111 lignes
3,9 Kio
MQL5
111 lignes
3,9 Kio
MQL5
//+------------------------------------------------------------------+
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//| SMA.Indicator.Test.mq5 |
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//+------------------------------------------------------------------+
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#property indicator_chart_window
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#property indicator_buffers 1
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#property indicator_plots 1
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// Define visual plot properties
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#property indicator_label1 "Streaming_SMA"
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#property indicator_type1 DRAW_LINE
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#property indicator_color1 clrDodgerBlue
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#property indicator_style1 STYLE_SOLID
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#property indicator_width1 2
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#include "..\\Indicators\\SMA.mqh"
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// Input parameter to control the window size dynamically
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input int InpPeriod = 20; // SMA Period
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// Instantiate the encapsulated SMA object globally
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SMA g_sma;
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// Temporary source struct required by the updated class API
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Source g_src;
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// Standard MQL5 dynamic indicator plotting array
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double g_plotBuffer[];
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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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// 1. Configure the SMA instance
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g_sma.SetParameters(InpPeriod);
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// 2. Initialize internal components via overridden lifecycle hook
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if(!g_sma.Init())
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{
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Print("FAIL: SMA Component Initialization failed.");
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return(INIT_FAILED);
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}
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// 3. Bind raw array to the MT5 indicator core execution engine
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SetIndexBuffer(0, g_plotBuffer, INDICATOR_DATA);
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PlotIndexSetInteger(0, PLOT_DRAW_BEGIN, InpPeriod - 1);
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PrintFormat("PASS: SMA Pipeline Initialized with Period: %d", InpPeriod);
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return(INIT_SUCCEEDED);
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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 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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// Block processing if chart history contains fewer bars than our period
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if(rates_total < InpPeriod)
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return(0);
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// Establish historical limit loop boundaries
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int limit = prev_calculated > 0 ? prev_calculated - 1 : 0;
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// Handle full recalculation environments cleanly
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if(limit == 0)
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{
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g_sma.Reset(); // Falls back to clearing components
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}
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// --- MAIN PIPELINE LOOP ---
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for(int i = limit; i < rates_total && !_StopFlag; i++)
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{
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// Pack the tick/bar context into the expected struct signature
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g_src.time = time[i];
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g_src.value = close[i];
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// Update the complete indicator state machine
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g_sma.Update(g_src);
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// Read the inverted output index from the container and map to MT5 chart index
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// Since i is ascending here, we always fetch the newest sample (offset 0)
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g_plotBuffer[i] = g_sma.GetValue(0, SMA::MAIN);
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if(i == rates_total - 2)
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{
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for(int j = 0; j < InpPeriod && i - j >= 0; j++)
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{
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PrintFormat("g_plotBuffer[%i] = %f, g_sma.GetValue(%i, SMA::MAIN) = %f, equal? = %s",
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i - j, g_plotBuffer[i - j], j, g_sma.GetValue(j, SMA::MAIN), g_plotBuffer[i - j] == g_sma.GetValue(j, SMA::MAIN) ? "True" : "False");
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}
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}
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else if(i == rates_total - 1)
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{
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int j = 0;
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Comment(StringFormat("g_plotBuffer[%i] = %f, g_sma.GetValue(%i, SMA::MAIN) = %f, equal? = %s",
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i - j, g_plotBuffer[i - j], j, g_sma.GetValue(j, SMA::MAIN), g_plotBuffer[i - j] == g_sma.GetValue(j, SMA::MAIN) ? "True" : "False"));
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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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