教程Roll-a-ball tutorialMoving the Player 解读

来源：互联网发布：服务器安全防护软件编辑：程序博客网时间：2024/05/17 07:59

using UnityEngine;using System.Collections;public class PlayerController : MonoBehaviour {    public float speed;    private Rigidbody rb;    void Start ()    {        rb = GetComponent<Rigidbody>();    }    void FixedUpdate ()    {        float moveHorizontal = Input.GetAxis ("Horizontal");        float moveVertical = Input.GetAxis ("Vertical");        Vector3 movement = new Vector3 (moveHorizontal, 0.0f, moveVertical);        rb.AddForce (movement * speed);    }}

分析：

void Start ()    {        rb = GetComponent<Rigidbody>();    }

官方的例子从开始就隐藏着规范，为什么要这么写，一般的程序员会写成下面这样

    void Start ()    {          }

    void FixedUpdate ()    {        float moveHorizontal = Input.GetAxis ("Horizontal");        float moveVertical = Input.GetAxis ("Vertical");        Vector3 movement = new Vector3 (moveHorizontal, 0.0f, moveVertical);        GetComponent<Rigidbody>().AddForce (movement * speed);    }

不对，为什么不对：点击打开链接

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