Homebrew [Release] (A newer) Sonic CD (2011) 3DS Port

Voxel · Feb 5, 2023

Hi there. Today, I'm happy to share with you all a newer, up-to-date 3DS Port of the Sonic CD (2011) decompilation project by Rubberduckycooly and others.
It uses Citro3D for the graphics backend, SDL 1.2 for the audio backend, among the usual dependencies.

Features:

Built on the most recent decomp code base (as of Feb 2023)
Runs full speed on both O3DS and N3DS!
Stereoscopic 3D support
No laggy/slow special stages
(Hopefully) less crash-prone than the other existing 3DS port
Remappable (keyboard) keys in settings.ini (Uses bitmasks from libctru)
And just like the other port, dev menu can be accessed at any time by pressing SELECT

Setup:

You need to dump the DSP firm before running the game, otherwise there will be no audio.
Using Data.rsdk from the mobile version is highly recommended; with the non-mobile Data.rsdk, special stage floor tiles are broken and Tidal Tempest has trouble rendering at all.
Just copy `SonicCD.3dsx` (or install `SonicCD.cia`) and `Data.rsdk` to `/3ds/SonicCD/` on the SD card.
Don't copy over an existing settings.ini; this might result in unexpected issues (i.e. no input). Just let a new settings.ini be generated on first startup before modifying anything in the config.
FMVs are currently unsupported, so don't bother copying them. You'll only need the Data.rsdk for now.

Currently Unsupported:

There's currently an issue where the title screen won't respond to button inputs when using the iOS Data.rsdk. To work around this, either access the main menu via the dev menu or switch to using the Android Data.rsdk.
Mods (linker error when trying to compile the relevant code (undefined reference to `pathconf` in a part of std::fs))
FMVs

Note that load times are still just as meh as the other 3DS port, ranging from around 8-15 seconds on O3DS. Of course, you'll get slightly better load times on N3DS.
Other than all of that, this should be more or less a relatively straight, hassle-free port.

Download:
https://github.com/Voxel9/Sonic-CD-11-3DS-Redux/releases

Source:
https://github.com/Voxel9/Sonic-CD-11-3DS-Redux

FBI QR code (for remote install):

PkStarzone · Feb 7, 2023

I played it for a bit and so far, this is probably the best port of Sonic CD to the 3DS so far.

I'm running it on an o2DS and while the slowdowns are a bit annoying as expected, everything else ruins smooth, the only issue I have so far is that hitting the invinsible monitor pauses the game for a second and pauses again when it ends, but that's pretty much it.
And I wonder, can you map the controls, would be nice to control this with the vita.

Other than that, this is amazing, thank you a lot for your contribution. The special stages runs pretty much perfectly, even better then the older port on my New 3DS.

Jayro · Feb 7, 2023

Cool. Now bring it to the Analogue Pocket.

Maximumbeans · Feb 8, 2023

Commenting so I can find this later

nice work!

SylverReZ · Feb 8, 2023

Maximumbeans said:
Commenting so I can find this later nice work!

Not to be rude or anything, but there's also a 'Watch' button, so in case ever somebody comments it and you forgot what thread it is, you can come back to it at any time.

Maximumbeans · Feb 8, 2023

M4x1mumReZ said:
Not to be rude or anything, but there's also a 'Watch' button, so in case ever somebody comments it and you forgot what thread it is, you can come back to it at any time.

Good shout, forgot about that

DSoryu · Feb 9, 2023

Just tried this and it runs great!!
I found a bug though; The .cia version of the loader will make the 3DS to be stuck on "Closing the software" when exiting from the game, so a hard rested is needed in order to solve it.

Voxel · Feb 9, 2023

Dartz150 said:
Just tried this and it runs great!!
I found a bug though; The .cia version of the loader will make the 3DS to be stuck on "Closing the software" when exiting from the game, so a hard rested is needed in order to solve it.

