This script is designed to automatically trade on the Forex market based on a simple trend-following strategy. Here's a breakdown of how it works:
-
Setup: The script starts by defining various settings that you can adjust, such as the stop-loss distance (the maximum amount you're willing to lose on a trade), the trailing stop (a feature that automatically moves your stop-loss order to protect profits as the price moves in your favor), the size of the trades it places (Lots), a unique "magic number" to identify its own trades, the maximum number of orders it will open at once, and a percentage for free assets.
-
Order Management: The script constantly monitors all open trades with its specific "magic number." If the trailing stop feature is enabled, it adjusts the stop-loss levels of these trades to lock in profits as the price moves in a favorable direction.
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Trend Detection: The core of the script is its simple trend detection. It looks at the recent high and open prices of the currency pair. It determines if a buy signal arises when the last open and high prices are bigger than their predecessors (3 previous bars). A sell signal arise when those prices are smaller than the last 3 bars.
-
Trading Logic:
- It checks if the account has enough free margin (available funds) to place trades.
- It checks if the maximum number of orders have been opened.
- If both conditions are met and a trend is detected (either an upward or downward trend), the script places a new trade in the corresponding direction (buy for an upward trend, sell for a downward trend). It will close trades only if they are in loss.
- The script calculates the lot size (trade size) based on a percentage of your free margin, ensuring that the risk is controlled.
-
Housekeeping The scripts has a function to close all the trades or just the trades in loss.
-
Trailing Stop Function This part adjusts the stop-loss price of the current trades in profit in order to guarantee earnings.
Profitability Reports
//+------------------------------------------------------------------+
//| SimpleGrail.mq4 |
//| Copyright © 2009, LEHayes |
//| BlessingsFromEarth@hotmail.com |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2009, LEHayes"
#property link "BlessingsFromEarth@hotmail.com"
extern int StopLoss = 0; // if using 4 digits, set to 20 on Trailing stop loss
extern int TrailingStop = 200; // represents 20 lots with the extra digit
extern bool choice = true;
double Lots = 0.1; // This is legacy, no switch at this time for progressive lots
extern int magicnumber = 143;
bool PolLots = false; // This closes half the lots at some point, without it, more earnings.
extern int MaxOrders = 1; // you can place multiple orders, but suffer equity risk
extern double Prots= 15; // Percentage of free assets
double Lot; // global lot for calculating free assets
int prevtime;
//+------------------------------------------------------------------+
//| expert initialization function |
//+------------------------------------------------------------------+
int init()
{
//----
//----
return(0);
}
//+------------------------------------------------------------------+
//| expert deinitialization function |
//+------------------------------------------------------------------+
int deinit()
{
//----
//----
return(0);
}
//+------------------------------------------------------------------+
//| expert start function |
//+------------------------------------------------------------------+
int start()
{
//----
Lots = GetLots();
int i=0;
int total = OrdersTotal();
for(i = 0; i <= total; i++)
{
if(TrailingStop>0)
{
OrderSelect(i, SELECT_BY_POS, MODE_TRADES);
if(OrderMagicNumber() == magicnumber)
{
TrailingStairs(OrderTicket(),TrailingStop);
}
}
}
if(AccountFreeMargin() > (AccountBalance()/2))
{
bool BuyOp=false;
bool SellOp=false;
if (High[0]>High[1]&&High[1]>High[2]&&High[2]>High[3]&&Open[0]>Open[1]&&Open[1]>Open[2]&&Open[2]>Open[3]) BuyOp=true;
if (High[0]<High[1]&&High[1]<High[2]&&High[2]<High[3]&&Open[0]<Open[1]&&Open[1]<Open[2]&&Open[2]<Open[3]) SellOp=true;
if(Time[0] == prevtime)
return(0);
prevtime = Time[0];
if(!IsTradeAllowed())
{
prevtime = Time[1];
return(0);
}
if (total < MaxOrders || MaxOrders == 0)
{
if(BuyOp)
{
if (StopLoss!=0)
{
HouseKeeper(1);
OrderSend(Symbol(),OP_BUY,Lots,Ask,3,Bid-(StopLoss*Point),0,StringConcatenate("SimpleGrail_", Symbol(), "_Buy"),magicnumber,0,Green);
}
else
{
HouseKeeper(1);
OrderSend(Symbol(),OP_BUY,Lots,Ask,3,0,0,StringConcatenate("SimpleGrail_",Symbol(), "_Buy"),magicnumber,0,Green);
}
}
if(SellOp)
{
if (StopLoss!=0)
{
HouseKeeper(2);
OrderSend(Symbol(),OP_SELL,Lots,Bid,3,Ask+(StopLoss*Point),0,StringConcatenate("SimpleGrail_", Symbol(), "_Sell"),magicnumber,0,Red);
