Motion Designer

[Paul Orwig]

I need help in a scene I'm trying to put together. I'm not sure if this is the right area, if not will someone tell me so I can move it. My problem is this, I have a building that is on a ground plane. I'm trying to get this building (a shed) 8ft by 8ft by 8ft and 6ft tall; to be slid off of a clif that is 500ft down. I'm trying to figure out how to make the shed interact with the wall of the cliff and bust apart. I also need the boards to hit the bottom of the ground, but everytime I try this the shed goes through the polygon cliff. I have not been able to get the pieces of the shed to bust up yet. I'm new at this and I'm trying to get familiar with this kind of animation. I've attached my scene to this question. How is this is set up is as far as I have gone.

Paul

[Paul Orwig]

Sorry, I didn't include the cliff object. Here is the scene file, Cliff object, shed object.

[Dodgy]

If you're using motion designer you'll have to activate your cliffs as well to make them a collision object. Then the shed will crash into them. If you're using LW 8 you should be using Hardfx for this sort of job.

[Paul Orwig]

I have LW7.5C. Could you please explain to me how to set up each piece to do it.
I know I'm asking a lot, but like I said I'm new.