Rotate GameObject to collision normal

Unity Engine
1

I’m programming some kind of 2D-platformer and when a projectile (GameObject) hits an barrier I want to initialize and rotate a ParticleSystem to the Colission-Normal. This ParticleSystem simulates some kind of shrapnels and dust that should fly in the opposite direction of the projectile.

This is my code so far:

    private void ApplyHitEffect(Health.HealthChangedDetails details)
    {
        if (HitDamageEffect == null)
            return;

        GameObject obj = (GameObject)Instantiate(HitDamageEffect.gameObject, transform.position, Quaternion.identity);

        Vector3? impactVector = details.GetImpactVector();
        if (impactVector != null)
        {
            Debug.Log("rotate particle system");
            //obj.transform.LookAt(impactVector.Value);
            obj.transform.rotation *= Quaternion.FromToRotation(obj.transform.position, impactVector.Value);
        }

        Destroy(obj, HitDamageEffect.DestroyTime);
    }

The code rotates the Particlesystem but not in the opposite direction of the projectile.
Any help on how to accomplish that is really appreciated.

2

Negate the impactVector.Value

3

Sometimes it is so easy :).

Thanks a lot.

1 Like
4

No prob glad I could help!