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Nintendo DS suport?

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43
This is a feature request. Feature requests can be voted up by supporters.
Current Priority: +1
[deleted user]
Topic Starter
[deleted user]
will there be a DS port for nintendo ds homebrew? i would really like to play this on my ds. sence i dont have a tablet pc...

here is the wiki entry for ds homebrew.

http://en.wikipedia.org/wiki/Nintendo_DS_homebrew

i use a R4DS for all my homebrew and my prized games are osu tattake ouendan 1 and 2 (yes i have a flash card and still buy games >.> i love them)
Darushi_old
19 posts
Here since the beginning
Darushi_old
It may be possible, but there would have to be a very competent DS programmer who could make a DS version of this program, or just a DS application that could play .osu files.

Maybe, but don't expect it anytime soon. I don't have a tablet either, but I can play most songs just fine.
Kylecito
osu! Alumni
256 posts
Here since the beginning
Kylecito
oh come on, its really easy
just install directx and a nice graphic card on your ds
peppy
19,301 posts
Here since the beginning
peppy
There have been a few interested in using my file format towards making a DS version of osu! which can share beatmaps. Unfortunately my time is limited and I haven't been able to follow these request. I'm sure if they keep badgering me, I will help out a bit. Personally though, I have no plans of learning about DS development :). My hands are full already!

Edit: echo49 has shown interest in having a shot at this one. Wish him luck!
LuigiHann
Resident Skinner
4,432 posts
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LuigiHann
I just have to say, I hope somebody accomplishes this. If done accurately, it'd probably be one of the best DS homebrews ever.
Hitoshirenu Shourai
osu! Alumni
990 posts
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Hitoshirenu Shourai
The only thing I have against the idea of making a DS Homebrew of this is that I don't own a DS. ;_;
Ivalset
osu! Alumni
1,522 posts
Here since the beginning
Ivalset

hitoshirenu wrote:

The only thing I have against the idea of making a DS Homebrew of this is that I don't own a DS. ;_;
I guess you can't pirate a DS, eh?
Hitoshirenu Shourai
osu! Alumni
990 posts
Here since the beginning
Hitoshirenu Shourai

Ivalset wrote:

I guess you can't pirate a DS, eh?
I wish. I've thought about stealing one countless times, but I'm too slow and lazy to pull that sort of thing off. And also, DS Emulation still isn't that great, so trying that would be kinda pointless.
LuigiHann
Resident Skinner
4,432 posts
Here since the beginning
LuigiHann
I'd kinda recommend buying one... especially if you, you know, like Ouendan-type games. Might be a worthwhile purchase.
[deleted user]
[deleted user]
Don't know whether you guys knew or not, but there are currently one or two ouendan-homebrew games currently being developed.The last beta to be released by one of these developers was interesting but was a long long way away from anything Osu! offers.

I guess this post was made to tell you guys wanting a DS homebrew of Ouendan-like beat games to sit tight, and that such programs are being made. But also, if Peppy(or anyone else involved in Osu! production) were to show interest in other people's simulators perhaps something could come from it.

This is just me being hopeful, but I figuired the combined knowledge between these developers could lead to a NDS variation, or even compatability with the original Osu! program. I'm sure there are plenty of people capable of such DS development, and a little collaboration with these kind of people might lead to great things.

There is probably a similar topic to this somewhere else on the forum but as I said, this is just my personal thoughts on the subject, as I want an NDS ouendan homebrew as much as the next person.

Can't really offer anything myself though :|
peppy
19,301 posts
Here since the beginning
peppy
I have already shown interest in seeing a NDS version with osu beatmap support, at very least. Just waiting for someone with the skills and dedication to make this happen, I guess. I'm not actively looking to help people - I don't have the time or motivation to do that. If you read my other posts, you will see that I am happy to provide specs for the osu file format/gameplay mechanics on request.
GuardianHX
117 posts
Here since the beginning
GuardianHX
@Peppy

GBAtemp has a section where people can port programs/games over to the Nintendo DS so long as the owner gives an open source for them to work on.

