//+------------------------------------------------------------------+
//|                                               Heiken299_EApk.mq4 |
//|                      Copyright © 2005, MetaQuotes Software Corp. |
//|                                       http://www.metaquotes.net/ |
//+------------------------------------------------------------------+
// edits by P. Kubitzki, fxtogo4me@yahoo.com
// 9/09/07 PK changed iCustom Heiken Ashi to Heiken_Ashi_Smoothed
// change MA200 to MA24, running on 15M MA200 is too far out
// change signal candle from 0 to 1 on HA
// 9/10/07 2:50pm KC remove all Awesome Oscillator coding, it delays entry
// 9/11/07 BUG FOUND! This EA doen't work well with others. 
// If another EA opens a trade, this EA might close it. Possibly if only in the opposite direction.
// 09/12/07 added Magic Number coding when checking for close to fix former bug
//
// Edits by Robert Hill
// 9/15/07 Added code for trading sessions
//         Added code to check if last trade stopped out for delay of trading


#define MAGICMA  20050000

extern double Lots               = 0.1;
extern double MaximumRisk        = 0.5;
extern double TakeProfit = 2000; //TakeProfit in not really used, it closes at reverse direction
extern double TrailingStop = 0;
extern double Stoploss = 70; //changed from 60
extern double risk = 2; // changed from 10%
double lotMM;

extern string  sm0="--Trading Hours Filter--";
extern string  sm1=" Times are Broker Chart times";
extern string  sm2="UseTradingHours - Enter 0 for false, 1 for true";
extern int     UseTradingHours = 0;
extern string  sm3="Trade Session 1 - Enter 0 for false, 1 for true";
extern int    TradeSession1 = 1;
extern int     Session1Start = 2200;       // Start trades after time
extern int     Session1Stop = 100;      // Stop trading after time
extern string  sm4="Trade Session 2 - Enter 0 for false, 1 for true";
extern int    TradeSession2 = 1;
extern int     Session2Start = 400;       // Start trades after time
extern int     Session2Stop = 600;      // Stop trading after time
extern string  sm5="Trade Session 3 - Enter 0 for false, 1 for true";
extern int    TradeSession3 = 0;
extern int     Session3Start = 700;       // Start trades after time
extern int     Session3Stop = 900;      // Stop trading after time
extern string  sm6="Trade Session 4 - Enter 0 for false, 1 for true";
extern int    TradeSession4 = 0;
extern int     Session4Start = 1330;       // Start trades after time
extern int     Session4Stop = 1500;      // Stop trading after time
extern string  sm7="Trade Session 5 - Enter 0 for false, 1 for true";
extern int    TradeSession5 = 0;
extern int     Session5Start = 1700;       // Start trades after time
extern int     Session5Stop = 1900;      // Stop trading after time

extern string  hd = " --Delay time--";
extern int     useDelay = 1;
extern int     useDelayAfterWin = 1;
extern int     MinutesToDelay = 180;

bool     YesStop;
datetime StopTime;                 // Time to wait after a trade is stopped out
bool StoppedOut=false;

int init()
{
   return(0);
}

int deinit()
{
   return(0);
}
//+------------------------------------------------------------------+
//| Calculate open positions                                         |
//+------------------------------------------------------------------+
int CalculateCurrentOrders(string symbol)
  {
   int buys=0,sells=0;
//----
   for(int i=0;i<OrdersTotal();i++)
     {
      if(OrderSelect(i,SELECT_BY_POS,MODE_TRADES)==false) break;
//      if(OrderSymbol()==Symbol() && OrderMagicNumber()==MAGICMA)

// Since you pass the Symbol() you can use this

      if(OrderSymbol()==symbol && OrderMagicNumber()==MAGICMA)
        {
         if(OrderType()==OP_BUY)  buys++;
         if(OrderType()==OP_SELL) sells++;
        }
     }
//---- return orders volume
   if(buys>0) return(buys);
   else       return(-sells);
  }
// =================================================================================
// PYRAMIDING - LINEAR
// Money Management risk exposure compounding
// =================================================================================
   
