//+------------------------------------------------------------------+
//|                                                                  |
//| Copyright : ROMA_START                                           |
//|                                                                  |
//+------------------------------------------------------------------+

//------- ROMA------------------------------------------
extern bool   ProfitTrailing = True;  
extern int    Start          = 20;
extern int    TrailingStop   = 8;     
extern int    TrailingStep   = 2;     
extern bool   UseSound       = True;  
extern string NameFileSound  = "expert.wav";  

//+------------------------------------------------------------------+
//| expert start function                                            |
//+------------------------------------------------------------------+
void start() {
  for (int i=0; i<OrdersTotal(); i++) {
    if (OrderSelect(i, SELECT_BY_POS, MODE_TRADES)) {
      TrailingPositions();
    }
  }
}

//+------------------------------------------------------------------+
//| TRAY                                                             |
//+------------------------------------------------------------------+
void TrailingPositions() {
  double pBid, pAsk, pp;

  pp = MarketInfo(OrderSymbol(), MODE_POINT);
  if (OrderType()==OP_BUY) {
    pBid = MarketInfo(OrderSymbol(), MODE_BID);
    if (!ProfitTrailing || (pBid-OrderOpenPrice())> ((Start + TrailingStop)*pp)) {
      if (OrderStopLoss()<pBid-(TrailingStop+TrailingStep-1)*pp) {
        ModifyStopLoss(pBid-TrailingStop*pp);
        return;
      }
    }
  }
  if (OrderType()==OP_SELL) {
    pAsk = MarketInfo(OrderSymbol(), MODE_ASK);
    if (!ProfitTrailing || OrderOpenPrice()-pAsk> ((Start + TrailingStop)*pp)) {
      if (OrderStopLoss()>pAsk+(  TrailingStop+TrailingStep-1)*pp || OrderStopLoss()==0) {
        ModifyStopLoss(pAsk+TrailingStop*pp);
        return;
      }
    }
  }
}

//+------------------------------------------------------------------+
//|                                                                  |
//|                  STOPLOSS                                        |
//|                                                                  |
//+------------------------------------------------------------------+
void ModifyStopLoss(double ldStopLoss) {
  bool fm;

  fm=OrderModify(OrderTicket(),OrderOpenPrice(),ldStopLoss,OrderTakeProfit(),0,CLR_NONE);
  if (fm && UseSound) PlaySound(NameFileSound);
}
//+------------------------------------------------------------------+