I think your post refers to MSPhysics. You should ask the question under the index "Plugins" and MSPhysics.

Export tested with a simple example - Bug Splat after export of 2 DAE-files ... The script is in the table. Have no idea. I am a beginner in programming... Export tests in the SKP or image data format works well in this way. Sorry ...
The better way is perhaps an enhanced Sketchy Physics Replay Collada export function. I recommend Anton S. for this.

.dae direct export test

Here is another version which allows you to shatter same slab multiple times.

slabshatters_v2.skp

For animations it's best to use the Animation class instead of using sleep() and forcing a screen refresh.
http://www.sketchup.com/intl/en/developer/docs/ourdoc/animation

Could it work to change gravity?

@mptak said:

In general Ruby (or Python as well) it seems that you use subclasses but this seems problematic.

Yes, though then it's normally in a server environment where you have more control over the environment where your code is run. In SketchUp the user controls the environment and the developer is the guest - flipping the roles.

AS can I know, SkechyPhisics dosen´t work on SU2013 Pro.
I have a license and I check it, but any time that I try to run the plugin Sketchup2013 crashes, one after another time.

Well, to be more splicit, I am habing problems with several prugins and SU2013 that I haven´t with SU8.

I read that Trimble (or anyonelse) are cooking a new versión.

Was a very sad experience to feel how Trimble forget us, after a nice payment for a Pro license of 2013.

This is the behabiour that we can expect from SU2013/Trimble?

I hope to be wrong

Excellent! 😎

Not me. SketchyPhysics 3.2 tends to crash on SU2013, so I use it in SU8. Meanwhile, I do wait for an update and the bug fixes.

Yeah, I see no big deal here myself. TinkerCAD had pretty much decided to go in another direction way before the buy out so it looks like a good deal for both parties.
AutoDesk has really charged ahead on new mobile and web technology. What prices they are charging seem fair for what you get. Most so far have been free or next to free.

http://highrise.nfb.ca/onemillionthtower/1mt_main_story_anim.php

Not sure if they used sketchup but if not they could have....

There isn't any sketchup stuff there but their Computer Science stuff is very visually based. As an engineer who really cut his adult teeth on Ruby I would have loved this interface when learning ruby. You make the change to the code and immediately see its effect.