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+//+------------------------------------------------------------------+
+//|                                        Blau_Ergodic_MACD.mq5     |
+//|                      Copyright 2025, xxxxxxxx                    |
+//|                                                                  |
+//+------------------------------------------------------------------+
+#property copyright "Copyright 2025, xxxxxxxx"
+#property link      ""
+#property version   "2.02" // Separated from Oscillator
+#property description "Ergodic MACD Oscillator by William Blau (Lines)."
+#property description "Applies double EMA smoothing to the classic MACD and Signal lines."
+
+//--- Indicator Window and Plot Properties ---
+#property indicator_separate_window
+#property indicator_buffers 2 // Ergodic MACD and Ergodic Signal
+#property indicator_plots   2
+#property indicator_level1  0.0
+#property indicator_levelstyle STYLE_DOT
+
+//--- Plot 1: Smoothed MACD Line
+#property indicator_label1  "Ergodic MACD"
+#property indicator_type1   DRAW_LINE
+#property indicator_color1  clrDodgerBlue
+#property indicator_style1  STYLE_SOLID
+#property indicator_width1  1
+
+//--- Plot 2: Smoothed Signal Line
+#property indicator_label2  "Ergodic Signal"
+#property indicator_type2   DRAW_LINE
+#property indicator_color2  clrOrangeRed
+#property indicator_style2  STYLE_SOLID
+#property indicator_width2  1
+
+//--- Input Parameters ---
+input group              "Classic MACD Settings"
+input int                InpFastEMAPeriod   = 12;
+input int                InpSlowEMAPeriod   = 26;
+input int                InpSignalEMAPeriod = 9;
+input ENUM_APPLIED_PRICE InpAppliedPrice    = PRICE_CLOSE;
+input group              "Ergodic Smoothing Settings"
+input int                InpSlowSmoothPeriod = 20;
+input int                InpFastSmoothPeriod = 5;
+
+//--- Indicator Buffers ---
+double    BufferErgodicMACD[];
+double    BufferErgodicSignal[];
+
+//--- Global Variables ---
+int       g_ExtFastEMA, g_ExtSlowEMA, g_ExtSignalEMA, g_ExtSlowSmooth, g_ExtFastSmooth;
+
+//+------------------------------------------------------------------+
+//| Custom indicator initialization function.                        |
+//+------------------------------------------------------------------+
+int OnInit()
+  {
+   g_ExtFastEMA      = (InpFastEMAPeriod < 1) ? 1 : InpFastEMAPeriod;
+   g_ExtSlowEMA      = (InpSlowEMAPeriod < 1) ? 1 : InpSlowEMAPeriod;
+   g_ExtSignalEMA    = (InpSignalEMAPeriod < 1) ? 1 : InpSignalEMAPeriod;
+   g_ExtSlowSmooth   = (InpSlowSmoothPeriod < 1) ? 1 : InpSlowSmoothPeriod;
+   g_ExtFastSmooth   = (InpFastSmoothPeriod < 1) ? 1 : InpFastSmoothPeriod;
+
+   if(g_ExtFastEMA > g_ExtSlowEMA)
+     {
+      int temp = g_ExtFastEMA;
+      g_ExtFastEMA = g_ExtSlowEMA;
+      g_ExtSlowEMA = temp;
+     }
+
+   SetIndexBuffer(0, BufferErgodicMACD,   INDICATOR_DATA);
+   SetIndexBuffer(1, BufferErgodicSignal, INDICATOR_DATA);
+
+   ArraySetAsSeries(BufferErgodicMACD,   false);
+   ArraySetAsSeries(BufferErgodicSignal, false);
+
+   int draw_begin = g_ExtSlowEMA + g_ExtSignalEMA + g_ExtSlowSmooth + g_ExtFastSmooth - 3;
+   PlotIndexSetInteger(0, PLOT_DRAW_BEGIN, draw_begin);
+   PlotIndexSetInteger(1, PLOT_DRAW_BEGIN, draw_begin);
+   IndicatorSetString(INDICATOR_SHORTNAME, StringFormat("Ergodic MACD(%d,%d,%d,%d,%d)", g_ExtFastEMA, g_ExtSlowEMA, g_ExtSignalEMA, g_ExtSlowSmooth, g_ExtFastSmooth));
+   IndicatorSetInteger(INDICATOR_DIGITS, _Digits);
+
+   return(INIT_SUCCEEDED);
+  }
+
+//+------------------------------------------------------------------+
+//| Ergodic MACD calculation function.                               |
+//+------------------------------------------------------------------+
+int OnCalculate(const int rates_total,
+                const int prev_calculated,
+                const datetime &time[],
+                const double &open[],
+                const double &high[],
+                const double &low[],
+                const double &close[],
+                const long &tick_volume[],
+                const long &volume[],
+                const int &spread[])
+  {
+   int start_pos = g_ExtSlowEMA + g_ExtSignalEMA + g_ExtSlowSmooth + g_ExtFastSmooth - 3;
+   if(rates_total <= start_pos)
+      return(0);
+
+//--- STEP 1: Calculate Classic MACD Line and Signal Line (internal buffers) ---
+   double classic_macd_line[], classic_signal_line[];
+   ArrayResize(classic_macd_line, rates_total);
