alice-teacher Alice 3 objects in alice 2.2

[Don Slater]

Alice 3.1 models are significantly restructured. This restructuring includes a consistent internal skeletal and joint structure for each super class in the gallery (Biped, Quadruped, Flyer, Swimmer, Prop).  The consistent internal structure allows for a class hierarchy needed for more faithful implementation of inheritance (an object-oriented concept) than does Alice 2. (Note that introductory students do not need this feature but more advanced student do.) 
 
The design of Alice 3 gallery models is joints-based (rather than subparts-based as used in Alice 2). Creating animations using components of an object now involves manipulation of the joints of an object instead of the sub-parts of an object. This may seem to be a subtle change, but it allows the use of a soft-skin for the models, creating more realistic animations when a component of a model is animated. For example, an object kicking its leg outward will no longer move outside its clothing, exposing a bare leg.  
 
This redesign of the gallery means that worlds created in Alice2.x, and worlds created in Alice 3.0 Beta , can not be imported into Alice 3.1. The models are fundamentally different, and there is no conversion utility currently planned that would support such a conversion.
 
Part of this is also aesthetic. The Alice 3 environment models are richer, with much higher polygon counts, and "smooth-skinning", much more complex to become Alice 2 models in the Alice 2.x Virtual Machine.

Later,
Don Slater

On Oct 16, 2012, at 10:20 AM, "Milbury, Michael" <Michael.Milbury at culver.org> wrote:

> I feel like the answer is no, but is it possible to create objects in Alice 3 and use them in 2.2?
>  
> Thanks,
>  
> Mike
>  
> From: alice-teachers-bounces+michael.milbury=culver.org at lists.andrew.cmu.edu [mailto:alice-teachers-bounces+michael.milbury=culver.org at lists.andrew.cmu.edu] On Behalf Of Susan Rivas
> Sent: Wednesday, October 10, 2012 10:27 AM
> To: Alice
> Subject: alice-teacher Student Friendly Guide
>  
> Yes, please send one to me as well. Thank you!!!
>  
> -Susan
>  
> --
> ---------
> Susan Rivas
> Shoreline Middle School
> 855 17th Avenue
> Santa Cruz, CA 95062
> (831)475-6565 ext. 214
>  
> http://www.shoreline.santacruz.k12.ca.us/departments/computer/clab.html
>  
> http://www.shoreline.santacruz.k12.ca.us/departments/spanish/spanish.html
>  
>  
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