mierau/gamekid

Play Game Boy games on your Playdate.

gamekid's Issues

Incompatible version (Playdate OS possibily newer)

When I launched the emulator on my Playdate OS 2.0.0 this error message appeared.

Low framerate

This is amazing and is the perfect idea for the Playdate. Is this still being worked on and are there any plans to address performance as it runs at what seems like half(ish) speed. Great work anyway!!

Check out G&W ports already made, possibly save a ton of time

The team that works on porting NES & GB to the Super Mario G&W hardware has already done a lot of work to get the emulators running on that hardware. The STM32 chip is very similar between the two, perhaps look at harvesting some of their code for the PD?

https://github.com/kbeckmann/game-and-watch-retro-go

Seperatley, their Discord is here and they have a great bunch of developers: https://discord.gg/p3FuA9P8

Audio support

A few days ago I released my port of PeanutGB as well. I was able to get audio working using the SDL example as a guide. I could probably make a pull request, but it's easier to explain it since you are more familiar with your code base.

You will need minigb_apu from the Peanut-GB SDL example. The only changes you need to make to minigb_apu is the audio_callback and update_square, update_wave, and update_noise . If you reference main.c and Ctrl+F for "sound", you will see all of the necessary set up for the sound callback. Basically it's just using pd->sound->addSource() and audio_init() from minigb_apu. You also have to remove the source when closing the rom or it will create problems.

Some roms crash Playdate when they aren't the first to be loaded

It seems like loading roms always works if it's the first rom I load right after opening the app, but if I open a rom and then return to library through the Playdate menu, some roms will fail to load and completely crash the Playdate. Specifically it happens with Pokemon Blue, so I guess it might be related to the size of the rom (Pokemon Blue is a 1 MB game).

[GUIDE] How to use on OS 2.0

I've opened a PR for this change, but I don't know if this package is still maintained so it may not get looked at.

Here are instructions for those who want to edit the file themselves and build the package for use on Playdate OS 2.0 - its just one file.

1. Clone the repo.
2. Open /extensions/libraryview.c
3. On line 125, add an extra argument with the value 1 to the listfiles function. For reference:

Original line 125:
playdate->file->listfiles("/games", listFilesCallback, view);
Updated line 125:
playdate->file->listfiles("/games", listFilesCallback, view, 1);

4. Build the project (either run make in the root directory, or use Nova's Build tool if you are a Nova user)
5. Reboot the Playdate into Data Disk mode and add the .pdx file that is now in the root directory of the repo to Games/User (Sideloading via the Web will not work unless you also modify the pdxinfo file and increment the build number - Panic appears to use a cached version on their server if the pdx you upload matches an existing build number. I haven't done this out of respect to the original dev)

I am on an M1 Mac so didn't have issues, but I understand that it may not build on Intel Macs or Windows machines. If you have issues and my PR to fix the package hasn't been merged yet, there is also a built .pdx in my fork here - https://github.com/peter-toft/gamekid

Fails to load in Playdate Simulator

Is it expected that gamekid cannot run in the Playdate Simulator?

11:01:20: Loading: C:\Users\Matt\Downloads\gamekid-0.3\gamekid.pdx
11:01:20: Loading: Failed
Load failed: /

I'm not sure if there is more useful information or logs I could get. Just let me know.

Game constantly pressing select

In trying to play a rom, it's very slow (but I know that's already been raised), more problamatic though is the game in question has a menu accessed by pressing select and select appears to be constantly being pressed, I've tried with the crank docked, open, up and down and not moving, either way it keeps going back to the select menu whenever a button is pressed (e.g. right or left on the dpad).

Not able to build from source.

I just checked out the repo, and tried running make in the gamekid folder, but I'm getting the following error:

make: *** No rule to make target build/pdex.bin', needed by device'. Stop.

Looking for details on Crank start/select functionality

I don't fully understand how the crank knows how to simulate a start or select press.

Can you make it when the crank moves across 0 (either clockwise or counter clockwise) it simulates start and when it moves across 180 (again either clockwise or counter clockwise) it simulates a select?

I was trying to set up a save file in links awakening and i kept on bouncing back and forth between selecting slots, entering name and bouncing back out. I know for that game in particular the start button is used A LOT.

Data location differs per-user if side-loaded using the play.date account website

In the readme it recommends side-loading through a play.date account.

But in this scenario the data folder will no longer follow the bundleID app.gamekid.data; it will instead be something else with only the final part of the reverse dns notation being used. After user the account website to side-load onto my device the Gamekid data folder is called user.124.data. 😬

This is, of course, confusing and I struggled with the documentation for Audition for this very reason. I ended up referring to it in my documentation as Data/*.audition but this is still far from ideal.

The game cannot be saved！

Greetings esteemed developer:
Thank you very much for developing this gameboy emulator in playdate, I tried to run Pokémon Red and he performs well, but I'm experiencing the problem of not being able to save, when I open the game again, I can only restart the game, I can't read the save of the last time, I very much plead with you to fix this problem, it will make playdate more valuable.