From 6aeea1c5c75f567121793d176e61177b543a18a1 Mon Sep 17 00:00:00 2001
From: Hadi Khazaee Asl <hadi_khazaee_asl@yahoo.com>
Date: Wed, 20 Nov 2024 06:48:56 +0330
Subject: [PATCH] Add Support for Risk Per Balance on Each Trade ...

---
 Experts/x-saherelm.x-121.smc.ea.mq5          |  4 +-
 X121SMCEA/Experts/x-121.smc.expert.class.mq5 | 60 +++++++++++++++++++-
 2 files changed, 62 insertions(+), 2 deletions(-)

diff --git a/Experts/x-saherelm.x-121.smc.ea.mq5 b/Experts/x-saherelm.x-121.smc.ea.mq5
index 9e887987..a49ca626 100644
--- a/Experts/x-saherelm.x-121.smc.ea.mq5
+++ b/Experts/x-saherelm.x-121.smc.ea.mq5
@@ -48,6 +48,7 @@ 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 = 0.05;                    // Static Volume
+input double eaRiskPercentPerBalance = 0.25;     // Risk Percent Per Balance on Each Trade
 
 //
 // Signalling ...
@@ -142,6 +143,7 @@ int OnInit()
     eaExpert.Volume(eaVolume);
     eaExpert.UseDynamicVolume(eaUseDynamicVolume);
     eaExpert.DynamicVolumeStep(eaDynamicVolumeStep);
+    eaExpert.RiskPercentPerBalance(eaRiskPercentPerBalance);
     eaExpert.DynamicVolumeBalanceFactor(eaDynamicVolumeBalanceFactor);
 
     //
@@ -248,7 +250,7 @@ void OnStopLossTriggered(const XDeal &deal)
  */
 void OnTakeProfitTriggered(const XDeal &deal)
 {
-     eaExpert.HandleOnTakeProfitTriggered(deal);
+    eaExpert.HandleOnTakeProfitTriggered(deal);
 }
 
 /**
diff --git a/X121SMCEA/Experts/x-121.smc.expert.class.mq5 b/X121SMCEA/Experts/x-121.smc.expert.class.mq5
index f7e437d8..f48dd521 100644
--- a/X121SMCEA/Experts/x-121.smc.expert.class.mq5
+++ b/X121SMCEA/Experts/x-121.smc.expert.class.mq5
@@ -21,9 +21,9 @@
 
 //
 // Imports ...
-#include "../Libraries/x-121.smc.lib.mq5"
 #include "../../Classes/x-saherelm.x-expert.class.mq5"
 #include "../Classes/x-121.smc.x-tradehandler.class.mq5"
+#include "../Libraries/x-121.smc.lib.mq5"
 #include "../Strategy/x-121.smc.test.strategy.class.mq5"
 
 //
@@ -127,6 +127,33 @@ class XC121SMCExpert : public XCBaseExpert
         mDynamicVolumeBalanceFactor = value;
     }
 
+    /**
+     * Get Risk Percent Per Balance in Each Trade ...
+     *
+     * @return ( double )
+     */
+    double RiskPercentPerBalance()
+    {
+        return mRiskPercentPerBalance;
+    }
+
+    /**
+     * Set Risk Percent Per Balance in Each Trade ...
+     *
+     * @param  value: Double
+     */
+    void RiskPercentPerBalance(double value)
+    {
+        //
+        if (value < 0)
+        {
+            value = 0;
+        }
+
+        //
+        mRiskPercentPerBalance = value;
+    }
+
     /**
      * Get Static Volume ...
      *
@@ -799,6 +826,36 @@ class XC121SMCExpert : public XCBaseExpert
                 signal.volume = Volume();
             }
         }
+        else if (RiskPercentPerBalance() > 0)
+        {
+            //
+            double riskPercent = RiskPercentPerBalance();
+
+            //
+            double balance = mTrader.mAccount.GetBalance();
+            double riskAmountPerBalance = (riskPercent * balance) / 100;
+
+            //
+            double risk = signal.GetRisk();
+            double points = GetPoints(signal.symbol);
+            double riskInPoints = risk / points;
+
+            //
+            double volume = mTrader.mAccount.CalculateVolume(
+                signal.symbol,
+                riskAmountPerBalance,
+                riskInPoints //
+            );
+
+            //
+            if (volume > 0)
+            {
+                volume = NormalizeVolume(volume, signal.symbol);
+            }
+
+            //
+            signal.volume = volume;
+        }
         else
         {
             signal.volume = Volume();
@@ -906,6 +963,7 @@ class XC121SMCExpert : public XCBaseExpert
     double mDynamicVolumeStep;          // Increase Volume Step ...
     double mDynamicVolumeBalanceFactor; // Balance Factor for Generate Dynamic Volume ...
     double mVolume;                     // Static Volume ...
+    double mRiskPercentPerBalance;      // Risk Percent Per Balance in Each Trade ...
 
     //
 };