu_order' );

// This function adds page-attribute support for each post type in our option
function spbmo_alter_post_types() {
  $post_types = spbmo_get_spbmo_post_types();

  foreach ($post_types as $post_type) {
    // First set up the post type so that they can be sorted by menu_order...
    add_post_type_support( $post_type, 'page-attributes' );
  }
}
add_action('wp_loaded', 'spbmo_alter_post_types');

// This is an example of how to add other post types
function spbmo_post_types_alter_value($option_value) {
  $option_value = array(
    'post',
    'story'
  );

  return $option_value;
}
add_filter('spbmo_post_types', 'spbmo_post_types_alter_value');