Unity 全景漫游过程中使用AWSD控制镜头移动，EQ控制镜头升降，鼠标右键控制镜头旋转。

镜头的旋转设置

首先为镜头设置一个父类，通过父类的Y值设置镜头左右的旋转，在通过镜头本身的X值控制镜头上下的旋转。

代码：

   if (Input.GetMouseButton(1))
        {
            float mouseX = Input.GetAxis("Mouse X") * sleeps;
            float mouseY = Input.GetAxis("Mouse Y") * sleeps;

            Quaternion rotationX = transform.localRotation * Quaternion.Euler(0, mouseX, 0);
            Quaternion rotationY = HeadObj.transform.localRotation * Quaternion.Euler(-mouseY, 0, 0);
            transform.localRotation = Quaternion.Lerp(transform.localRotation, rotationX, 1);
            HeadObj.transform.localRotation = Quaternion.Lerp(HeadObj.transform.localRotation, rotationY, 1);
        }

镜头的移动：

镜头移动我们主要通过transform.Translate来设置，当点击W的时候，镜头朝向摄像机正前方移动。点击S的时候朝向镜头的后方移动，而不是单纯的水平移动。AD为左右水平的移动，EQ为上下的垂直移动。

        float moveH = Input.GetAxis("Horizontal");
        float moveV = Input.GetAxis("Vertical");

        float x = moveH * Time.deltaTime * sleeps;
        float z = moveV * Time.deltaTime * sleeps;

     
           
        Vector3  v1 = transform.GetChild(0).forward;
        transform.Translate(v1 * z , Space.World);
        Vector3 v2 = transform.right;
        transform.Translate(v2 * x, Space.World);

       

当然我们肯定不想镜头在场景中无限制的移动。要给镜头一个上下左右前后的一个移动范围。接下来上完整的代码。

完整代码：

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

public class QuanJingCamera : MonoBehaviour
{

    public float sleeps;

    public Transform HeadObj;

    [Header("限制镜头左右的范围")]
    public float Min_x;
    public float Max_x;
    public float Min_z;
    public float Max_z;
    [Header("限制镜头上下的范围")]
    public float Min_y;
    public float Max_y;
    void Start()
    {

    }

    void Update()
    {

        float moveH = Input.GetAxis("Horizontal");
        float moveV = Input.GetAxis("Vertical");

        float x = moveH * Time.deltaTime * sleeps;
        float z = moveV * Time.deltaTime * sleeps;

        //x = Mathf.Clamp(x, Min_x, Max_x);
        //z = Mathf.Clamp(z, Min_z, Max_z);

        if (transform.position.x <= Max_x
             && transform.position.x >= Min_x
             && transform.position.z <= Max_z
             && transform.position.z >= Min_z


             )
        {
           
            Vector3  v1 = transform.GetChild(0).forward;
            transform.Translate(v1 * z , Space.World);
            Vector3 v2 = transform.right;
            transform.Translate(v2 * x, Space.World);

            //transform.Translate(Vector3.left * -z);
            // transform.Translate(x, 0, z);
        }
       
        if (transform.position.x >= Max_x)
        {
            transform.position = new Vector3(Max_x, transform.position.y, transform.position.z);
        }
        if (transform.position.x <= Min_x)
        {
            transform.position = new Vector3(Min_x, transform.position.y, transform.position.z);
        }
        if (transform.position.z <= Min_z)
        {
            transform.position = new Vector3(transform.position.x, transform.position.y, Min_z);
        }
        if (transform.position.z >= Max_z)
        {
            transform.position = new Vector3(transform.position.x, transform.position.y, Max_z);
        }





        if (transform.position.y < Max_y)
        // transform.position += new Vector3(0, Time.deltaTime * sleeps, 0);
        {
            if (Input.GetKey(KeyCode.E))
                transform.Translate(0, Time.deltaTime * sleeps, 0, Space.World);
        }
        else
            transform.position = new Vector3(transform.position.x, Max_y, transform.position.z);



        if (transform.position.y > Min_y)
        {
            if (Input.GetKey(KeyCode.Q))
                transform.Translate(0, Time.deltaTime * -sleeps, 0);
        }
        // transform.position += new Vector3(0, Time.deltaTime * -sleeps, 0);
        else
            transform.position = new Vector3(transform.position.x, Min_y, transform.position.z);


        //  transform.Translate(transform.position * moveH);


        if (Input.GetMouseButton(1))
        {


            float mouseX = Input.GetAxis("Mouse X") * sleeps;
            float mouseY = Input.GetAxis("Mouse Y") * sleeps;


            Quaternion rotationX = transform.localRotation * Quaternion.Euler(0, mouseX, 0);
            Quaternion rotationY = HeadObj.transform.localRotation * Quaternion.Euler(-mouseY, 0, 0);
            transform.localRotation = Quaternion.Lerp(transform.localRotation, rotationX, 1);
            HeadObj.transform.localRotation = Quaternion.Lerp(HeadObj.transform.localRotation, rotationY, 1);
        }
    }
}