Collider2D.OnCollisionEnter2D(Collision2D)

Parameters

Description

Sent when an incoming collider makes contact with this object's collider (2D physics only).

Further information about the collision is reported in the Collision 2D parameter passed during the call.

Notes: Collision events will be sent to disabled MonoBehaviours, to allow enabling Behaviours in response to collisions.

Additional resources: Collision2D class, OnCollisionExit2D, OnCollisionStay2D.

using UnityEngine; 
public class Example : MonoBehaviour 
{ 
    void OnCollisionEnter2D(Collision2D collision) 
    { 
        if (collision.gameObject.CompareTag("Enemy")) 
        { 
            collision.gameObject.SendMessage("ApplyDamage", 10); 
        } 
    } 
}