refactor: Added optional signal line

Include/MyIncludes/Laguerre_RSI_Calculator.mqh

@@ -1,41 +1,48 @@
 //+------------------------------------------------------------------+
 //|                                     Laguerre_RSI_Calculator.mqh  |
-//|      Adapter for the Laguerre RSI indicator.                     |
+//|      VERSION 1.10: Added optional signal line.                   |
 //|                                        Copyright 2025, xxxxxxxx  |
 //+------------------------------------------------------------------+
 #property copyright "Copyright 2025, xxxxxxxx"
 
 #include <MyIncludes\Laguerre_Engine.mqh>
+#include <MyIncludes\MovingAverage_Engine.mqh> // For ENUM_MA_TYPE
 
-//+==================================================================+
-//|                                                                  |
-//|           CLASS 1: CLaguerreRSICalculator (Base Class)           |
-//|                                                                  |
 //+==================================================================+
 class CLaguerreRSICalculator
   {
 protected:
    CLaguerreEngine   *m_engine;
+   int               m_signal_period;
+   ENUM_MA_TYPE      m_signal_ma_type;
+
+   void              CalculateMA(const double &source_array[], double &dest_array[], int period, ENUM_MA_TYPE method, int start_pos);
 
 public:
                      CLaguerreRSICalculator(void) { m_engine = new CLaguerreEngine(); };
    virtual          ~CLaguerreRSICalculator(void) { if(CheckPointer(m_engine) != POINTER_INVALID) delete m_engine; };
 
-   bool              Init(double gamma);
+   bool              Init(double gamma, int signal_p, ENUM_MA_TYPE signal_ma);
-   void              Calculate(int rates_total, ENUM_APPLIED_PRICE price_type, const double &open[], const double &high[], const double &low[], const double &close[], double &lrsi_buffer[]);
+   void              Calculate(int rates_total, ENUM_APPLIED_PRICE price_type, const double &open[], const double &high[], const double &low[], const double &close[],
+                               double &lrsi_buffer[], double &signal_buffer[]);
   };
 
-// CORRECTED: Pass the required SOURCE_PRICE to the engine's Init method.
+//+------------------------------------------------------------------+
-bool CLaguerreRSICalculator::Init(double gamma) { return m_engine.Init(gamma, SOURCE_PRICE); }
+bool CLaguerreRSICalculator::Init(double gamma, int signal_p, ENUM_MA_TYPE signal_ma)
+  {
+   m_signal_period = (signal_p < 1) ? 1 : signal_p;
+   m_signal_ma_type = signal_ma;
+   return m_engine.Init(gamma, SOURCE_PRICE);
+  }
 
 //+------------------------------------------------------------------+
-void CLaguerreRSICalculator::Calculate(int rates_total, ENUM_APPLIED_PRICE price_type, const double &open[], const double &high[], const double &low[], const double &close[], double &lrsi_buffer[])
+void CLaguerreRSICalculator::Calculate(int rates_total, ENUM_APPLIED_PRICE price_type, const double &open[], const double &high[], const double &low[], const double &close[],
+                                       double &lrsi_buffer[], double &signal_buffer[])
   {
    if(rates_total < 2)
       return;
 
-   double L0[], L1[], L2[], L3[];
+   double L0[], L1[], L2[], L3[], dummy_filt[];
-   double dummy_filt[]; // Dummy buffer to satisfy the engine's new signature
    m_engine.CalculateFilter(rates_total, price_type, open, high, low, close, L0, L1, L2, L3, dummy_filt);
 
    for(int i = 1; i < rates_total; i++)
@@ -64,9 +71,82 @@ void CLaguerreRSICalculator::Calculate(int rates_total, ENUM_APPLIED_PRICE price
          lrsi_value = 100.0;
       if(lrsi_value < 0.0)
          lrsi_value = 0.0;
-
       lrsi_buffer[i] = lrsi_value;
      }
+
+//--- Step 2: Calculate Signal Line on the LRSI buffer ---
+   int signal_start = m_signal_period + 1; // LRSI starts at index 1, so we need more bars
+   CalculateMA(lrsi_buffer, signal_buffer, m_signal_period, m_signal_ma_type, signal_start);
+  }
+
+//+------------------------------------------------------------------+
+void CLaguerreRSICalculator::CalculateMA(const double &source_array[], double &dest_array[], int period, ENUM_MA_TYPE method, int start_pos)
+  {
+   for(int i = start_pos; i < ArraySize(source_array); i++)
+     {
+      switch(method)
+        {
+         case EMA:
+         case SMMA:
+            if(i == start_pos)
+              {
+               double sum=0;
+               int count=0;
+               for(int j=0; j<period; j++)
+                 {
+                  if(source_array[i-j] != EMPTY_VALUE)
+                    {
+                     sum+=source_array[i-j];
+                     count++;
+                    }
+                 }
+               if(count > 0)
+                  dest_array[i]=sum/count;
+              }
+            else
+              {
+               if(method==EMA)
+                 {
+                  double pr=2.0/(period+1.0);
+                  dest_array[i]=source_array[i]*pr+dest_array[i-1]*(1.0-pr);
+                 }
+               else
+                  dest_array[i]=(dest_array[i-1]*(period-1)+source_array[i])/period;
+              }
+            break;
+         case LWMA:
+           {
+            double sum=0, w_sum=0;
+            for(int j=0; j<period; j++)
+              {
+               if(source_array[i-j] == EMPTY_VALUE)
+                  continue;
+               int w=period-j;
+               sum+=source_array[i-j]*w;
+               w_sum+=w;
+              }
+            if(w_sum>0)
+               dest_array[i]=sum/w_sum;
+           }
+         break;
+         default: // SMA
+           {
+            double sum=0;
+            int count=0;
+            for(int j=0; j<period; j++)
+              {
+               if(source_array[i-j] != EMPTY_VALUE)
+                 {
+                  sum+=source_array[i-j];
+                  count++;
+                 }
+              }
+            if(count > 0)
+               dest_array[i]=sum/count;
+           }
+         break;
+        }
+     }
   }
 
 //+==================================================================+