//+------------------------------------------------------------------+
//|                                                     TTF+-+MW.mq4 |
//|                                                           MojoFX |
//|                                         http://fx.studiomojo.com |
//+------------------------------------------------------------------+
#property copyright "MojoFX"
#property link      "http://fx.studiomojo.com"
//---- indicators setting
#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Red
#property indicator_color2 Green
//---- input parameters
extern int       TTFbars=12;
extern int       t3_period=6;
extern double    b=1.618;
//---- buffers
double ExtMapBuffer1[],ExtMapBuffer2[];
double b2,b3,c1,c2,c3,c4,e1,e2,e3,e4,e5,e6,w1,w2,TTF,r;
double HighestHighRecent,HighestHighOlder,LowestLowRecent,LowestLowOlder;
double BuyPower,SellPower;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicators
   SetIndexStyle(0,DRAW_ARROW);
   SetIndexArrow(0,159);
   SetIndexBuffer(0,ExtMapBuffer1);
   SetIndexEmptyValue(0,0.0);
   SetIndexStyle(1,DRAW_ARROW);
   SetIndexArrow(1,159);
   SetIndexBuffer(1,ExtMapBuffer2);
   SetIndexEmptyValue(1,0.0);
//----
   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);
   r=t3_period;
   if(r<1) r=1;
   r=1+0.5*(r-1);
   w1=2/(r + 1);
   w2=1 - w1;
//
   e1=0;
   e2=0;
   e3=0;
   e4=0;
   e5=0;
   e6=0;
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custor indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
//---- TODO: add your code here
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
  {
   int counted_bars=IndicatorCounted();
   if(counted_bars<0) return(-1);
   if(counted_bars>0) counted_bars--;
   int limit=Bars-counted_bars;
   if(counted_bars==0) limit-=1+TTFbars+1;
//---- 
   for(int i=limit; i>=0; i--)
     {
      HighestHighRecent=High[Highest(NULL,0,2,TTFbars,i-TTFbars+1)];
      HighestHighOlder =High[Highest(NULL,0,2,TTFbars,i+1)];
      LowestLowRecent=Low[Lowest(NULL,0,1,TTFbars,i-TTFbars+1)];
      LowestLowOlder =Low[Lowest(NULL,0,1,TTFbars,i+1)];
      BuyPower =HighestHighRecent-LowestLowOlder;
      SellPower=HighestHighOlder -LowestLowRecent;
      TTF=(BuyPower-SellPower)/(0.5*(BuyPower+SellPower))*100;
      //
      e1=w1*TTF + 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;
      //
      TTF=c1*e6+c2*e5+c3*e4+c4*e3;
      //
      if(TTF<=(-100))
        {
         ExtMapBuffer1[i]=High[i]+4*Point;
         ExtMapBuffer2[i]=0;
        }
      if(TTF>=100)
        {
         ExtMapBuffer1[i]=0;
         ExtMapBuffer2[i]=Low[i]-4*Point;
        }
      if(TTF>(-100) && TTF<100)
        {
         ExtMapBuffer1[i]=0;
         ExtMapBuffer2[i]=0;
        }
     }
//----
   return(0);
  }
//+------------------------------------------------------------------+