+   ArrayResize(classic_signal_line, rates_total);
+
+// Calculate Classic MACD Line
+     {
+      double price_source[];
+      ArrayResize(price_source, rates_total);
+      for(int i=0; i<rates_total; i++)
+        {
+         switch(InpAppliedPrice)
+           {
+            case PRICE_OPEN:
+               price_source[i] = open[i];
+               break;
+            case PRICE_HIGH:
+               price_source[i] = high[i];
+               break;
+            case PRICE_LOW:
+               price_source[i] = low[i];
+               break;
+            default:
+               price_source[i] = close[i];
+               break;
+           }
+        }
+
+      double fast_ema[], slow_ema[];
+      ArrayResize(fast_ema, rates_total);
+      ArrayResize(slow_ema, rates_total);
+
+      double pr_fast = 2.0/(g_ExtFastEMA+1.0);
+      for(int i=g_ExtFastEMA-1; i<rates_total; i++)
+        {
+         if(i==g_ExtFastEMA-1)
+           {
+            double sum=0;
+            for(int j=0;j<g_ExtFastEMA;j++)
+               sum+=price_source[i-j];
+            fast_ema[i]=sum/g_ExtFastEMA;
+           }
+         else
+            fast_ema[i] = price_source[i]*pr_fast + fast_ema[i-1]*(1.0-pr_fast);
+        }
+
+      double pr_slow = 2.0/(g_ExtSlowEMA+1.0);
+      for(int i=g_ExtSlowEMA-1; i<rates_total; i++)
+        {
+         if(i==g_ExtSlowEMA-1)
+           {
+            double sum=0;
+            for(int j=0;j<g_ExtSlowEMA;j++)
+               sum+=price_source[i-j];
+            slow_ema[i]=sum/g_ExtSlowEMA;
+           }
+         else
+            slow_ema[i] = price_source[i]*pr_slow + slow_ema[i-1]*(1.0-pr_slow);
+        }
+
+      for(int i=g_ExtSlowEMA-1; i<rates_total; i++)
+         classic_macd_line[i] = fast_ema[i] - slow_ema[i];
+     }
+
+// Calculate Classic Signal Line
+     {
+      double pr_signal = 2.0/(g_ExtSignalEMA+1.0);
+      int signal_start = g_ExtSlowEMA + g_ExtSignalEMA - 2;
+      for(int i=signal_start; i<rates_total; i++)
+        {
+         if(i==signal_start)
+           {
+            double sum=0;
+            for(int j=0;j<g_ExtSignalEMA;j++)
+               sum+=classic_macd_line[i-j];
+            classic_signal_line[i]=sum/g_ExtSignalEMA;
+           }
+         else
+            classic_signal_line[i] = classic_macd_line[i]*pr_signal + classic_signal_line[i-1]*(1.0-pr_signal);
+        }
+     }
+
+//--- STEP 2: First Ergodic Smoothing (Slow Period) on Classic Lines ---
+   double ema1_macd[], ema1_signal[];
+   ArrayResize(ema1_macd, rates_total);
+   ArrayResize(ema1_signal, rates_total);
+   double pr_slow_smooth = 2.0 / (g_ExtSlowSmooth + 1.0);
+   int ema1_start_pos = g_ExtSlowEMA + g_ExtSignalEMA + g_ExtSlowSmooth - 3;
+
+   for(int i = ema1_start_pos; i < rates_total; i++)
+     {
+      if(i == ema1_start_pos)
+        {
+         double sum_macd=0, sum_signal=0;
+         for(int j=0; j<g_ExtSlowSmooth; j++)
+           {
+            sum_macd += classic_macd_line[i-j];
+            sum_signal += classic_signal_line[i-j];
+           }
+         ema1_macd[i] = sum_macd / g_ExtSlowSmooth;
+         ema1_signal[i] = sum_signal / g_ExtSlowSmooth;
+        }
+      else
+        {
+         ema1_macd[i] = classic_macd_line[i] * pr_slow_smooth + ema1_macd[i-1] * (1.0 - pr_slow_smooth);
+         ema1_signal[i] = classic_signal_line[i] * pr_slow_smooth + ema1_signal[i-1] * (1.0 - pr_slow_smooth);
+        }
+     }
+
+//--- STEP 3: Second Ergodic Smoothing (Fast Period) on EMA1 ---
+   double pr_fast_smooth = 2.0 / (g_ExtFastSmooth + 1.0);
+   int ema2_start_pos = ema1_start_pos + g_ExtFastSmooth - 1;
+
+   for(int i = ema2_start_pos; i < rates_total; i++)
+     {
+      if(i == ema2_start_pos)
+        {
+         double sum_macd=0, sum_signal=0;
+         for(int j=0; j<g_ExtFastSmooth; j++)
+           {
+            sum_macd += ema1_macd[i-j];
+            sum_signal += ema1_signal[i-j];
+           }
+         BufferErgodicMACD[i] = sum_macd / g_ExtFastSmooth;
+         BufferErgodicSignal[i] = sum_signal / g_ExtFastSmooth;
+        }
+      else
+        {
+         BufferErgodicMACD[i] = ema1_macd[i] * pr_fast_smooth + BufferErgodicMACD[i-1] * (1.0 - pr_fast_smooth);
+         BufferErgodicSignal[i] = ema1_signal[i] * pr_fast_smooth + BufferErgodicSignal[i-1] * (1.0 - pr_fast_smooth);
+        }
+     }
+
+   return(rates_total);
+  }
+//+------------------------------------------------------------------+
+//+------------------------------------------------------------------+