Collider2D.attachedRigidbody

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public Rigidbody2D attachedRigidbody;

Description

The Rigidbody2D attached to the Collider2D.

Collider2D are automatically attached to a Rigidbody2D on the same GameObject as the Collider2D or if none is present then on a Rigidbody2D on the nearest parent GameObject. The property will be null if no Rigidbody2D is attached. In this case, the Collider2D is attached to a hidden body known as the ground body that lives at the world origin as is set to be RigidbodyType2D.Static. No reference to this hidden body is available however.

See Also: Rigidbody2D, RigidbodyType2D.

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour
{
    public Vector2 force = Vector2.up;

    void Start()
    {
        // Apply a force to the rigidbody attached to the collider.
        GetComponent<Collider2D>().attachedRigidbody.AddForce(force);
    }
}