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Bill,
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<div class="">How I like to do this is to put up an object (made transparent if you want) that works like a fence. You need one for each side of the region you’re trying to contain. So for a rectangle, you need four fences. Make sure they are all facing outward
from the region.
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<div class="">Then, whenever you were going to move the object, use an if block to make sure it is “behind” the fence, using the isBehind built-in function. Only move the object if it is behind the fence.</div>
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<div class="">James<br class="">
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—<br class="">
James Vanderhyde<br class="">
Associate Professor and Department Chair</div>
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Computer Science<br class="">
Saint Xavier University<br class="">
3700 W. 103rd St.<br class="">
Chicago, IL 60655<br class="">
773-298-3454</div>
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<div class="">On Feb 28, 2021, at 10:06 PM, Barnum, William via alice-teachers <<a href="mailto:alice-teachers@lists.andrew.cmu.edu" class="">alice-teachers@lists.andrew.cmu.edu</a>> wrote:</div>
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<div dir="ltr" class="">Hey everyone,
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<div class="">I'm looking to restrict a character to within some coordinate boundaries within an Alice 3 program.</div>
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<div class="">Since there isn't a way to pull coordinate data from an object while running the program, I'm trying to find a workaround, but everything I've come up with feels like a kludge.</div>
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<div class="">Does anyone have any reasonably elegant way to do this?</div>
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<div class="">Thanks,</div>
<div class="">Bill</div>
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