  
//+------------------------------------------------------------------+
//| Check Heikin Ashi for buy or sell signal                         |
//| Use OP_BUY to check for enter buy or exit sell                   |
//| Use OP_SELL to check for enter sell or exit buy                  |
//| Changes by Robert                                                |
//|  Added passing of boolean to determine check of                  |
//|  Bid < HA1 for Sell                                              |
//|  Bid > HA1 for Buy                                               |
//|  Modified code for faster backtesting                            |
//|  The checks are still done correctly                             |
//|  The iCustom call is only done when needed                       |
//+------------------------------------------------------------------+

bool CheckHeikenAshi(int cmd, bool checkBid)
{
   bool rule1;
   double HA0, HA1, HA2, HA3;
   
   HA1 = iCustom(NULL,0,"Heiken_Ashi_Smoothed",1,1);
   if (cmd == OP_SELL)
   {
     rule1 = true;
     if (checkBid == true)
     {
       if (Bid > HA1) rule1 = false;  // reverse check for failure
     }
     
     if (rule1 == true)
     {
       HA0 = iCustom(NULL,0,"Heiken_Ashi_Smoothed",0,1);
       if (HA1 < HA0)
       {
         HA2 = iCustom(NULL,0,"Heiken_Ashi_Smoothed",2,1);
         HA3 = iCustom(NULL,0,"Heiken_Ashi_Smoothed",3,1);
         if (HA2 > HA3) return(true);
       }
     }
   }
   if (cmd == OP_BUY)
   {
      rule1 = true;
     if (checkBid == true)
     {
       if (Bid < HA1) rule1 = false;  // reverse check for failure
     }
     
     if (rule1 == true)
     {
       HA0 = iCustom(NULL,0,"Heiken_Ashi_Smoothed",0,1);
       if (HA1 > HA0)
       {
         HA2 = iCustom(NULL,0,"Heiken_Ashi_Smoothed",2,1);
         HA3 = iCustom(NULL,0,"Heiken_Ashi_Smoothed",3,1);
         if (HA2 < HA3) return(true);
       }
     }
   }
   return(false);
   
}


//+------------------------------------------------------------------+
//| Check for open order conditions                                  |
//+------------------------------------------------------------------+
void CheckForOpen()
  {
   int    res;
   
// Use Variables for speed
// Same values are used to check buy or sell so no need to get values twice
// also easier to read

//  double HA0, HA1, HA2, HA3;  // delete this line if you use CheckHeikenAshi function
   double Close1, MA24; //, AO;
   
   Close1 = Close[1];
//   MA200 = iMA(NULL,0,200,0,MODE_EMA,PRICE_CLOSE,0); previous
   MA24 = iMA(NULL,0,24,0,MODE_EMA,PRICE_CLOSE,1);
//   Comment ("\nUSE ON ANY CHART TIMEFRAME","\nEMA24[1] = ",MA24,"\nHA1: High of Blue OR Low of Red HA Candle","\nHA1 = ",HA1);

//   AO = iAO(NULL,0,0);
   
   
//---- sell conditions
//  if (CheckHeikenAshi(OP_SELL) && Close1 < MA24 && Bid < HA1) // && AO < 0) // Function version
// Change by Robert
// Also changed checks for speed of backtest
  if (Close1 < MA24) // && AO < 0) // If this is true then check HeikenAshi
  {
     // may need to change Bid< HA1 to Bid < Low[1] PK
     // If this change is made then modify the CheckHeikenAshi function to not check against HA1
  
     // if (HA2 > HA3 && HA1 < HA0 && Close1 < MA200 && AO < 0)
     if (CheckHeikenAshi(OP_SELL, true)) // && AO < 0) // New Function version
     {
      res=OrderSend(Symbol(),OP_SELL,MathCeil(AccountBalance() * risk / 100000),Bid,1,Bid+Stoploss*Point,Bid-TakeProfit*Point,"",MAGICMA,0,Red);
      return;
     }
  }
//---- buy conditions
//  if (CheckHeikenAshi(OP_BUY) && Close1 > MA24 && Bid > HA1) // && AO > 0)  // Function version
// Change by Robert
  if (Close1 > MA24) // && AO > 0)  // If this is true then check HeikenAshi
  {
       // may need to change Bid > HA1 to Bid > High[1] PK
       // If this change is made then modify the CheckHeikenAshi function to not check against HA1

