unity - detect gameobjects that is already in contact

Question

Imagine I have 2 gameobjects, red plate and apple. When game start(this is crucial), apple already on red plate(2 gameobjects already in contact). so if I move red plate, the apple is "parented" to red plate and follow the transform.

How can I do that in Unity3D? I look at the code Trigger and Collision, both of them need to at least a stage that 1 moving gameobject to collide the other, which I don't have that.

Any idea how to deal with this?

Answer 1

I found the solution: Bounds.Intersect

As in:

var bounds1 = gameObject1.renderer.bounds;

var bounds2 = gameObject2.renderer.bounds;



if (bounds1.Intersects(bounds2))

{

    // do something

}

So with this, my problem solved.