Unity键盘WASD实现物体移动

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
 
public class MoveCam : MonoBehaviour
{
 private Vector3 m_camRot;
 private Transform m_camTransform;//摄像机Transform
 private Transform m_transform;//摄像机父物体Transform
 public 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();
 }
 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);
 }
}