function load_first() {
  var id_of_first = m_data.load("first_file_to_be_loaded", load_second);
}

function load_second() {
  var id_of_second = m_data.load("second_file_to_be_loaded", load_third);
}

function load_third() {
  var id_of_third = m_data.load("third_file_to_be_loaded");
}

// start load sequence:

load_first();

var m_ctl    = require("control");
var m_trans  = require("transform");
var m_scs    = require("scenes");

// Define your movement parameters:

var name_of_my_object = "my_objects_name"; // Fill in the (Blender) name of your object.
var x_speed = 1;                           // Set your desired speed along X axis (0 for no movement in this axis).
var y_speed = -0.5;                        // Set your desired speed along Y axis (0 for no movement in this axis).
var z_speed = 0;                           // Set your desired speed along Z axis (0 for no movement in this axis).

// Set up sensor:

var elapsed_sensor = m_ctl.create_elapsed_sensor();
m_ctl.create_sensor_manifold(m_scs.get_object_by_name(name_of_my_object), "MOVE", m_ctl.CT_CONTINUOUS, [elapsed_sensor], null, move_cb);

// Callback function:

function move_cb (obj, id) {
  var elapsed = m_ctl.get_sensor_value(obj, id, 0);
  m_trans.move_local(obj, x_speed*elapsed, y_speed*elapsed, z_speed*elapsed); 
}