void PickUp()
{
RaycastHit hit;
if (Physics.Raycast(cam.transform.position, cam.transform.forward, out hit, grabDistance))
{
Grabbable item = hit.transform.GetComponent <Grabbable>();
if (item != null)
{
item.ForceRelease();
grabbedItem = item;
grabbedItem.Grab(this);
}
}
}