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