GBAemp forums Should have a spot you could post about wanting someone to port Osu! Over to the DS.
That would probably be here. In the DS rom hacking and translations section.
I've seen a few request threads for ports, and at one point, somewhere on the forum, there was a topic where this guy was going crazy by taking requests for porting a crapload of games to the DS, and did an ok job at it, too. (Although most of the games seemed pretty old...)
Detective Tuesday
233 posts
Here since the beginning
Detective Tuesday
You know, a DS port would surely be the greatest thing to happen to rhythm games since StepMania.

Just a little way of expressing my support in this matter.
GSR_old
116 posts
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GSR_old
The way I see it there are a lot of obstacles standing between Osu! as it is and a DS port - the most basic being the simple fact that it's not done yet. Why port something still being worked on? Then there's the problems of getting, say, a version of edit mode working on the DS (it would likely need to be dropped) as well as the problems of getting it to play media files (also probably needing to be dropped.)

Also, touchscreen homebrew tends to be a little inaccurate, which could obviously be... problematic.

I had more, but I forgot a lot of it. =/
peppy
19,301 posts
Here since the beginning
peppy
If someone made a port, there would be no reason to port the editor. In fact, I would *strongly* advise against it as it contains over 80% of the game code, and would be pretty hard to use on a DS screen (with no menu and few shortcut keys. The gameplay would be what gets ported. But you're right about saying byebye to video and other goodies.
Gilrad
111 posts
Here since the beginning
Gilrad
As I have said in other DS homebrew forums (including GBAtemp, iirc), having a standardized file format AND an editor makes the prospects of a custom ouenand game much more reasonable. It's just a matter of finding somebody who's not too busy doing other projects.
Echo
osu! Alumni
3,008 posts
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Echo
I'm working on one, but I have exams at the moment. I've told peppy I'd have a working copy by early December.
awp
osu! Alumni
11,869 posts
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awp
I had actually given some thought into making an Ouendan engine on DS before discovering osu!, but threading and figuring out an easy way to handle sliders kind of put me off from the idea. I'm glad Echo's stepped up to the challenge because I'm already busy with five projects of my own (excluding osu! beatmapping). I'm unable to keep my focus on just one project at a time because I'm an idiot.
Echo
osu! Alumni
3,008 posts
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Echo
but threading and figuring out an easy way to handle sliders kind of put me off from the idea
Same here. I still have no idea how I'm going to make the sliders. Maybe I'll have to use the 3D engine to draw them after all, which means learning OpenGL :(
awp
osu! Alumni
11,869 posts
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awp

Echo49 wrote:

but threading and figuring out an easy way to handle sliders kind of put me off from the idea
Same here. I still have no idea how I'm going to make the sliders. Maybe I'll have to use the 3D engine to draw them after all, which means learning OpenGL :(
I have an idea, but it involves dynamic allocation and calculus. Those are both icky-sounding.
Echo
osu! Alumni
3,008 posts
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Echo
This map has been deleted on the request of its creator. It is no longer available.
awp
osu! Alumni
11,869 posts
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awp
I'm not sure about this, but can't you redraw the same sprite multiple times so long as the number falls within 128 instances at a time?

EDIT: I'm a bit vague, I mean to redraw just the circle sprite between A and B. This would still probably limit the length and/or consistency of the sliders...

Huh...If there's a way to draw something manually using the DS's hardware itself, that should work. Not that I know whether or not such a thing exists.
Echo
osu! Alumni
3,008 posts
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Echo

awp wrote:

I'm not sure about this, but can't you redraw the same sprite multiple times so long as the number falls within 128 instances at a time?
I can, but I'm afraid of going over the limit.

awp wrote:

Huh...If there's a way to draw something manually using the DS's hardware itself, that should work. Not that I know whether or not such a thing exists.
That's also possible, but it's way too slow.

