//+------------------------------------------------------------------+
//| BOLLINGER+STARC (BollStarc-TC.mq4)                                    |
//| Copyright © 2006                                                 |
//| http://www.                                                      |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2006, "
#property link "http://www.   "

#property indicator_chart_window
#property indicator_buffers 5
#property indicator_color1 DimGray // Starc midband
#property indicator_color2 Yellow //Starc upper
#property indicator_color3 Yellow
#property indicator_color4 RoyalBlue //BBupper
#property indicator_color5 RoyalBlue


//---- indicator parameters
extern int BB_Period=20;
extern int BB_Deviations=2;
extern int MA_Period=13; //6
extern int ATR_Period=21; //15
extern double KATR=2;
extern int Shift=0; //1
//---- buffers
double MovingBuffer[];
double UpperBuffer[];
double LowerBuffer[];

double ExtMapBuffer1[];
double ExtMapBuffer2[];

//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
  //---- indicators
  SetIndexStyle(0,DRAW_LINE,0,1);
  SetIndexBuffer(0,MovingBuffer);
  SetIndexStyle(1,DRAW_LINE,STYLE_SOLID,1);
  SetIndexBuffer(1,UpperBuffer);
  SetIndexStyle(2,DRAW_LINE,STYLE_SOLID,1);
  SetIndexBuffer(2,LowerBuffer);
  //----
  SetIndexDrawBegin(0,MA_Period+Shift);
  SetIndexDrawBegin(1,ATR_Period+Shift);
  SetIndexDrawBegin(2,ATR_Period+Shift);
  //---- BB start
  SetIndexStyle(3,DRAW_LINE,STYLE_SOLID,1);
  SetIndexBuffer(3,ExtMapBuffer1);
  SetIndexStyle(4,DRAW_LINE,STYLE_SOLID,1);
  SetIndexBuffer(4,ExtMapBuffer2);
  //---- 
  SetIndexDrawBegin(3,BB_Period);
  SetIndexDrawBegin(4,BB_Period);
  //---- BB ends
    
  return(0);
}

//+------------------------------------------------------------------+
//| Bollinger+STARC Bands                                                      |
//+------------------------------------------------------------------+
int start()
{
  int i,k,counted_bars=IndicatorCounted();
  
  //----
  if(Bars<=MA_Period) return(0);
  
  //---- initial zero
  if(counted_bars<1)
  for(i=1;i<=MA_Period;i++)
  {
    MovingBuffer[Bars-i]=EMPTY_VALUE;
    UpperBuffer[Bars-i]=EMPTY_VALUE;
    LowerBuffer[Bars-i]=EMPTY_VALUE;
    ExtMapBuffer1[Bars-i]=EMPTY_VALUE;
    ExtMapBuffer2[Bars-i]=EMPTY_VALUE;
  }
  
  //----
  int limit=Bars-counted_bars;
  if(counted_bars>0) limit++;
  for(i=0; i<limit; i++)
  {
    //STARC Bands
    MovingBuffer[i] = iMA(NULL,0,MA_Period,Shift,MODE_EMA,PRICE_CLOSE,i);
    UpperBuffer[i] = MovingBuffer[i] + (KATR * iATR(NULL,0,ATR_Period,i+Shift));
    LowerBuffer[i] = MovingBuffer[i] - (KATR * iATR(NULL,0,ATR_Period,i+Shift));
    //BBands
    ExtMapBuffer1[i]=iBands(NULL,0,BB_Period,BB_Deviations,0,PRICE_CLOSE,MODE_UPPER,i);
    ExtMapBuffer2[i]=iBands(NULL,0,BB_Period,BB_Deviations,0,PRICE_CLOSE,MODE_LOWER,i);
   
  }
  
  //----
  return(0);
}

//+-----------------------------------------------------------------+