mql5/Indicators/MyIndicators/MAMA_MTF_Pro.mq5

//+------------------------------------------------------------------+
//|                                                  MAMA_MTF_Pro.mq5|
//|                                          Copyright 2025, xxxxxxxx|
//|                                                                  |
//+------------------------------------------------------------------+
#property copyright "Copyright 2025, xxxxxxxx"
#property version   "2.00" // REFACTORED: Self-contained calculation, no iCustom dependency
#property description "Multi-Timeframe (MTF) version of John Ehlers' MAMA and FAMA."
#property description "Displays MAMA/FAMA from a higher timeframe on the current chart."

#property indicator_chart_window
#property indicator_buffers 2
#property indicator_plots   2

//--- Plot 1: MAMA
#property indicator_label1  "MAMA MTF"
#property indicator_type1   DRAW_LINE
#property indicator_color1  clrRed
#property indicator_style1  STYLE_SOLID
#property indicator_width1  2

//--- Plot 2: FAMA
#property indicator_label2  "FAMA MTF"
#property indicator_type2   DRAW_LINE
#property indicator_color2  clrBlue
#property indicator_style2  STYLE_SOLID
#property indicator_width2  2

#include <MyIncludes\MAMA_Calculator.mqh>

//--- Input Parameters ---
input ENUM_TIMEFRAMES           InpUpperTimeframe = PERIOD_M30;  // Timeframe for MAMA calculation
input double                    InpFastLimit    = 0.5;   // Fast Limit for Alpha
input double                    InpSlowLimit    = 0.05;  // Slow Limit for Alpha
input ENUM_APPLIED_PRICE_HA_ALL InpSourcePrice  = PRICE_CLOSE_STD;

//--- Indicator Buffers ---
double    BufferMAMA_MTF[];
double    BufferFAMA_MTF[];

//--- Global calculator object ---
CMAMACalculator *g_calculator;

//+------------------------------------------------------------------+
int OnInit()
  {
//--- Ensure the selected timeframe is higher than the current one
   if(InpUpperTimeframe <= Period())
     {
      Print("Error: The selected timeframe must be higher than the current chart timeframe.");
      return(INIT_FAILED);
     }

   SetIndexBuffer(0, BufferMAMA_MTF,  INDICATOR_DATA);
   SetIndexBuffer(1, BufferFAMA_MTF,  INDICATOR_DATA);
   ArraySetAsSeries(BufferMAMA_MTF,  false);
   ArraySetAsSeries(BufferFAMA_MTF,  false);
   PlotIndexSetDouble(0, PLOT_EMPTY_VALUE, EMPTY_VALUE);
   PlotIndexSetDouble(1, PLOT_EMPTY_VALUE, EMPTY_VALUE);

// --- Create an instance of our own calculator ---
   if(InpSourcePrice <= PRICE_HA_CLOSE)
     {
      g_calculator = new CMAMACalculator_HA();
     }
   else
     {
      g_calculator = new CMAMACalculator();
     }

   if(CheckPointer(g_calculator) == POINTER_INVALID || !g_calculator.Init(InpFastLimit, InpSlowLimit))
     {
      Print("Failed to create or initialize MAMA Calculator object.");
      return(INIT_FAILED);
     }

   IndicatorSetString(INDICATOR_SHORTNAME, StringFormat("MAMA MTF(%s)", EnumToString(InpUpperTimeframe)));
   PlotIndexSetInteger(0, PLOT_DRAW_BEGIN, 50);
   PlotIndexSetInteger(1, PLOT_DRAW_BEGIN, 50);
   IndicatorSetInteger(INDICATOR_DIGITS, _Digits);

   return(INIT_SUCCEEDED);
  }

//+------------------------------------------------------------------+
void OnDeinit(const int reason)
  {
   if(CheckPointer(g_calculator) != POINTER_INVALID)
      delete g_calculator;
  }

//+------------------------------------------------------------------+
int OnCalculate(const int rates_total, const int, 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 < 2 || CheckPointer(g_calculator) == POINTER_INVALID)
      return 0;

// 1. Get the number of bars on the higher timeframe
   int htf_rates_total = (int)SeriesInfoInteger(_Symbol, InpUpperTimeframe, SERIES_BARS_COUNT);
   if(htf_rates_total < 50) // MAMA warmup period
     {
      return 0; // Not enough data on HTF yet
     }

// 2. Copy all necessary data from the higher timeframe
   datetime htf_time[];
   double htf_open[], htf_high[], htf_low[], htf_close[];
   if(CopyTime(_Symbol, InpUpperTimeframe, 0, htf_rates_total, htf_time) <= 0 ||
      CopyOpen(_Symbol, InpUpperTimeframe, 0, htf_rates_total, htf_open) <= 0 ||
      CopyHigh(_Symbol, InpUpperTimeframe, 0, htf_rates_total, htf_high) <= 0 ||
      CopyLow(_Symbol, InpUpperTimeframe, 0, htf_rates_total, htf_low) <= 0 ||
      CopyClose(_Symbol, InpUpperTimeframe, 0, htf_rates_total, htf_close) <= 0)
     {
      return 0; // Data not fully ready
     }

// 3. Calculate MAMA/FAMA on the higher timeframe data
   double htf_mama_buffer[], htf_fama_buffer[];
   ArrayResize(htf_mama_buffer, htf_rates_total);
   ArrayResize(htf_fama_buffer, htf_rates_total);

   ENUM_APPLIED_PRICE price_type;
   if(InpSourcePrice <= PRICE_HA_CLOSE)
      price_type = (ENUM_APPLIED_PRICE)(-(int)InpSourcePrice);
   else
      price_type = (ENUM_APPLIED_PRICE)InpSourcePrice;

   g_calculator.Calculate(htf_rates_total, price_type, htf_open, htf_high, htf_low, htf_close, htf_mama_buffer, htf_fama_buffer);

// 4. Map the higher timeframe data to the current chart's bars
   ArraySetAsSeries(htf_mama_buffer, true);
   ArraySetAsSeries(htf_fama_buffer, true);
   ArraySetAsSeries(htf_time, true);
   ArraySetAsSeries(time, true);
   ArraySetAsSeries(BufferMAMA_MTF, true);
   ArraySetAsSeries(BufferFAMA_MTF, true);

   for(int i = 0; i < rates_total; i++)
     {
      int htf_bar_shift = iBarShift(_Symbol, InpUpperTimeframe, time[i]);
      if(htf_bar_shift < htf_rates_total && htf_bar_shift >= 0)
        {
         BufferMAMA_MTF[i] = htf_mama_buffer[htf_bar_shift];
         BufferFAMA_MTF[i] = htf_fama_buffer[htf_bar_shift];
        }
      else
        {
         BufferMAMA_MTF[i] = EMPTY_VALUE;
         BufferFAMA_MTF[i] = EMPTY_VALUE;
        }
     }

// Restore arrays to non-timeseries for stability
   ArraySetAsSeries(BufferMAMA_MTF, false);
   ArraySetAsSeries(BufferFAMA_MTF, false);
   ArraySetAsSeries(time, false);

   return(rates_total);
  }
//+------------------------------------------------------------------+
//+------------------------------------------------------------------+