一个根据鼠标滑动旋转摄像机的脚本

var target : Transform;
var centre:Transform;
var xSpeed = 250.0;
var ySpeed = 120.0;
var yMinLimit = -20;
var yMaxLimit = 80;
var initDis = 20;
var minDis = 3.0;
var maxDis = 50.0;
var wheelSpeed = 5;
static var x = 0.0;
static var y = 0.0;
static var finalx=0.0;
static var finaly=0.0;
static var distance:float;
private var position;
private var rotation:Quaternion;
public var enable:boolean;
private var reset:boolean=false;

function Awake()
{
x = 0;
y = 35;
}
function Start () {

transform.rotation = Quaternion.Euler(y, x, 0);
transform.position =Quaternion.Euler(y, x, 0) * Vector3(0.0, 0.0, -initDis) + target.position;
if (rigidbody) rigidbody.freezeRotation = true;
}
function Update () {

if(enable==true)
{
if(Input.GetMouseButton(2)){
target.localPosition.x-=Input.GetAxis("Mouse X");
target.localPosition.y+=Input.GetAxis("Mouse Y");
}
if(Input.GetKeyDown(KeyCode.F)){
reset=true;
}
if(reset==true){
target.position.x=Mathf.Lerp(target.position.x,centre.position.x,Time.deltaTime*5);
target.position.y=Mathf.Lerp(target.position.y,centre.position.y,Time.deltaTime*5);
if(Mathf.Abs(target.position.x-centre.position.x)<0.01f)
{
reset=false;
}
}
}


if (target) {
distance = Vector3.Distance(target.position,transform.position);
if(Input.GetMouseButton(0)){
x += Input.GetAxis("Mouse X") * xSpeed * 0.02;
y -= Input.GetAxis("Mouse Y") * ySpeed * 0.02;
y = ClampAngle(y, yMinLimit, yMaxLimit);
}
finalx=Mathf.Lerp(finalx,x,Time.deltaTime*2);
finaly=Mathf.Lerp(finaly,y,Time.deltaTime*2);

distance-= Input.GetAxis("Mouse ScrollWheel")*wheelSpeed;
distance = Mathf.Clamp(distance,minDis,maxDis);
rotation = Quaternion.Euler(finaly, finalx, 0);
Debug.Log((rotation * Vector3(0.0, 0.0, -distance)).ToString());
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);
}