//+------------------------------------------------------------------+
//| Moving Averages.mq5 |
//| Copyright 2009-2017, MetaQuotes Software Corp. |
//| http://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2009-2017, MetaQuotes Software Corp."
#property link "http://www.mql5.com"
#property version "1.00"
#include <Trade\Trade.mqh>
input double MaximumRisk = 0.02; // Maximum Risk in percentage
input double DecreaseFactor = 3; // Descrease factor
input int MovingPeriod = 12; // Moving Average period
input int MovingShift = 6; // Moving Average shift
//---
int ExtHandle=0;
bool ExtHedging=false;
CTrade ExtTrade;
#define MA_MAGIC 1234501
//+------------------------------------------------------------------+
//| Calculate optimal lot size |
//+------------------------------------------------------------------+
double TradeSizeOptimized(void)
{
double price=0.0;
double margin=0.0;
//--- select lot size
if(!SymbolInfoDouble(_Symbol,SYMBOL_ASK,price))
return(0.0);
if(!OrderCalcMargin(ORDER_TYPE_BUY,_Symbol,1.0,price,margin))
return(0.0);
if(margin<=0.0)
return(0.0);
double lot=NormalizeDouble(AccountInfoDouble(ACCOUNT_MARGIN_FREE)*MaximumRisk/margin,2);
//--- calculate number of losses orders without a break
if(DecreaseFactor>0)
{
//--- select history for access
HistorySelect(0,TimeCurrent());
//---
int orders=HistoryDealsTotal(); // total history deals
int losses=0; // number of losses orders without a break
for(int i=orders-1;i>=0;i--)
{
ulong ticket=HistoryDealGetTicket(i);
if(ticket==0)
{
Print("HistoryDealGetTicket failed, no trade history");
break;
}
//--- check symbol
if(HistoryDealGetString(ticket,DEAL_SYMBOL)!=_Symbol)
continue;
//--- check Expert Magic number
if(HistoryDealGetInteger(ticket,DEAL_MAGIC)!=MA_MAGIC)
continue;
//--- check profit
double profit=HistoryDealGetDouble(ticket,DEAL_PROFIT);
if(profit>0.0)
break;
if(profit<0.0)
losses++;
}
//---
if(losses>1)
lot=NormalizeDouble(lot-lot*losses/DecreaseFactor,1);
}
//--- normalize and check limits
double stepvol=SymbolInfoDouble(_Symbol,SYMBOL_VOLUME_STEP);
lot=stepvol*NormalizeDouble(lot/stepvol,0);
double minvol=SymbolInfoDouble(_Symbol,SYMBOL_VOLUME_MIN);
if(lot<minvol)
lot=minvol;
double maxvol=SymbolInfoDouble(_Symbol,SYMBOL_VOLUME_MAX);
if(lot>maxvol)
lot=maxvol;
//--- return trading volume
return(lot);
}
//+------------------------------------------------------------------+
//| Check for open position conditions |
//+------------------------------------------------------------------+
void CheckForOpen(void)
{
MqlRates rt[2];
//--- go trading only for first ticks of new bar
if(CopyRates(_Symbol,_Period,0,2,rt)!=2)
{
Print("CopyRates of ",_Symbol," failed, no history");
return;
}
if(rt[1].tick_volume>1)
return;
//--- get current Moving Average
double ma[1];
if(CopyBuffer(ExtHandle,0,0,1,ma)!=1)
{
Print("CopyBuffer from iMA failed, no data");
return;
}
//--- check signals
ENUM_ORDER_TYPE signal=WRONG_VALUE;
if(rt[0].open>ma[0] && rt[0].close<ma[0])
signal=ORDER_TYPE_SELL; // sell conditions
else
{
if(rt[0].open<ma[0] && rt[0].close>ma[0])
signal=ORDER_TYPE_BUY; // buy conditions
}
//--- additional checking
if(signal!=WRONG_VALUE)
{
if(TerminalInfoInteger(TERMINAL_TRADE_ALLOWED) && Bars(_Symbol,_Period)>100)
ExtTrade.PositionOpen(_Symbol,signal,TradeSizeOptimized(),
SymbolInfoDouble(_Symbol,signal==ORDER_TYPE_SELL ? SYMBOL_BID:SYMBOL_ASK),
0,0);
}
//---
}
//+------------------------------------------------------------------+
//| Check for close position conditions |
//+------------------------------------------------------------------+
void CheckForClose(void)
{
MqlRates rt[2];
//--- go trading only for first ticks of new bar
if(CopyRates(_Symbol,_Period,0,2,rt)!=2)
{
Print("CopyRates of ",_Symbol," failed, no history");
return;
}
if(rt[1].tick_volume>1)
return;
//--- get current Moving Average
double ma[1];
if(CopyBuffer(ExtHandle,0,0,1,ma)!=1)
{
Print("CopyBuffer from iMA failed, no data");
return;
}
//--- positions already selected before
bool signal=false;
long type=PositionGetInteger(POSITION_TYPE);
if(type==(long)POSITION_TYPE_BUY && rt[0].open>ma[0] && rt[0].close<ma[0])
signal=true;
if(type==(long)POSITION_TYPE_SELL && rt[0].open<ma[0] && rt[0].close>ma[0])
signal=true;
//--- additional checking
if(signal)
{
if(TerminalInfoInteger(TERMINAL_TRADE_ALLOWED) && Bars(_Symbol,_Period)>100)
ExtTrade.PositionClose(_Symbol,3);
}
//---
}
//+------------------------------------------------------------------+
//| Position select depending on netting or hedging |
//+------------------------------------------------------------------+
bool SelectPosition()
{
bool res=false;
//--- check position in Hedging mode
if(ExtHedging)
{
uint total=PositionsTotal();
for(uint i=0; i<total; i++)
{
string position_symbol=PositionGetSymbol(i);
if(_Symbol==position_symbol && MA_MAGIC==PositionGetInteger(POSITION_MAGIC))
{
res=true;
break;
}
}
}
//--- check position in Netting mode
else
{
if(!PositionSelect(_Symbol))
return(false);
else
return(PositionGetInteger(POSITION_MAGIC)==MA_MAGIC); //---check Magic number
}
//--- result for Hedging mode
return(res);
}
//+------------------------------------------------------------------+
//| Expert initialization function |
//+------------------------------------------------------------------+
int OnInit(void)
{
//--- prepare trade class to control positions if hedging mode is active
ExtHedging=((ENUM_ACCOUNT_MARGIN_MODE)AccountInfoInteger(ACCOUNT_MARGIN_MODE)==ACCOUNT_MARGIN_MODE_RETAIL_HEDGING);
ExtTrade.SetExpertMagicNumber(MA_MAGIC);
ExtTrade.SetMarginMode();
ExtTrade.SetTypeFillingBySymbol(Symbol());
//--- Moving Average indicator
ExtHandle=iMA(_Symbol,_Period,MovingPeriod,MovingShift,MODE_SMA,PRICE_CLOSE);
if(ExtHandle==INVALID_HANDLE)
{
printf("Error creating MA indicator");
return(INIT_FAILED);
}
//--- ok
return(INIT_SUCCEEDED);
}
//+------------------------------------------------------------------+
//| Expert tick function |
//+------------------------------------------------------------------+
void OnTick(void)
{
//---
if(SelectPosition())
CheckForClose();
else
CheckForOpen();
//---
}
//+------------------------------------------------------------------+
//| Expert deinitialization function |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
{
}
//+------------------------------------------------------------------+