var xv:Number = 0;
var acc:Number = 2.3;
var fric:Number = 0.75;
var stopspeed:Number = 0.9;
var grav:Number = 0;
var tcg:Boolean = false;
onEnterFrame = function () {
    if (Key.isDown(Key.LEFT) and Key.isDown(Key.RIGHT)) {
        if (xv>-0.01 and xv<0.01) {
            xv = 0;
        }
        xv *= stopspeed;
    } else if (Key.isDown(Key.RIGHT)) {
        xv += acc;
    } else if (Key.isDown(Key.LEFT)) {
        xv -= acc;
    } else {
        if (xv>-0.01 and xv<0.01) {
            xv = 0;
        }
        xv *= stopspeed;
        //The following code stops the gravity from going past "number"
    }
    if (grav>19) {
        grav = 20;
    }
    xv *= fric;
    player._x += xv;
    //text used for de-bugging
    gravtext.text = grav;
    acctext.text = xv;
    // if not touching ground, _y gravity ensues.
    if (!tcG) {
        grav++;
        player._y += grav;
    } else {
        grav = 0;
    }
};