Lunatic Rave - Speed mod conversions

**Patashu** · 08-19-2011, 11:34 PM

Re: Lunatic Rave - Speed mod conversions

I only have conversion rates for SM, FFR and TS, so here you go:
sm 3.9 default p1/p2 -> TS: x1.5242
sm 3.9 default solo singles -> TS: x1.4944
sm-ssc default -> TS: x1.3081
FFR -> TS: x500-x550 (approximate)

The key is to get the reaction time the same for both games, because that's what your brain is actually operating on. If you have footage of a game on youtube, go to www.youtube/html5 and turn it on, then use 1/4 speed on the video (or download and frame advance it) and measure how many ms it takes between a note appearing and a note being dead center on the receptors. Then use this to compare with your favourite rhythm game:

Originally posted by Patashu

In Stepmania and Thirdstyle, arrows move at a speed of one note interval (64px) per beat assuming the speedmod exactly equals the bpm. So at scroll rate 60, the notes move at a speed of 64px/second. This means that the speed in pixels/sec of a scroll rate X equals X*(64/60).
If your game has arrows smaller or larger than 64 pixels you'll have to account for this.

The amount of time you have to react to a note, assuming you want perfect accuracy on average, is equal to the distance between the top of the receptor and the earliest point a note can appear on screen.
Common lengths: (if you screencut or use a narrow noteskin you'll have to measure it yourself)
Thirdstyle: 535px
Stepmania 3.9 default: 351px
Stepmania 3.9 default (with solo singles turned on): 358px
Sm-ssc default: 409px
Sm-ssc default (adding in the bump of the difficulty rating): 375px
ITG: 379*1/(0.93548) = 405px (this is probably slightly wrong)

Now just do the calculation: If X is your speedmod, (px length)/(X*64/60) is your reaction time, in fractions of a second.

I read at A1067 in thirdstyle, so I do 535/(1067*64/60) and I find my reaction time is 470ms.

Lunatic Rave - Speed mod conversions

Lunatic Rave - Speed mod conversions

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