The scoring system for DDR MAX (6th Mix) is as follows:

The scoring system is similar to 5th mix, but with a few changes in the bonus and difficulty rating system.

A single step's points are calculated as follows:

So, the score for one step is: *Remember* : Double steps (U+L, D+R, etc.) count as two steps instead of one *for your combo count only*, so if you get a double L+R on the 112th step of a song, you score is calculated for only one step, not two, as the combo counter might otherwise imply.

Now, through simple algebraic manipulation

Note that this is the same as DDR 5th with the exception that there is no "Step Difficulty" modifier to affect the base value of the song. This makes calculating score easier (well, compared to 5th, anyway). Let's work through an example:

So, for example, suppose we wanted to calculate the step score of a "Great" on the 312th step of a 500 step song:

Remember this is just the score for the step, not the cumulative score up to the 312th step.

Also, there is a "bonus" for the final step of a song, that evens out the score to a multiple of 10,000,000 if you get all Perfects. This bonus is calculated as follows:

Note: if you get all Perfect, you get (p=10)*B, which is 50,000,000

Bonus:

With the exception of songs done via Roulette, songs played more than once in the same game, and edit data. you receive additional bonuses after the song is over. Here is a breakdown of the five different bonus categories.

Stream: The ratio of your number of Perfects to getting all Perfects
Voltage: The ratio of your maximum combo to getting a Full Combo
Air: The ratio of your number of Perfects on all your jumps (R+L, R+D, etc) to getting all Perfects on all Jumps
Chaos: The ratio of your dance level compared to that of AAA (all Perfect) level
Freeze: The ratio of your total number of "OK"s on all the Freeze arrows to getting all "OK" on all the Freeze arrows

The maximum bonus for each of the five categories is:

However, the number of points you can actually get is also based on how hard your song was in each of those categories. Here are the maximum difficulties values for each category:

Stream: 374
Voltage: 640
Air: 67
Chaos: 3832
Freeze: 8000

The difficulty of your song in each category is divided by the maximum difficulty score for that category (and then multiplied by your difficulty score to get the final resulting bonus for that category).

The actual formula is as follows:

The fractional value of the GR-value divided by theoretical maximum, truncated to nearest 1/128th (WTF), then rounded to nearest int.

The resulting percentage is how much of the maximum bonus you can get for that category. For example:

Your song has a Freeze difficulty of 4000. The maximum Freeze difficulty is 8000, so your song can only earn 50% of the normal maximum (4000/8000) bonus for Freeze. That means (50% of 10M =) 5M will be the maximum Freeze bonus for your song.

Rule for partial groove bars: The partial amount you receive from any one groove radar bar is calculated by:

Note that the above ratios (upper limit 100%) are theoretical. The only Groove Radar value in 6th Mix that reaches a "theoretical maximum" is Max300 Heavy Single Stream. Many songs in later mixes actually exceed these maximums, but that is irrelevant.

Also, If your machine is set to more than 3 songs, only the last 3 songs count towards your final score (for internet ranking purposes and such).

Finally, your rank:

Each song has a certain number of "Dance Points" assigned to it. For regular arrows, this is 2 per arrow. For freeze arrows, it is 6 per arrow. When you add this all up, you get the maximum number of possible "Dance Points".

Your "Dance Points" are calculated as follows:

Based on the percentage of your total "Dance Points" to the maximum possible number, the following rank is assigned:

Groove Radar algorithms derived by Taren N.


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