myCRED Daily limit for mycred_give

/**
 * Overwrite the mycred_give shortcode
 * Runs after myCRED has registered the shortcode in order for us
 * to remove it and replace it with our own.
 */
add_action( 'mycred_init', 'custom_mycred_start' );
function custom_mycred_start() {
    remove_shortcode( 'mycred_give' );
    add_shortcode( 'mycred_give', 'mycred_custom_render_shortcode_give' );
}

if ( ! function_exists( 'mycred_custom_render_shortcode_give' ) ) :
    function mycred_custom_render_shortcode_give( $atts, $content )
    {
        if ( ! is_user_logged_in() ) return;

        extract( shortcode_atts( array(
            'amount'  => NULL,
            'user_id' => '',
            'log'     => '',
            'ref'     => 'gift',
            'limit'   => 0,
            'type'    => 'mycred_default'
        ), $atts ) );

        if ( $amount === NULL )
            return '<strong>' . __( 'error', 'mycred' ) . '</strong> ' . __( 'Amount missing!', 'mycred' );

        if ( empty( $log ) )
            return '<strong>' . __( 'error', 'mycred' ) . '</strong> ' . __( 'Log Template Missing!', 'mycred' );

        $mycred = mycred_get_settings();

        if ( empty( $user_id ) )
            $user_id = get_current_user_id();

        // Check for exclusion
        if ( $mycred->exclude_user( $user_id ) ) return;

        // Prep amount
        $amount = $mycred->number( $amount );

        // Daily limit handling
        if ( $limit == 'daily' ) {
            // Todays date as a numeric value
            $today = (int) date_i18n( 'Ymd' );

            // Check if user has received points today
            if ( $mycred->has_entry( $ref, $today, $user_id ) ) return;

            // Save today as a reference id to check for
            $mycred->add_creds(
                $ref,
                $user_id,
                $amount,
                $log,
                $today,
                '',
                $type
            );
        }
        // Default limit handling
        else {
            $limit = abs( $limit );
            if ( $limit != 0 && mycred_count_ref_instances( $ref, $user_id ) >= $limit ) return;

            $mycred->add_creds(
                $ref,
                $user_id,
                $amount,
                $log,
                '',
                '',
                $type
            );
        }
    }
endif;