Acid Demonstration

function CommonFun.calcBuff_2420(srcUser, targetUser, a, b, c, d, lv)
  if srcUser == nil or targetUser == nil then
    return 0
  end
  local n, m = 0, 0
  if targetUser:GetNpcID() == 0 then
    n = 1
  end
  if targetUser:GetNpcID() ~= 0 and targetUser.boss == false and targetUser.mini == false then
    m = 1
  end
  local A = a * n + b * m
  return A
end

function CommonFun.calcBuff_2445(srcUser, targetUser, a, b, c, d, lv)
  if srcUser == nil or targetUser == nil then
    return 0
  end
  local Rate = 5
  local skilllv_1 = srcUser:GetLernedSkillLevel(432)
  local skilllv_2 = srcUser:GetLernedSkillLevel(464)
  local Luk = srcUser:GetProperty("Luk")
  local Dex = srcUser:GetProperty("Dex")
  local effect = 0
  if 0 < skilllv_1 and skilllv_1 <= 10 then
    effect = 10 + 5 * skilllv_1
  elseif 10 < skilllv_1 then
    effect = 60 + (skilllv_1 - 10) * 2
  end
  Rate = 5 + math.min(effect, (Luk + Dex) / 5) / 4
  local Weapon = srcUser:GetEquipedID(7)
  if Weapon == 41545 or Weapon == 141545 or Weapon == 41567 or Weapon == 141567 then
    Rate = Rate + 5
  end
  if srcUser:HasBuffID(53370) then
    Rate = Rate + 5
  end
  local pos = 0
  if CommonFun.IsInRate(Rate, srcUser:GetRandom()) then
    pos = 7
    if 0 < skilllv_2 and CommonFun.IsInRate(skilllv_2 * 10, srcUser:GetRandom()) then
      pos = 107
    end
  end
  local A = 0
  if srcUser:HasBuffID(90004474) then
    A = Rate
  end
  return A
end

function CommonFun.calcBuff_7920(srcUser, targetUser, a, b, c, d, lv)
  if srcUser == nil or targetUser == nil then
    return 0
  end
  local A = 0
  if srcUser:HasBuffID(56080) then
    A = 100
  end
  return A
end

