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2026-08-06 00:57:45 +00:00 · 2025-08-13 17:32:34 +02:00
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+//+------------------------------------------------------------------+
+//|                                  McGinleyDynamic_HeikenAshi.mq5  |
+//|                      Copyright 2025, xxxxxxxx                    |
+//|                                                                  |
+//+------------------------------------------------------------------+
+#property copyright "Copyright 2025, xxxxxxxx"
+#property link      ""
+#property version   "1.01" // Corrected array handling
+#property description "McGinley Dynamic Indicator on Heiken Ashi data"
+
+#include <MovingAverages.mqh>
+#include <MyIncludes\HA_Tools.mqh>
+
+//--- Indicator Window and Plot Properties ---
+#property indicator_chart_window
+#property indicator_buffers 1
+#property indicator_plots   1
+
+//--- Plot 1: McGinley Dynamic line
+#property indicator_label1  "HA_McGinley"
+#property indicator_type1   DRAW_LINE
+#property indicator_color1  clrCrimson
+#property indicator_style1  STYLE_SOLID
+#property indicator_width1  2
+
+//--- Enum for selecting Heiken Ashi price source ---
+enum ENUM_HA_APPLIED_PRICE
+  {
+   HA_PRICE_CLOSE, // Heiken Ashi Close
+   HA_PRICE_OPEN,  // Heiken Ashi Open
+   HA_PRICE_HIGH,  // Heiken Ashi High
+   HA_PRICE_LOW,   // Heiken Ashi Low
+  };
+
+//--- Input Parameters ---
+input int                  InpLength       = 14;
+input ENUM_HA_APPLIED_PRICE InpAppliedPrice = HA_PRICE_CLOSE;
+
+//--- Indicator Buffers ---
+double    BufferHA_McGinley[];
+
+//--- Global Objects and Variables ---
+int              ExtLength;
+CHA_Calculator   g_ha_calculator;
+
+//+------------------------------------------------------------------+
+//| Custom indicator initialization function.                        |
+//+------------------------------------------------------------------+
+void OnInit()
+  {
+   ExtLength = (InpLength < 1) ? 1 : InpLength;
+
+   SetIndexBuffer(0, BufferHA_McGinley, INDICATOR_DATA);
+   ArraySetAsSeries(BufferHA_McGinley, false);
+
+   IndicatorSetInteger(INDICATOR_DIGITS, _Digits);
+   PlotIndexSetInteger(0, PLOT_DRAW_BEGIN, ExtLength);
+   IndicatorSetString(INDICATOR_SHORTNAME, StringFormat("HA_McGinley(%d)", ExtLength));
+  }
+
+//+------------------------------------------------------------------+
+//| McGinley Dynamic on Heiken Ashi 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[])
+  {
+   if(rates_total < ExtLength)
+      return(0);
+
+//--- STEP 1: Calculate Heiken Ashi bars using our toolkit
+   if(!g_ha_calculator.Calculate(rates_total, 0, open, high, low, close))
+      return(0);
+
+//--- STEP 2: Main calculation loop
+   for(int i = 1; i < rates_total; i++)
+     {
+      if(i < ExtLength)
+        {
+         BufferHA_McGinley[i] = EMPTY_VALUE;
+         continue;
+        }
+
+      // Select the source price for the current bar 'i'
+      double source_price = 0;
+      switch(InpAppliedPrice)
+        {
+         case HA_PRICE_OPEN:
+            source_price = g_ha_calculator.ha_open[i];
+            break;
+         case HA_PRICE_HIGH:
+            source_price = g_ha_calculator.ha_high[i];
+            break;
+         case HA_PRICE_LOW:
+            source_price = g_ha_calculator.ha_low[i];
+            break;
+         default:
+            source_price = g_ha_calculator.ha_close[i];
+            break;
+        }
+
+      // --- Initialization Step ---
+      if(i == ExtLength)
+        {
+         // The first McGinley value is an SMA of the source HA price
+         // We need to create a temporary array for the SMA function
+         double temp_price_array[];
+         switch(InpAppliedPrice)
+           {
+            case HA_PRICE_OPEN:
+               ArrayCopy(temp_price_array, g_ha_calculator.ha_open);
+               break;
+            case HA_PRICE_HIGH:
+               ArrayCopy(temp_price_array, g_ha_calculator.ha_high);
+               break;
+            case HA_PRICE_LOW:
+               ArrayCopy(temp_price_array, g_ha_calculator.ha_low);
+               break;
+            default:
+               ArrayCopy(temp_price_array, g_ha_calculator.ha_close);
+               break;
+           }
+         BufferHA_McGinley[i] = SimpleMA(i, ExtLength, temp_price_array);
+         continue;
+        }
+
+      // --- Recursive Calculation Step ---
+      double prev_mg = BufferHA_McGinley[i-1];
+
+      if(prev_mg == 0)
+        {
+         BufferHA_McGinley[i] = source_price;
+         continue;
+        }
+
+      double ratio = source_price / prev_mg;
+      double denominator = ExtLength * MathPow(ratio, 4);
+
+      if(denominator == 0)
+        {
+         BufferHA_McGinley[i] = prev_mg;
+         continue;
+        }
+
+      BufferHA_McGinley[i] = prev_mg + (source_price - prev_mg) / denominator;
+     }
+
+   return(rates_total);
+  }
+//+------------------------------------------------------------------+
+//+------------------------------------------------------------------+