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https://github.com/softwaredevelop/mql5.git
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Toh4iem9
133 lines
4.8 KiB
Plaintext
133 lines
4.8 KiB
Plaintext
//+------------------------------------------------------------------+
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//| Supertrend.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 "1.04" // Final stable version, logic aligned with Pine Script
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#property description "Supertrend Indicator for trend identification"
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//--- Indicator Window and Plot Properties ---
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#property indicator_chart_window
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#property indicator_buffers 5 // Supertrend, Color, ATR, UpperBand, LowerBand
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#property indicator_plots 1
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//--- Plot 1: Supertrend line
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#property indicator_label1 "Supertrend"
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#property indicator_type1 DRAW_COLOR_LINE
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#property indicator_color1 clrLimeGreen, clrTomato
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#property indicator_style1 STYLE_SOLID
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#property indicator_width1 2
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//--- Input Parameters ---
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input int InpAtrPeriod = 10;
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input double InpFactor = 3.0;
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//--- Indicator Buffers ---
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double BufferSupertrend[];
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double BufferColor[];
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double BufferATR[];
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double BufferUpperBand[];
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double BufferLowerBand[];
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//--- Global Variables ---
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int ExtAtrPeriod;
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double ExtFactor;
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int handle_atr;
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//+------------------------------------------------------------------+
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//| Custom indicator initialization function. |
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//+------------------------------------------------------------------+
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void OnInit()
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{
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ExtAtrPeriod = (InpAtrPeriod < 1) ? 1 : InpAtrPeriod;
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ExtFactor = (InpFactor <= 0) ? 3.0 : InpFactor;
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SetIndexBuffer(0, BufferSupertrend, INDICATOR_DATA);
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SetIndexBuffer(1, BufferColor, INDICATOR_COLOR_INDEX);
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SetIndexBuffer(2, BufferATR, INDICATOR_CALCULATIONS);
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SetIndexBuffer(3, BufferUpperBand, INDICATOR_CALCULATIONS);
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SetIndexBuffer(4, BufferLowerBand, INDICATOR_CALCULATIONS);
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ArraySetAsSeries(BufferSupertrend, false);
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ArraySetAsSeries(BufferColor, false);
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ArraySetAsSeries(BufferATR, false);
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ArraySetAsSeries(BufferUpperBand, false);
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ArraySetAsSeries(BufferLowerBand, false);
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handle_atr = iATR(_Symbol, _Period, ExtAtrPeriod);
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if(handle_atr == INVALID_HANDLE)
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Print("Error creating iATR handle.");
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IndicatorSetInteger(INDICATOR_DIGITS, _Digits);
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PlotIndexSetInteger(0, PLOT_DRAW_BEGIN, ExtAtrPeriod);
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IndicatorSetString(INDICATOR_SHORTNAME, StringFormat("Supertrend(%d, %.1f)", ExtAtrPeriod, ExtFactor));
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}
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//+------------------------------------------------------------------+
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//| Supertrend 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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if(rates_total < ExtAtrPeriod)
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return(0);
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//--- STEP 1: Get ATR values
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if(BarsCalculated(handle_atr) < rates_total)
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return(0);
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if(CopyBuffer(handle_atr, 0, 0, rates_total, BufferATR) <= 0)
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return(0);
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//--- STEP 2: Main calculation loop
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for(int i = 1; i < rates_total; i++)
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{
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double hl2 = (high[i] + low[i]) / 2.0;
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double upper_basic = hl2 + (ExtFactor * BufferATR[i]);
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double lower_basic = hl2 - (ExtFactor * BufferATR[i]);
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// --- Stair-step logic
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if(upper_basic < BufferUpperBand[i-1] || close[i-1] > BufferUpperBand[i-1])
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BufferUpperBand[i] = upper_basic;
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else
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BufferUpperBand[i] = BufferUpperBand[i-1];
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if(lower_basic > BufferLowerBand[i-1] || close[i-1] < BufferLowerBand[i-1])
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BufferLowerBand[i] = lower_basic;
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else
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BufferLowerBand[i] = BufferLowerBand[i-1];
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// --- Trend direction and final Supertrend value ---
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int trend = 0;
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if(BufferSupertrend[i-1] == BufferUpperBand[i-1])
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trend = (close[i] > BufferUpperBand[i]) ? 1 : -1;
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else
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trend = (close[i] < BufferLowerBand[i]) ? -1 : 1;
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if(trend == 1) // Uptrend
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{
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BufferSupertrend[i] = BufferLowerBand[i];
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BufferColor[i] = 0; // Green
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}
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else // Downtrend
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{
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BufferSupertrend[i] = BufferUpperBand[i];
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BufferColor[i] = 1; // Red
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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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//+------------------------------------------------------------------+
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