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mql5/Indicators/MyIndicators/Quant/LLD_Pro.mq5
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//+------------------------------------------------------------------+
//| LLD_Pro.mq5 |
//| Copyright 2026, xxxxxxxx|
//+------------------------------------------------------------------+
#property copyright "Copyright 2026, xxxxxxxx"
#property version "1.60" // Added real-time tick-by-tick calculations
#property description "Lead-Lag Dominance Index (LLDI) with live-updating tick engines"
#property indicator_separate_window
#property indicator_buffers 3
#property indicator_plots 2
//--- Plot 1: Lead-Lag Dominance Index (LLDI)
#property indicator_label1 "LLDI"
#property indicator_type1 DRAW_COLOR_HISTOGRAM
#property indicator_color1 clrDodgerBlue, clrCrimson, clrGray
#property indicator_style1 STYLE_SOLID
#property indicator_width1 3
//--- Plot 2: Optimal Lead Lag (OLL)
#property indicator_label2 "Optimal Lag"
#property indicator_type2 DRAW_NONE // Hidden from chart scale, fully active in Data Window/Tooltips
#include <MyIncludes\LLD_Calculator.mqh>
//--- Input Parameters ---
input string InpSecondSymbol = "BTCUSD"; // Comparison Symbol
input int InpWindowSize = 50; // Rolling Correlation Window (Bars)
input int InpMaxLag = 10; // Maximum Phase Shift (Lags)
//--- Buffers ---
double BufferLLDI[];
double BufferColors[];
double BufferLag[];
//--- Aligned secondary symbol close prices array
double g_close_B[];
//--- Calculator Engine Pointer
CLeadLagDominanceCalculator *g_calculator;
//--- Global states for weekend/asynchronous loading
bool g_data_synced = false;
string g_obj_prefix = "";
//+------------------------------------------------------------------+
//| EnsureDataReady (Aggressive history sync helper) |
//+------------------------------------------------------------------+
bool EnsureDataReady(const string symbol, const ENUM_TIMEFRAMES timeframe, const int required_bars)
{
ResetLastError();
if(!SymbolInfoInteger(symbol, SYMBOL_SELECT))
{
SymbolSelect(symbol, true);
}
datetime times[];
int copied = CopyTime(symbol, timeframe, 0, required_bars, times);
if(copied < required_bars)
{
int series_bars = (int)SeriesInfoInteger(symbol, timeframe, SERIES_BARS_COUNT);
PrintFormat("LLD Pro: Syncing %s %s... Copied: %d/%d. Available in Terminal: %d",
symbol, EnumToString(timeframe), copied, required_bars, series_bars);
return false;
}
return true;
}
//+------------------------------------------------------------------+
//| UpdateStatusLabel |
//| Renders an institutional colored text summary with live precision|
//+------------------------------------------------------------------+
void UpdateStatusLabel(int subwindow, double last_lldi, double last_lag)
{
string name = g_obj_prefix + "Status";
if(ObjectFind(0, name) < 0)
{
ObjectCreate(0, name, OBJ_LABEL, subwindow, 0, 0);
ObjectSetInteger(0, name, OBJPROP_CORNER, CORNER_LEFT_UPPER);
ObjectSetInteger(0, name, OBJPROP_XDISTANCE, 10);
ObjectSetInteger(0, name, OBJPROP_YDISTANCE, 15);
ObjectSetString(0, name, OBJPROP_FONT, "Trebuchet MS");
ObjectSetInteger(0, name, OBJPROP_FONTSIZE, 10);
}
string dominance_text = "";
color text_color = clrGray;
//--- Convert double values to strings first (guarantees 100% stable MT5 output)
string str_lag = DoubleToString(MathAbs(last_lag), 0);
string str_strength = DoubleToString(MathAbs(last_lldi), 4);
if(last_lldi > 0.02)
{
dominance_text = StringFormat("REGIME: %s LEADS %s | Lead Time: %s bars | Strength: %s",
InpSecondSymbol, _Symbol, str_lag, str_strength);
text_color = clrDodgerBlue;
}
else
if(last_lldi < -0.02)
{
dominance_text = StringFormat("REGIME: %s LEADS %s | Lead Time: %s bars | Strength: %s",
_Symbol, InpSecondSymbol, str_lag, str_strength);
text_color = clrCrimson;
}
else
{
dominance_text = StringFormat("REGIME: SYMMETRICAL / CO-DEPENDENT | Difference: %s", str_strength);
text_color = clrGray;
}
ObjectSetString(0, name, OBJPROP_TEXT, dominance_text);
ObjectSetInteger(0, name, OBJPROP_COLOR, text_color);
}
//+------------------------------------------------------------------+
//| OnInit |
