Parenting after X time with collision, I dont get it!

Questions & Answers
1

Hey,

I need help with parenting an Object to an other after a collision occurred for a specified amount of time generally spoken. I will try to explain it more detailed, but first I want to let you know that I´am trying this for a few days now and I don´t get it working properly.

We have Object A, this is a moving Prefab and we have Object B it has a collider and a script that should wait for collision with Object A, and if the collision is happening for the amount of X time Object B should become the parent of Object A. If A and B are colliding for a lower time than X no parenting should happen.

577-problem_visual.png

-Yeah, sounds simple but not for me I really don´t get it working, I have not much programming knowledge and I think I´am missing a basic programming concept.
I wrote a lot of diffrent scripts the last days but none of them worked properly, and I know most of you do not respond to Questions that have no scripts attached but I want to understand(!) not guess what is right so please help.

Thanks in advance for the time you invest,

GameGuy

2

This is a simple example that should do what you need. You could use OnTriggerEnter and OnTriggerExit instead of a constantly running checks in OnCollisionStay but this is more informative than actual implementation. This pseudo-code is not performance-friendly, but perhaps it’ll give you hints.

public float collisionRequired = 2.5f;
private float collisionCurrent = 0.0f;

function OnCollisionStay(Collider coll)
{
    collisionCurrent += Time.deltaTime;

    if(collisionCurrent > collisionRequired)
        if(coll.transform.parent != transform)
            coll.transform.parent = transform;
}