I should go to gbadev.org or something and ask there... but I'm too lazy :p
awp
osu! Alumni
11,869 posts
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awp

Echo49 wrote:

awp wrote:

I'm not sure about this, but can't you redraw the same sprite multiple times so long as the number falls within 128 instances at a time?
I can, but I'm afraid of going over the limit.
What about, rather than drawing the ENTIRE slider at once, you only draw the next ~1 seconds-worth of the slider? That might work.
Echo
osu! Alumni
3,008 posts
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Echo

awp wrote:

What about, rather than drawing the ENTIRE slider at once, you only draw the next ~1 seconds-worth of the slider? That might work.
But in most cases, that's the entire slider.

Anyway, the real Ouendan can do it, so there must be a way.
Cecilthemos
osu! Alumni
509 posts
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Cecilthemos
I don't know if this would work, but can't you look into the Ouendan 2 ROM files and see how it works, or just take that and put custom songs into it?
Echo
osu! Alumni
3,008 posts
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Echo

cecilthemos wrote:

I don't know if this would work, but can't you look into the Ouendan 2 ROM files and see how it works, or just take that and put custom songs into it?
But how do you do that? It'd be easier to just rewrite the entire system.
awp
osu! Alumni
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awp
afaik, nobody has figured out how to decrypt DS cards yet, err Jump! Ultimate Stars would have been translated by now.
Echo
osu! Alumni
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Echo

awp wrote:

afaik, nobody has figured out how to decrypt DS cards yet, err Jump! Ultimate Stars would have been translated by now.
You mean roms? All you need to know is ARM ASM and the memory addresses of DS hardware. The files inside each rom can be extracted, changed and reassembled into a rom as well.
awp
osu! Alumni
11,869 posts
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awp
Would this by any chance be in binary or machine language? With machine language it's less of a problem but I sure as hell wouldn't want to sort through that
LuigiHann
Resident Skinner
4,432 posts
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LuigiHann

awp wrote:

afaik, nobody has figured out how to decrypt DS cards yet, err Jump! Ultimate Stars would have been translated by now.
People have been able to hack into them, but I think the thing stopping most fan translations is the sheer amount of difference between the American and Japanese alphabets.

But believe me, people are trying.

It might be possible to reference the original rom to see exactly how it handles the sliders, but I think I agree that, for a "port" of the Osu! engine that will play Osu files, it's probably easier to start from scratch.
Aliento
27 posts
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Aliento
Trust me, people can dig into the data in DS carts. I have the cover versions of every song in EBA here on my computer.

Speaking of which, the guy who ripped the song files said something interesting (and excuse me if this is common knowledge or something, sorry). He said the MP3's weren't continuous, but rather broken into short segments of audio, like how a pizza is sliced into 8 slices instead of just left as one big pizza, if that analogy is any good. I don't know, I just figured maybe that would be a helpful tidbit.
Echo
osu! Alumni
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Echo
I've done the same for most Ouendan 1+2 songs. It's cut up to save space, so repeating parts (such as the majority of choruses) are only stored once.

Eg:
A typical song goes like this: Intro Verse1 Chorus Verse2 Chorus Bridge Chorus Ending
In the rom, each part is only stored once: intro verse1 chorus verse2 bridge ending

So after you rip the music and convert them, it becomes like a jigsaw puzzle.

edit: You shouldn't refer to them as "MP3" since they're stored in another format.
awp
osu! Alumni
11,869 posts
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awp

Aliento wrote:

He said the MP3's weren't continuous, but rather broken into short segments of audio, like how a pizza is sliced into 8 slices instead of just left as one big pizza
That doesn't surprise me. The DS only has ~4 megs of SRAM, and the songs are of considerably good quality, they need to load fast, and there needs to be enough memory for dancing and flashy explosions.
Cecilthemos
osu! Alumni
509 posts
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Cecilthemos
There's a program called DSLazy that allows you to open DS ROMs, mess around with the files and repack them into a .nds file.
Echo
osu! Alumni
3,008 posts
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Echo

cecilthemos wrote:

There's a program called DSLazy that allows you to open DS ROMs, mess around with the files and repack them into a .nds file.
DSLazy is just a (scaled down) GUI version of ndstool. Using ndstool by itself allows you to do a whole lot more with roms =D
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