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//+------------------------------------------------------------------+
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//| Blau_Ergodic_SMI_HeikinAshi.mq5 |
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//| Copyright 2025, xxxxxxxx |
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//| |
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//+------------------------------------------------------------------+
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#property copyright "Copyright 2025, xxxxxxxx"
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#property link ""
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#property version "1.00"
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#property description "Ergodic SMI on Heikin Ashi data, with a signal line."
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#include <MyIncludes\HeikinAshi_Tools.mqh>
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//--- Indicator Window and Plot Properties ---
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#property indicator_separate_window
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#property indicator_buffers 2 // SMI and Signal Line
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#property indicator_plots 2
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#property indicator_type1 DRAW_LINE
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#property indicator_color1 clrDodgerBlue
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#property indicator_label1 "HA_Ergodic_SMI"
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#property indicator_type2 DRAW_LINE
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#property indicator_color2 clrOrangeRed
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#property indicator_label2 "HA_Signal"
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#property indicator_style2 STYLE_DOT
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#property indicator_level1 -40.0
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#property indicator_level2 40.0
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#property indicator_level3 0.0
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#property indicator_levelstyle STYLE_DOT
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//--- Input Parameters ---
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input int InpStochPeriod = 5;
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input int InpSlowPeriod = 20;
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input int InpFastPeriod = 5;
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input group "Signal Line Settings"
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input int InpSignalPeriod = 5;
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input ENUM_MA_METHOD InpSignalMAType = MODE_EMA;
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//--- Indicator Buffers ---
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double BufferSMI[];
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double BufferSignal[];
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//--- Global Objects and Variables ---
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int g_ExtStochPeriod, g_ExtSlowPeriod, g_ExtFastPeriod, g_ExtSignalPeriod;
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CHeikinAshi_Calculator *g_ha_calculator;
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//--- Forward declarations for helper functions ---
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double Highest(const double &array[], int period, int current_pos);
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double Lowest(const double &array[], int period, int current_pos);
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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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g_ExtStochPeriod = (InpStochPeriod < 1) ? 1 : InpStochPeriod;
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g_ExtSlowPeriod = (InpSlowPeriod < 1) ? 1 : InpSlowPeriod;
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g_ExtFastPeriod = (InpFastPeriod < 1) ? 1 : InpFastPeriod;
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g_ExtSignalPeriod = (InpSignalPeriod < 1) ? 1 : InpSignalPeriod;
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SetIndexBuffer(0, BufferSMI, INDICATOR_DATA);
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SetIndexBuffer(1, BufferSignal, INDICATOR_DATA);
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ArraySetAsSeries(BufferSMI, false);
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ArraySetAsSeries(BufferSignal, false);
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int smi_draw_begin = g_ExtStochPeriod + g_ExtSlowPeriod + g_ExtFastPeriod - 2;
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PlotIndexSetInteger(0, PLOT_DRAW_BEGIN, smi_draw_begin);
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PlotIndexSetInteger(1, PLOT_DRAW_BEGIN, smi_draw_begin + g_ExtSignalPeriod - 1);
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IndicatorSetString(INDICATOR_SHORTNAME, StringFormat("HA_Ergodic_SMI(%d,%d,%d)", g_ExtStochPeriod, g_ExtSlowPeriod, g_ExtFastPeriod));
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IndicatorSetInteger(INDICATOR_DIGITS, 2);
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g_ha_calculator = new CHeikinAshi_Calculator();
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if(CheckPointer(g_ha_calculator) == POINTER_INVALID)
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{
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Print("Error creating CHeikinAshi_Calculator object");
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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_ha_calculator) != POINTER_INVALID)
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{
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delete g_ha_calculator;
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g_ha_calculator = NULL;
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}
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}
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//+------------------------------------------------------------------+
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//| Ergodic SMI on Heikin Ashi calculation function. |
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//+------------------------------------------------------------------+
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int OnCalculate(const int rates_total,
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const int prev_calculated,
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const datetime &time[],
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const double &open[],
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const double &high[],
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const double &low[],
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const double &close[],
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const long &tick_volume[],
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const long &volume[],
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const int &spread[])
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{
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int start_pos = g_ExtStochPeriod + g_ExtSlowPeriod + g_ExtFastPeriod + g_ExtSignalPeriod - 2;
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if(rates_total <= start_pos)
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return(0);
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//--- Intermediate Heikin Ashi Buffers
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double ha_open[], ha_high[], ha_low[], ha_close[];
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ArrayResize(ha_open, rates_total);
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ArrayResize(ha_high, rates_total);
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ArrayResize(ha_low, rates_total);
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ArrayResize(ha_close, rates_total);
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//--- STEP 1: Calculate Heikin Ashi bars
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g_ha_calculator.Calculate(rates_total, open, high, low, close, ha_open, ha_high, ha_low, ha_close);
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//--- STEP 2: Calculate Stochastic Momentum (SM) and Range on HA data
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double sm[], range[];
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ArrayResize(sm, rates_total);
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ArrayResize(range, rates_total);
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for(int i = g_ExtStochPeriod - 1; i < rates_total; i++)
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{
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double highest_ha_high = Highest(ha_high, g_ExtStochPeriod, i);
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double lowest_ha_low = Lowest(ha_low, g_ExtStochPeriod, i);
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sm[i] = ha_close[i] - (highest_ha_high + lowest_ha_low) / 2.0;
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range[i] = highest_ha_high - lowest_ha_low;
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}
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//--- STEP 3: First EMA Smoothing (Slow Period)
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double ema1_sm[], ema1_range[];
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ArrayResize(ema1_sm, rates_total);
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ArrayResize(ema1_range, rates_total);
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double pr_slow = 2.0 / (g_ExtSlowPeriod + 1.0);
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int ema1_start_pos = g_ExtStochPeriod + g_ExtSlowPeriod - 2;
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for(int i = ema1_start_pos; i < rates_total; i++)
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{
