Game Random Freeze when selecting Deck and some mission.

[ivolivari213]

I am experiencing an issue where the game freezes when I select panels or start a mission. This problem does not occur when I emulate the same version using Retroarch melonDS.

KHDays_FM:

https://github.com/vitor251093/KHDays_FM/assets/96542650/452d2ed7-a304-47ee-9747-772c6a94b55a

Retroarch:

https://github.com/vitor251093/KHDays_FM/assets/96542650/bcac3bef-04c4-4f09-b45a-0ce3699b14f6

[vitor251093]

Are you able to reproduce this bug with this build?

https://github.com/vitor251093/KHDays_FM/actions/runs/9274179028

[ivolivari213]

Still Have this issue after update the build

[vitor251093]

Are you using JIT Recompiler with the Melon Mix?

[ivolivari213]

I'm not using JIT Recompiler, I am able to complete missions without crash now. But apparently the freeze comes to Panels -> Deck 2.

https://github.com/vitor251093/KHDays_FM/assets/96542650/f67b618b-2696-46b5-9ca8-355313b7f4a4

[vitor251093]

I still can't reproduce this issue. Could you please share a save, or save state, that can reproduce the issue?

[ivolivari213]

Sure , here the save data

game.zip

[vitor251093]

Managed to reproduce the bug with the save. Now I need to figure out why that's happening

[vitor251093]

I've discovered something curious. If I disable the emulator error (it is a manual error, per say) that is causing the freezing, this is the result:

I'm unfamiliar with that label though ("Missing some panels")

[vitor251093]

@ivolivari213 does that label also appears with Retroarch's melonDS?

[Ssheph95]

I would like to add to this that I am experiencing the same issue still on 0.3.0.

Melon Days.zip

Here's my save file as well. This seems isolated specifically to attempting to save a deck in slot 2, as saving to slot 1 and slot 3 both work correctly.

[vitor251093]

@Ssheph95 does the bug also not happen to you with RetroArch's melonDS, or other melonDS builds?

If you use the same save, that is

[Ssheph95]

I haven't used MelonDS prior to playing Days MeonMix, so wasn't able to check on another MelonDS build, but the bug does not occur when using that save (converted for compatibility of course) in DeSmuME. I'll fire up a new save and quick play to the point that panels are unlocked as I do notice we're both near the same block of missions around day 194.

I hadn't tried saving to slot 2 prior, as I had no reason to keep multiple decks. I suspect that much like myself, the "30 kills with limit break" side quest from Xigbar during these days inspired the need for multiple decks. but I want to check if the issue is persistent prior or something specific to perhaps this part of the game, or perhaps the player's rank.

[ivolivari213]

Hi, this is my retroarch MelonDS

It wont freeze.

[vitor251093]

Seems to be connected to those DataAbort calls

https://github.com/melonDS-emu/melonDS/blob/a72b79a55ad2d61811af11b1b911f6af863f66c2/src/CP15.cpp#L870

I will need to analyze this further, to be sure if that's a recent melonDS bug or a Melon Mix bug, and to avoid creating new bugs trying to fix this one

[Ssheph95]

I did do some footwork. This also occurs in melon core, so it's not something specific to days MelonMix

I also found you can workaround this. If you load the save file in an emulator that allows you to see deck 2, overwrite deck 2, save, and then load the new save file in melon, it allows deck 2 to be selectable again.

This issue seems to be the result of save corruption from some source or another. It appears somewhere through the game (no idea where) bad data got written to where deck 2 should be, causing the abort when trying to view said data.

It seems the "missing panels" dialogue normally occurs if you somehow saved a deck then proceeded to sell portions of what was in it. The game seems to default to this when the data in the deck doesn't result in a "valid configuration" when compared to your existing available panels. Melon takes this a step further and just aborts if the data is "unreadable".