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meleu / RetroArch-problematic-cheevos

A place to put the savestates of games with cheevos problems when running in RetroArch and no problems in official emulators.
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SameBoy core issue? - Lucky Luke GBC #39

Closed kdecks closed 5 years ago

kdecks commented 5 years ago

Using the Sameboy Core for Lucky Luke (GBC) - RA checksum: 7cf3670a8f345344e4789e41503d7da6

Lucky Luke page: http://retroachievements.org/Game/6203

The following achievements trigger on entering the second stage (stagecoach) on hard and in this order: http://retroachievements.org/Achievement/31388 - Get a perfect on a bonus http://retroachievements.org/Achievement/31374 - Finish Level 6 http://retroachievements.org/Achievement/31373 - Finish Level 5 on hard http://retroachievements.org/Achievement/31372 - Finish Level 5 http://retroachievements.org/Achievement/31371 - Finish Level 4 on hard http://retroachievements.org/Achievement/31370 - Finish Level 4 http://retroachievements.org/Achievement/31378 - Finish Level 8 http://retroachievements.org/Achievement/31377 - Finish Level 7 on hard http://retroachievements.org/Achievement/31376 - Finish Level 7 http://retroachievements.org/Achievement/31375 - Finish Level 6 on hard http://retroachievements.org/Achievement/31381 - Finish Level 9 on hard http://retroachievements.org/Achievement/31380 - Finish Level 9 http://retroachievements.org/Achievement/31379 - Finish Level 8 on hard http://retroachievements.org/Achievement/31387 - Finish Level 12 on hard and beat the game http://retroachievements.org/Achievement/31386 - Finish Level 12 and beat the game http://retroachievements.org/Achievement/31383 - Finish Level 10 on hard http://retroachievements.org/Achievement/31384 - Finish Level 11 http://retroachievements.org/Achievement/31382 - Finish Level 10 http://retroachievements.org/Achievement/31385 - Finish Level 11 on hard

I've recreated the issue. image

You can recreate the issue using the SameBoy core and loading the password: Dog, Prospector, Horse, Luke, Horse

Most of these achievements are checking a single, stable value which is the stage id (0x00dfc3). Or the stage id and a difficulty check. The conditions have 0 hits required. I've watched this address in Retroarch using an external memory viewer and it acts as expected. When in the memory the stage id is 0xa SameBoy reads it as at least the following values: 0x19, 0x1e, 0x23, 0x27, 0x31, 0x36, 0x3a (stage id for finishing stages 6 though 12). Interestingly enough does not trigger for stages 1 through 4. (0x00dfc3 == 0x16 and the end of stage 4.)

Logic tells me that this is an issue with the SameBoy core, but perhaps I've missed something. Maybe rcheevos will resolve and make this issue irreverent.

kdecks commented 5 years ago

I tested RAVba with no issue.

kdecks commented 5 years ago

Gambette core doesn't work at all. These achievements are simple so it's something besides the achievement code.

rzumer commented 5 years ago

Gambatte side fixed in https://github.com/libretro/gambatte-libretro/pull/124.

rzumer commented 5 years ago

SameBoy side fixed in https://github.com/LIJI32/SameBoy/pull/158.

meleu commented 5 years ago

closing this as fixed. @kdecks feel free to reopen if the problem still happens with you when using uptodate versions of the mentioned cores.