unity on collision enter
using UnityEngine;
using System.Collections;public class ExampleClass : MonoBehaviour
{
AudioSource audioSource; void Start()
{
audioSource = GetComponent<AudioSource>();
} void OnCollisionEnter(Collision collision)
{
foreach (ContactPoint contact in collision.contacts)
{
Debug.DrawRay(contact.point, contact.normal, Color.white);
}
if (collision.relativeVelocity.magnitude > 2)
audioSource.Play();
}
}