FX Sniper's T3 CCI_001

//+------------------------------------------------------------------+
//|                                                       T3 CCI.mq4 |
//|                                                        FX Sniper |
//|                                                                  |
//+------------------------------------------------------------------+
#property copyright "FX Sniper:  T3-CCI :-)"
#property link      "http://dunno.com  :-)/"

#property indicator_separate_window
#property indicator_buffers 3
#property indicator_color1 Blue
#property  indicator_color2  Lime
#property  indicator_color3  Red

extern int CCI_Period = 14;
extern int T3_Period = 5;
extern double b = 0.618;

double e1,e2,e3,e4,e5,e6;
double c1,c2,c3,c4;
double n,w1,w2,b2,b3;
double cci[];
double cciHup[];
double cciHdn[];


//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicators setting
    IndicatorBuffers(8);

    SetIndexStyle(0,DRAW_LINE,STYLE_SOLID,2);
    SetIndexStyle(1,DRAW_HISTOGRAM,0,1);
    SetIndexStyle(2,DRAW_HISTOGRAM,0,1); 
        
    IndicatorDigits(MarketInfo(Symbol(),MODE_DIGITS));
    IndicatorShortName("FX Sniper's T3-CCI: "+CCI_Period);
    
    SetIndexBuffer(0,cci);
    SetIndexBuffer(1,cciHup);
    SetIndexBuffer(2,cciHdn);
    SetIndexLabel(0,"T3-CCI");
   

//---- variable reset

    b2=b*b;
    b3=b2*b;
    c1=-b3;
    c2=(3*(b2+b3));
    c3=-3*(2*b2+b+b3);
    c4=(1+3*b+b3+3*b2);
    n=T3_Period;

    if (n<1) n=1;
    n = 1 + 0.5*(n-1);
    w1 = 2 / (n + 1);
    w2 = 1 - w1;
    
//----
    return(0);
  }

//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
  {
   int limit;
   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;
   
//---- indicator calculation
 //for(int i=limit; i>=0; i--)
    
    for(int i=Bars-1; i>=0; i--)
    {
    
    cci[i]= iCCI(NULL,0,CCI_Period, PRICE_TYPICAL ,i);

    
        e1 = w1*cci[i] + w2*e1;
        e2 = w1*e1 + w2*e2;
        e3 = w1*e2 + w2*e3;
        e4 = w1*e3 + w2*e4;
        e5 = w1*e4 + w2*e5;
        e6 = w1*e5 + w2*e6;
        
        cci[i] = c1*e6 + c2*e5 + c3*e4 + c4*e3;
   
     if (cci[i] >= 0 )
      cciHup[i] = cci[i];
     else
      cciHup[i] = 0;
    
     if (cci[i] < 0 )
      cciHdn[i] = cci[i];
     else
      cciHdn[i]=0; 
   
        
        
    }   
//----
   return(0);
  }
//+------------------------------------------------------------------+