Why aren't the member variables in the following object maintaining their state?

The following two AS files contain statically available public methods. In Mouse.as, the trace statements correctly print the contents of both calls to getLocation(), which returns a Point in space (X,Y).

However, when passing the value from Mouse.as into HitTest.as, target.getLocation() always prints (0,0). Wha开发者_如何学编程t happens to the instance of GameObject when its passed into the second class that causes it to lose its value?

In GameObject

public function getLocation():Point2
{
    return m_location;
}

In Block (extends GameObject)

if (Mouse.isPressing(this))
{
    reset();
}

In Mouse

public static function isPressing(target:GameObject):Boolean
{
    trace("T1: " + target.getLocation());
    trace("M1: " + location);
    return isDown() && HitTest.containsPoint(target, Mouse.getLocation());
}

In HitTest

public static function containsPoint(target:GameObject, location:Point2):Boolean
{
    trace("T2: " + target.getLocation());
    trace("M2: " + location);
    return target.getLocation().GridX == location.GridX && target.getLocation().GridY == location.GridY;
}