       // if (HA2 < HA3 && HA1 > HA0 && Close1 > MA200 && AO > 0)
     if (CheckHeikenAshi(OP_BUY, true)) // && AO > 0)  // New Function version
     {
      res=OrderSend(Symbol(),OP_BUY,MathCeil(AccountBalance() * risk / 100000),Ask,1,Ask-Stoploss*Point,Ask+TakeProfit*Point,"",MAGICMA,0,Blue);
      return;
     }
  }
//----
}
  
//+------------------------------------------------------------------+
//| Check for close order conditions                                 |
//+------------------------------------------------------------------+
void CheckForClose()
  {
// Use Variables for speed
// Same values are used to check close buy or close sell so no need to get values twice
// also easier to read
//   double HA0, HA1, HA2, HA3, MA24;  // delete this line if you use CheckHeikenAshi function
   
//   HA0 = iCustom(NULL,0,"Heiken_Ashi_Smoothed",0,1);  // delete this line if you use CheckHeikenAshi function
//   HA1 = iCustom(NULL,0,"Heiken_Ashi_Smoothed",1,1);  // delete this line if you use CheckHeikenAshi function
//   HA2 = iCustom(NULL,0,"Heiken_Ashi_Smoothed",2,1);  // delete this line if you use CheckHeikenAshi function
//   HA3 = iCustom(NULL,0,"Heiken_Ashi_Smoothed",3,1);  // delete this line if you use CheckHeikenAshi function
//   MA24 = iMA(NULL,0,24,0,MODE_EMA,PRICE_CLOSE,1);
//   Comment ("\nUSE ON ANY CHART TIMEFRAME","\nEMA24[1] = ",MA24,"\nHA1: High of Blue OR Low of Red HA Candle","\nHA1 = ",HA1);
//----
   for(int i=0;i<OrdersTotal();i++)
     {
      OrderSelect(i, SELECT_BY_POS, MODE_TRADES);
      if(OrderType()<=OP_SELL &&   // check for opened position 
         OrderSymbol()==Symbol() &&  // check for symbol
         OrderMagicNumber()==MAGICMA) // Check Magic Number
        {
         if(OrderType()==OP_BUY)   // long position is opened
           {
            // should it be closed?
          if (CheckHeikenAshi(OP_SELL, false)) // Function version check Sell condition to exit Buy
        //    if(HA2 > HA3 && HA1 < HA0)
                {
                 OrderClose(OrderTicket(),OrderLots(),Bid,1,Violet); // close position
                 return(0); // exit
                }
            // check for trailing stop
            if(TrailingStop>0)  
              {                 
               if(Bid-OrderOpenPrice()>Point*TrailingStop)
                 {
                  if(OrderStopLoss()<Bid-Point*TrailingStop)
                    {
                     OrderModify(OrderTicket(),OrderOpenPrice(),Bid-Point*TrailingStop,OrderTakeProfit(),0,Green);
                     return(0);
                    }
                 }
              }
           }
         else // go to short position
           {
            // should it be closed?
         if (CheckHeikenAshi(OP_BUY, false)) // Function version check Buy condition to exit Sell
       //     if (HA2 < HA3 && HA0 > HA1)
              {
               OrderClose(OrderTicket(),OrderLots(),Ask,1,Violet); // close position
               return(0); // exit
              }
            // check for trailing stop
            if(TrailingStop>0)  
              {                 
               if((OrderOpenPrice()-Ask)>(Point*TrailingStop))
                 {
                  if((OrderStopLoss()>(Ask+Point*TrailingStop)) || (OrderStopLoss()==0))
                    {
                     OrderModify(OrderTicket(),OrderOpenPrice(),Ask+Point*TrailingStop,OrderTakeProfit(),0,Red);
                     return(0);
                    }
                 }
              }
           }
        }
     }
   return(0);
  }

