TrailingStairs

//+------------------------------------------------------------------+
//|                                               TrailingStairs.mq4 |
//|                                                              I_D |
//|                                            http://www.mymmk.com/ |
//+------------------------------------------------------------------+
#property copyright "I_D"
#property link      "http://www.mymmk.com/ Ñîôò äëÿ óïðàâëåíèÿ êàïèòàëîì"

extern   int      iTicket;             // óíèêàëüíûé íîìåð (òèêåò) îòêðûòîé ïîçèöèè
extern   int      iTrldistance = 40;   // ðàññòîÿíèå îò òåêóùåãî êóðñà (ïóíêòîâ), íà êîòîðîì âêëþ÷àåòñÿ òðåéëèíã, ïóíêòîâ
extern   int      iTrlstep = 10;       // "øàã" èçìåíåíèÿ ñòîïëîññà (ïóíêòîâ) (íå ìåíüøå 1)

//+------------------------------------------------------------------+
//| ÒÐÅÉËÈÍà ÑÒÀÍÄÀÐÒÍÛÉ-ÑÒÓÏÅÍ×ÀÑÒÛÉ                                |
//| Ñîâåòíèêó ïåðåäà¸òñÿ òèêåò ïîçèöèè, ðàññòîÿíèå îò êóðñà îòêðûòèÿ,|
//| íà êîòîðîì òðåéëèíã çàïóñêàåòñÿ (ïóíêòîâ) è "øàã", ñ êîòîðûì îí  |
//| ïåðåíîñèòñÿ (ïóíêòîâ)                                            |
//| Ïðèìåð: ïðè +30 ñòîï íà +10, ïðè +40 - ñòîï íà +20 è ò.ä.        |
//+------------------------------------------------------------------+

//+------------------------------------------------------------------+
//| expert initialization function                                   |
//+------------------------------------------------------------------+
int init()
  {    
   return(0);
  }
  
//+------------------------------------------------------------------+
//| expert deinitialization function                                 |
//+------------------------------------------------------------------+
int deinit()
  {
   return(0);
  }
  
//+------------------------------------------------------------------+
//| expert start function                                            |
//+------------------------------------------------------------------+
int start()
  {
   TrailingStairs(iTicket,iTrldistance,iTrlstep);
   return(0);
  }
//+------------------------------------------------------------------+

void TrailingStairs(int ticket,int trldistance,int trlstep)
   { 
   
   double nextstair; // áëèæàéøåå çíà÷åíèå êóðñà, ïðè êîòîðîì áóäåì ìåíÿòü ñòîïëîññ

   // ïðîâåðÿåì ïåðåäàííûå çíà÷åíèÿ
   if ((trldistance<MarketInfo(Symbol(),MODE_STOPLEVEL)) || (trlstep<1) || (trldistance<trlstep) || (ticket==0) || (!OrderSelect(ticket,SELECT_BY_TICKET,MODE_TRADES)))
      {
      Print("Òðåéëèíã ôóíêöèåé TrailingStairs() íåâîçìîæåí èç-çà íåêîððåêòíîñòè çíà÷åíèé ïåðåäàííûõ åé àðãóìåíòîâ.");
      return(0);
      } 
   
   // åñëè äëèííàÿ ïîçèöèÿ (OP_BUY)
   if (OrderType()==OP_BUY)
      {
      // ðàñ÷èòûâàåì, ïðè êàêîì çíà÷åíèè êóðñà ñëåäóåò ñêîððåêòèðîâàòü ñòîïëîññ
      // åñëè ñòîïëîññ íèæå îòêðûòèÿ èëè ðàâåí 0 (íå âûñòàâëåí), òî áëèæàéøèé óðîâåíü = êóðñ îòêðûòèÿ + trldistance + ñïðýä
      if ((OrderStopLoss()==0) || (OrderStopLoss()<OrderOpenPrice()))
      nextstair = OrderOpenPrice() + trldistance*Point;
         
