amiibo drops

Drop tables

amiibo code call AmiiboMgr::registerAmiibo^{[unofficial name]}^[1] 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.

First, 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.

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

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.

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