OnCollision unity code example

Example 1: unity oncollisionenter

void OnCollisionEnter(Collision col)
    {
		//This method will run when your game object
      	//collides with something

      	Debug.Log("Collided");
    }

Example 2: oncollisionenter unity

void OnCollisionEnter(Collision collision) {
       if (collision.gameObject.tag == "Door")
       {
               // DoorScript is the name you gave to the script on the door
               DoorScript script = collision.gameObject.GetComponent<DoorScript>();
               // OpenDoor is a method in your door object's script
               script.OpenDoor();
       }
}

Example 3: OnCollision unity

using UnityEngine;public class Example : MonoBehaviour
{
    void OnCollisionStay(Collision collisionInfo)
    {
        // Debug-draw all contact points and normals
        foreach (ContactPoint contact in collisionInfo.contacts)
        {
            Debug.DrawRay(contact.point, contact.normal * 10, Color.white);
        }
    }
}