Imported 3d Models Collider

Unity Engine
1

Hey there,

I am pretty new to Unity and all I can say yet is that its a great engine and a lot of fun!

Today I imported my first own 3d object into unity. Its a table with 4 feet. Now I have a question about colliders. As I imported the table it had no colliders. Now temorary I added a box collider arround the whole table. Is it possible to directly add collider “objects” within the 3d program I built it with (in my example 3ds Max)? That would be the best for me :slight_smile:

If thats not possible, how do I use the Mesh Collider? I tried to pull the object onto the mesh field, but it won’t work and still says “None (Mesh)” within the Mesh collider.

So maybe someone can tell me whats the best way to add colliders to imported objects.

Many thanks in advance :slight_smile:
MacStanley

2

Check out the import settings for your table, you will find a “Generate colliders” checkbox which will automatically update the model to have a mesh collider property. Further more you can do this manually by adding the mesh collider property to the object then assigning a mesh to the (Mesh) field. You can use this to make a separate low poly mesh for the model.

More on this here:
http://docs.unity3d.com/Documentation/Components/FBXImporter-Model.html
http://docs.unity3d.com/Documentation/Components/class-MeshCollider.html

3

But thats exactly what I tried to explain. It does not work that way. First of all if I choose the option to generate colliders it wont automaticly generate. And if I add one manually it does not work and I have no chance to add the object as mesh to “Mesh”. It still says “None (Mesh)” and I cant drag it onto this field. Maybe something is wrong with my object. You can find it here for download:

http://www.youngmusic.de/download/table_object_fbx.zip

4

I just imported your model as a test, and yes, it does generate the mesh colliders (plural). The reason for this is you made each feature of the table a separate mesh. So, each mesh will get it’s own collider component. The colliders will compound for the overarching gameobject, and work like you’d expect them to however.