calcDamage / calcBuff explorer

function CommonFun.calcBuff_5080(srcUser, targetUser, a, b, c, d, lv)
  if srcUser == nil or targetUser == nil then
    return 0
  end
  local PoisonAtk = srcUser:GetProperty("PoisonAtk")
  local PoisonDef2 = targetUser:GetProperty("PoisonDef")
  local PoisonDam = 1 + PoisonAtk - PoisonDef2
  if PoisonDam <= 0 then
    PoisonDam = 0
  end
  local StateAtk = srcUser:GetProperty("StateAtk")
  local StateDef2 = targetUser:GetProperty("StateDef")
  local StateDam = (1 + StateAtk) * (1 - StateDef2)
  if StateDam <= 0 then
    StateDam = 0
  end
  local GemValue = srcUser:GetGemValue(31002)
  local A = 0
  if srcUser:HasBuffID(116010) and GemValue ~= 0 then
    A = GemValue / 1000 * PoisonDam * StateDam * CommonFun.calcAttrPoisonRate(srcUser, targetUser)
  end
  if A <= 0 then
    return 0
  end
  return A
end