alice-teacher Question about move toward

Donald Slater djslater107 at mac.com
Thu Feb 16 07:48:55 EST 2017


James,
After looking into this in more detail, we have determined that it is a bug…

Thank you for bringing it to our attention…

All the best,
Don Slater

> On Feb 13, 2017, at 11:43 AM, Vanderhyde, James via alice-teachers <alice-teachers at lists.andrew.cmu.edu <mailto:alice-teachers at lists.andrew.cmu.edu>> wrote:
> 
> Mike, you have given a good example of when to use Move Toward, and it works fine. My only point was that it seems like these two blocks should work the same, but they don’t:
> 
>  Do together
>  	  chicken move to bunny
>   chicken turn left 1 revolution
>   Do together
>  	  chicken move ( chicken distance to bunny ) toward target = bunny
>   chicken turn left 1 revolution
> 
> This is why I’m calling it a bug. I don’t think move toward is implemented correctly for all use cases, and I have yet to see a reason that it has to be implemented as a relative motion.
> 
> James
>> James Vanderhyde
> Assistant Professor, Computer Science
> Program Director, Master of Applied Computer Science
> Saint Xavier University
> 3700 W. 103rd St.
> Chicago, IL 60655
> 773-298-3454
> 
> On Feb 12, 2017, at 5:20 PM, Michael L Owen via alice-teachers <alice-teachers at lists.andrew.cmu.edu <mailto:alice-teachers at lists.andrew.cmu.edu>> wrote:
> 
> True- The turn was just for visual correctness, but any number of non-directional objects in the form of a list could follow a dragged object forever.
> 
> 
> From: alice-teachers <alice-teachers-bounces+mrgrog=outlook.com at lists.andrew.cmu.edu <mailto:alice-teachers-bounces+mrgrog=outlook.com at lists.andrew.cmu.edu>> on behalf of Vanderhyde, James via alice-teachers <alice-teachers at lists.andrew.cmu.edu <mailto:alice-teachers at lists.andrew.cmu.edu>>
> Sent: Saturday, February 11, 2017 10:03 PM
> To: Alice educators
> Subject: Re: alice-teacher Question about move toward
>  
> Mike, because you used “turn to face” you can just use “move forward.” No need for “move toward” at all.
> 
> James
>> James Vanderhyde
> Assistant Professor, Computer Science
> Program Director, Master of Applied Computer Science
> Saint Xavier University
> 3700 W. 103rd St.
> Chicago, IL 60655
> 773-298-3454
> 
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