按住右键旋转观看，放开后恢复默认位置（转）

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using UnityEngine;
using System.Collections;public class HackAndSlashCamera : MonoBehaviour {
public Transform target;
public float walkDistance;
public float&nbsp***nDisatance;
public float height;
public float xSpeed = 250.0f;
public float ySpeed = 120.0f;
public float heightDamping = 2.0f;
public float rotationDamping = 3.0f;private Transform _myTransform;
private float _x;
private float _y;
private bool _camButtonDown = false;
void Awake() {
_myTransform = transform;
}// Use this for initialization
void Start () {
if(target == null)
Debug.LogWarning(“We do not have a target for the camera”);
else {
CameraSetUp();
}
}void Update() {
if(Input.GetMouseButtonDown(1)) { //Use the Input Manager to make this user selectable button
_camButtonDown = ***e;
}
if(Input.GetMouseButtonUp(1)) {
_camButtonDown = false;
}
}//this function is called after all of the Update functions are done.
void LateUpdate() {
// _myTransform.position = new Vector3(target.position.x,target.position.y + height,target.position.z – walkDistance);
// _myTransform.LookAt(target);
if(target != null) {
if(_camButtonDown) { //Use the Input Manager to make this user selectable button
_x += Input.GetAxis(“Mouse X”) * xSpeed * 0.02f;
_y -= Input.GetAxis(“Mouse Y”) * ySpeed * 0.02f;// y = ClampAngle(y, yMinLimit, yMaxLimit);Quaternion rotation = Quaternion.Euler(_y, _x, 0);Vector3 position = rotation * new Vector3(0.0f, 0.0f, -walkDistance) + target.position;_myTransform.rotation = rotation;
_myTransform.position = position;
}
else{
// _myTransform.position = new Vector3(target.position.x, target.position.y + height, target.position.z – walkDistance);
// _myTransform.LookAt(target);
_x = 0; //reset the x value
_y = 0; //reset the y value//Calculate the current ratation angles
float wantedRotationAngle = target.eulerAngles.y;
float wantedHeight = target.position.y + height;float currentRotationAngle = _myTransform.eulerAngles.y;
float currentHeight = _myTransform.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
Quaternion currentRotation = Quaternion.Euler(0, currentRotationAngle, 0);//Set the position of the camera on the x-z plane to:
//distance meters behind the target
_myTransform.position = target.position;
_myTransform.position -= currentRotation * Vector3.forward * walkDistance;//Set the height of the camera
_myTransform.position = new Vector3(_myTransform.position.x, currentHeight, _myTransform.position.z);//Always look at the target
_myTransform.LookAt(target);
}
}
}//set the camera to a default position behind the player and facing them
public void CameraSetUp() {
_myTransform.position = new Vector3(target.position.x,target.position.y + height,target.position.z – walkDistance);
_myTransform.LookAt(target);
}
}

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