using UnityEngine;
using System.Collections;

public class CameraMove : MonoBehaviour
{
    public float sensitivityMouse = 2f;
    public float sensitivetyKeyBoard = 0.1f;
    public float sensitivetyMouseWheel = 10f;

    void Update()
    {
        //滚轮实现镜头缩进和拉远
        if (Input.GetAxis("Mouse ScrollWheel") != 0)
        {
            GetComponent<Camera>().fieldOfView = GetComponent<Camera>().fieldOfView - (Input.GetAxis("Mouse ScrollWheel") * sensitivetyMouseWheel);
        }
        //按着鼠标右键实现视角转动
        if (Input.GetMouseButton(1))
        {
            transform.Rotate(-Input.GetAxis("Mouse Y") * sensitivityMouse, Input.GetAxis("Mouse X") * sensitivityMouse, 0);
        }

        //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 * 0.5f, 0, 0);
        }
        if (Input.GetAxis("Vertical") != 0)
        {
            transform.Translate(0, 0, Input.GetAxis("Vertical") * sensitivetyKeyBoard * 0.5f);
        }
    }

}