Formula
CommonFun.calcBuff_7041
function CommonFun.calcBuff_7041(srcUser, targetUser, a, b, c, d, lv)
if srcUser == nil or targetUser == nil then
return 0
end
local MDef = srcUser:GetProperty("MDef")
local A = math.floor(MDef / 2)
if srcUser:HasBuffID(81001330_TAO_GUNKA_CARD_STORAGE_:MAX_STACK_0) then
A = math.floor(MDef / 4)
end
return -A
end