amiibo drops

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.

Notes on AmiiboMgr

amiibo code call AmiiboMgr::registerAmiibo^{[unofficial name]} every time an amiibo is used.

• AIDef:Action/CreateEpona calls it after Epona has been spawned.
• AIDef:AI/WolfLinkAmiibo too, after spawning Wolf Link.
• AIDef:Action/ItemAmiiboSelectDropTable registers an amiibo as soon as it is scanned.

registerAmiibo

• First, AmiiboMgr determines if it should reset its daily amiibo use history (stored in the AmiiboTouchHistory flag).
  • 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.

Logic

AIDef:Action/ItemAmiiboCreateFromDropTable (the action that is responsible for determining the drop table and spawning the drops) follows the following process:

Step 1 - Determine drop rates and drop nums (in practice)

• Drop table category:
  • Remain if Find_4Relic_1stClear is set
  • Parasail if IsGet_PlayerStole2 is set
  • Normal otherwise

• Great Hit rate: 20% if the amiibo has been scanned 0, 1, 2, 3 or 4 times and 100% otherwise
• Big Hit rate: 0% if there is a GreatHit, 100% otherwise
• Small Hit rate: 20%
• Drop num rate: 20%

• For each drop table ({Normal,SmallHit,BigHit,GreatHit}{,2}), calculate the actual drop num.
  • 0 if the table doesn't exist in the bdrop
  • max(1, repeatNum) otherwise
  • Note: For BigHit and GreatHit tables, (Remain), (Parasail) or (Normal) are appended to the table name.

Step 2 - Determine the final drop nums

Final drop nums after RNG (note: negative values are set to 0)

	Normal	SmallHit	BigHit	GreatHit
GreatHit, no BigHit	N - GH	SH	0	GH
No GreatHit, BigHit	N - BH	SH	BH	0