P&F_v2_alerts

//+--------------------------------------------------------------------------------------------+
//|   P&F_v2.mq4
//+--------------------------------------------------------------------------------------------+
#property indicator_chart_window

#property indicator_buffers 5
#property indicator_color1 Blue
#property indicator_color2 Blue
#property indicator_color3 Green
#property indicator_color4 Crimson
#property indicator_color5 EMPTY

extern int BoxSize = 20;
extern int Reversal = 3;

extern int     arrWidth= 0;
extern double  arrDistance= 0.5;

extern int ShowBars = 500;


extern bool    SoundAlert  = true;  
extern bool    BoxAlert    = true;
extern bool    EmailAlert  = false;
extern int     AlertOnBar  = 0;
extern string  soundfile   = "ok.wav";//alert alert2 ok.wav   ...etc

bool   UpTrendAlert=false, DownTrendAlert=false;
datetime alerttag;


double UpTrend[];
double DownTrend[];
double UpSignal[];
double DownSignal[];
double Trend[];

int init()
{
      
   IndicatorBuffers(5);
   
   SetIndexStyle(0,DRAW_LINE);
   SetIndexEmptyValue(0,0.0);
   SetIndexBuffer(0,UpTrend);
   
   SetIndexStyle(1,DRAW_LINE);
   SetIndexEmptyValue(1,0.0);
   SetIndexBuffer(1,DownTrend);
   
   SetIndexStyle(2,DRAW_ARROW,STYLE_SOLID,arrWidth);
   SetIndexArrow(2,233);
   SetIndexEmptyValue(2,0.0);
   SetIndexBuffer(2,UpSignal);
   
   SetIndexStyle(3,DRAW_ARROW,STYLE_SOLID,arrWidth);
   SetIndexArrow(3,234);
   SetIndexEmptyValue(3,0.0);
   SetIndexBuffer(3,DownSignal);
   
   SetIndexStyle(4,DRAW_NONE);
   SetIndexEmptyValue(4,0.0);
   SetIndexBuffer(4,Trend);
   
   return(0);
}

int deinit()
{
   return(0);
}

int start()
{
   
   int counted_bars=IndicatorCounted();
   if(counted_bars<0) return(-1); //---- check for possible errors
   if(counted_bars>0) counted_bars--; //---- last counted bar will be recounted
   
   for (int i=Bars-counted_bars;i>=0;i--)
   {

      double   Range = 0.0;
      for (int counter=i ;counter<=i+9;counter++) 
               Range += MathAbs(High[counter]-Low[counter]);
               Range /= 10;
               Range=Range*arrDistance;




      if (ShowBars == 0 || (ShowBars > 0 && i <= ShowBars))
      {
         if (Trend[i+1] == 0)
         {
            if (Low[i]+(BoxSize*Point) < High[i])
            {
               DownTrend[i] = Low[i];
               UpTrend[i] = High[i];
               Trend[i] = -1;
               DownSignal[i] = High[i]+Range;
            }
            else
            if (High[i]-(BoxSize*Point) > Low[i])
            {
               DownTrend[i] = Low[i];
               UpTrend[i] = High[i];
               Trend[i] = 1;
               UpSignal[i] = Low[i]-Range;
            }
            else
            {
               DownTrend[i] = DownTrend[i+1];
               UpTrend[i] = UpTrend[i+1];
               Trend[i] = Trend[i+1];
            }
         }
         else
         if (Trend[i+1] == -1)
         {
            if (Low[i]+(BoxSize*Point) < DownTrend[i+1])
            {
               DownTrend[i] = Low[i];
               UpTrend[i] = UpTrend[i+1];
               Trend[i] = Trend[i+1];
            }
            else
            if (High[i] > DownTrend[i+1]+((BoxSize*Point)*Reversal))
            {
               UpTrend[i] = High[i];
               DownTrend[i] = Low[i];
               Trend[i] = 1;
               UpSignal[i] = Low[i]-Range;
            }
            else
            {
               DownTrend[i] = DownTrend[i+1];
               UpTrend[i] = UpTrend[i+1];
               Trend[i] = Trend[i+1];
            }
         }
         else
         if (Trend[i+1] == 1)
         {
            if (High[i]-(BoxSize*Point) > UpTrend[i+1])
            {
                DownTrend[i] = DownTrend[i+1];
                UpTrend[i] = High[i];
                Trend[i] = Trend[i+1];
            }
            else
            if (Low[i] < UpTrend[i+1]-((BoxSize*Point)*Reversal))
            {
               UpTrend[i] = High[i];
               DownTrend[i] = Low[i];
               Trend[i] = -1;
               DownSignal[i] = High[i]+Range;
            }
            else
            {
               DownTrend[i] = DownTrend[i+1];
               UpTrend[i] = UpTrend[i+1];
               Trend[i] = Trend[i+1];
            }
         }
      }
              



//----
   string Message;
	Message = " "+Symbol()+" M"+Period()+" P&F:";
   int b=AlertOnBar;
   if ( UpSignal[b+1]==0.0  && UpSignal[b]!=0.0 && Volume[0]>1 && !UpTrendAlert && alerttag!=Time[0])
	  {
	  if ( BoxAlert )   Alert (Message," signal UP");  
	  if ( SoundAlert ) PlaySound(soundfile);
	  if ( EmailAlert ) SendMail ("From P&F",Message);
	  UpTrendAlert=true; DownTrendAlert=false; alerttag =Time[0];
	  } 
	 	  
	if ( DownSignal[b+1]==0.0 && DownSignal[b]!=0.0 && Volume[0]>1 && !DownTrendAlert && alerttag!=Time[0])
	  {
	  if ( BoxAlert )   Alert (Message," signal DOWN");  
	  if ( SoundAlert ) PlaySound(soundfile);
	  if ( EmailAlert ) SendMail ("From P&F",Message);
	  DownTrendAlert=true; UpTrendAlert=false; alerttag=Time[0];
	  } 	         
//----



   }

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