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jpd002 / Play-

Play! - PlayStation2 Emulator
http://purei.org
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iPhone version of emulator does not enter game play for Metal Gear Solid games #844

Closed derekR14 closed 4 years ago

derekR14 commented 4 years ago

For different Metal Gear Solid games tested on iPhone, game will load intro screens and game menus, but goes to an indefinite black screen when trying to move to game play. I've seen other issues noting the game will play for them on other systems (Windows, MacOS and/or Android). It seems there is an issue with the iOS version of the emulator for Metal Gear games. Can you confirm if this is something that can be fixed?

The following games were tested: SLUS-20144 Metal Gear Solid 2: Sons of Liberty SLUS-20915 Metal Gear Solid 3: Snake Eater SLUS-21359 Metal Gear Solid 3: Subsistence

All 3 games were tested on both iPhone 7 and iPhone 8, both running iOS 13.3.

All versions of tests were using commit 988607a. https://github.com/jpd002/Play-/commit/988607ae5f70a5bdfd0e571e61d68f83b7cc5e31

Dragon20C commented 4 years ago

I dont think the focus for the developer(s) at the moment is fixing bugs at the moment is just trying to get the best performance as possiable then bug fixes but dont expect that any time soon

derekR14 commented 4 years ago

Understood, just wanted to share the issue. Fixing this may not be a main focus of the dev team, but I figured I’d let the team know in case the fix isn’t too much work.

jpd002 commented 4 years ago

Seems this was due to the write protection being disabled on iOS. I turned it back on here: https://github.com/jpd002/Play-/tree/ios_ram_write_exception. I remember I turned it off for a reason, but it seems to work well on my iOS 13.3 device.

Take note that MGS2 and MGS3 still don't run properly on all platforms. This branch just brings iOS on par with the rest.

Lemme know if that worked for you.

derekR14 commented 4 years ago

Awesome thanks for the response. Ill try it out and will let you know

derekR14 commented 4 years ago

I don't use GitHub much and am having a hard time getting that branches contents into my phone. I usually download the latest .IPA from the purei site and use Xcode to push it to my device. I don't see an .xcodeproj file in the branch. Can you (or anyone else) give some advice how to get this branch to my device. Thanks in advance.

Zer0xFF commented 4 years ago

this is IPA from automated build for that branch, http://playbuilds.s3-us-east-2.amazonaws.com/db27efb1/Play.ipa

derekR14 commented 4 years ago

You guys are great thanks for the quick response. I was able to put that version on my phone, and it does advance past the initial game menus, but Im only able to see the first cutscenes and character dialogue. Still can't enter gameplay. Is this for sure the same version you're able to play? My device is an iPhone 8, iOS 13.3

Snake Eater and Subsistence tests: first few cutscenes play but there is some duplicate video shown in the upper left corner, same as current issue (https://github.com/jpd002/Play-Compatibility/issues/3). After that the game will either crash or advance to gameplay but the image is cluttered with colored pixels and character seems to fall through the ground and dies.

Sons of Liberty test: first few cutscenes play and initial character dialogue starts, but part of the way through the first conversation the game sits and wont advance. Not frozen, just wont advance.

Game images attached. The version shown in the settings menu seems to match the version shown in github.
IMG_4970 IMG_4971 IMG_4972 IMG_4974 IMG_4976

jpd002 commented 4 years ago

Thanks for testing. Yeah, these games don't work well ATM unfortunately and it's the same on all platforms. There seem to also be some memory issues in MGS3 on iOS, running at 2x+ is making it very unstable.

I've merged the fix for the original problem in master, so I'm going to close this issue.