      // èíà÷å áëèæàéøèé óðîâåíü = òåêóùèé ñòîïëîññ + trldistance + trlstep + ñïðýä
      else
      nextstair = OrderStopLoss() + trldistance*Point;

      // åñëè òåêóùèé êóðñ (Bid) >= nextstair è íîâûé ñòîïëîññ òî÷íî ëó÷øå òåêóùåãî, êîððåêòèðóåì ïîñëåäíèé
      if (Bid>=nextstair)
         {
         if ((OrderStopLoss()==0) || (OrderStopLoss()<OrderOpenPrice()) && (OrderOpenPrice() + trlstep*Point<Bid-MarketInfo(Symbol(),MODE_STOPLEVEL)*Point)) 
            {
            if (!OrderModify(ticket,OrderOpenPrice(),OrderOpenPrice() + trlstep*Point,OrderTakeProfit(),OrderExpiration()))
            Print("Íå óäàëîñü ìîäèôèöèðîâàòü ñòîïëîññ îðäåðà ¹",OrderTicket(),". Îøèáêà: ",GetLastError());
            }
         }
      else
         {
         if (!OrderModify(ticket,OrderOpenPrice(),OrderStopLoss() + trlstep*Point,OrderTakeProfit(),OrderExpiration()))
         Print("Íå óäàëîñü ìîäèôèöèðîâàòü ñòîïëîññ îðäåðà ¹",OrderTicket(),". Îøèáêà: ",GetLastError());
         }
      }
      
   // åñëè êîðîòêàÿ ïîçèöèÿ (OP_SELL)
   if (OrderType()==OP_SELL)
      { 
      // ðàñ÷èòûâàåì, ïðè êàêîì çíà÷åíèè êóðñà ñëåäóåò ñêîððåêòèðîâàòü ñòîïëîññ
      // åñëè ñòîïëîññ íèæå îòêðûòèÿ èëè ðàâåí 0 (íå âûñòàâëåí), òî áëèæàéøèé óðîâåíü = êóðñ îòêðûòèÿ + trldistance + ñïðýä
      if ((OrderStopLoss()==0) || (OrderStopLoss()>OrderOpenPrice()))
      nextstair = OrderOpenPrice() - (trldistance + MarketInfo(Symbol(),MODE_SPREAD))*Point;
      
      // èíà÷å áëèæàéøèé óðîâåíü = òåêóùèé ñòîïëîññ + trldistance + trlstep + ñïðýä
      else
      nextstair = OrderStopLoss() - (trldistance + MarketInfo(Symbol(),MODE_SPREAD))*Point;
       
      // åñëè òåêóùèé êóðñ (Àñê) >= nextstair è íîâûé ñòîïëîññ òî÷íî ëó÷øå òåêóùåãî, êîððåêòèðóåì ïîñëåäíèé
      if (Ask<=nextstair)
         {
         if ((OrderStopLoss()==0) || (OrderStopLoss()>OrderOpenPrice()) && (OrderOpenPrice() - (trlstep + MarketInfo(Symbol(),MODE_SPREAD))*Point>Ask+MarketInfo(Symbol(),MODE_STOPLEVEL)*Point))
            {
            if (!OrderModify(ticket,OrderOpenPrice(),OrderOpenPrice() - (trlstep + MarketInfo(Symbol(),MODE_SPREAD))*Point,OrderTakeProfit(),OrderExpiration()))
            Print("Íå óäàëîñü ìîäèôèöèðîâàòü ñòîïëîññ îðäåðà ¹",OrderTicket(),". Îøèáêà: ",GetLastError());
            }
         }
      else
         {
         if (!OrderModify(ticket,OrderOpenPrice(),OrderStopLoss()- (trlstep + MarketInfo(Symbol(),MODE_SPREAD))*Point,OrderTakeProfit(),OrderExpiration()))
         Print("Íå óäàëîñü ìîäèôèöèðîâàòü ñòîïëîññ îðäåðà ¹",OrderTicket(),". Îøèáêà: ",GetLastError());
         }
      }      
   }
//+------------------------------------------------------------------+