Unity还原Scenc视图下面控制相机功能

公开变量

public float sensitivityMouse = 2f;
        //按键控制相机移动的速度值
        public float sensitivetyKeyBoard = 0.1f;
        //鼠标拉近缩远的速度值
        public float sensitivetyMouseWheel = 10f;
        private float x = 0.0f;
        private float y = 0.0f;
        //角度定义有效角度范围的开始
        float yMinLimit = -20;
        //角度定义有效角度范围的结束
        float yMaxLimit = 80;
        #region 公有方法
        void Start()
        {
            var angles = transform.eulerAngles;
            x = angles.y;
            y = angles.x;
        }
        static float ClampAngle(float angle, float min, float max)
        {
            if (angle < -360)
            {
                angle += 360;
            }
            if (angle > 360)
            {
                angle -= 360;
            }
            return Mathf.Clamp(angle, min, max);
        }

下面控制时间写在Update（）就可以了

 //键盘按钮←/a和→/d实现视角水平移动，键盘按钮↑/w和↓/s实现视角水平旋转
            if (Input.GetAxis("Horizontal") != 0)
            {
                transform.Translate(Input.GetAxis("Horizontal") * sensitivetyKeyBoard, 0, 0);
            }
            if (Input.GetAxis("Vertical") != 0)
            {
                transform.Translate(0,0, Input.GetAxis("Vertical") * sensitivetyKeyBoard);
            }    

 //按着鼠标右键实现视角转动
            if (Input.GetMouseButton(1))
            {
                x += Input.GetAxis("Mouse X") * 250 * 0.02f;
                y -= Input.GetAxis("Mouse Y") * 120 * 0.02f;
                y = ClampAngle(y, yMinLimit, yMaxLimit);
                var rotation = Quaternion.Euler(y, x, 0);
                transform.rotation = rotation;
            }
            //按鼠标中键实现拖动上下左右视角
            if (Input.GetMouseButton(2))
            {
                Vector3 p0 = Camera.main.transform.position;
                Vector3 p01 = p0 - Camera.main.transform.right * Input.GetAxisRaw("Mouse X") * 1 * Time.timeScale;
                Vector3 p03 = p01 - Camera.main.transform.up * Input.GetAxisRaw("Mouse Y") * 1 * Time.timeScale;
                Camera.main.transform.position = p03;
            }

 //滚轮实现镜头缩进和拉远
            if (Input.GetAxis("Mouse ScrollWheel") != 0)
            {
                CameraControllerManager.Instance.MainCamera.fieldOfView = CameraControllerManager.Instance.MainCamera.fieldOfView - Input.GetAxis("Mouse ScrollWheel") * sensitivetyMouseWheel;
            }