using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class CameraFollow : MonoBehaviour
{
    public float sMouse = 2f;
    public float sBoard = 1.2f;
    public float sWheel = 10f;

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