//+------------------------------------------------------------------+
//|                                               BBands_Stop_v1.mq4 |
//|                           Copyright © 2006, TrendLaboratory Ltd. |
//|            http://finance.groups.yahoo.com/group/TrendLaboratory |
//|                                       E-mail: igorad2004@list.ru |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2006, TrendLaboratory Ltd."
#property link      "http://finance.groups.yahoo.com/group/TrendLaboratory"
//----
#property indicator_chart_window
#property indicator_buffers 6
#property indicator_color1 Chartreuse
#property indicator_color2 Orange
#property indicator_color3 Chartreuse
#property indicator_color4 Orange
#property indicator_color5 Chartreuse
#property indicator_color6 Orange
//---- input parameters
extern int    Length=20;      // Bollinger Bands Period
extern int    Deviation=2;    // Deviation
extern double MoneyRisk=1.00; // Offset Factor
extern int    Signal=1;       // Display signals mode: 1-Signals & Stops; 0-only Stops; 2-only Signals;
extern int    Line=1;         // Display line mode: 0-no,1-yes  
extern int    Nbars=1000;
//---- indicator buffers
double UpTrendBuffer[];
double DownTrendBuffer[];
double UpTrendSignal[];
double DownTrendSignal[];
double UpTrendLine[];
double DownTrendLine[];
double smax[],smin[],bsmax[],bsmin[];

//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
  int init()
  {
   string short_name;
//---- indicator line
   SetIndexBuffer(0,UpTrendBuffer);
   SetIndexBuffer(1,DownTrendBuffer);
   SetIndexBuffer(2,UpTrendSignal);
   SetIndexBuffer(3,DownTrendSignal);
   SetIndexBuffer(4,UpTrendLine);
   SetIndexBuffer(5,DownTrendLine);
   SetIndexStyle(0,DRAW_ARROW);
   SetIndexStyle(1,DRAW_ARROW);
   SetIndexStyle(2,DRAW_ARROW);
   SetIndexStyle(3,DRAW_ARROW);
   SetIndexStyle(4,DRAW_LINE);
   SetIndexStyle(5,DRAW_LINE);
   SetIndexArrow(0,159);
   SetIndexArrow(1,159);
   SetIndexArrow(2,108);
   SetIndexArrow(3,108);
   IndicatorDigits(MarketInfo(Symbol(),MODE_DIGITS));
//---- name for DataWindow and indicator subwindow label
   short_name="BBands Stop("+Length+","+Deviation+")";
   IndicatorShortName(short_name);
   SetIndexLabel(0,"UpTrend Stop");
   SetIndexLabel(1,"DownTrend Stop");
   SetIndexLabel(2,"UpTrend Signal");
   SetIndexLabel(3,"DownTrend Signal");
   SetIndexLabel(4,"UpTrend Line");
   SetIndexLabel(5,"DownTrend Line");
//----
   SetIndexDrawBegin(0,Length);
   SetIndexDrawBegin(1,Length);
   SetIndexDrawBegin(2,Length);
   SetIndexDrawBegin(3,Length);
   SetIndexDrawBegin(4,Length);
   SetIndexDrawBegin(5,Length);
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Bollinger Bands_Stop_v1                                          |
//+------------------------------------------------------------------+
int start()
  {
   int    i,shift,trend;
//----
   /*for(shift=Nbars;shift>=0;shift--)
     {
      UpTrendBuffer[shift]=0;
      DownTrendBuffer[shift]=0;
      UpTrendSignal[shift]=0;
      DownTrendSignal[shift]=0;
      UpTrendLine[shift]=EMPTY_VALUE;
      DownTrendLine[shift]=EMPTY_VALUE;
     }
*/     
   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+1;
   
   int xsize=ArraySize(UpTrendBuffer);  
   ArrayResize(smax,xsize);
   ArrayResize(smin,xsize);
   ArrayResize(bsmax,xsize);
   ArrayResize(bsmin,xsize);
   
   for(shift=limit;shift>=0;shift--)
     {
      smax[shift]=iBands(NULL,0,Length,Deviation,0,PRICE_CLOSE,MODE_UPPER,shift);
      smin[shift]=iBands(NULL,0,Length,Deviation,0,PRICE_CLOSE,MODE_LOWER,shift);
//----
      if (Close[shift]>smax[shift+1]) trend=1;
      if (Close[shift]<smin[shift+1]) trend=-1;
      if(trend>0 && smin[shift]<smin[shift+1]) smin[shift]=smin[shift+1];
      if(trend<0 && smax[shift]>smax[shift+1]) smax[shift]=smax[shift+1];
//----
      bsmax[shift]=smax[shift]+0.5*(MoneyRisk-1)*(smax[shift]-smin[shift]);
      bsmin[shift]=smin[shift]-0.5*(MoneyRisk-1)*(smax[shift]-smin[shift]);
//----
      if(trend>0 && bsmin[shift]<bsmin[shift+1]) bsmin[shift]=bsmin[shift+1];
      if(trend<0 && bsmax[shift]>bsmax[shift+1]) bsmax[shift]=bsmax[shift+1];
      if (trend>0)
        {
         if (Signal>0 && UpTrendBuffer[shift+1]==-1.0)
           {
            UpTrendSignal[shift]=bsmin[shift];
            UpTrendBuffer[shift]=bsmin[shift];
            if(Line>0) UpTrendLine[shift]=bsmin[shift];
           }
         else
           {
            UpTrendBuffer[shift]=bsmin[shift];
            if(Line>0) UpTrendLine[shift]=bsmin[shift];
            UpTrendSignal[shift]=-1;
           }
         if (Signal==2) UpTrendBuffer[shift]=0;
         DownTrendSignal[shift]=-1;
         DownTrendBuffer[shift]=-1.0;
         DownTrendLine[shift]=EMPTY_VALUE;
        }
      if (trend<0)
        {
         if (Signal>0 && DownTrendBuffer[shift+1]==-1.0)
           {
            DownTrendSignal[shift]=bsmax[shift];
            DownTrendBuffer[shift]=bsmax[shift];
            if(Line>0) DownTrendLine[shift]=bsmax[shift];
           }
         else
           {
            DownTrendBuffer[shift]=bsmax[shift];
            if(Line>0)DownTrendLine[shift]=bsmax[shift];
            DownTrendSignal[shift]=-1;
           }
         if (Signal==2) DownTrendBuffer[shift]=0;
         UpTrendSignal[shift]=-1;
         UpTrendBuffer[shift]=-1.0;
         UpTrendLine[shift]=EMPTY_VALUE;
        }
     }
   return(0);
  }
//+------------------------------------------------------------------+