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# Thread: math formula

1. I got this code from a friend that makes objects move away from your mouse like a backwards magnet, then moves back into place after the mouse is gone. I want to upgrade the code to scale the object down the further away it moves out of place, then return to full size when it moves back into place. I've tried a few diffrent things, nothing worked, I am pritty much confused how to do it at this point. If anybody could help me I would really appreciate it. Thanks in advance.

code------------------
homeX = this._x
homeY = this._y
magnet = 500
}

//variables = sub formula that update every new frame
onClipEvent(enterFrame){
x0 = this._x
y0 = this._y
x1 = _root._xmouse
y1 = _root._ymouse
distancex = x1-x0
distancey = y1-y0
distance = Math.sqrt((distancex * distancex) + (distancey * distancey))
powerx = this._x - (distancex / distance) * magnet / distance
powery = this._y - (distancey / distance) * magnet / distance
forcex = (forcex + (homex - x0) / 2) / 1.66
forcey = (forcey + (homey - y0) / 2) / 1.66

//formula
this._x = powerx + forcex
this._y = powery + forcey
}
------------------------

This is a link to see what the code is doing now.
http://www.geocities.com/beatlemier

Thanks again for any help.

2. try this:

myheight=this._height;
mywidth=this._width;

at the end of the script add:

sizex=this._x-homex;
sizey=this._y-homey;

size=1-(0.5*(Math.sqrt((sizex*sizex)+(sizey*sizey))/anyvariable));
this._height=myheight*size;
this._width=mywidth*size;

anyvariable is a number that will be more than the heighest distance possible from the mouse. eg. if your movie is 500x400, choose something like 500. Anyway, play around with the number and choose the best one for you.

this way the smallest size it can get to is 0.5 of its original. You can make it smaller by making the 0.5 0.7 etc...

hope that helps.

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