FreelanceSections

Supply and Demand Trading Bot

MQL5 Experts Trading robot/indicator debugging

Specification

//+------------------------------------------------------------------+
//| Advanced Supply and Demand EA                                   |
//+------------------------------------------------------------------+
#property strict

// === Input parameters ===
input double LotSize = 0.1;
input int ZoneLookback = 30;
input int HigherTF = PERIOD_H1;
input int RSI_Period = 14;
input int RSI_Buy = 30;
input int RSI_Sell = 70;
input int ATR_Period = 14;
input double SL_ATR_Multiplier = 1.5;
input double TP_ATR_Multiplier = 3.0;
input int MaxTradesPerDay = 2;
input bool ShowZones = true;

// === Global variables ===
datetime lastTradeTime = 0;
double demandZone = 0;
double supplyZone = 0;
bool demandZoneActive = false;
bool supplyZoneActive = false;

//+------------------------------------------------------------------+
//| Initialization                                                  |
//+------------------------------------------------------------------+
int OnInit()
{
   Print("Advanced Supply and Demand EA Initialized");
   return(INIT_SUCCEEDED);
}

//+------------------------------------------------------------------+
//| Tick Function                                                    |
//+------------------------------------------------------------------+
void OnTick()
{
   static datetime lastBarTime = 0;
   if (Time[0] == lastBarTime) return;
   lastBarTime = Time[0];

   DetectZones();
   CheckEntryConditions();
}

//+------------------------------------------------------------------+
//| Zone Detection                                                   |
//+------------------------------------------------------------------+
void DetectZones()
{
   demandZone = 0;
   supplyZone = 0;
   demandZoneActive = false;
   supplyZoneActive = false;

   for (int i = 2; i < ZoneLookback; i++)
   {
      double body = MathAbs(Open[i] - Close[i]);
      double wickTop = High[i] - MathMax(Open[i], Close[i]);
      double wickBot = MathMin(Open[i], Close[i]) - Low[i];

      // Demand zone detection
      if (body > wickTop * 2 && Close[i] < Open[i] && Close[i+1] > Open[i+1])
      {
         demandZone = Low[i];
         demandZoneActive = true;
      }

      // Supply zone detection
      if (body > wickBot * 2 && Close[i] > Open[i] && Close[i+1] < Open[i+1])
      {
         supplyZone = High[i];
         supplyZoneActive = true;
      }
   }

   if (ShowZones)
   {
      DrawZone("DemandZone", demandZone, clrAqua);
      DrawZone("SupplyZone", supplyZone, clrOrangeRed);
   }
}

//+------------------------------------------------------------------+
//| Entry Conditions & Trade Logic                                   |
//+------------------------------------------------------------------+
void CheckEntryConditions()
{
   if (OrdersTotal() >= MaxTradesPerDay) return;

   double rsi = iRSI(Symbol(), PERIOD_M15, RSI_Period, PRICE_CLOSE, 0);
   double atr = iATR(Symbol(), PERIOD_M15, ATR_Period, 0);
   double ask = Ask;
   double bid = Bid;

   // BUY Condition
   if (demandZoneActive && bid <= demandZone + 10 * Point && rsi < RSI_Buy)
   {
      double sl = bid - SL_ATR_Multiplier * atr;
      double tp = bid + TP_ATR_Multiplier * atr;

      if (!OpenBuyOrder())
      {
         int buyTicket = OrderSend(Symbol(), OP_BUY, LotSize, ask, 2, sl, tp, "Buy Demand Zone", 0, clrAqua);
         if (buyTicket > 0) lastTradeTime = TimeCurrent();
      }
   }

   // SELL Condition
   if (supplyZoneActive && ask >= supplyZone - 10 * Point && rsi > RSI_Sell)
   {
      double sl = ask + SL_ATR_Multiplier * atr;
      double tp = ask - TP_ATR_Multiplier * atr;

      if (!OpenSellOrder())
      {
         int sellTicket = OrderSend(Symbol(), OP_SELL, LotSize, bid, 2, sl, tp, "Sell Supply Zone", 0, clrOrangeRed);
         if (sellTicket > 0) lastTradeTime = TimeCurrent();
      }
   }
}

//+------------------------------------------------------------------+
//| Check Open Buy Orders                                            |
//+------------------------------------------------------------------+
bool OpenBuyOrder()
{
   for (int i = 0; i < OrdersTotal(); i++)
   {
      if (OrderSelect(i, SELECT_BY_POS, MODE_TRADES))
      {
         if (OrderSymbol() == Symbol() && OrderType() == OP_BUY)
            return true;
      }
   }
   return false;
}

//+------------------------------------------------------------------+
//| Check Open Sell Orders                                           |
//+------------------------------------------------------------------+
bool OpenSellOrder()
{
   for (int i = 0; i < OrdersTotal(); i++)
   {
      if (OrderSelect(i, SELECT_BY_POS, MODE_TRADES))
      {
         if (OrderSymbol() == Symbol() && OrderType() == OP_SELL)
            return true;
      }
   }
   return false;
}

//+------------------------------------------------------------------+
//| Draw Supply/Demand Zones                                         |
//+------------------------------------------------------------------+
void DrawZone(string name, double level, color clr)
{
   if (level == 0) return;

   string objName = name + "_rect";
   if (!ObjectCreate(objName, OBJ_RECTANGLE, 0, Time[0], level, Time[ZoneLookback], level + 10 * Point))
   {
      ObjectMove(objName, 0, Time[0], level);
      ObjectMove(objName, 1, Time[ZoneLookback], level + 10 * Point);
   }

   ObjectSet(objName, OBJPROP_COLOR, clr);
   ObjectSet(objName, OBJPROP_STYLE, STYLE_SOLID);
   ObjectSet(objName, OBJPROP_BACK, true);
}

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