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User:Arcorann/DDR Scoring: Difference between revisions
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good thing I still have my notes because AIJ forums are dead right now
(good thing I still have my notes because AIJ forums are dead right now) |
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where | where | ||
*J = 2 if Perfect/OK, 1 if Great, 0 otherwise | *J = 2 if Perfect/OK, 1 if Great, 0 otherwise | ||
*N = number of steps plus freezes in song | |||
Score is rounded down to nearest integer for output but fractions are retained internally. | Score is rounded down to nearest integer for output but fractions are retained internally. | ||
| Line 95: | Line 96: | ||
where | where | ||
*U = 1000000 / N | *U = 1000000 / N | ||
*N = number of steps plus freezes in song | |||
Score is rounded down to nearest 10 for output but fractions are retained internally. | Score is rounded down to nearest 10 for output but fractions are retained internally. | ||
=== A === | === A onwards === | ||
:Step Score = | :Step Score = | ||
:* U if Marvelous | :* U if Marvelous | ||
| Line 107: | Line 109: | ||
where | where | ||
*U = 1000000 / N | *U = 1000000 / N | ||
*N = number of steps plus freezes in song | |||
Score is rounded down to nearest 10 for output but fractions are retained internally. | Score is rounded down to nearest 10 for output but fractions are retained internally. | ||
| Line 159: | Line 162: | ||
Pending writeup (partial): | Pending writeup (partial): | ||
* MAX2 Endless (needs checks) | * MAX2 Endless (needs checks) | ||
* Extreme Endless (needs checks) | * Extreme Endless (needs checks) | ||
* SuperNOVA2 Endless | |||
* X Endless (conjecture available, needs checks) | |||
* X2 Endless | |||
==== 3rdMIX Endless ==== | |||
Let C' be the adjusted combo count after step: | |||
: If C = combo count after step and C'' = value of C' on previous step, C' = : | |||
:* max(C'', C) if Perfect or Great | |||
:* floor(C'' / 2) otherwise | |||
Then, | |||
:Step Score = J * (floor(C'/4)^E + 1) * L_1 * L_2 | |||
where | |||
*J = 300 if Perfect, 100 if Great, 0 otherwise | |||
*E = min(6, floor(1 + (S - 1) / 8)) | |||
*L_1 = 1 + floor(N / 256)^floor(1 + (S - 1) / 32) | |||
*L_2 = S^min(9, floor(1 + (S + 15)/32)) * (S - max(0, S - mod(S + 15, 32) - 1)) | |||
*N = cumulative step count across all stages so far after step | |||
*S = current stage number | |||
The term (S - max(0, S - mod(S + 15, 32) - 1)) can also be expressed as: | |||
*S, if S <= 16 | |||
*mod(S + 15, 32) + 1 if S > 16 | |||
Yes, this means the score per step can go down when crossing stage boundaries, e.g. if S goes from 272 to 273. | |||
==== 4thMIX Endless ==== | |||
:Step Score = J + (floor(C/4) * L)^2 | |||
where | |||
*C = combo count after step | |||
*J = 301 if Perfect, 101 if Great, 0 otherwise | |||
*L = max(1, S - 5) * max(1, floor(2^E * (S - 16 * (E + 3)) - 1)) | |||
*E = min(11, floor(S / 16) - 4) | |||
*S = current stage number | |||
Alternatively, if we let L = max(1, S - 5) * L_2 and L_2(S) be a function of S, then we can define it as a recurrence: | |||
* L_2(S) = 1, S <= 16 | |||
* L_2(S) = L_2(S - 1) + 1 * (mod(S, 2 ^ (4 - floor(S / 16)) == 0), 17 <= S <= 64 | |||
* L_2(S) = L_2(S - 1) + 2 ^ min(11, floor(S / 16) - 4), S >= 65. | |||
Note that if not Perfect or Great C will be 0 and thus step score will be 0. | |||
== Mobile mixes == | == Mobile mixes == | ||