// Return true if time is not in session for trading
bool CheckOutsideSession(int SessionStart, int SessionStop, int ct)
{

   if (SessionStart < SessionStop)
   {
     if (ct >= SessionStart && ct <= SessionStop) return (false); else return(true);
   }
   else
   {
      if (ct > SessionStop && ct < SessionStart) return (true); else return(false);
   }
}

bool CheckTradingTimes()
{
   bool StopTrading;
   int ct;
   ct = Hour() * 100 + Minute();
   
     StopTrading = true;

     if (TradeSession1 == 1)
     {
        StopTrading = CheckOutsideSession(Session1Start, Session1Stop, ct);
     }
     if (StopTrading == true)
     {

       if (TradeSession2 == 1)
       {
         StopTrading = CheckOutsideSession(Session2Start, Session2Stop, ct);
       }
     }
     if (StopTrading == true)
     {

       if (TradeSession3 == 1)
       {
         StopTrading = CheckOutsideSession(Session3Start, Session3Stop, ct);
       }
     }
     if (StopTrading == true)
     {

       if (TradeSession4 == 1)
       {
         StopTrading = CheckOutsideSession(Session4Start, Session4Stop, ct);
       }
     }
     if (StopTrading == true)
     {

       if (TradeSession5 == 1)
       {
         StopTrading = CheckOutsideSession(Session5Start, Session5Stop, ct);
       }
     }
     
     return(StopTrading);
}

//+------------------------------------------------------------------+
//| LastTradeStoppedOut                                              |
//| Check History to see if last trade stopped out                   |
//| Return Time for next trade                                       |
//+------------------------------------------------------------------+
  
datetime LastTradeStoppedOut()
{
   int cnt, total;
   datetime NextTime;
   bool Stopped;
   
   NextTime = 0;
   
   total = HistoryTotal();
   for (cnt = total - 1; cnt >= 0; cnt--)
   {
      OrderSelect (cnt, SELECT_BY_POS, MODE_HISTORY);
      
      if(OrderSymbol()==Symbol() && OrderMagicNumber() == MAGICMA)
      {
        Stopped = false;
        if (OrderType() == OP_BUY)
        {
          if (OrderClosePrice() - OrderOpenPrice() < 0)
          {
             Stopped = true;
          }
          if(useDelayAfterWin == 1) Stopped = true;
          cnt = 0;
        }
        if (OrderType() == OP_SELL)
        {
          if (OrderOpenPrice() - OrderClosePrice() < 0)
          {
             Stopped = true;
          }
          if(useDelayAfterWin == 1) Stopped = true;
          cnt = 0;
        }
      }
   }
   
   if (Stopped)
   {
      StopTime = OrderCloseTime() + MinutesToDelay*60;
   }
   
   return (Stopped);
}

// the end.
//----

//+------------------------------------------------------------------+
//| Start function                                                   |
//+------------------------------------------------------------------+
void start()
  {
  
//---- check for history and trading
   if(Bars<100 || IsTradeAllowed()==false) return;
//---- calculate open orders by current symbol
   if(CalculateCurrentOrders(Symbol())==0)
   {
//+------------------------------------------------------------------+
//| Check if OK to make new trades                                   |
//+------------------------------------------------------------------+

// Check if last trade stopped out

   if (useDelay == 1)
   {
     StoppedOut = LastTradeStoppedOut();
     if  (CurTime() < StopTime)
     {
//    Comment("No Trades Until : " + TimeToStr(StopTime,TIME_DATE|TIME_MINUTES));
      return(0);
     }
   }
     YesStop = false;
     if (UseTradingHours == 1)
     {
        YesStop = CheckTradingTimes();
   
        if (YesStop == true)
        {
          Comment ("Trading has been stopped - wrong time of day");
        }
        else
        {
          Comment ("Trading has resumed - time is OK");
        }
     }
     if (YesStop == false) CheckForOpen();
   }
   else CheckForClose();
//----
  }
//+--------------------------------------------------------------