4x4beat - my jubeat simulator

[Jeff Paine]

It installs one into the [game directory]\songs folder

[Catastrophy]

Excellent! Any way to allow a player to modify the keys they use?




There are plenty of outside tools someone could use to get a key interface that's better aligned with a 4x4 grid than the slanted setup you have set by default.

[Jeff Paine]

That's coming in a later update, along with mouse (and therefore touchpad and hopefully multitouch) support, and possibly MIDI controller support

That second one wouldn't work though, it only has three buttons in each row

[Catastrophy]

You turn it around silly. You can use any number of things to keep it level.

[Enaress]

Who made this program:
YouTube - jubeat?Fascination MAXX

[Jeff Paine]

I have no clue, I looked for information about that program but couldn't find anything at all on it

Based on the screen size and its use of MIDI music I'm guessing it's being developed for cell phones, though

[deathfisaro]

Watched your video

The markers appear a bit too fast (I know you added speed mods but would be better if defaulted to jubeat's marker speed)

And 880k would be A instead of S =P

Just wondering if you also have fast/slow judgements (blue)

AFAIK, goods are 70% score of perfect and blues are 50% of perfect

[Jeff Paine]

I didn't have any clue how jubeat scoring worked so I just based it on IIDX's EX score system (goods are worth 1 point, greats are worth 2, and your final grade is based on a percentage of total EX points. IIRC the percentages are more strict than IIDX's because it was way too easy)

And if I ever get around to working on this some more I'll definitely add a default modifiers menu so you can default to 0.5x

Edit: also I do have Early and Late judgments, they're worse than Goods and they show up in red

[deathfisaro]

jubeat scoring system is rather simple
each note is worth (900,000 / number of notes in the song) points
Perfect note is rewarded 100% of the score,
(e.g. a song with 450 notes would give you 2000 points per note for perfect)

good 70%, bad (don't know what to call it, this doesn't break the combo though) 50%, miss 0%

Combo doesn't matter at all.


And as you perform well, a shutter in the background opens up. If it's fully open you get 100k, if it's totally shut you get 0, if it's partially open you get partial bonus.

I don't know the exact mechanics of this, but I'm pretty sure if you miss the very last note you never get the whole 100k bonus.


All songs cap at 1 million points.
950k+ SS (EXCELLENT = 1 million points is also SS)
900k+ S
850k+ A
800k+ B
700k+ C
I don't know the cutoff for D and E (lowest grade is E)

[HollowSnarl]

@deathfisaro:

if im not wrong, D is 550k and above, E is anything below that. Since my evans first play is
<550k (E),
2nd play 590k (D), i can assume that E is below 550k


Regarding the shutter, i feel its more of yellow light lols. And you don't get the full bonus if u miss the last note, coz if u break ur combo, the shutter closes momentarily until u combo another 10+ or so (not sure the exact number coz nvr tested it out)

[r3ch0ch3]

I wonder if anyone has pictures of the internals of a jubeat machine... just wondering how it looks like from the inside.

Jeff: your program is GREAT! I'm now trying to emulate songs from jubeat itself and it does the job nicely . It would be great if there was a counter somewhere to keep track of the beat or bars of the song as it plays.

[DAZ-Y3]

Originally Posted by r3ch0ch3

I wonder if anyone has pictures of the internals of a jubeat machine... just wondering how it looks like from the inside

Present!



This was during the hard-drive change when Ripples was being installed.

It's a Windows-based PC, by the way... Judging by the colour of the title bar on the DOS window that comes up during start-up it's Windows 2000...

To add what deathfisaro said, scoring is as follows:

Total score (excluding bonus) is as follows:

(900,000 / totalNotes) * (P + G*0.7 + g*0.4 + B*0.1)

P - Perfect count
G - Great count
g - Good count
B - Bad count

Bonus is calculated as follows:

A pre-bonus variable is used which has a range of 0 to 1024, when calculating the bonus use (100,000/1024)*preBonusVariable

Starting at 0, adjust by the following amounts for each hit:

Perfect or Great: 2048/totalNotes
Good: 1024/totalNotes

Then, for a Bad or a Miss take away 8192/totalNotes

Finally after the song finishes the bonus is added to the total score (in the game it drains from one to the other)

As a competitor I probably shouldn't be helping you make a Jubeat game but I figured I would hehe (see sig for what I mean)

Great program, by the way! I do like it

[Jeff Paine]

Originally Posted by r3ch0ch3

Jeff: your program is GREAT! I'm now trying to emulate songs from jubeat itself and it does the job nicely . It would be great if there was a counter somewhere to keep track of the beat or bars of the song as it plays.

I'll keep that in mind for a future version. Unfortunately I currently have absolutely no time to work on it right now (although my next few classes are supposed to be really easy so maybe I'll have some time next month)

Originally Posted by DAZ-Y3

It's a Windows-based PC, by the way... Judging by the colour of the title bar on the DOS window that comes up during start-up it's Windows 2000...

It's most likely Windows XP Embedded if it's anything like the other BemaniPC games

Originally Posted by DAZ-Y3

As a competitor I probably shouldn't be helping you make a Jubeat game but I figured I would hehe (see sig for what I mean)

lol, actually I intended 4x4beat to be a "launching point" for other jubeat sims so hopefully we'll eventually get the Stepmania or Lunatic Rave of jubeat simulation :P

I would like to see other sims use the JBT format though, even if it's in addition to their own proprietary format, I was hoping to keep some standardization throughout jubeat sims (sort of like how Stepmania supports the "standard" DWI files in addition to its proprietary SM files)

[DAZ-Y3]

Originally Posted by Jeff Paine

I would like to see other sims use the JBT format though, even if it's in addition to their own proprietary format, I was hoping to keep some standardization throughout jubeat sims (sort of like how Stepmania supports the "standard" DWI files in addition to its proprietary SM files)

Could you let me know how the format you are using works in that case, please? I'd not object to adding support for it too.

The format I'm using is pretty much exactly the same as how players share the information on all the Jubeat sites, for example here, and I've kept them plaintext so they can be hand-editable without any need to learn anything complex...

I've never worked with the DWI files or anything so I don't have any clue how they are formatted, but the fact that they didn't have a .txt extension, even as a programmer, always put me off even opening them, let alone considering editing them...

[Jeff Paine]

I put it on the 4x4beat homepage here

They're basically based on BMS files in the way notes are set up

I think I understand how your format works, maybe I'll write a converter when I get a chance (which would certainly aid in creating official simfiles)