How to make a camera follow the mouse up and down?

I'm making a game in which a 1st and 3rd person camera that is parented to a tank follow the mouse around in the x and z axis. The script is the basic script included with unity: This camera smoothes out rotation around the y-axis and height. Horizontal Distance to the target is always fixed.

There are many different ways to smooth the rotation but doing it this way gives you a lot of control over how the camera behaves.

For every of those smoothed values we calculate the wanted value and the current value. Then we smooth it using the Lerp function. Then we apply the smoothed values to the transform's position. */

// The target we are following var target : Transform; // The distance in the x-z plane to the target var distance = 10.0; // the height we want the camera to be above the target var height = 5.0; // How much we var heightDamping = 2.0; var rotationDamping = 3.0;

// Place the script in the Camera-Control group in the component menu @script AddComponentMenu("Camera-Control/Smooth Follow")

function LateUpdate () { // Early out if we don't have a target if (!target) return;

 // Calculate the current rotation angles
 wantedRotationAngle = target.eulerAngles.y;
 wantedHeight = target.position.y + height;
     
 currentRotationAngle = transform.eulerAngles.y;
 currentHeight = transform.position.y;
 
 // Damp the rotation around the y-axis
 currentRotationAngle = Mathf.LerpAngle (currentRotationAngle, wantedRotationAngle, rotationDamping * Time.deltaTime);

 // Damp the height
 currentHeight = Mathf.Lerp (currentHeight, wantedHeight, heightDamping * Time.deltaTime);

 // Convert the angle into a rotation
 currentRotation = Quaternion.Euler (0, currentRotationAngle, 0);
 
 // Set the position of the camera on the x-z plane to:
 // distance meters behind the target
 transform.position = target.position;
 transform.position -= currentRotation * Vector3.forward * distance;

 // Set the height of the camera
 transform.position.y = currentHeight;
 
 // Always look at the target
 transform.LookAt (target);

} A bullet with the script:

var colision = 0;
var bulletspeed = 400;
var bullet : Transform;
function Update () {
    if(Collision){
    if(colision == 3){
    }
    else{
    colision +=1;
    rigidbody.velocity = transform.TransformDirection(Vector3(0,0,bulletspeed));
    }
    }
    else{
    rigidbody.velocity = transform.TransformDirection(Vector3(0,0,bulletspeed));
    }
    }

Is fired in the direction the camera is looking at. I was wondering what I would need to add in to make the camera also move up and down in the y axis so I could set the elevation of a shot. Cheers