function CommonFun.calcDamage_13202(srcUser, targetUser, params, damageParam, logger)
  local Str = srcUser:GetProperty("Str")
  local Dex = srcUser:GetProperty("Dex")
  local Luk = srcUser:GetProperty("Luk")
  local Atk = srcUser:GetProperty("Atk")
  local AtkPer = srcUser:GetProperty("AtkPer")
  local DamIncrease = srcUser:GetProperty("DamIncrease")
  local IgnoreDef = 0
  local IgnoreDef1 = srcUser:GetProperty("IgnoreDef")
  local IgnoreDef2 = srcUser:GetProperty("IgnoreEquipDef")
  if targetUser.boss or targetUser.mini then
    IgnoreDef = IgnoreDef1
  else
    IgnoreDef = IgnoreDef1 + IgnoreDef2
  end
  if 1 <= IgnoreDef then
    IgnoreDef = 1
  end
  local Refine = srcUser:GetProperty("Refine")
  local Def2 = targetUser:GetProperty("Def")
  local DefPer2 = targetUser:GetProperty("DefPer")
  local Vit2 = targetUser:GetProperty("Vit")
  local VitPer2 = targetUser:GetProperty("VitPer")
  local DamReduc2 = CommonFun.calcDamReDuc(srcUser, targetUser)
  local RefineDamReduc = targetUser:GetProperty("RefineDamReduc")
  local damChangePer = damageParam.damChangePer
  local raceparam = CommonFun.CalcRaceParam(srcUser, targetUser, params, damageParam, logger)
  local bodyparam = CommonFun.CalcBodyParam(srcUser, targetUser, params, damageParam, logger)
  local elementparam = CommonFun.CalcElementParam(srcUser, targetUser, params, damageParam, logger)
  local bossparam = CommonFun.CalcBossParam(srcUser, targetUser, params, damageParam, logger)
  local raceparam2 = CommonFun.CalcRaceParam2(srcUser, targetUser, params, damageParam, logger)
  local bodyparam2 = CommonFun.CalcBodyParam2(srcUser, targetUser, params, damageParam, logger)
  local elementparam2 = CommonFun.CalcElementParam2(srcUser, targetUser, params, damageParam, logger)
  local bossparam2 = CommonFun.CalcBossParam2(srcUser, targetUser, params, damageParam, logger)
  local BaseAtk = Str * 2 + math.floor(Str * Str / 100) + math.floor(Dex / 5) + math.floor(Luk / 5)
  local AtkFinal = ((Atk - BaseAtk) * (1 + AtkPer) * CommonFun.ShapeCorrection(srcUser, targetUser) * bodyparam * elementparam * elementparam2 + BaseAtk) * raceparam * bossparam * bossparam2
  local DefReduc = CommonFun.CalcDef(srcUser, targetUser)
  local LongRangeDamReduc2 = targetUser:GetProperty("LongRangeDamReduc")
  local A = (AtkFinal * DefReduc * (1 - DamReduc2) + Refine) * damChangePer * (1 - RefineDamReduc) * (1 + DamIncrease - LongRangeDamReduc2) - Vit2 * (1 + VitPer2)
  local B = 0
  local skilllv_1 = srcUser:GetLernedSkillLevel(425)
  if 1 <= skilllv_1 then
    local srcAtkElement = 4
    local targetDefElement = targetUser:GetProperty("DefAttr")
    local Int = srcUser:GetProperty("Int")
    local MAtk = srcUser:GetProperty("MAtk")
    local MAtkPer = srcUser:GetProperty("MAtkPer")
    local IgnoreMDef = srcUser:GetProperty("IgnoreMDef")
    local BaseMAtk = Int + math.floor(Int * Int / 100)
    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 MDamIncrease = CommonFun.calcMDamIncrease(srcUser, targetUser)
    local RefineMDamReduc = targetUser:GetProperty("RefineMDamReduc")
    local MRefine = srcUser:GetProperty("MRefine")
    local MAtkFinal = ((MAtk - BaseMAtk) * (1 + MAtkPer) + BaseMAtk) * raceparam
    local MDefReduc = CommonFun.CalcMDef(srcUser, targetUser)
    B = (MAtkFinal * MDefReduc * (1 - MDamReduc2) + MRefine) * (skilllv_1 * 0.3 + 0.5) * (1 - RefineMDamReduc) * (1 + MDamIncrease) * CommonFun.calcMagicElement(srcUser, targetUser, params, damageParam) * elementparam2 - Vit2 / 2 * (1 + VitPer2) - Int2 * (1 + IntPer2)
  end
  if B <= 1 then
    B = 0
  end
  local Num1 = srcUser:GetRunePoint(130260)
  local RuneDamage1 = Num1 * 0.1
  local Num2 = srcUser:GetRunePoint(130170)
  local RuneDamage2 = 0
  if srcUser:IsBeingPresent(600010) == true then
    RuneDamage2 = Num2 * 0.03
  end
  local aerde = 1
  local weaponRefineLv = srcUser:GetEquipedRefineLv(7)
  if srcUser:HasBuffID(40610) or srcUser:HasBuffID(42000) then
    aerde = weaponRefineLv * 0.05 + 1
  end
  local Int8 = srcUser:GetProperty("Int")
  local Str8 = srcUser:GetProperty("Str")
  local Vit8 = srcUser:GetProperty("Vit")
  if srcUser:HasBuffID(90001883) and 119 <= Int8 and 119 <= Str8 then
    aerde = aerde + 0.1
  end
  if srcUser:HasBuffID(42000) and 119 <= Int8 and 119 <= Str8 then
    aerde = aerde + 0.1
  end
  if A + B <= 1 then
    return 1
  end
  return (A + B) * (1 + RuneDamage1 + RuneDamage2) * aerde
end