//+------------------------------------------------------------------+
//|                                                    BbSq-OsMA.mq4 |
//|                                         Copyright © 2011, Remyn. |
//|                                                                  |
//+------------------------------------------------------------------+
#property  copyright "Copyright © 2011, Remyn."
#property  link      "http://codebase.mql4.com/"
//---- indicator settings
#property  indicator_separate_window
#property  indicator_buffers 4
#property indicator_color1 SteelBlue
#property indicator_color2 MediumBlue
//#property indicator_color3 Blue
#property indicator_color4 Lime
//---- indicator parameters
extern int       bolPrd=20;
extern double    bolDev=2.0;
extern int       keltPrd=10;
extern double    keltFactor=1.2;

extern int FastEMA=12;
extern int SlowEMA=26;
extern int SignalSMA=9;
extern int Histo=2;

//---- indicator buffers
double     upOsMA[];
double     downOsMA[];
double     OsmaBuffer[];
double     upK[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- 2 additional buffers are used for counting.
   IndicatorBuffers(4);
//---- drawing settings
   SetIndexStyle(0, DRAW_HISTOGRAM, STYLE_SOLID, Histo);
   SetIndexStyle(1, DRAW_HISTOGRAM, STYLE_SOLID, Histo);
   SetIndexDrawBegin(0,SignalSMA);
   IndicatorDigits(Digits+2);
//---- 3 indicator buffers mapping
   SetIndexBuffer(0,upOsMA);
   SetIndexBuffer(1,downOsMA);
   SetIndexBuffer(2,OsmaBuffer);
   SetIndexStyle(3,DRAW_ARROW,EMPTY);
   SetIndexBuffer(3,upK);
   SetIndexEmptyValue(3,EMPTY_VALUE);
   SetIndexArrow(3,159);
//---- name for DataWindow and indicator subwindow label
   IndicatorShortName("OsMA("+FastEMA+","+SlowEMA+","+SignalSMA+")");
//---- initialization done
   return(0);
  }
//+------------------------------------------------------------------+
//| Moving Average of Oscillator                                     |
//+------------------------------------------------------------------+
int start()
  {
   int limit;
   int counted_bars=IndicatorCounted();
   double diff,d, std,bbs;
//---- last counted bar will be recounted

if(counted_bars < 0)  return(-1);
if(counted_bars > 0)   counted_bars--;
limit = Bars - counted_bars;
if(counted_bars==0) limit--;
   
//---- macd counted in the 1-st additional buffer
   for(int i=0; i<limit; i++)
   OsmaBuffer[i] = iOsMA(NULL, 0, FastEMA, SlowEMA, SignalSMA, PRICE_CLOSE, i);
//+------------------------------------------------------------------+
   for(i=0; i<limit; i++)
     {
       if (OsmaBuffer[i] > OsmaBuffer[i+1])
     {
      upOsMA[i] = OsmaBuffer[i];
      downOsMA[i] = 0;
     }
   else 
       if(OsmaBuffer[i] < OsmaBuffer[i+1])
         {
           downOsMA[i] = OsmaBuffer[i];
           upOsMA[i] = 0;   
         }
   else
     {
       upOsMA[i] = 0;
       downOsMA[i] = 0;   
     }
		diff = iATR(NULL,0,keltPrd,i)*keltFactor;
		std = iStdDev(NULL,0,bolPrd,MODE_SMA,0,PRICE_CLOSE,i);
		if(diff!=0){
		bbs = bolDev * std / diff;
		}
      if(bbs<1) {
         upK[i]=0;
      } else {
         upK[i]=EMPTY_VALUE;
      }
      }
//---- done
   return(0);
  }
//+------------------------------------------------------------------+