Matt Corcoran
86 lines
2.9 KiB
Plaintext
86 lines
2.9 KiB
Plaintext
#include <MyLibs/Utils/SignalStateTracker.mqh>
|
|
|
|
// This class manages a collection of SignalStateTracker instances — one per symbol.
|
|
// It allows you to track signals separately for each symbol in a multi-symbol EA.
|
|
class MultiSymbolSignalTracker {
|
|
private:
|
|
// Struct to hold one (symbol → tracker) mapping
|
|
struct SymbolTracker {
|
|
string symbol; // Symbol name (e.g. "EURUSD", "HSI")
|
|
SignalStateTracker* tracker; // Pointer to the signal tracker for that symbol
|
|
};
|
|
|
|
SymbolTracker trackers[]; // Dynamic array of symbol-tracker pairs
|
|
|
|
// Helper function: Find the index of the given symbol in the array
|
|
int find_index(const string& symbol) {
|
|
for (int i = 0; i < ArraySize(trackers); i++) {
|
|
if (trackers[i].symbol == symbol) return i; // Found symbol, return its index
|
|
}
|
|
return -1; // Not found
|
|
}
|
|
|
|
public:
|
|
// Destructor: automatically called when this object is destroyed (e.g. at EA shutdown)
|
|
~MultiSymbolSignalTracker() {
|
|
clear(); // Clean up memory when done
|
|
}
|
|
|
|
// Returns the SignalStateTracker for the given symbol.
|
|
// If it doesn't exist yet, it creates one and stores it.
|
|
SignalStateTracker* get_tracker(const string& symbol) {
|
|
int idx = find_index(symbol);
|
|
if (idx != -1) return trackers[idx].tracker; // Tracker already exists — return it
|
|
|
|
// If not found, create a new tracker for this symbol
|
|
SignalStateTracker* tracker = new SignalStateTracker();
|
|
|
|
SymbolTracker item;
|
|
item.symbol = symbol;
|
|
item.tracker = tracker;
|
|
|
|
// Add new item to dynamic array
|
|
ArrayResize(trackers, ArraySize(trackers) + 1);
|
|
trackers[ArraySize(trackers) - 1] = item;
|
|
|
|
return tracker;
|
|
}
|
|
|
|
// Deletes all trackers and resets the array.
|
|
// Should be called in OnDeinit() to free memory.
|
|
void clear() {
|
|
for (int i = 0; i < ArraySize(trackers); i++) {
|
|
delete trackers[i].tracker; // Manually free each dynamically created tracker
|
|
}
|
|
ArrayResize(trackers, 0); // Reset array to empty
|
|
}
|
|
};
|
|
|
|
|
|
/* ---------------------------------------------------------------------------
|
|
Example usage in an EA:
|
|
---------------------------------------------------------------------------
|
|
|
|
// Declare the tracker globally (outside OnTick/OnTimer)
|
|
MultiSymbolSignalTracker track_trigger;
|
|
|
|
// Inside your strategy() or OnTick():
|
|
void strategy(string symbol, ...) {
|
|
bool trig_long = ...; // Your signal logic
|
|
bool trig_short = ...;
|
|
|
|
// Update the signal tracker for this symbol
|
|
track_trigger.get_tracker(symbol).update_signal(trig_long, trig_short);
|
|
|
|
// Example: Check if a recent long signal occurred
|
|
if (track_trigger.get_tracker(symbol).long_signal_recent(5)) {
|
|
// Do something like open a trade
|
|
}
|
|
}
|
|
|
|
// In OnDeinit():
|
|
void OnDeinit(const int reason) {
|
|
track_trigger.clear(); // Clean up memory
|
|
}
|
|
|
|
*/ |