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phetsims / mean-share-and-balance

"Mean: Share and Balance" is an educational simulation in HTML5, by PhET Interactive Simulations.
GNU General Public License v3.0
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Fractional apples can get incorrectly positioned #179

Closed jbphet closed 4 months ago

jbphet commented 4 months ago

I was able to get into the following situation through this set of steps:

  1. Load the sim and go into the Fair Share screen
  2. Add four more people (for a total of six)
  3. Click the buttons in the notepad in the following sequence, allowing any animation to finish before going to the next one:
    • Collect, Share, Collect, Sync, Share

image

jbphet commented 4 months ago

This is now fixed. There was a problem with the algorithm that was being used to sort the apples on the plates based on their stacking positions. The same sequence of interactions now produces this:

image

I also fuzz tested and did some manual regression testing. Hopefully I've covered enough. Closing.