search

phetsims / masses-and-springs

"Masses and Springs" is an educational simulation in HTML5, by PhET Interactive Simulations.
GNU General Public License v3.0
4 stars 5 forks source link

Legends of Learning: spring unpauses in a different location #324

Closed KatieWoe closed 6 years ago

KatieWoe commented 6 years ago

Devices Dell and HP laptop OS Win 10 and Win 7 Browser Chrome and Firefox Problem Description For phetsims/QA/issues/180 When pausing the sim with LoL when the spring is moving, the spring will unpause in a new location. This causes a "jump." Steps to Reproduce

  1. Enter the sim into the Legends of Learning harness
  2. Go to any of the screens
  3. If damping is non-zero on the screen, turn it down to zero so that this effect can be better seen.
  4. Start the harness.
  5. Attach a mass and pull it all the way down so you have a large amplitude of motion
  6. Press pause on the harness (not the sim). Attempt to do this when it is at the top of the screen.
  7. Unpause the harness

Screenshots jump

KatieWoe commented 6 years ago

Update: It seems that opening the "message logs" when paused further changes the state of the sim. Screenshot: jumpmenu

phet-steele commented 6 years ago

@KatieWoe your first comment is a trade-off that was discussed in https://github.com/phetsims/pendulum-lab/issues/187, and as long as the physics of the simulation remains intact, is fine.

However your second comment is concerning, and may warrant its own issue (in joist) for maybe @jonathanolson and/or @samreid to look into.

Denz1994 commented 6 years ago

@KatieWoe your first comment is a trade-off that was discussed in phetsims/pendulum-lab#187, and as long as the physics of the simulation remains intact, is fine.

Based on @phet-steele's comment above and since an issue has been logged in joist for the second point made. Is there anything left to do with this issue? It seems like any further work should be handled in https://github.com/phetsims/joist/issues/515.