//+------------------------------------------------------------------+
//|                                                    EMA_CROSS.mq4 |
//|                                                      Coders Guru |
//|                                         http://www.forex-tsd.com |
//+------------------------------------------------------------------+
//+------------------------------------------------------------------+
//| TODO: Add Money Management routine                               |
//+------------------------------------------------------------------+
#property copyright "Coders Guru"
#property link      "http://www.forex-tsd.com"
//---- input parameters
extern double    TakeProfit=130;
extern double    StopLoss = 100;
extern double    Lots=1;
extern double    TrailingStop=20;
extern int ShortEma = 12;
extern int LongEma = 20;
//+------------------------------------------------------------------+
//| expert initialization function                                   |
//+------------------------------------------------------------------+
int init()
  {
//---- 
   
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| expert deinitialization function                                 |
//+------------------------------------------------------------------+
int deinit()
  {
//---- 
   
//----
   return(0);
  }
int Crossed (double line1 , double line2)
   {
      static int last_direction = 0;
      static int current_direction = 0;
      
      //Don't work in the first load, wait for the first cross!
      static bool first_time = true;
      if(first_time == true)
      {
         first_time = false;
         return (0);
      }
      
      if(line1>line2)current_direction = 1; //up
      if(line1<line2)current_direction = 2; //down
      if(current_direction != last_direction) //changed 
      {
            last_direction = current_direction;
            return (last_direction);
      }
      else
      {
            return (0); //not changed
      }
   }
//+------------------------------------------------------------------+
//| expert start function                                            |
//+------------------------------------------------------------------+
int start()
  {
//---- 
   int cnt, ticket, total;
   double SEma, LEma;
   
   
   if(Bars<100)
     {
      Print("bars less than 100");
      return(0);  
     }
   if(TakeProfit<10)
     {
      Print("TakeProfit less than 10");
      return(0);  // check TakeProfit
     }
        
   SEma = iMA(NULL,0,ShortEma,0,MODE_EMA,PRICE_CLOSE,0);
   LEma = iMA(NULL,0,LongEma,0,MODE_EMA,PRICE_CLOSE,0);
   
   
   static int isCrossed  = 0;
   isCrossed = Crossed (LEma,SEma);
   
   total  = OrdersTotal(); 
   if(total < 1) 
     {
       if(isCrossed == 1)
         {
            //ticket=OrderSend(Symbol(),OP_BUY,Lots,Ask,3,0,Ask+TakeProfit*Point,"EMA_CROSS",12345,0,Green);
            ticket=OrderSend(Symbol(),OP_BUY,Lots,Ask,3,Ask-StopLoss*Point,Ask+TakeProfit*Point,"EMA_CROSS",12345,0,Green);
            if(ticket>0)
              {
               if(OrderSelect(ticket,SELECT_BY_TICKET,MODE_TRADES)) Print("BUY order opened : ",OrderOpenPrice());
              }
            else Print("Error opening BUY order : ",GetLastError()); 
            return(0);
         }
         if(isCrossed == 2)
         {
            //ticket=OrderSend(Symbol(),OP_SELL,Lots,Bid,3,0,Bid-TakeProfit*Point,"EMA_CROSS",12345,0,Red);
            ticket=OrderSend(Symbol(),OP_SELL,Lots,Bid,3,Bid+StopLoss*Point,Bid-TakeProfit*Point,"EMA_CROSS",12345,0,Red);
            if(ticket>0)
              {
               if(OrderSelect(ticket,SELECT_BY_TICKET,MODE_TRADES)) Print("SELL order opened : ",OrderOpenPrice());
              }
            else Print("Error opening SELL order : ",GetLastError()); 
            return(0);
         }
         return(0);
     }
     
   for(cnt=0;cnt<total;cnt++)
     {
      OrderSelect(cnt, SELECT_BY_POS, MODE_TRADES);
      //OrderPrint();
      if(OrderType()<=OP_SELL && OrderSymbol()==Symbol())
        {
         if(OrderType()==OP_BUY)   // long position is opened
           {
            // should it be closed?
           
           /* REMOVED - Trailling stop only close
           if(isCrossed == 2)
                {
                 OrderClose(OrderTicket(),OrderLots(),Bid,3,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?
            
            /* REMOVED - Trailling stop only close
            if(isCrossed == 1)
              {
               OrderClose(OrderTicket(),OrderLots(),Ask,3,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);
  }
//+------------------------------------------------------------------+