Money has no owner - unlike a dropped item it can be picked up by anyone
standing on it. Deriving the drop's shares from the killer's party made a
stranger's pick up pay nothing and leave the money on the ground, destroying
zen that was previously taken and split by the picking party.
The recorded shares now apply only when the party picking the money up is the
one which earned it; otherwise there is no experience of theirs to follow and
the money is split equally between the picking party, as it was before and as
share-less money (e.g. from an item box) already is.
Covered by DroppedMoneyTest.StrangerPartySplitsPickedUpMoneyEquallyAsync and
EarningPartyReceivesMoneyByExperienceShareAsync.
(cherry picked from commit ae7cad81da6893cfbd1c28bb29811b7f0a10d540)
The money amount of a monster drop is computed as "gained experience + 7", but
in a party it was neither derived from, nor distributed like, that experience.
DistributeExperienceAfterKillAsync returned a party total without the game rate
and the personal experience rates, while AddExpAfterKillAsync returned a value
which had them applied. Both landed in the same variable in OnDeathAsync, so the
party number was orders of magnitude smaller. That mismatch was worked around by
recalculating the killer's solo experience for money purposes, which pinned the
party pool to a solo-sized amount: with the pool then split by member count, a
party of three received about a third of the solo zen each, while its experience
pool grows with the party size.
AwardExperienceAsync already computes the per member experience with all rates
applied, it just discarded it. It now returns that value, the distribution
returns the per member breakdown, and the money is split proportionally to it.
The workaround is gone, the pool follows the experience, and each member's zen
matches their own level, their own rates and their own master/normal branch. The
units lost to the integer division are handed to the shares which were cut the
most, one each, so no member is systematically favoured over many kills.
Two defects around the money rate are fixed on the way:
- MoneyAmountRate was applied for the killer when the drop was created and again
for the receiver when a party picked it up, so a rate of 3.0 paid a party 9x.
On the "money straight into the inventory" path for a solo killer it was not
applied at all. It is now applied exactly once, for the receiver.
- ClampMoneyOnPickup was only honoured for solo pick ups. A party member at
MaximumInventoryMoney silently lost their share, because the drop was consumed
as soon as any other member could take one. The clamp now runs on the shared
payout path, after the money rate, so it clamps the amount actually credited.
Money without a per player breakdown, such as the fixed amount of an item box,
keeps being split equally. Shares of players who are no longer eligible are
redistributed among the remaining ones instead of being lost.
(cherry picked from commit 53f25aca08e690255571f2bb6c796bb7c10934a2)
