//+------------------------------------------------------------------+
//|                                        AddOnOrdersManagement.mqh |
//|                                                        Jay Davis |
//|                                                 512jay.github.io |
//+------------------------------------------------------------------+
#property copyright "Jay Davis"
#property link      "512jay.github.io"
#property version   "1.0"

input group ""
input group "|----------Add On Orders Settings----------|"
input group "||--- Buy Addons"
input double BuyAddOnAtPercentage = 0;  // BUY Add-on at Percentage, 0 - Off
input double BuyLotSizeMultiplier = 1;  // BUY Lot Size Multiplier;
input int    BuysInSeries = 1; // Number of BUYS in Series, 0 - Unlimited
input group "||--- Sell Addons"
input double SellAddOnAtPercentage = 0;    // SELL Add-on at Percentage, 0 -Off
input double SellLotSizeMultiplier = 1; // SELL Lot Size Multiplier;
input int SellsInSeries = 1; // Number of SELLS in Series, 0 - Unlimited

//+------------------------------------------------------------------+
//| Implements a new trade at given percentage                       |
//+------------------------------------------------------------------+
void AddOnPercentageTradeCheck()
  {
  int size = ArraySize(Virt);
   double issueNewTradeAtPercentage;
   if(DirectionToTrade == ORDER_TYPE_BUY)
      issueNewTradeAtPercentage = BuyAddOnAtPercentage;
   else
      issueNewTradeAtPercentage = SellAddOnAtPercentage;

   if(issueNewTradeAtPercentage == 0)
      return;

   double Curr = iClose(_Symbol, PERIOD_CURRENT, 0);
   if(Virt[size - 1].request.type == ORDER_TYPE_BUY && Curr >
      (MostRecentOpenedPrice + MostRecentOpenedPrice * issueNewTradeAtPercentage / 100)
      && (SeriesOrderNumber  < BuysInSeries || BuysInSeries == 0))
     {
      VirtualBuy(Virt, LotSizer(Buy), _Symbol, SymbolInfoDouble(_Symbol, SYMBOL_BID),
                 GetStopLoss(_Symbol, ORDER_TYPE_BUY, false),
                 0, "%+ Buy #" + (string)(SeriesOrderNumber + 1));
      if(trade.Buy(LotSizer(Buy), NULL, 0, 0, 0,
                   "%+ Buy #" + (string)(SeriesOrderNumber + 1)))
         Virt[ArraySize(Virt) - 1].request.order = trade.ResultOrder();
      MostRecentOpenedPrice = Curr;
      SeriesOrderNumber++;
      TimeStopLossWasLastModified = TimeCurrent();
     }
   if(Virt[size - 1].request.type == ORDER_TYPE_SELL && Curr < MostRecentOpenedPrice -
      MostRecentOpenedPrice * issueNewTradeAtPercentage / 100
      && (SeriesOrderNumber < SellsInSeries || SellsInSeries == 0))
     {
      VirtualSell(Virt, LotSizer(Sell), _Symbol, SymbolInfoDouble(_Symbol, SYMBOL_ASK),
                  GetStopLoss(_Symbol, ORDER_TYPE_SELL, false),
                  0, "%+ Sell #" + (string)(SeriesOrderNumber + 1));
      if(trade.Sell(LotSizer(Sell), NULL, 0, 0, 0,
                    "%+ Sell # " + (string)(SeriesOrderNumber + 1)))
         Virt[ArraySize(Virt) - 1].request.order = trade.ResultOrder();
      MostRecentOpenedPrice = Curr;
      SeriesOrderNumber++;
      TimeStopLossWasLastModified = TimeCurrent();
     }
  }
//+------------------------------------------------------------------+