/* 
original formula)
WH:=HHV(HIGH,5);
WL:=LLV(LOW,5);

//WRD:=(( HHV( WH,36 )-c ) /( HHV(WH,36 ) - LLV( WL,36) ) ) *- 100,

//WDo:=WRD+50;

//WU:=IF(WDo>0,WDo,0);
//WD:=IF(WDo<0,WDo,0);
//{- this will give you the william's when it is below zero and it is plotted red}
//LN:=0;

*/

#property indicator_separate_window
#property indicator_buffers 3
#property indicator_color1 LimeGreen
#property indicator_color2 Red
#property indicator_color3 Gray
#property indicator_maximum 50
#property indicator_minimum -50
#property indicator_level1 0
#property indicator_level2 15
#property indicator_level3 -15
//---- input parameters


//---- buffers

double WU[],WD[],W[],Zero[];
int Ssw=0,Bsw=0;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
   string short_name;
//---- 3 additional buffers are used for counting.
   IndicatorBuffers(4);
   SetIndexBuffer(3,W);
//---- indicator lines
   SetIndexStyle(0,DRAW_HISTOGRAM,0,3);
   SetIndexBuffer(0,WU);
   SetIndexStyle(1,DRAW_HISTOGRAM,0,3);
   SetIndexBuffer(1,WD);
      SetIndexStyle(2,DRAW_LINE,0,2);
   SetIndexBuffer(2,Zero);
//---- name for DataWindow and indicator subwindow label
   short_name="William%R36 With Alert";
   IndicatorShortName(short_name);


//---- indicator lines
  

//----
   SetIndexDrawBegin(0,40);
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| BSPVolume                                       
//+------------------------------------------------------------------+
int start()
 {
   int    i,k,counted_bars=IndicatorCounted();
   
   if(Bars<=40) return(0);
//---- initial zero
/* 
  if(counted_bars<1)
     {
      for(i=1;i<=CCIPeriod;i++) CCIBuffer[Bars-i]=0.0;
      for(i=1;i<=CCIPeriod;i++) DevBuffer[Bars-i]=0.0;
      for(i=1;i<=CCIPeriod;i++) MovBuffer[Bars-i]=0.0;
     }
*/
//---- last counted bar will be recounted
   int limit=Bars-counted_bars;
   if (counted_bars>0) limit++; else if (limit>300) limit=300;

   
   
   for(i=0; i<limit; i++)
      W[i]=50+(-100)*(High[Highest(NULL,0,MODE_HIGH,40,i)]-Close[i])/(High[Highest(NULL,0,MODE_HIGH,40,i)]-Low[Lowest(NULL,0,MODE_LOW,40,i)]);

   for(i=0; i<limit; i++) Zero[i]=0;
   
   for(i=0; i<limit; i++)
  {
  
  
        
     if (W[i]<0 && W[i+1]>0 && i<2) 
     {
     Ssw=1;
     Bsw=0;
     }
        
     if (W[i]>0 && W[i+1]<0 && i<2) 
     {
     Ssw=0;
     Bsw=1;
     }
     
      
     if (Bsw==1 && i<2 && W[i]>=15 )
         {
     Ssw=0;
     Bsw=0;
       Alert (Symbol()," ",Period()," Willy Says B U Y");
         }
       if (Ssw==1 && i<2 && W[i]<=-15 )
         {
     Ssw=0;
     Bsw=0;
       Alert (Symbol()," ",Period()," Willy Says S E L L");
     }
 if (Ssw==1) Comment ("SELL SWITCH ON","i ",i,"W[i] ",W[i],"W[i+1] ",W[i+1]);
 if (Bsw==1) Comment ("BUY SWITCH ON","i ",i,"W[i] ",W[i],"W[i+1] ",W[i+1]);
 if (Bsw==0 && Ssw==0) Comment ("NO SWITCH ON","i ",i,"W[i] ",W[i],"W[i+1] ",W[i+1]);
 
 
   if (W[i]>0)
      {WU[i]=W[i];WD[i]=0;}
      
      else if (W[i]<0)
          {WU[i]=0;WD[i]=W[i];}
          
            else {WU[i]=0;WD[i]=0;}
        }    
            return(0);
   
}