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if(i == ema1_start_pos)
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{
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double sum_sm=0, sum_range=0;
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for(int j=0; j<g_ExtSlowPeriod; j++)
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{
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sum_sm += sm[i-j];
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sum_range += range[i-j];
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}
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ema1_sm[i] = sum_sm / g_ExtSlowPeriod;
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ema1_range[i] = sum_range / g_ExtSlowPeriod;
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}
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else
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{
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ema1_sm[i] = sm[i] * pr_slow + ema1_sm[i-1] * (1.0 - pr_slow);
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ema1_range[i] = range[i] * pr_slow + ema1_range[i-1] * (1.0 - pr_slow);
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}
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}
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//--- STEP 4: Second EMA Smoothing (Fast Period)
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double ema2_sm[], ema2_range[];
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ArrayResize(ema2_sm, rates_total);
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ArrayResize(ema2_range, rates_total);
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double pr_fast = 2.0 / (g_ExtFastPeriod + 1.0);
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int ema2_start_pos = ema1_start_pos + g_ExtFastPeriod - 1;
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for(int i = ema2_start_pos; i < rates_total; i++)
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{
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if(i == ema2_start_pos)
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{
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double sum_ema1=0, sum_range_ema1=0;
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for(int j=0; j<g_ExtFastPeriod; j++)
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{
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sum_ema1 += ema1_sm[i-j];
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sum_range_ema1 += ema1_range[i-j];
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}
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ema2_sm[i] = sum_ema1 / g_ExtFastPeriod;
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ema2_range[i] = sum_range_ema1 / g_ExtFastPeriod;
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}
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else
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{
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ema2_sm[i] = ema1_sm[i] * pr_fast + ema2_sm[i-1] * (1.0 - pr_fast);
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ema2_range[i] = ema1_range[i] * pr_fast + ema2_range[i-1] * (1.0 - pr_fast);
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}
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}
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//--- STEP 5: Calculate final SMI value
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for(int i = ema2_start_pos; i < rates_total; i++)
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{
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if(ema2_range[i] != 0)
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{
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BufferSMI[i] = 100 * (ema2_sm[i] / (ema2_range[i] / 2.0));
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}
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}
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//--- STEP 6: Calculate the Signal Line
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int signal_start_pos = ema2_start_pos + g_ExtSignalPeriod - 1;
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for(int i = signal_start_pos; i < rates_total; i++)
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{
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// --- FIX: Full, robust switch block for all MA types ---
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switch(InpSignalMAType)
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{
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case MODE_EMA:
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case MODE_SMMA:
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if(i == signal_start_pos)
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{
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double sum=0;
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for(int j=0; j<g_ExtSignalPeriod; j++)
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sum+=BufferSMI[i-j];
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BufferSignal[i] = sum/g_ExtSignalPeriod;
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}
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else
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{
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if(InpSignalMAType == MODE_EMA)
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{
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double pr=2.0/(g_ExtSignalPeriod+1.0);
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BufferSignal[i] = BufferSMI[i]*pr + BufferSignal[i-1]*(1.0-pr);
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}
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else
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BufferSignal[i] = (BufferSignal[i-1]*(g_ExtSignalPeriod-1)+BufferSMI[i])/g_ExtSignalPeriod;
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}
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break;
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case MODE_LWMA:
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{
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double lwma_sum=0, weight_sum=0;
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for(int j=0; j<g_ExtSignalPeriod; j++)
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{
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int weight=g_ExtSignalPeriod-j;
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lwma_sum+=BufferSMI[i-j]*weight;
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weight_sum+=weight;
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}
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if(weight_sum>0)
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BufferSignal[i]=lwma_sum/weight_sum;
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}
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break;
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default: // MODE_SMA
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{
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double sum=0;
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for(int j=0; j<g_ExtSignalPeriod; j++)
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sum+=BufferSMI[i-j];
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BufferSignal[i] = sum/g_ExtSignalPeriod;
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}
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break;
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}
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}
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return(rates_total);
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}
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//+------------------------------------------------------------------+
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//| Finds the highest value in a given period of an array. |
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//+------------------------------------------------------------------+
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double Highest(const double &array[], int period, int current_pos)
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{
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double res = array[current_pos];
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for(int i = 1; i < period; i++)
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{
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if(res < array[current_pos - i])
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res = array[current_pos - i];
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}
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return(res);
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}
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//+------------------------------------------------------------------+
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//| Finds the lowest value in a given period of an array. |
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//+------------------------------------------------------------------+
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double Lowest(const double &array[], int period, int current_pos)
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{
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double res = array[current_pos];
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for(int i = 1; i < period; i++)
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{
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if(res > array[current_pos - i])
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res = array[current_pos - i];
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}
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return(res);
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}
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//+------------------------------------------------------------------+
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//+------------------------------------------------------------------+
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