Trailing Equity Money - эксперт для MetaTrader 5

Советник начинает работу когда Equity торгового счёта достигает значения "Get started with Equity >=". После этого советник постоянно запоминает максимальное значение Equity (запоминает в переменную  m_prev_max_equity и одновременно в глобальную переменную терминала "TEM").

Как только Equity снизится на "Close all with a decrease of" от максимального значения - это сигнал к закрытию всех позиций на торговом счёте. После закрытие всех позиций советник становится на паузу: удаляет глобальную переменную терминала и больше не отслеживает Equity.

Код советника:

//+------------------------------------------------------------------+
//|                                        Trailing Equity Money.mq5 |
//|                              Copyright © 2019, Vladimir Karputov |
//|                                           http://wmua.ru/slesar/ |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2019, Vladimir Karputov"
#property link      "http://wmua.ru/slesar/"
#property version   "1.000"
/*
   barabashkakvn Trading engine 3.109
*/
#include <Trade\PositionInfo.mqh>
#include <Trade\Trade.mqh>
#include <Trade\AccountInfo.mqh>
//---
CPositionInfo  m_position;                   // object of CPositionInfo class
CTrade         m_trade;                      // object of CTrade class
CAccountInfo   m_account;                    // object of CAccountInfo class
//--- input parameters
input double   InpEquityStart    = 5000;     // Get started with Equity >=
input double   InpEquityDecrease = 300;      // Close all with a decrease of
//---
double   m_prev_max_equity;                  // previous maximum Equity
bool     m_need_close_all        = false;    // close all positions
string   m_global_variable_name  = "TEM";
bool     m_pause                 = false;
//+------------------------------------------------------------------+
//| Expert initialization function                                   |
//+------------------------------------------------------------------+
int OnInit()
  {
//---
   Print("Balance: ",DoubleToString(m_account.Balance(),2)," Equity: ",DoubleToString(m_account.Equity(),2));
   if(GlobalVariableCheck(m_global_variable_name))
      m_prev_max_equity=GlobalVariableGet(m_global_variable_name);
   else
      GlobalVariableSet(m_global_variable_name,m_account.Equity());

   if(m_pause)
      m_pause=false;
   Print("START");
//---
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+
//| Expert deinitialization function                                 |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
  {
//---

  }
//+------------------------------------------------------------------+
//| Expert tick function                                             |
//+------------------------------------------------------------------+
void OnTick()
  {
//---
   if(m_need_close_all)
     {
      if(IsPositionExists())
        {
         CloseAllPositions();
         return;
        }
      else
         m_need_close_all=false;
     }

   if(m_pause)
      return;

   if(PositionsTotal()==0)
      return;
   double current_equity=m_account.Equity();
   if(current_equity>m_prev_max_equity)
     {
      m_prev_max_equity=current_equity;
      GlobalVariableSet(m_global_variable_name,m_prev_max_equity);
      GlobalVariableDel(m_global_variable_name);
     }
   else
     {
      if(current_equity<=m_prev_max_equity-InpEquityDecrease)
        {
         m_need_close_all=true;
         m_pause=true;
         Print("PAUSE");
        }
     }
  }
//+------------------------------------------------------------------+
//| Is position exists                                               |
//+------------------------------------------------------------------+
bool IsPositionExists(void)
  {
   for(int i=PositionsTotal()-1; i>=0; i--)
      if(m_position.SelectByIndex(i)) // selects the position by index for further access to its properties
         return(true);
//---
   return(false);
  }
//+------------------------------------------------------------------+
//| Close all positions                                              |
//+------------------------------------------------------------------+
void CloseAllPositions(void)
  {
   for(int i=PositionsTotal()-1; i>=0; i--) // returns the number of current positions
      if(m_position.SelectByIndex(i)) // selects the position by index for further access to its properties
         m_trade.PositionClose(m_position.Ticket()); // close a position by the specified m_symbol
  }
//+------------------------------------------------------------------+