Help with scrolling background

Question

i am following a tutorial and in it, when the Hero hits a
wall he respawns somewhere on the screen. The problem with that
was, that i didnt know where he would respawn. And In order to make
the maze bigger i used a scrolling background and I couldnt figure
out how to change the respawn location either. Here is the site
that I am following the tutorial from
http://www.emanueleferonato.com/2007/02/09/flash-game-creation-tutorial-part-51/
Below is the code that I'm using
onClipEvent (load) {
yspeed = 0;
xspeed = 0;
wind = 0.00;
power = 0.65;
gravity = 0.1;
upconstant = 0.75;
friction = 0.99;
onClipEvent (enterFrame) {
if (Key.isDown(Key.LEFT)) {
xspeed = xspeed-power;
if (Key.isDown(Key.RIGHT)) {
xspeed = xspeed+power;
if (Key.isDown(Key.UP)) {
yspeed = yspeed-power*upconstant;
if (Key.isDown(Key.DOWN)) {
yspeed = yspeed+power*upconstant;
xspeed = (xspeed+wind)*friction;
yspeed = yspeed+gravity;
_root.wall._y -=yspeed;
_root.wall._x -=xspeed;
_rotation = _rotation+xspeed;
if (_root.wall.hitTest(_x, _y, true)) {
xspeed = 0;
yspeed = 0;
_root.wall._x = 2500;
_root.wall._y = 1681;
Can anyone help me?

Answer 1

there's no width property in a2.  use _width:
animator = createEmptyMovieClip('animator',1);
bg_1 = animator.attachMovie('bg_mc','bg_1',1);
bg_2 = animator.attachMovie('bg_mc','bg_2',2);
bg_1._x = -bg_1._width/2;
bg_2._x = bg_2._width/2;
speed = 1;
cloudWidth = 380;
animator.onEnterFrame = function () {
    bg_1._x -= speed;
    bg_2._x -= speed;
    if (bg_1._x <= -bg_1._width) bg_1._x = cloudWidth;
    if (bg_2._x <= -bg_2._width) bg_2._x = cloudWidth;