//+------------------------------------------------------------------+
//|                                                          MBA.mq4 |
//|                                              Copyright 2021, AM2 |
//|                                      http://www.forexsystems.biz |
//+------------------------------------------------------------------+
#property copyright "Copyright 2021, AM2"
#property link      "http://www.forexsystems.biz"
#property version   "1.00"
#property strict

//--- Inputs
extern double Lots       = 0.1;      // лот
extern double KLot       = 2;        // умножение лота
extern double MaxLot     = 5;        // максимальный лот

extern double Loss       = 50;       // лось в процентах
extern double Profit     = 0.2;      // язь в процентах

extern int StopLoss      = 0;        // лось
extern int TakeProfit    = 0;        // язь
extern int Slip          = 30;       // реквот
extern int Shift         = 1;        // бар индикатора
extern int Magic         = 123;      // магик

extern string IndName    = "MBA";

datetime t=0;
//+------------------------------------------------------------------+
//| Expert initialization function                                   |
//+------------------------------------------------------------------+
int OnInit()
  {
//---

   Comment("");
//---
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+
//| Expert deinitialization function                                 |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
  {
   Comment("");
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void PutOrder(int type,double price)
  {
   int r=0;
   color clr=Green;
   double sl=0,tp=0;

   if(type==1 || type==3 || type==5)
     {
      clr=Red;
      if(StopLoss>0)
         sl=NormalizeDouble(price+StopLoss*_Point,_Digits);
      if(TakeProfit>0)
         tp=NormalizeDouble(price-TakeProfit*_Point,_Digits);
     }

   if(type==0 || type==2 || type==4)
     {
      clr=Blue;
      if(StopLoss>0)
         sl=NormalizeDouble(price-StopLoss*_Point,_Digits);
      if(TakeProfit>0)
         tp=NormalizeDouble(price+TakeProfit*_Point,_Digits);
     }

   r=OrderSend(NULL,type,Lot(),NormalizeDouble(price,_Digits),Slip,sl,tp,"",Magic,0,clr);
   return;
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
double Lot()
  {
   double lot=Lots;
   if(CountTrades()>0)
      lot=NormalizeDouble(Lots*MathPow(KLot,CountTrades()),2);
   if(lot>MaxLot)
      lot=Lots;
   return(lot);
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
int CountTrades()
  {
   int count=0;
   for(int i=OrdersTotal()-1; i>=0; i--)
     {
      if(OrderSelect(i,SELECT_BY_POS,MODE_TRADES))
        {
         if(OrderSymbol()==Symbol() && OrderMagicNumber()==Magic)
           {
            if(OrderType()<2)
               count++;
           }
        }
     }
   return(count);
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void CloseAll(int ot=-1)
  {
   bool cl;
   for(int i=OrdersTotal()-1; i>=0; i--)
     {
      if(OrderSelect(i,SELECT_BY_POS,MODE_TRADES))
        {
         if(OrderSymbol()==Symbol() && OrderMagicNumber()==Magic)
           {
            if(OrderType()==0 && (ot==0 || ot==-1))
              {
               RefreshRates();
               cl=OrderClose(OrderTicket(),OrderLots(),NormalizeDouble(Bid,_Digits),Slip,White);
              }
            if(OrderType()==1 && (ot==1 || ot==-1))
              {
               RefreshRates();
               cl=OrderClose(OrderTicket(),OrderLots(),NormalizeDouble(Ask,_Digits),Slip,White);
              }
           }
        }
     }
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
double Pro()
  {
   double pro=(AccountEquity()-AccountBalance())/AccountBalance()*100;//(1100-1000)/1000
   return(pro);
  }
//+------------------------------------------------------------------+
//| Expert tick function                                             |
//+------------------------------------------------------------------+
void OnTick()
  {
   double op1 = iCustom(NULL,0,IndName,0,Shift);
   double cl1 = iCustom(NULL,0,IndName,1,Shift);

   double op2 = iCustom(NULL,0,IndName,0,Shift+1);
   double cl2 = iCustom(NULL,0,IndName,1,Shift+1);

   if(t!=Time[0])
     {
      if(cl1<op1 && cl2>op2)
        {
         PutOrder(0,Ask);
        }

      if(cl1>op1 && cl2<op2)
        {
         PutOrder(1,Bid);
        }
      t=Time[0];
     }

   if(Pro()>Profit || Pro()<-Loss)
      CloseAll();

   Comment("\n Profit: ",Pro());
  }
//+------------------------------------------------------------------+