alice-teacher Question about object position.

[Don Slater]

In the Scene Setup section, click on the "more controls" button. This section will expand, and you will see a button to "drop dummy" at marker.

For each of the fish:
	- select a fish
	- click on the drop dummy for selected object button
	- you will see the dummy object appear in a Dummy's folder in the object tree
	- find the newly created dummy object and rename it
	- set the vehicle of the dummy to its corresponding fish (so that it will move as the fish moves)

When it comes time for the fish to scatter for each dummy marker, in the program code
	- reset the vehicle of the dummy to the world

When the fish are ready to return to formation, for each fish
	- have the fish set its point of view to its respective dummy
	- reset the vehicle of the dummy back to its corresponding fish

Important point: You have to set up the dummy markers when setting up the scene. Alice does not allow you to create any objects, from the gallery, or dummy markers, while a program is running.

If you have been working with arrays (not lists), this becomes an interesting problem using parallel arrays of fish and dummys.

I hope this helps.

All the best,
Don Slater


On Apr 16, 2013, at 2:58 PM, Steve Hollis <steve_hollis at brentwoodacademy.com> wrote:

> Hello all,
> 
> This is my first year teaching Alice.  It's been great so far.  My 12th grade students have a final project assignment.  They are animating a children's book using the various techniques we have learned all year.  One of my students has run into a problem that I am not sure how to solve.
> 
> He is animating the book Swimmy.  He has a lot of fish objects arranged in the shape of a larger fish.  As part of the story, he wants the fish to disperse and then come back into the shape of the larger fish.
> 
> Is there a way to capture the position of objects in a scene and bookmark it similar to the way you can set up scenes?  I didn't know if a pose capture would work since each piece of the larger fish is an individual object.
> 
> I hope that question made sense.
> 
> Thank you in advance.
> 
> Steve Hollis
> Instructor of Science, English, and Computer
> Brentwood Academy
> 219 Granny White Pike
> Brentwood, TN 37027
> 615-373-0611 x 182
> www.brentwoodacademy.com
> 
> 
> <unknown.png>
> 
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