Unity 2D 核心中无法将类型“UnityEngine.Rigidbody2D”隐式转换为“UnityEngine.Rigidbody”错误

Question

所以我是 Unity 的新手，我正在遵循教程。 https://www.youtube.com/watch?v=34fgsJ2-WzM 但是当我编写代码时出现此错误。如果这是一个愚蠢的问题，我很抱歉。提前谢谢。

代码：

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

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

public class PlayerCtrl : MonoBehaviour
{

    public float movSpeed;
    float speedX, speedY;
    Rigidbody rb;

// Start is called before the first frame update
    void Start()
    {
        rb = GetComponent<Rigidbody2D>();


    }

// Update is called once per frame
    void Update()
    {
        speedX = Input.GetAxisRaw("Horizontal") * movSpeed;
        speedY = Input.GetAxisRaw("Vertical") * movSpeed;
        rb.velocity = new Vector2(speedX, speedY);
    }
}

我尝试调试并重写代码，问题仍然存在。

Answer 1

您的

rb

变量是刚体的 3D 版本

Rigidbody rb;

改为

Rigidbody2D

Rigidbody2D rb;