var target : Transform;
var edgeBorder = 0.1;
var horizontalSpeed = 360.0;
var verticalSpeed = 120.0;
var minVertical = 20.0;
var maxVertical = 85.0;

private var x = 0.0;
private var y = 0.0;
private var distance = 0.0;

function Start()
{
	x = transform.eulerAngles.y;
    y = transform.eulerAngles.x;
    distance = (transform.position - target.position).magnitude;
}

function LateUpdate()
{
	var dt = Time.deltaTime;
	x -= Input.GetAxis("Horizontal") * horizontalSpeed * dt;
	y += Input.GetAxis("Vertical") * verticalSpeed * dt;
	
	y = ClampAngle(y, minVertical, maxVertical);
	 
	var rotation = Quaternion.Euler(y, x, 0);
	var position = rotation * Vector3(0.0, 0.0, -distance) + target.position;
	
	transform.rotation = rotation;
	transform.position = position;
}

static function ClampAngle (angle : float, min : float, max : float) {
	if (angle < -360)
		angle += 360;
	if (angle > 360)
		angle -= 360;
	return Mathf.Clamp (angle, min, max);
}