# Why does OnCollisionStay returns multiple contact points in such a strange way?

 0 Hi there, updated this Question, because of something I noticed and to clarify some more: I've got a rigidbody with a spherecollider and need a way to keep track of all the points it is currently in contact with. I thought OnCollisionStay would be the way to do this, but somehow it gives unexpected results. My test cases are the following: The SphereCollider is sitting on a stairway, in case A composed of BoxColliders, in case B a single mesh collider/imported 3dmodel CASE A CASE B Than I'm printing the contact.points with this script: `````` function OnCollisionStay (collision : Collision) { grounded=true; print(collision.contacts.Length); for (var contact : ContactPoint in collision.contacts) { print(contact.otherCollider + " " + contact.point); } collisions = collision; } `````` As you already may have noticed in the pictures the console output is very, very strange: In Case A it says it has 2 contact.points, but then prints 2 times the coordinates of the first contact and than 2 times the coordinates of the second, instead of printing both coordinates at once. CASE B is even worse it says it has 2 to 8 contacts and about half of the printed coordinates belongs to the first and half to the second contact point. I considered that this might have to do with the number of vertices of the stairway mesh compared to the two box colliders, but I dont see why this should be the way oncollisionstay is supposed to work. Maybe I'm wrong but shouldn't be the output more like this: Number of Contacts Coordinate 1.Contact Coordinate 2.Contact ... Number of Contacts Coordinate 1.Contact Coordinate 2.Contact ... If anybody knows the reason for this, or has any suggestions for a work arround, so that I can have an output like shown above, I would be very glad. I hope I described the problem well enough, otherwise feel free to ask and I will clarify. As alway any help is appreciated. Thanks! more ▼ asked Mar 11 '11 at 08:53 PM Christian 7 11 ● 1 ● 1 ● 4 Could you also print out the normal of the contact? Mar 12 '11 at 05:51 PM Statement ♦♦ add new comment (comments are locked) 10|3000 characters needed characters left ▼ Viewable by all users

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asked: Mar 11 '11 at 08:53 PM

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Last Updated: Mar 12 '11 at 02:46 PM