Xindaris
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File: Press Test.hold (42.3 KB)
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License: Public Domain

This is in version 5.2.0.562. (EDIT: Also present in 5.2.0.617)

In the attached hold, in 1E, is a room I've been building involving an updated version of the "Webbing" custom element that makes use of the "Activates Pressure Plates" behavior (they have the "seep" appearance, which normally wouldn't hold down pressure plates). It involves a lot of "copies" of that character type and several on-off plates connected to several different buttons, all of which I suspect has something to do with the issue; you can see in the entrance where I tried to build a room to more succinctly reproduce the problem with no success. The room also involves a relatively "5.1 compatible" version of the pulse cannons custom element, but I don't...think those are involved in the problem.

Basically: If you try to solve the room, and undo after some time in, just sometimes, the plates being held down by the webbing will unpress themselves, and stay unpressed if you then continue walking around through the room. Undoing a little more can retoggle them again. This is a weirdly inconsistent behavior, and only seems to happen after playing the room for a while.

EDIT: Actually, I was able to eventually reproduce the same problem in the entrance. It really seems to require going through several turns, and then undoing.

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[Last edited by Xindaris at 02-17-2025 01:58 AM]

hyperme
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Does this happen for any other script behaviours? If one has playback issues, it may also happen for others.

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Xindaris
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I had a go at testing and..uh-oh.

Check the new version uploaded to the first post now. In 1W, if you wait long enough and then start undoing, the mud baby characters all just stop activating the tokens like they're supposed to. Both while undoing and if time is moving normally! I'm editing the thread title to reflect this...

Also, I noticed that in the entrance, this misbehavior starts around turn 420. The same seems to be true in 1W. Some number close to that appears to be the "magic" one for this bug, maybe.

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[Last edited by Xindaris at 02-17-2025 01:58 AM]

Dragon Fogel
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I hit an undo-related bug in RPG some versions ago which involved a token not activating on undo/reset. Here's the thread for that bug, just in case there are any useful similarities that might help to solve this one:

https://forum.caravelgames.com/viewtopic.php?TopicID=41889

hyperme
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That this require a lot of turns to pass before it happened was a big clue here. Turns out behaviours aren't getting copied over when a game snapshot is made, which causes the problem.

Now I simply have to understand how snapshotting works so I can fix this. yay.

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mrimer
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PR (thanks, hyperme!)

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NoahT
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Not experiencing any of the undo strangeness described here in 5.2.0.738.

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