//+------------------------------------------------------------------+
int OnInit()
{
g_data_synced = false;
g_obj_prefix = StringFormat("LLD_%x_", ChartID());
//--- Bind indicator buffers
SetIndexBuffer(0, BufferLLDI, INDICATOR_DATA);
SetIndexBuffer(1, BufferColors, INDICATOR_COLOR_INDEX);
SetIndexBuffer(2, BufferLag, INDICATOR_DATA);
ArraySetAsSeries(BufferLLDI, false);
ArraySetAsSeries(BufferColors, false);
ArraySetAsSeries(BufferLag, false);
//--- Clean stale objects
ObjectsDeleteAll(0, g_obj_prefix);
//--- Dynamic Engine Allocation
g_calculator = new CLeadLagDominanceCalculator();
if(CheckPointer(g_calculator) == POINTER_INVALID || !g_calculator.Init(InpWindowSize, InpMaxLag))
{
Print("LLD System: Failed to initialize Engine.");
return(INIT_FAILED);
}
//--- Check secondary symbol parameter
if(InpSecondSymbol == "" || InpSecondSymbol == NULL)
{
Print("LLD System: Invalid secondary comparison symbol.");
return(INIT_FAILED);
}
string short_name = StringFormat("LLDI(%s, %d, %d)", InpSecondSymbol, InpWindowSize, InpMaxLag);
IndicatorSetString(INDICATOR_SHORTNAME, short_name);
IndicatorSetInteger(INDICATOR_DIGITS, 4);
//--- Initialize 1-second timer for weekend/async chart refreshes
EventSetTimer(1);
return(INIT_SUCCEEDED);
}
//+------------------------------------------------------------------+
//| OnDeinit |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
{
EventKillTimer();
ObjectsDeleteAll(0, g_obj_prefix);
if(CheckPointer(g_calculator) != POINTER_INVALID)
{
delete g_calculator;
}
}
//+------------------------------------------------------------------+
//| OnCalculate |
//+------------------------------------------------------------------+
int OnCalculate(const int rates_total,
const int prev_calculated,
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[])
{
//--- Ensure secondary symbol history is ready
int required_bars = InpWindowSize + InpMaxLag + 5;
if(!EnsureDataReady(InpSecondSymbol, _Period, required_bars))
{
g_data_synced = false;
return 0; // Wait for next tick or timer event
}
g_data_synced = true;
//--- 1. Bulletproof iClose & iBarShift Time Synchronization Loop
ArrayResize(g_close_B, rates_total);
int loop_start = (prev_calculated == 0) ? 0 : prev_calculated - 1;
if(loop_start < 0)
loop_start = 0;
for(int i = loop_start; i < rates_total; i++)
{
int shift = iBarShift(InpSecondSymbol, _Period, time[i], false);
if(shift >= 0)
{
g_close_B[i] = iClose(InpSecondSymbol, _Period, shift);
}
else
{
g_close_B[i] = (i > 0) ? g_close_B[i-1] : close[i];
}
}
//--- 2. Fix: Force incremental update on the current live bar on every single tick
int start_index = (prev_calculated == 0) ? 0 : prev_calculated - 1;
//--- Run mathematical engine calculations
if(!g_calculator.CalculateDominance(rates_total, start_index, close, g_close_B, BufferLLDI, BufferLag))
{
return 0;
}
//--- 3. Colorize the histogram based on Dominance regime
int start_pos = InpWindowSize + InpMaxLag + 1;
int loop_start_color = MathMax(start_pos, prev_calculated - 1);
for(int i = loop_start_color; i < rates_total; i++)
{
if(BufferLLDI[i] > 0.02)
{
BufferColors[i] = 0.0; // Index 0: DodgerBlue (Second Symbol leads)
}
else
if(BufferLLDI[i] < -0.02)
{
BufferColors[i] = 1.0; // Index 1: Crimson (Chart Symbol leads)
}
else
{
BufferColors[i] = 2.0; // Index 2: Gray (Tied / Symmetrical)
}
}
//--- 4. Update status label with precise real-time values
int subwindow = ChartWindowFind();
if(subwindow >= 0 && rates_total > 0)
{
UpdateStatusLabel(subwindow, BufferLLDI[rates_total - 1], BufferLag[rates_total - 1]);
}
return(rates_total);
}
//+------------------------------------------------------------------+
//| OnTimer |
//| Handles weekend loading checks and force-redraws when ready |
//+------------------------------------------------------------------+
void OnTimer()
{
if(!g_data_synced)
{
int required_bars = InpWindowSize + InpMaxLag + 5;
if(EnsureDataReady(InpSecondSymbol, _Period, required_bars))
{
g_data_synced = true;
ChartRedraw(); // Force MT5 to invoke OnCalculate
}
}
}
//+------------------------------------------------------------------+
//+------------------------------------------------------------------+