A set of functions for finding and getting a template and being able to pass parameters to it via an array. Borrowed from https://github.com/woothemes/woocommerce/blob/e3cc5931bad28b24233fb9d14c61c096cbd4b122/includes/wc-core-functions.php#L91

get_template.php

<?php
/**
 * Get other templates (e.g. product attributes) passing attributes and including the file.
 *
 * @access public
 * @param mixed $template_name
 * @param array $args (default: array())
 * @param string $template_path (default: '')
 * @param string $default_path (default: '')
 * @return void                                                                                                                                                                                              */
function cur_get_template( $template_name, $args = array(), $template_path = '', $default_path = '' ){

    if ( $args && is_array($args) )
        extract( $args );

    $located = cur_locate_template( $template_name, $template_path, $default_path );

    if( false != $located ){
        do_action( 'cur_before_template_part', $template_name, $template_path, $located, $args );
        include( $located );
        do_action( 'cur_after_template_part', $template_name, $template_path, $located, $args );
    }
    return $located;
}

/**
 * Locate a template and return the path for inclusion.
 *
 * This is the load order:
 *
 *      yourtheme       /   $template_path  /   $template_name
 *      yourtheme       /   $template_name
 *      $default_path   /   $template_name
 *
 * @access public
 * @param mixed $template_name
 * @param string $template_path (default: '')
 * @param string $default_path (default: '')
 * @return string
 */
function cur_locate_template( $template_name, $template_path = '', $default_path = '' ) {

    // TODO set template path. This is the folder you'd create in your theme folder
    if ( ! $template_path ) $template_path = 'templates/';
    // TODO define YOUR_PLUGIN_PATH
    if ( ! $default_path ) $default_path = YOUR_PLUGIN_PATH . '/templates/';

    // Look within passed path within the theme - this is priority
    $template = locate_template(
        array(
            trailingslashit( $template_path ) . $template_name,
            $template_name
        )
    );

    // Get default template
    if ( ! $template )
        $template = $default_path . $template_name;

    if( file_exists( $template ) ){
        // Return what we found
        return apply_filters('cur_locate_template', $template, $template_name, $template_path);
    } else {
        return false;
    }
}