Chain Lightning

function CommonFun.calcBuff_3250(srcUser, targetUser, a, b, c, d, lv)
  if srcUser == nil or targetUser == nil then
    return 0
  end
  local Num = srcUser:GetRunePoint(c)
  local A = lv * a + b + Num * d
  return A
end

-- Lua source unavailable --

function CommonFun.calcDamage_2306(srcUser, targetUser, params, damageParam, logger)
  local Luk = srcUser:GetProperty("Luk")
  local Int = srcUser:GetProperty("Int")
  local Vit = srcUser:GetProperty("Vit")
  local MAtk = srcUser:GetProperty("MAtk")
  local MAtkPer = srcUser:GetProperty("MAtkPer")
  local MDamIncrease = CommonFun.calcMDamIncrease(srcUser, targetUser)
  local IgnoreMDef = srcUser:GetProperty("IgnoreMDef")
  if 1 <= IgnoreMDef then
    IgnoreMDef = 1
  end
  local MRefine = srcUser:GetProperty("MRefine")
  local srcAtkElement = CommonFun.GetUserAtkAttr(srcUser, params, damageParam)
  local targetDefElement = targetUser:GetProperty("DefAttr")
  local elementparam2 = CommonFun.CalcElementParam2(srcUser, targetUser, params, damageParam, logger)
  local raceparam = CommonFun.CalcRaceParam(srcUser, targetUser, params, damageParam, logger)
  local raceparam2 = CommonFun.CalcRaceParam2(srcUser, targetUser, params, damageParam, logger)
  local bossparam = CommonFun.CalcBossParam(srcUser, targetUser, params, damageParam, logger)
  local bossparam2 = CommonFun.CalcBossParam2(srcUser, targetUser, params, damageParam, logger)
  local MDef2 = targetUser:GetProperty("MDef")
  local MDefPer2 = targetUser:GetProperty("MDefPer")
  local Vit2 = targetUser:GetProperty("Vit")
  local VitPer2 = targetUser:GetProperty("VitPer")
  local Int2 = targetUser:GetProperty("Int")
  local IntPer2 = targetUser:GetProperty("IntPer")
  local MDamReduc2 = CommonFun.calcMDamReDuc(srcUser, targetUser)
  local RefineMDamReduc = targetUser:GetProperty("RefineMDamReduc")
  local damChangePer = damageParam.damChangePer
  local BaseMAtk = Int + math.floor(Int * Int / 100)
  local MAtkFinal = ((MAtk - BaseMAtk) * (1 + MAtkPer) + BaseMAtk) * raceparam * bossparam * bossparam2
  local MDefReduc = CommonFun.CalcMDef(srcUser, targetUser)
  local index = params.hitedIndex
  local Num1 = srcUser:GetRunePoint(24020)
  local Num2 = srcUser:GetRunePoint(223016)
  local RuneDamage = (Num1 + Num2) * 0.03 + 1.1
  local skillID, skillLevel = CommonFun.UnmergeSkillID(params.skillIDAndLevel)
  local index_fs = srcUser:GetTargetNumLimit(1165)
  local index_xd = srcUser:GetTargetNumLimit(1913)
  if srcUser:HasBuffID(22000560) then
    index = math.max(index_fs, index_xd)
  end
  local JumpRatio = math.pow(RuneDamage, index)
  local DamGem = srcUser:GetGemValue(21011)
  local Fifth = 1
  if srcUser:HasBuffID(90004764) then
    Fifth = Fifth + 0.1
  end
  local A = ((MAtkFinal * MDefReduc * (1 - MDamReduc2) + MRefine) * damChangePer * (1 - RefineMDamReduc) * (1 + MDamIncrease) * CommonFun.calcMagicElement(srcUser, targetUser, params, damageParam) * elementparam2 - Vit2 / 2 * (1 + VitPer2) - Int2 * (1 + IntPer2)) * JumpRatio * (1 + DamGem / 100000) * Fifth
  if skillID == 75200 then
    RuneDamage = 1.1
    A = math.pow(RuneDamage, index) * damChangePer * CommonFun.calcMagicElement(srcUser, targetUser, params, damageParam)
  end
  if skillID == 79134 then
    local Hp = targetUser:GetProperty("Hp")
    local GetNpcID = targetUser:GetNpcID()
    if GetNpcID == 310001 or GetNpcID == 310002 or GetNpcID == 310008 or GetNpcID == 310009 or GetNpcID == 310011 or GetNpcID == 310012 or GetNpcID == 310018 or GetNpcID == 310019 then
      A = A + Hp * 0.02
    end
  end
  if A <= 1 then
    return 1
  end
  return A
end