Extronpro/Scalping range pro

//+------------------------------------------------------------------+
//| Expert: Strong Rejection + Confirmation EA                       |
//+------------------------------------------------------------------+
#property strict

input double WickToBodyRatio = 2.0;     // Wick must be >= body * ratio
input double BodyMinPercent  = 0.10;    // Body at least 10% of total range
input double ConfirmFactor   = 1.0;     // Confirmation candle body multiplier

//--- check if candle is a strong rejection (bullish or bearish)
int CheckRejection(int i)
{
   double open  = Open[i];
   double close = Close[i];
   double high  = High[i];
   double low   = Low[i];

   double body  = MathAbs(close - open);
   double range = high - low;

   if(range == 0) return 0;

   double upper_wick = high - MathMax(open, close);
   double lower_wick = MathMin(open, close) - low;

   // body must be small relative to full candle
   if(body < range * BodyMinPercent)
      return 0;

   // bullish rejection (long lower wick)
   if(lower_wick >= body * WickToBodyRatio && close > open)
      return 1;

   // bearish rejection (long upper wick)
   if(upper_wick >= body * WickToBodyRatio && close < open)
      return -1;

   return 0;
}

//--- check confirmation candle
bool CheckConfirmation(int dir)
{
   double open1  = Open[1];
   double close1 = Close[1];
   double open0  = Open[0];
   double close0 = Close[0];

   double body0 = MathAbs(close0 - open0);
   double body1 = MathAbs(close1 - open1);

   // confirmation must be same direction & stronger
   if(dir == 1)   // bullish
   {
      if(close0 > open0 && body0 >= body1 * ConfirmFactor)
         return true;
   }
   else if(dir == -1) // bearish
   {
      if(close0 < open0 && body0 >= body1 * ConfirmFactor)
         return true;
   }

   return false;
}

//+------------------------------------------------------------------+
int OnTick()
{
   if(Bars < 5) return 0;

   // Check candle #1 (closed) for rejection
   int direction = CheckRejection(1);
   if(direction == 0) return 0;

   // Check candle #0 for confirmation
   if(!CheckConfirmation(direction)) return 0;

   //--- Avoid multiple orders
   if(PositionsTotal() == 0)
   {
      if(direction == 1)
      {
         // BUY
         trade.Buy(0.10, _Symbol);
      }
      else if(direction == -1)
      {
         // SELL
         trade.Sell(0.10, _Symbol);
      }
   }

   return 0;
}
//+------------------------------------------------------------------+