fix: 3 duplicate trades in 1 second, London SELL fired against established bullish bias

NANDR_ORB_OB_EA.mq5

@@ -5,7 +5,7 @@
 //|  Based on: ORB-All-Sessions.pine + LuxAlgo Order Block Detector  |
 //+------------------------------------------------------------------+
 #property copyright "NANDR"
-#property version   "1.33"
+#property version   "1.34"
 #property strict
 
 #include <Trade\Trade.mqh>
@@ -90,6 +90,7 @@ input bool     InpWaitForRetest         = true;          // Wait for ORB Retest
 input int      InpBreakoutExpireBars    = 20;            // Bars Before Breakout Expires (0=never)
 input bool     InpUseOBRetestEntry      = true;          // OB Retest Entry (enter on OB boundary retest)
 input int      InpMaxRetestsPerSession  = 3;             // Max Retest Entries Per Session (per breakout)
+input bool     InpUseSessionBiasFilter  = true;          // Session Bias Filter: block signals against day bias
 
 // --- Lot Size & Risk ---
 input group "═══ Lot Size & Risk ═══"
@@ -155,19 +156,21 @@ struct SSession
    int      breakoutBarsAgo;
 
    int      tradesThisSession;
+   bool     retestFiredThisBar; // blocks duplicate entries on consecutive ticks within same bar
 
    void Reset()
    {
-      orbHigh        = 0;
+      orbHigh            = 0;
-      orbLow         = DBL_MAX;
+      orbLow             = DBL_MAX;
-      orbBarCount    = 0;
+      orbBarCount        = 0;
-      orbComplete    = false;
+      orbComplete        = false;
-      orbStartTime   = 0;
+      orbStartTime       = 0;
-      breakoutDir    = 0;
+      breakoutDir        = 0;
-      inBreakout     = false;
+      inBreakout         = false;
-      inRetest       = false;
+      inRetest           = false;
-      breakoutBarsAgo= 0;
+      breakoutBarsAgo    = 0;
-      tradesThisSession = 0;
+      tradesThisSession  = 0;
+      retestFiredThisBar = false;
    }
 };
 
@@ -209,6 +212,11 @@ SOrderBlock    g_BearOBs[];
 int            g_BullOBCount = 0;
 int            g_BearOBCount = 0;
 
+// Day bias: direction of the first confirmed ORB breakout of the day (0=none, 1=bull, -1=bear).
+// When InpUseSessionBiasFilter=true, subsequent session breakouts and all OB entries that
+// contradict this bias are suppressed, preventing counter-trend trades.
+int            g_GlobalBiasDir  = 0;
+
 // Daily stats
 datetime       g_LastDayReset   = 0;
 int            g_TodayTrades    = 0;
@@ -466,6 +474,10 @@ void UpdateORBSessions()
    double   bar1High = iHigh(g_Symbol, PERIOD_CURRENT, 1);
    double   bar1Low  = iLow(g_Symbol,  PERIOD_CURRENT, 1);
 
+   // New bar: clear per-bar retest flag so the next wick can trigger a fresh entry
+   for(int s = 0; s < g_SessionCount; s++)
+      g_Sessions[s].retestFiredThisBar = false;
+
    for(int s = 0; s < g_SessionCount; s++)
    {
       if(!g_Sessions[s].enabled) continue;
@@ -590,19 +602,35 @@ void DetectBreakouts()
 
       if(bullBO)
       {
+         // Bias filter: suppress if day bias is already bearish
+         if(InpUseSessionBiasFilter && g_GlobalBiasDir == -1)
+         {
+            PrintFormat("NANDR EA: [%s] Bullish breakout SUPPRESSED — day bias is BEARISH",
+                        g_Sessions[s].name);
+            continue;
+         }
          g_Sessions[s].breakoutDir    = 1;
          g_Sessions[s].inBreakout     = true;
          g_Sessions[s].breakoutBarsAgo= 0;
-         PrintFormat("NANDR EA: [%s] Bullish ORB breakout at %.2f",
+         if(g_GlobalBiasDir == 0) g_GlobalBiasDir = 1; // first breakout of the day sets bias
-                     g_Sessions[s].name, g_Sessions[s].orbHigh);
+         PrintFormat("NANDR EA: [%s] Bullish ORB breakout at %.2f  [DayBias=%d]",
+                     g_Sessions[s].name, g_Sessions[s].orbHigh, g_GlobalBiasDir);
       }
       else if(bearBO)
       {
+         // Bias filter: suppress if day bias is already bullish
+         if(InpUseSessionBiasFilter && g_GlobalBiasDir == 1)
+         {
+            PrintFormat("NANDR EA: [%s] Bearish breakout SUPPRESSED — day bias is BULLISH",
+                        g_Sessions[s].name);
+            continue;
+         }
          g_Sessions[s].breakoutDir    = -1;
          g_Sessions[s].inBreakout     = true;
          g_Sessions[s].breakoutBarsAgo= 0;
-         PrintFormat("NANDR EA: [%s] Bearish ORB breakout at %.2f",
+         if(g_GlobalBiasDir == 0) g_GlobalBiasDir = -1; // first breakout of the day sets bias
-                     g_Sessions[s].name, g_Sessions[s].orbLow);
+         PrintFormat("NANDR EA: [%s] Bearish ORB breakout at %.2f  [DayBias=%d]",
+                     g_Sessions[s].name, g_Sessions[s].orbLow, g_GlobalBiasDir);
       }
    }
 }
@@ -1056,6 +1084,10 @@ void CheckRetestEntriesTick()
 
          if(dir == 0) continue;
 
+         // One entry per wick touch per bar — prevents 3 duplicate trades on consecutive ticks
+         if(g_Sessions[s].retestFiredThisBar) continue;
+         g_Sessions[s].retestFiredThisBar = true;
+
          double obTop = 0, obBottom = 0;
          IsOBNearLevel(orbLevel, dir, obTop, obBottom);
          if(InpOBRequireConf && obTop == 0) continue;
@@ -1066,8 +1098,9 @@ void CheckRetestEntriesTick()
    if(!InpUseOBRetestEntry) return;
 
    // ── Bearish OB Retest → SELL at wick touch ───────────────────────
-   // Fires the moment the current bar's live high reaches the OB bottom.
+   // Suppressed when day bias is bullish (session takes priority).
-   // prev bar[1] (or current open) must have been at/below OB bottom.
+   if(InpUseSessionBiasFilter && g_GlobalBiasDir == 1) return;
+
    for(int i = 0; i < g_BearOBCount; i++)
    {
       if(!g_BearOBs[i].active || g_BearOBs[i].traded) continue;
@@ -1104,6 +1137,9 @@ void CheckRetestEntriesTick()
    }
 
    // ── Bullish OB Retest → BUY at wick touch ────────────────────────
+   // Suppressed when day bias is bearish (session takes priority).
+   if(InpUseSessionBiasFilter && g_GlobalBiasDir == -1) return;
+
    for(int i = 0; i < g_BullOBCount; i++)
    {
       if(!g_BullOBs[i].active || g_BullOBs[i].traded) continue;
@@ -1275,6 +1311,7 @@ void CheckDailyReset()
       g_TodayPnL       = 0;
       g_DayStartEquity = AccountInfoDouble(ACCOUNT_EQUITY);
       g_TradingHalted  = false;
+      g_GlobalBiasDir  = 0; // clear day bias — first session breakout will re-establish it
 
       // Reset all session ORB data for the new day
       for(int s = 0; s < g_SessionCount; s++)