//+------------------------------------------------------------------+ 
//|                                                   Supertrend.mq4 | 
//|                   Copyright © 2005, Jason Robinson (jnrtrading). | 
//|                                      http://www.jnrtrading.co.uk | 
//+------------------------------------------------------------------+ 
#property copyright "Copyright © 2005, Jason Robinson (jnrtrading)." 
#property link      "http://www.jnrtrading.co.uk" 

#property indicator_chart_window 
#property indicator_buffers 4 
#property indicator_color1 Lime 
#property indicator_color2 Red 


double TrendUp[]; 
double TrendDown[]; 
int st = 0; 
//extern int SlowerEMA = 6; 



//+------------------------------------------------------------------+ 
//| Custom indicator initialization function                         | 
//+------------------------------------------------------------------+ 
int init() 
  { 
//---- indicators 

   SetIndexStyle(0, DRAW_LINE, STYLE_SOLID, 2); 
   SetIndexBuffer(0, TrendUp); 
   SetIndexStyle(1, DRAW_LINE, STYLE_SOLID, 2); 
   SetIndexBuffer(1, TrendDown); 
    
   /*SetIndexStyle(0, DRAW_ARROW, EMPTY); 
   SetIndexArrow(0, 159); 
   SetIndexBuffer(0, TrendUp); 
   SetIndexStyle(1, DRAW_ARROW, EMPTY); 
   SetIndexArrow(1, 159); 
   SetIndexBuffer(1, TrendDown);*/ 
    
   /*for(int i = 0; i < Bars; i++) { 
      TrendUp[i] = NULL; 
      TrendDown[i] = NULL; 
   }*/ 
//---- 
   return(0); 
  } 
//+------------------------------------------------------------------+ 
//| Custor indicator deinitialization function                       | 
//+------------------------------------------------------------------+ 
int deinit() 
  { 
//---- 
   /*for(int i = 0; i < Bars; i++) { 
      TrendUp[i] = NULL; 
      TrendDown[i] = NULL; 
   }*/ 
//---- 
   return(0); 
  } 
//+------------------------------------------------------------------+ 
//| Custom indicator iteration function                              | 
//+------------------------------------------------------------------+ 
int start() 
  { 
    
   int limit, i, counter; 
   double Range, AvgRange, cciTrendNow, cciTrendPrevious, var; 

   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 = limit; i >= 0; i--) { 
      cciTrendNow = iCCI(NULL, 0, 50, PRICE_TYPICAL, i); 
      cciTrendPrevious = iCCI(NULL, 0, 50, PRICE_TYPICAL, i+1); 
      
      //st = st * 100; 
      
      
      counter = i; 
      Range = 0; 
      AvgRange = 0; 
      for (counter = i; counter >= i-9; counter--) { 
         AvgRange = AvgRange + MathAbs(High[counter]-Low[counter]); 
      } 
      Range = AvgRange/10; 
      if (cciTrendNow >= st && cciTrendPrevious < st) { 
         TrendUp[i+1] = TrendDown[i+1]; 
      } 
      
      if (cciTrendNow <= st && cciTrendPrevious > st) { 
         TrendDown[i+1] = TrendUp[i+1]; 
      } 
      
      if (cciTrendNow >= st) { 
         TrendUp[i] = Low[i] - iATR(NULL, 0, 5, i);          
         if (TrendUp[i] < TrendUp[i+1]) { 
            TrendUp[i] = TrendUp[i+1]; 
         } 
      } 
      else if (cciTrendNow <= st) { 
         TrendDown[i] = High[i] + iATR(NULL, 0, 5, i); 
         if (TrendDown[i] > TrendDown[i+1]) { 
            TrendDown[i] = TrendDown[i+1]; 
         } 
      } 
   } 
          
//---- 
    
//---- 
   return(0); 
  } 
//+------------------------------------------------------------------+