Scripting problem

I couldn't see your pictures , but I think I can help.

Make a new script, then in the script write :

 function OnCollisionEnter(theCollision : Collision)
 {
     Debug.Log("Hit the " + theCollision.gameObject.name);
 }

Make a Floor , name it "Floor".

Make a Cube.

Click on the cube.

Look in the Inspector window (very important) ->

There are these "Components" :

• Transform

• Cube (mesh filter)

• Box collider

• Mesh renderer

you should also give the cube a "Rigidbody" . If no Rigidbody is in the Inspector , add one like this :

Look at at the top of the Unity window ,

( File - Edit - Assets - GameObject - Component - Terrain - Window - Help )

click on Component , then click on Physics > Rigidbody . Now you should see Rigidbody Component in Cube Inspector (mass, drag, gravity, ....)

don't forget to drag-and-drop the script onto the cube also.

now Click on the cube , look in the inspector window , you should have :

• Transform

• Cube (mesh filter)

• Box collider

• Mesh renderer

• Rigidbody

• your script (Script)

now click play. Now the cube should fall down (gravity in rigidbody), and the message should appear "Hit the Floor" .

You need a rigidbody component for physics and collisions to work. Here is some information on Rigidbody :

http://unity3d.com/support/documentation/Components/class-Rigidbody.html

http://unity3d.com/support/documentation/ScriptReference/Rigidbody.html

Hope this helps =]