add support for dynamic volume calculation in ea ...

Classes/x-saherelm.xtrade.class.mq5

@@ -3285,6 +3285,51 @@ public:
         return result;
     }
 
+    //
+    // Prepare Dynamic Volume ...
+    double GetDynamicVolume(
+        string _symbol,
+        double _balanceFactor,
+        double _volumeStep //
+    )
+    {
+        //
+        double result = 0;
+
+        //
+        // Validate Inputs ...
+        if (!IsValid(_symbol) ||
+            _volumeStep <= 0 ||
+            _balanceFactor <= 0)
+        {
+            return result;
+        }
+
+        //
+        // Retrieve Account Balance ...
+        double balance = mAccount.GetBalance();
+
+        //
+        double bStep = balance / _balanceFactor;
+        bStep = MathFloor(bStep);
+        if (bStep == 0)
+        {
+            bStep = 1;
+        }
+
+        //
+        result = bStep * _volumeStep;
+
+        //
+        result = NormalizeVolume(
+            result,
+            _symbol //
+        );
+
+        //
+        return result;
+    }
+
     //
     // Protected ...
 protected:
@@ -4939,6 +4984,39 @@ public:
         GetMaxDrawdown();
     }
 
+    //
+    void UpdateSignal(XSignal &signal)
+    {
+        //
+        if (!signal.IsValid())
+        {
+            return;
+        }
+
+        //
+        int count = Count();
+        if (!IsValidSize(count))
+        {
+            return;
+        }
+
+        //
+        for (int i = 0; i < count; i++)
+        {
+            //
+            bool isOwn = mData[i].IsOwn(
+                signal.symbol,
+                signal.provider,
+                signal.period,
+                ToPositionType(signal.type) //
+            );
+            if (isOwn)
+            {
+                mData[i].Fill(signal);
+            }
+        }
+    }
+
     //
     // Do all Protections ...
     void HandleProtection()
@@ -5810,7 +5888,7 @@ protected:
     bool mSaveConditions; // Save SL Conditions
 
     //
-    XSymbolSessionParser mSymbolSession; // Check Symbol Session 
+    XSymbolSessionParser mSymbolSession; // Check Symbol Session
 
     //
     bool mAllowLong;                         // Allow Long/Buy Trade Type

Experts/x-saherelm.xch.strategy.ea.mq5

@@ -49,9 +49,12 @@ input bool eaUseMaxAllowedTradesPerSymbol = true;                              /
 input string eaSymbols = "EURUSDb,GBPUSDb,USDJPYb,USDCHFb,XAUUSDb,DowJones30"; // Trading Symbols
 
 //
-// Trades ...
-input group "Trades";
-input double eaVolume = 0.3;            // Static Volume
+// Risk Management ...
+input group "Risk Management";
+
+//
+// Risk Management > Risk / Reward Calculation ...
+input group "Risk/Reward";
 input double eaR2R = 1.5;               // Risk to Reward Ratio for Dynamic TP SL
 input bool eaUseFixedTPSLPoints = true; // Use Fixed TP SL in Points
 input bool eaIgnoreTP = false;          // Ignore TP
@@ -60,8 +63,12 @@ input double eaTPPoint = 200;           // Static TP Point
 input double eaSLPoint = 500;           // Static SL Point
 
 //
-// Risk Management ...
-input group "Risk Management";
+// Risk Management > Volume Calculation ...
+input group "Volume";
+input bool eaUseDynamicVolume = false;           // Use Dynamic Volume
+input double eaDynamicVolumeStep = 0.01;         // Increase Volume Step
+input double eaDynamicVolumeBalanceFactor = 200; // Balance Factor for Generate Dynamic Volume
+input double eaVolume = 0.3;                     // Static Volume
 
 //
 // Risk Management > Trade Management ...
@@ -646,6 +653,30 @@ void OnSignalRecieved(
         return;
     }
 
+    //
+    // Prepare Signal Dynamic Volume
+    // if Provided ...
+    if (eaUseDynamicVolume &&
+        eaDynamicVolumeStep > 0 &&
+        eaDynamicVolumeBalanceFactor > 0)
+    {
+        //
+        double dVolume = eaTrader.GetDynamicVolume(
+            signal.symbol,
+            eaDynamicVolumeBalanceFactor,
+            eaDynamicVolumeStep //
+        );
+
+        //
+        if (dVolume > 0)
+        {
+            signal.volume = dVolume;
+        }
+
+        //
+        eaTradeHandler.UpdateSignal(signal);
+    }
+
     //
     // Since Signal Filtering done based on
     // Strategy and it's not related to Public