Hello it’s me again still struggling with a project. I decided to try to use setInterval for myanimation, which is just a mouse trail. However, I’m trying to get teh mouse trail to be a dynamic mask. In my previous swf this was achieved by using a holder mc with the animation inside and then using this as the mask. But this time I just canpt seem to hit on the right way to get it to work. The code I am using for the mouse trail is:
var i:Number = 0;
var myInt:Number;
var t:MovieClip;
_root.createEmptyMovieClip('holder',_root.getNextHighestDepth());
bg.cacheAsBitmap = true;
holder.cacheAsBitmap = true;
function init() {
t=attachMovie('star', 'star'+i, i, {_x:_xmouse, _y:_ymouse});
t._x = _xmouse;
t._y = _ymouse;
t._xscale = t._yscale=10;
t.onEnterFrame = function() {
bg.setMask(holder);
this._x += (-5+Math.random()*6);
this._y += (-5+Math.random()*6);
this._rotation += (-2+Math.random()*3);
this._xscale = this._yscale += 2;
this._alpha -= 5;
};
if (i<20) {
i++;
} else {
i = 0;
}
}
myInt = setInterval(init, 70);
You’ll see that I haven’t got the holder doing anything except existing as an empty mc.
The code above works great for a simple mouse trail with a bit of drift.
The problem is when I try to ‘put it in’ a holder everything breaks down. I’ve studied the code I used last time but am getting nowhere after 24 hours. So here I am again throwing myself at the mercy of the forums.
I tried:
function init() {
holder.t=attachMovie('star', 'star'+i, i, {_x:_xmouse, _y:_ymouse});
holder.t._x = _xmouse;
holder.t._y = _ymouse;
holder.t._xscale = holder.t._yscale=10;
holder.t.onEnterFrame = function() {
bg.setMask(holder);
this._x += (-5+Math.random()*6);
this._y += (-5+Math.random()*6);
this._rotation += (-2+Math.random()*3);
this._xscale = this._yscale += 2;
this._alpha -= 5;
};
if (i<20) {
i++;
} else {
i = 0;
}
}
in the function, but now the trail doesn’t resize and the mask still doesn’t work. 
Any ideas, oh great ones?