}
else
{
HouseKeeper(2);
OrderSend(Symbol(),OP_SELL,Lots,Bid,3,0,0,StringConcatenate("SimpleGrail_", Symbol(), "_Sell"),magicnumber,0,Red);
}
}
}
}
//----
return(0);
}
//+------------------------------------------------------------------+
int HouseKeeper(int BuySell)
{
int i=0;
int HKtotal = OrdersTotal();
bool IsClosed = false;
choice = true;
if (choice)
{
for(i = 0; i <= HKtotal; i++)
{
OrderSelect(i, SELECT_BY_POS, MODE_TRADES);
IsClosed = OrderClose(OrderTicket(), OrderLots(), OrderClosePrice(),3,Yellow);
if (IsClosed == false)
{
// try again
IsClosed = OrderClose(OrderTicket(), OrderLots(), OrderClosePrice(),3,Yellow);
}
}
}
else
{
for(i = 0; i <= HKtotal; i++)
{
OrderSelect(i, SELECT_BY_POS, MODE_TRADES);
if(OrderMagicNumber() == magicnumber)
{
if (BuySell ==1)
{
if (OrderType() == OP_SELL)
{
if (OrderProfit() < 0)
{
IsClosed = OrderClose(OrderTicket(), OrderLots(), OrderClosePrice(),3,Yellow);
if (IsClosed == false)
{
// try again
IsClosed = OrderClose(OrderTicket(), OrderLots(), OrderClosePrice(),3,Yellow);
}
}
}
}
else
{
if (OrderType() == OP_BUY)
{
if (OrderProfit() < 0)
{
IsClosed = OrderClose(OrderTicket(), OrderLots(), OrderClosePrice(),3,Yellow);
if (IsClosed == false)
{
// try again
IsClosed = OrderClose(OrderTicket(), OrderLots(), OrderClosePrice(),3,Yellow);
}
}
}
}
}
}
}
return(0);
}
double GetLots()
{
Lot = NormalizeDouble( (AccountFreeMargin()/MaxOrders)*Prots/100/1000, 1);// Calculate the amount of lots
Print("Lot calculation is: ", Lot);
if (Lot < MarketInfo(Symbol(),MODE_MINLOT))
{
Lot = MarketInfo(Symbol(),MODE_MINLOT); // For testing on const. min. lots
Print("Lot is too small, setting to minlot of: ", Lot);
}
return(Lot);
}
//+------------------------------------------------------------------+
void TrailingStairs(int ticket,int trldistance)
{
bool result;
int error;
int Spred=Ask - Bid;
int spread;
if (OrderType()==OP_BUY)
{
if((Bid-OrderOpenPrice())>(Point*trldistance))
{
if(OrderStopLoss()<Bid-Point*trldistance || (OrderStopLoss()==0))
{
result=OrderModify(ticket,OrderOpenPrice(),Bid-Point*trldistance,OrderTakeProfit(),0,Green);
while(result!=True)
{
error=GetLastError();
Print("LastError closing first try =",error);
if(error==138)
{
Sleep(10000);
RefreshRates();
result=OrderModify(ticket,OrderOpenPrice(),Bid-Point*trldistance,OrderTakeProfit(),0,Green);
}
if(error==0)
{
result=true;
}
}
if (PolLots)
if (NormalizeDouble(OrderLots()/2,2)>MarketInfo(Symbol(), MODE_MINLOT))
{
spread=MarketInfo(Symbol(),MODE_SPREAD);
result = OrderClose(ticket,NormalizeDouble(OrderLots()/2,2),Ask,spread,Green);
while(result!=True)
{
error=GetLastError();
Print("1 LastError closing first try =",error);
if(error==138)
{
Sleep(10000);
RefreshRates();
spread=MarketInfo(Symbol(),MODE_SPREAD);
result = OrderClose(ticket,NormalizeDouble(OrderLots()/2,2),Ask,spread,Green);
}
if(error==0)
{
result=true;
}
}
}
else
{
spread=MarketInfo(Symbol(),MODE_SPREAD);
result = OrderClose(ticket,OrderLots(),Ask,spread,Green);
while(result!=True)
{
error=GetLastError();
Print("2 LastError closing first try =",error);
if(error==138)
{
Sleep(10000);
RefreshRates();
spread=MarketInfo(Symbol(),MODE_SPREAD);
result = OrderClose(ticket,OrderLots(),Ask,spread,Green);
}
if(error==0)
{
result=true;
}
}
}
}
}
}
else
{
if((OrderOpenPrice()-Ask)>(Point*trldistance))
{
if((OrderStopLoss()>(Ask+Point*trldistance)) || (OrderStopLoss()==0))
{
result=OrderModify(OrderTicket(),OrderOpenPrice(),Ask+Point*trldistance,OrderTakeProfit(),0,Red);
while(result!=True)
{
error=GetLastError();
Print("LastError closing first try =",error);
if(error==138)
{
Sleep(10000);
RefreshRates();
result=OrderModify(OrderTicket(),OrderOpenPrice(),Ask+Point*trldistance,OrderTakeProfit(),0,Red);
}
if(error==0)
{
result=true;
}
}
if (PolLots)
if (NormalizeDouble(OrderLots()/2,2)>MarketInfo(Symbol(), MODE_MINLOT))
{
spread=MarketInfo(Symbol(),MODE_SPREAD);
result = OrderClose(ticket,NormalizeDouble(OrderLots()/2,2),Bid,spread,Green);
while(result!=True)
{
error=GetLastError();
Print("3 LastError closing first try =",error);
if(error==138)
{
Sleep(10000);
RefreshRates();
spread=MarketInfo(Symbol(),MODE_SPREAD);
result = OrderClose(ticket,NormalizeDouble(OrderLots()/2,2),Bid,spread,Green);
}
if(error==0)
{
result=true;
}
}
}
else
{
spread=MarketInfo(Symbol(),MODE_SPREAD);
result = OrderClose(ticket,OrderLots(),Bid,spread,Green);
while(result!=true)
{
error=GetLastError();
Print("4 LastError closing first try =",error);
if(error==138)
{
Sleep(10000);
RefreshRates();
spread=MarketInfo(Symbol(),MODE_SPREAD);
result = OrderClose(ticket,NormalizeDouble(OrderLots()/2,2),Bid,spread,Green);
}
if(error==0)
{
result=true;
}
}
}
}
}
}
}
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