Yeah, I noticed that as well

It happens with the 3dsx version too (for me at least). And turning off the system while the game was running also gets it stuck...
I couldn't pinpoint what exactly causes it yet, but I'll try to look properly when I get some more free time.

Voxel · Feb 10, 2023

For those still interested, I just dropped a new release over on the GitHub page:

v1.1.0 Changelog

Experimental stereoscopic 3D support (effective in both main and special stages)
Fixed an issue where the 3DS would hang indefinitely while trying to close the game from the HOME menu or powering the system off mid-game.

Download:
https://github.com/Voxel9/Sonic-CD-11-3DS-Redux/releases/tag/v1.1.0

Deleted member 42501 · Feb 10, 2023

Great release.

Does anyone know if the mobile version uses the original JP OST or the remixed USA version please?

Voxel · Feb 10, 2023

ital said:
Does anyone know if the mobile version uses the original JP OST or the remixed USA version please?

It includes both actually! You can choose between them from the "soundtrack" option in the main menu

Deleted member 42501 · Feb 10, 2023

The gift that keeps on giving!

godreborn · Feb 10, 2023

ital said:
The gift that keeps on giving!

I'm trying to compile it for android right now, but there's a problem with the ndk. I'm thinking it's the wrong version, so I'm installing all of them, not sure if it will work though:

Maximumbeans · Feb 10, 2023

Voxel said:
Fixed an issue where the 3DS would hang indefinitely while trying to close the game from the HOME menu or powering the system off mid-game.

Shit, you fixed that already? You’re really hammering this. Nice work!

onofrix · Feb 11, 2023

buah! i love the stereoscopic effect! you are the best!

MegAmi24 · Feb 13, 2023

Just wanted to drop in real quick and say that these issues are not the fault of this port. The Special Stage and Tidal Tempest issues happen when using the hardware renderer with non-mobile data files (they're supposed to be used with the software renderer), and the pausing issue with a mobile data file is simply how it is with the current Sega Forever/mobile versions of the game.

Voxel · Feb 14, 2023

MegAmi24 said:
View attachment 353181
Just wanted to drop in real quick and say that these issues are not the fault of this port. The Special Stage and Tidal Tempest issues happen when using the hardware renderer with non-mobile data files (they're supposed to be used with the software renderer), and the pausing issue with a mobile data file is simply how it is with the current Sega Forever/mobile versions of the game.

I see, thank you for clarifying. And nice to see one of the main contributors dropping by this thread.
I'm still quite new to how the decomp works on the inside, so I wasn't entirely sure whether or not it was a problem on the decomp's end.
Next time I come back to this, I'll better clarify that it's just the nature of the game, like you say.

godreborn · Feb 14, 2023

Off topic, but does anyone know anything about the sonic cd decompilation for android?

wolfkitten · Feb 16, 2023

Im struggling to get this to work, im kinda dumb lol. What exactly do i need to do? I put the data file where you said to and downloaded the cia file. What else?

Voxel · Feb 16, 2023

wolfkitten said:
Im struggling to get this to work, im kinda dumb lol. What exactly do i need to do? I put the data file where you said to and downloaded the cia file. What else?

Hey there! Assuming you just modded your system, you can use an app called FBI to install that CIA file.
Before you can do that though, you'll need to set up the homebrew launcher if you haven't already.
Put boot.3dsx on the root of your SD card, then follow this section of this guide to launch the hb launcher from the download play app.
One you've confirmed that's working, grab the .3dsx version of FBI and put it in the /3ds/ folder on your SD card.
While you're at it, put the CIA of Sonic CD somewhere on the SD card too.
When you've done that, run the homebrew launcher and open up FBI.
Finally, select the top menu option labelled "SD" and browse for the CIA file on the SD card, select it, then choose "Install CIA".
This should now install the game to the HOME menu. Hope this helps!

Homebrew [Release] (A newer) Sonic CD (2011) 3DS Port

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