//+------------------------------------------------------------------+
//|                                         HighsLowsSignalAlert.mq4 |
//|         Copyright © 2006, Robert Hill                            |
//+------------------------------------------------------------------+

/*
  +------------------------------------------------------------------+
  | Allows you to enter a number and it will then show you at        |
  | which point that many higher highs/higher lows or                |
  | lower highs/lower lows candles occur.                            |
  | It also give an alert if the current bar has the                 |
  | required number of candles before it.                            |
  +------------------------------------------------------------------+
*/   
#property copyright "Copyright © 2006, Robert Hill"

#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 LawnGreen
#property indicator_color2 Red
#property indicator_width1 3
#property indicator_width2 3

extern bool SoundON=true;
extern int HowManyCandles = 3;

double TrendUp[];
double TrendDown[];
double alertTag;

//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicators
//   IndicatorBuffers(4);
   SetIndexStyle(0, DRAW_ARROW, EMPTY, 3);
   SetIndexArrow(0, 233);
   SetIndexBuffer(0, TrendUp);
   SetIndexStyle(1, DRAW_ARROW, EMPTY, 3);
   SetIndexArrow(1, 234);
   SetIndexBuffer(1, TrendDown);
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
//---- 

//----
   return(0);
  }


//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start() {
   int limit, i, counter;
   double Range, AvgRange;
   int HigherHighs,HigherLows;
   int LowerHighs,LowerLows;
   
   int counted_bars=IndicatorCounted();
//---- check for possible errors
   if(counted_bars<0) return(-1);
//---- last counted bar will be recounted
   if(counted_bars>0) counted_bars--;

   limit=Bars-counted_bars;
   
   for(i = 0; i <= limit; i++) {
   
      counter=i;
      Range=0;
      AvgRange=0;
      for (counter=i ;counter<=i+9;counter++)
      {
         AvgRange=AvgRange+MathAbs(High[counter]-Low[counter]);
      }
      Range=AvgRange/10;
      
      HigherHighs=0;
      HigherLows=0;
      LowerHighs=0;
      LowerLows=0;
      for (counter=i;counter<i+HowManyCandles;counter++)
      {
         if (High[counter] > High[counter+1]) HigherHighs++;
         if (Low[counter] > Low[counter+1]) HigherLows++;
         if (High[counter] < High[counter+1]) LowerHighs++;
         if (Low[counter] < Low[counter+1]) LowerLows++;
      }
      
      if (HigherHighs == HowManyCandles && HigherLows == HowManyCandles)
      {
         TrendUp[i] = Low[i] - Range*0.75;
         if ( alertTag!=Time[0])
         {
          PlaySound("news.wav");// buy wav
          Alert(Symbol(),"  M",Period(),HowManyCandles," HigherHighs/HigherLows");
         }
          alertTag = Time[0];
          
      }
      else if (LowerHighs == HowManyCandles && LowerLows == HowManyCandles)
      {
         TrendDown[i] = High[i] + Range*0.75;
         if ( alertTag!=Time[0])
         {
          PlaySound("news.wav"); //sell wav
           Alert(Symbol(),"  M",Period(),HowManyCandles," LowerHighs/LowerLows");
         }
          alertTag = Time[0];
      }
   }
   return(0);
}