private void Deselect() //when the lat object that was selected is NOT hit by the raycast change color back to red
    {
        //audioSource = lastObject.GetComponent<AudioSource>();

        isSelected = false;
        if (changeMaterial != null)
        {
            changeMaterial.ChangeTo("red");
        }
        audioSource.Stop();
        isPlayingCord = false;
        //myFloat.isFloatingUp = false;
        //myFloat.isFloatingDown = true;
    }
    private void Select(GameObject hitObject)       //when hit by the raycast change color to blue and play a cord
    {
        isSelected = true;

        changeMaterial = hitObject.GetComponent <ChangeMaterial>();
        audioSource    = hitObject.GetComponent <AudioSource>();
        changeMaterial.ChangeTo("blue");

        lastObject             = hitObject;
        myFloat.isFloatingUp   = true;
        myFloat.isFloatingDown = false;

        Instantiate(ringPrefab, new Vector3(hitObject.transform.localPosition.x, hitObject.transform.localPosition.y, hitObject.transform.localPosition.z), Quaternion.identity);

        isPlayingCord = true;
        if (isPlayingCord)
        {
            if (!audioSource.isPlaying)
            {
                audioSource.Play();
            }
        }
    }