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2026-08-01 14:47:43 +00:00 · 2025-09-21 22:42:19 +02:00
parent 1e9b31ebbf
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+//+------------------------------------------------------------------+
+//|                                                    MAMA_FAMA.mq5 |
+//|                                          Copyright 2025, xxxxxxxx|
+//+------------------------------------------------------------------+
+#property copyright "Copyright 2025, xxxxxxxx"
+#property version   "3.00"
+#property description "MESA Adaptive Moving Average (MAMA) and FAMA by John Ehlers."
+#property description "Based on the official MotiveWave pseudo-code."
+
+#property indicator_chart_window
+#property indicator_buffers 2 // MAMA and FAMA
+#property indicator_plots   2
+
+#include <MyIncludes\MESA_Calculator.mqh>
+
+//--- Plot 1: MAMA Line
+#property indicator_label1  "MAMA"
+#property indicator_type1   DRAW_LINE
+#property indicator_color1  clrRed
+#property indicator_style1  STYLE_SOLID
+#property indicator_width1  2
+
+//--- Plot 2: FAMA Line
+#property indicator_label2  "FAMA"
+#property indicator_type2   DRAW_LINE
+#property indicator_color2  clrGreen
+#property indicator_style2  STYLE_SOLID
+#property indicator_width2  1
+
+//--- Input Parameters ---
+input ENUM_APPLIED_PRICE InpSourcePrice = PRICE_CLOSE; // Source Price
+input double             InpFastLimit   = 0.5;         // Fast Limit
+input double             InpSlowLimit   = 0.05;        // Slow Limit
+
+//--- Indicator Buffers ---
+double    BufferMAMA[];
+double    BufferFAMA[];
+double    BufferPrice[];
+
+//--- Global calculator object ---
+CMESACalculator *g_calculator;
+
+//+------------------------------------------------------------------+
+//| Custom indicator initialization function.                        |
+//+------------------------------------------------------------------+
+int OnInit()
+  {
+   SetIndexBuffer(0, BufferMAMA, INDICATOR_DATA);
+   SetIndexBuffer(1, BufferFAMA, INDICATOR_DATA);
+   ArraySetAsSeries(BufferMAMA, false);
+   ArraySetAsSeries(BufferFAMA, false);
+
+   PlotIndexSetInteger(0, PLOT_DRAW_BEGIN, 10);
+   PlotIndexSetInteger(1, PLOT_DRAW_BEGIN, 10);
+   IndicatorSetString(INDICATOR_SHORTNAME, StringFormat("MAMA/FAMA(%.2f, %.2f)", InpFastLimit, InpSlowLimit));
+
+   g_calculator = new CMESACalculator();
+   if(CheckPointer(g_calculator) == POINTER_INVALID || !g_calculator.Init(InpFastLimit, InpSlowLimit))
+     {
+      Print("Failed to initialize MESA Calculator.");
+      return(INIT_FAILED);
+     }
+   return(INIT_SUCCEEDED);
+  }
+
+//+------------------------------------------------------------------+
+//| Custom indicator deinitialization function.                      |
+//+------------------------------------------------------------------+
+void OnDeinit(const int reason)
+  {
+   if(CheckPointer(g_calculator) != POINTER_INVALID)
+      delete g_calculator;
+  }
+
+//+------------------------------------------------------------------+
+//| Custom indicator iteration function.                             |
+//+------------------------------------------------------------------+
+int OnCalculate(const int, const int, const datetime&[], const double &open[], const double &high[], const double &low[], const double &close[], const long&[], const long&[], const int&[])
+  {
+   int rates_total = ArraySize(close);
+   ArrayResize(BufferPrice, rates_total);
+   if(PriceSeries(InpSourcePrice, rates_total, open, high, low, close, BufferPrice) <= 0)
+      return 0;
+
+   if(CheckPointer(g_calculator) != POINTER_INVALID)
+     {
+      g_calculator.Calculate(rates_total, BufferPrice, BufferMAMA, BufferFAMA);
+     }
+   return(rates_total);
+  }
+
+//+------------------------------------------------------------------+
+//| Helper function to get the selected price series.                |
+//+------------------------------------------------------------------+
+int PriceSeries(ENUM_APPLIED_PRICE type, int rates_total, const double &open[], const double &high[], const double &low[], const double &close[], double &dest_buffer[])
+  {
+   switch(type)
+     {
+      case PRICE_CLOSE:
+         ArrayCopy(dest_buffer, close, 0, 0, rates_total);
+         break;
+      case PRICE_OPEN:
+         ArrayCopy(dest_buffer, open, 0, 0, rates_total);
+         break;
+      case PRICE_HIGH:
+         ArrayCopy(dest_buffer, high, 0, 0, rates_total);
+         break;
+      case PRICE_LOW:
+         ArrayCopy(dest_buffer, low, 0, 0, rates_total);
+         break;
+      case PRICE_MEDIAN:
+         for(int i=0; i<rates_total; i++)
+            dest_buffer[i] = (high[i]+low[i])/2.0;
+         break;
+      case PRICE_TYPICAL:
+         for(int i=0; i<rates_total; i++)
+            dest_buffer[i] = (high[i]+low[i]+close[i])/3.0;
+         break;
+      case PRICE_WEIGHTED:
+         for(int i=0; i<rates_total; i++)
+            dest_buffer[i] = (high[i]+low[i]+close[i]+close[i])/4.0;
+         break;
+      default:
+         return 0;
+     }
+   return rates_total;
+  }
+//+------------------------------------------------------------------+
+//+------------------------------------------------------------------+