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phetsims / projectile-motion

"Projectile Motion" is an educational simulation in HTML5, by PhET Interactive Simulations.
GNU General Public License v3.0
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Projectiles appear to be lagging at apex for one frame #283

Closed matthew-blackman closed 2 years ago

matthew-blackman commented 2 years ago

Projectiles are spending 1 extra frame at the apex point. This only became noticeable when there were multiple projectiles and with the trajectories made invisible (cosmetic change only).

Video of behavior (step frame-by-frame to see apex lag): https://drive.google.com/file/d/1PSJgUoWhTdU4l83xDmwpZphNmS-z0yVO/view?usp=sharing

matthew-blackman commented 2 years ago

The behavior also occurs in the live version of the sim.

Screenshot of issue: https://drive.google.com/file/d/1mwa_MX2vvUeJ3VAcDRAbRdBGndWeWAh1/view?usp=sharing Video: https://drive.google.com/file/d/1zm6pPQPQgYUlphiLLPlCnpFVakGOfzEF/view?usp=sharing