Collision2D.rigidbody

# [Collision2D](https://docs.unity3d.com/cn/2019.4/ScriptReference/Collision2D.html).rigidbody

public [Rigidbody2D](https://docs.unity3d.com/cn/2019.4/ScriptReference/Rigidbody2D.html) **rigidbody** ;

## 描述

与 [otherRigidbody](https://docs.unity3d.com/cn/2019.4/ScriptReference/Collision2D-otherRigidbody.html) 的碰撞中涉及的传入 [Rigidbody2D](https://docs.unity3d.com/cn/2019.4/ScriptReference/Rigidbody2D.html)。

如果未将 [Collision2D.collider](https://docs.unity3d.com/cn/2019.4/ScriptReference/Collision2D-collider.html) 附加到 [Rigidbody2D](https://docs.unity3d.com/cn/2019.4/ScriptReference/Rigidbody2D.html)，这可能是 null。

另请参阅：[Collider2D](https://docs.unity3d.com/cn/2019.4/ScriptReference/Collider2D.html) 和 [Rigidbody2D](https://docs.unity3d.com/cn/2019.4/ScriptReference/Rigidbody2D.html)。

```
using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour
{
    void OnCollisionEnter2D(Collision2D collision2D)
    {
        //If the object we collided with was a Runner and not a Catcher.
        if (collision2D.transform.name == "Runner")
        {
            StartCoroutine(StuckInTheMud(collision2D));
        }
    }

//Freeze the object in position for 5 seconds
    public IEnumerator StuckInTheMud(Collision2D victim)
    {
        victim.rigidbody.isKinematic = true;
        yield return new WaitForSeconds(5f);
        victim.rigidbody.isKinematic = false;
    }
}
```