Get hit direction from one gameObject hitting another

Questions & Answers
1

If I fire a gun (bullet) I use a ray cast (Ray.direction) to get the direction the ray was hitting the rigid body to add force.

impactTarget = hit.rigidbody;
impact = ray.direction * 12;

I then add force to the rigid body thats been hit with

impactTarget.AddForce(impact,ForceMode.VelocityChange);

And all works well with the bullet because it’s instant, if I use the Ray.direction for the RPG by the time it’s reached the target the ray cast could be looking somewhere else.

But how if I shoot a RPG (gameObject with small box collider) and hit the same rigid body do I get the direction of the RPG hitting from.

ImpactTarget = contact.gameObject.rigidbody;
impact = contact.??

I’m using for the collision detection

function OnCollisionEnter(collision : Collision){

	var contact = collision.contacts[0];

Thanks.

2

The “direction” between any two objects is simply the difference between their transform positions.

var Direction : Vector3 = contact.transform.position - transform.position;

You may then want to normalise this variable - it’s unclear from your question exactly what you want it for.

3

You can simply find object(game object with small box collider) by Gameobject.findbytag and
the difference between the found object vector.position and impacttarget.position will give you direction .