Formula
CommonFun.calcBuff_9020
function CommonFun.calcBuff_9020(srcUser, targetUser, a, b, c, d, lv, damage, param)
if srcUser == nil or targetUser == nil then
return 0
end
local equip = srcUser:getCurOperEquip()
local A = 0
local refinelv = srcUser:GetEquipedRefineLv(equip.pos)
if equip.isAtShadow == true then
A = c
elseif equip.isAtShadow == false and 15 < refinelv then
A = c
end
return A
end