CommonFun.CalcBossParam

function CommonFun.CalcBossParam(srcUser, targetUser, params, damageParam, logger)
  local bossInc = 0
  local NpcDamPer = 0
  local MonsterDamPer = 0
  local NpcResPer = 0
  if targetUser:GetNpcID() == 0 then
    NpcDamPer = srcUser:GetProperty("NpcDamPer")
    NpcResPer = targetUser:GetProperty("NpcResPer")
  end
  if targetUser.boss or targetUser.mini then
    bossInc = srcUser:GetProperty("BossDamPer")
  end
  if targetUser.boss == false and targetUser.mini == false and targetUser:GetNpcID() ~= 0 then
    MonsterDamPer = srcUser:GetProperty("MonsterDamPer")
  end
  local A = (1 + bossInc) * (1 + NpcDamPer - NpcResPer) * (1 + MonsterDamPer)
  if A <= 0.15 then
    A = 0.15
  end
  return A
end