Alpha and Functions :(

Hi guys , this is for a friend . Please help me help him out :)

ok ... here's the scenario :(
I have a movie Clip on stage named M whose alpha I will be playing with . The basic idea is at load I will be decreasing it by decrements of 5 . But whe it reaches a minimum , I want to create a function which will increase it again by +5 . Simmilarily another function to check wether it has reached a Maximum , and if so , then again start decreasing by -5 . That is the basic logic .
On frame 1 , I have

Code:

---

low = 5;
high = 95;
function incr () {
        if (_root.m._alpha<=low) {
                do {
                        _root.m._alpha +=5;
                } while (_root.m._alpha ==high);
        }
}

---

Frame # 2 :

Code:

---

_root.m._alpha -=5;
                        incr();

---

Frame 3 :

Code:

---

gotoAndPlay (2);

---

..... Now the obvious problem , that am facing is ( this is only half of the code ... just the increasing aprt ...I have not yet written the decr() function ) ... as I run this , the frame #3 runs perfect and I think the incr() function is ok too . BUt what is creating the problem is in frame 3 there is a gotoAndPlay(2) which is overruling the incr() function as soon as it is tryuing tio get executed and hence the alpha increment is never shown :( The decrease that is being forced is overriding the implenmentation of the incr() function .
How can i skip this ? :confused:

bump ..... anyone :( ??

Hi,

maybe you could try this...

on the movie clip as a clipevent set the initial alpha value to be the same as your high value;

onClipEvent(load) {
this._alpha = _root.high;
}

then frame 1 (of main time line)

direction = -1; // we start by decreasing the alpha value
high = 95;
alpha = high;
low = 5;

frame 2...

alpha += 5 * direction;
_root.m._alpha = alpha;

if (alpha == high || alpha == low) {
direction *= -1; // if it reaches maximum or minimum alpha change direction
}

frame 3...

gotoAndPlay(2);

Try this prototype and clip code. I just tested it and it works fine. I think it may be what you want.

Movieclip.prototype.fade=function(){
var maxAlpha=100;
var minAlpha=0;
if(_alpha<maxAlpha&&up==0){
_alpha+=5;
}else{
up=1;
}
if(up){
if(_alpha>minAlpha){
_alpha-=5;
}else{
up=0;
_alpha+=5;
}
}
}

onClipEvent(load){
up=0;
}


onClipEvent(enterFrame){
fade();
}
[Edited by dzlpwr on 05-23-2002 at 10:32 PM]

Okay this might be even easier than that.

set a variable someone, a, to be 1 (1 or 0);

if (a==1){
mymovie._alpha -=5;
if(myovie._alpha == 5){
a=0;}
}

if (a==0){
mymovie._alpha +=5;
if(myovie._alpha == 100){
a=1;}
}

so, it just alternates between the functions depending on whether or not a is true or false, or 1 or 0, whatever.

lemme know if that works

thanx guys .. will post back , if it works :)

okay, ignore the myovie, and replace with mymovie...cheese and rice