Applying physics to movieclip created with createEmptyMovieClip...

Hey all,

Im new to the forums and actionscript so be generous...

As the title suggests i want to apply physics (gravity mainly) to a line drawn with the curser using the createEmptyMovieClip method.

Below is the code in the main frame (sorry its a bit long), what I'm trying to do is make something like crayon physics (i know it will be difficult).

So far i can draw lines and make certain objects ( a ball for example) be affected by gravity, but when I try to make the drawn lines be affected by gravity it stuffs up.

The first line drawn is produced in the wrong position, (it should be at mouse point but isn't) and you can't draw any subsequent lines. This problem doesnt exist when i remove the gravity, any help is much appreciated.

Basically what i want is that each line that is drawn can have actions assigned to it... (so i can add gravity and unique properties for different line types)

Hope that makes sense and you can help .

//force settings
//Drawing tools
_global.general = 0x0000FF;
//blue
_global.rubber = 0x9400D3;
//purule
_global.spring = 0x32CD32;
//green
_global.rope = 0x8B4513;
//brown
_global.explosion = 0xFFFF00;
//yellow
_global.explosion2 = 0xFFA500;
//orange
//tool setings
var thickness = 2;
_global.tool = general;
var alpha = 100;
//Scene colours
var land = 0x000000;
//black
var prop = 0x1D1D1D;
//charcoal      (non-gravity affected prop)
var gprop = 0x696969;
//dim gray      (gravity affected prop)
var backg = 0xD3D3D3;
//light gray
//Active objects
var main = 0xFF0000;
//red
var orange = 0xFF4500;
//orange
var a = 1;
var b = gen;
var menu = 0;
var d = 0;
LineA = new Array();

this.onLoad = function() {

for (a in LineA) {
LineA[a].power = 0.3;
LineA[a].yspeed = 0;
LineA[a].xspeed = 0;
LineA[a].friction = 0.95;
LineA[a].gravity = 0.1;
LineA[a].thrust = 0.75;
}
};

this.onEnterFrame = function() {
d++
for (a in LineA) {
LineA[a].xspeed *= friction;
LineA[a].yspeed += gravity;
LineA[a]._y += yspeed;
LineA[a]._x += xspeed;
}
};


onMouseDown = function () {
createEmptyMovieClip("Line", 1);
Line.lineStyle(thickness, tool, alpha);

// The function onMouseDown is activated when you click the mouse 
button.
Line.moveTo(_xmouse, _ymouse);
// This moves the line to the starting point, which will be directly 
where you
// clicked._xmouse and _ymouse are the x and y position of the mouse.
onMouseMove = function () { Line.lineTo(_xmouse, _ymouse);};
// This creates the line to the point where ever your mouse is dragged.
};
onMouseUp = function () {
// The function onMouseUp is activated when you release the mouse 
button.
onMouseMove = null;
// This function turns off the onMouseMove() function so that the 
line will
// not be drawn again until the user clicks the mouse button again.
a++;
// d = a
// a = b+a
duplicateMovieClip(LineA, "LineA"+a, a);
// a = d
c = a;
};