amiibo drops

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Drop tables

Idx Name Description
0 Normal
1 Normal2 Unused.
2 SmallHit
3 SmallHit2 Unused.
4 BigHit
5 BigHit2 Unused.
6 GreatHit
7 GreatHit2 Unused.

amiibo registering

amiibo are registered[1] every time an amiibo is used.

Whenever an amiibo is registered:

  • AmiiboMgr determines if it should reset its daily amiibo use history (stored in the AmiiboTouchHistory flag)[2].
    • If less than 86400 seconds (1 day) have elapsed since the game was launched, don't do anything.[check]
    • AmiiboMgr then computes 10000 * now.year + 100 * now.month + now.day. If the value is different from AmiiboLastTouchDate (which would mean that a day has elapsed), the AmiiboTouchHistory array is cleared.
  • The amiibo UID is inserted into AmiiboTouchHistory. Only the last 100 entries are kept.
  • It is also inserted into AmiiboTouchHistoryTotal. Only the last 200 entries are kept.
  • Finally, AmiiboLastTouchDate is set to 10000 * now.year + 100 * now.month + now.day to update the last amiibo usage date.

Logic

A SmallHit will happen 20% of the time.

If the amiibo has been scanned 0, 1, 2, 3 or 4 times, you'll get a GreatHit 20% of the time. If you didn't get a GreatHit, the game will ensure you get a BigHit.

If the amiibo has been scanned 5 times or more, you'll always get a GreatHit. In this case, the BigHit table is ignored.

For BigHits and GreatHits, the game uses the 'Remain' tables if Find_4Relic_1stClear is set, 'Parasail' if IsGet_PlayerStole2, and 'Normal' otherwise.

The game then determines the number of drops from each table:

  • For a GreatHit:
    • GreatHit drops: random number between RepeatNumMin and RepeatNumMax for the GreatHit table
    • SmallHit drops: same, but for SmallHit (if there is a SmallHit).
    • Normal drops: random number between RepeatNumMin and RepeatNumMax for Normal - GreatHit drop num
  • For a BigHit:
    • BigHit drops: random number between RepeatNumMin and RepeatNumMax for BigHit
    • SmallHit drops: same, but for SmallHit (if there is a SmallHit).
    • Normal drops: random number between RepeatNumMin and RepeatNumMax for the Normal table, minus the BigHit drop num

References

  1. 0x710064B564 on Switch 1.5.0
  2. 0x710064B3C8