interval function not working

[wimw]

Hello,
Does anybody have an idea why the delay function in the script below is not
working?
I'm trying to slowly move an image horizontally.
Another movie generates the value for "p'".
If p==2, the trace "test 01" is executed, so that's all right. After that, the
delay function should be executed (and I should see the trace "test 02", but is
isn't.
Funny thing is, if I put the interval call and the delay function outside the
if-construction, it works.
Any ideas?
Thanks,
Wim

onClipEvent (enterFrame) {
//P1
if (_root.p == 1) {
_root.screen._x = 100;
//P2
} else if (_root.p == 2) {
intID = setInterval(delay, 100);
_root.x = 100;
trace ("test 01")
function delay() {
trace ("test02")
_root.x = _root.x-1;
_root.screen._x = _root.x;
updateAfterEvent();
if (_root.screen._x<=-500) {
clearInterval(intID);
_root.pfree = true;
}
}
//P3
} else if (_root.p == 3) {
_root.screen._x = -1100;
//P4
} else if (_root.p == 4) {
_root.screen._x = -1700;
//P5
} else if (_root.p == 5) {
_root.screen._x = -2300;
}
}

[Jeckyl]

do not declare functions inside an event.

declare the function separately and preferably before the event.

The problem is more specifically that you are using the function 'delay'
before you have defined it.

[wimw]

Yes, I expected something like that. Wat would be the best place for the function? Should it be in the same movie as frome where it is called?
Thx,
Wim

[CesareRocchi]

also consider declaring your functions as local my means of 'var' like:

var f = function () {
trace("test");
}
setInterval(...

Also, less readable for non coders, u can exploit lexical closure like:

setInterval(function f() {
trace("test");
},
100);

HTH,

-c.