方法一：
摄像机：
private Transform player;
public float speed = 2;
void Start () {
player = GameObject.FindGameObjectWithTag(Tags.player).transform;
}
void Update () {
//添加的Vector视情况而定
Vector3 targetPos = player.position + new Vector3(0,2.42f,-2.42f);
transform.position = Vector3.Lerp(transform.position,targetPos,speed*Time.deltaTime);
//一直注视着角色
Quaternion targetRotation= Quaternion.LookRotation(player.position-transform.position);
//弧度（角度）
transform.rotation = Quaternion.Slerp(transform.rotation,targetRotation,speed*Time.deltaTime);
}
人物：
private CharacterController cc;
public float speed = 3;
void Awake() { cc = this.GetComponent();}
void Update () {
float h = Input.GetAxis("Horizontal");
float v = Input.GetAxis("Vertical");
//以虚拟杆的值为优先
if (Joystick.h!=0||Joystick.v!=0)
{
h = Joystick.h;v = Joystick.v;
}
if (h!=0||v!=0){
Vector3 targetDir = new Vector3(h, 0, v);
transform.LookAt(targetDir+transform.position);
cc.SimpleMove(targetDir * speed);
}
}
方法二：
用NGUI制作虚拟杆：
private bool isPress=false;
private Transform button;
//移动边界
public float boundary=73;
public static float v =0;
public static float h = 0;
//判断是否有按键动作
void OnPress(bool isPress) {
this. isPress = isPress;
if (!isPress)
{
button.localPosition = Vector2.zero;
}
h = 0; v = 0;
}
void Awake() {
button = transform.Find("Button");
}
void Update () {
if (isPress)
{
//UICamera.lastEventPosition获取的是像数值
//取中心点位置
Vector2 touchPos = UICamera.lastEventPosition;
touchPos -= new Vector2(91,91);
//把触摸位置设置给button,并固定移动范围
float distance = Vector2.Distance(Vector2.zero,touchPos);
if (distance > boundary)
{
touchPos = touchPos.normalized * boundary;
button.localPosition = touchPos;
}
else { button.localPosition = touchPos; }
v = touchPos.y/ boundary;
h = touchPos.x/ boundary;
}
}
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