Attach Mesh Collider via Script at Runtime

Hey folks!

My goal is to add Mesh Collider to a random Object (The user can select it from his pc) and all child objects which have a mesh renderer attached.

How can I accomplish this?

I am thankful for any ideas.

 

Check out the AddComponent method in the Scripting docs. That's what you're going to want to use.

However, be warned that using a mesh collider is pretty expensive, so use sparingly. I've found that using a series of primitive colliders works well.

 

Thanks for your answer. I have checked the AddComponent method before but my problem is that I always have to attach a specific gameobject.
But when I am building my game I don't have this specific gameobject because the user should load the model in runtime. Also I cant attach the mesh collider to a parent. And I dont know how many mesh renderers the model has.

 

It sounds like you're trying to focus on learning too much at once. I'd back up and try to tackle the simpler stuff first and come back to this issue when you've got a solid understanding of parenting and components and how they all can interact.

 

Then the model the user loads *is* your specific GameObject. You can use GetComponentsInChildren<MeshRenderer>() to get all of the child mesh renderers.

 

Okay thanks for your answers, I think I am now closer to my goal.

One Question:

With

Code (CSharp):

1. myGameobject.AddComponent<MeshCollider>();

I can add the Meshcolliders to my Parent gameobject. But I want to add the MeshColliders to the children, not to the parent. Or the best Option is to add the mesh colliders to al children which contain a mesh renderer.
(Maybe some child Objects have also children and I also want to add a mesh collider to them)

How ca I do this?

Thanks for your answers!

 

I mentioned this in my previous post already
http://docs.unity3d.com/ScriptReference/GameObject.GetComponentsInChildren.html

 

Thank you for all you answers!

I got it now.

 

Is it possible to attach collider at all location in .obj where material is changed

 

myGameobject.AddComponent<MeshCollider>();

how can i add this with CONVEX is ON ?

thank you!!!!!!!!

 

myGameobject.AddComponent<MeshCollider>().convex = true;

 

MeshCollider mc = myGameobject.AddComponent<MeshCollider>();
mc.convex = true;
mc.this = that; etc....

 

I have a question that is somewhat similar to this, I added a mesh collider to my gameobject using the AddComponent which is mentioned above and as I inspect it in the hierarchy the mesh collider was added but in the mesh section it is empty. the child of that gameobject tho contains the mesh. what i want to do is assign the child of the gameobject in the mesh field. how can i do that in script

 

Put the AddComponent code on the child object instead?