1首先在场景中建立一个Capsule，将主摄像机拖到其物体下。
2.将脚本挂在Capsule物体下，WASD 控制移动方向，空格延Y轴向上移动，F延Y轴向下移动
using System.Collections;using System.Collections.Generic;using UnityEngine;public class MoveCam : MonoBehaviour{private Vector3 m_camRot;private Transform m_camTransform;//摄像机Transformprivate Transform m_transform;//摄像机父物体Transformpublic float m_movSpeed=10;//移动系数public float m_rotateSpeed=1;//旋转系数private void Start(){m_camTransform = Camera.main.transform;m_transform = GetComponent<Transform>();}private void Update(){Control();}void Control(){if (Input.GetMouseButton(0)){//获取鼠标移动距离float rh = Input.GetAxis("Mouse X");float rv = Input.GetAxis("Mouse Y");// 旋转摄像机m_camRot.x -= rv * m_rotateSpeed;m_camRot.y += rh*m_rotateSpeed;}m_camTransform.eulerAngles = m_camRot;// 使主角的面向方向与摄像机一致Vector3 camrot = m_camTransform.eulerAngles;camrot.x = 0; camrot.z = 0;m_transform.eulerAngles = camrot;// 定义3个值控制移动float xm = 0, ym = 0, zm = 0;//按键盘W向上移动if (Input.GetKey(KeyCode.W)){zm += m_movSpeed * Time.deltaTime;}else if (Input.GetKey(KeyCode.S))//按键盘S向下移动{zm -= m_movSpeed * Time.deltaTime;}if (Input.GetKey(KeyCode.A))//按键盘A向左移动{xm -= m_movSpeed * Time.deltaTime;}else if (Input.GetKey(KeyCode.D))//按键盘D向右移动{xm += m_movSpeed * Time.deltaTime;}if (Input.GetKey(KeyCode.Space) && m_transform.position.y <= 3){ym+=m_movSpeed * Time.deltaTime;}if (Input.GetKey(KeyCode.F) && m_transform.position.y >= 1){ym -= m_movSpeed * Time.deltaTime;}m_transform.Translate(new Vector3(xm,ym,zm),Space.Self);}}
