//+------------------------------------------------------------------+
//|                                               Hull_Style_ADX.mq4 |
//+------------------------------------------------------------------+

//---- indicator settings

#property  indicator_separate_window

#property  indicator_buffers 3

#property  indicator_color1  LightSeaGreen
#property  indicator_color2  YellowGreen
#property  indicator_color3  Wheat

//---- indicator parameters

extern int ADX_Period         = 14;
extern int Applied_Price      =  0; // 0 Close , 1 Open , 2 High , 3 Low , 4 Median , 5 Typical , 6 Weighted
extern int Ma_Method          =  0; // 0 SMA , 1 EMA , 2 SMMA , 3 LWMA

//---- indicator buffers

double finaladxbuffer[];

double finalplusdibuffer[];

double finalminusdibuffer[];

int    draw_begin0;

//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+

int init()
 {

//---- indicator buffers mapping
  
//---- drawing settings
  
  draw_begin0 = ADX_Period+MathFloor(MathSqrt(ADX_Period));
  
  SetIndexEmptyValue(0,0.0000);
  SetIndexStyle(0,DRAW_LINE,STYLE_SOLID,1);
  SetIndexBuffer(0,finaladxbuffer);
  SetIndexLabel(0,"ADX");
  SetIndexDrawBegin(0,draw_begin0);
  
  SetIndexEmptyValue(1,0.0000);
  SetIndexStyle(1,DRAW_LINE,STYLE_DOT,1);
  SetIndexBuffer(1,finalplusdibuffer);
  SetIndexLabel(1,"Plus-Di");
  SetIndexDrawBegin(1,draw_begin0);
  
  SetIndexEmptyValue(2,0.0000);
  SetIndexStyle(2,DRAW_LINE,STYLE_DOT,1);
  SetIndexBuffer(2,finalminusdibuffer);
  SetIndexLabel(2,"Minus-Di");
  SetIndexDrawBegin(2,draw_begin0);
  
//---- name for DataWindow and indicator subwindow label
  
  IndicatorShortName("Hull_Style_ADX("+ADX_Period+")");
  
//---- initialization done
  return(0);
 }

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+

int start()
 {
  int limit,i,shift;
  int counted_bars=IndicatorCounted();

//---- check for possible errors
  if(counted_bars<1)
   {
     for(i=1;i<=draw_begin0;i++) { finaladxbuffer[Bars-i]=0; finalplusdibuffer[Bars-i]=0; finalminusdibuffer[Bars-i]=0; }
   }

//---- last counted bar will be recounted
  if(counted_bars>0) counted_bars--;
  limit=Bars-counted_bars;

//-----------------------------------------------------------------------------------------------------------------
  
  for(i=0; i<limit; i++)
    { finaladxbuffer[i] = (iADX(Symbol(),0,MathFloor(ADX_Period/2),Applied_Price,MODE_MAIN,i)*2) - iADX(Symbol(),0,ADX_Period,Applied_Price,MODE_MAIN,i); }

//-----------------------------------------------------------------------------------------------------------------
  
  for(i=0; i<limit; i++)
    { finalplusdibuffer[i] = (iADX(Symbol(),0,MathFloor(ADX_Period/2),Applied_Price,MODE_PLUSDI,i)*2) - iADX(Symbol(),0,ADX_Period,Applied_Price,MODE_PLUSDI,i); }

//-----------------------------------------------------------------------------------------------------------------
  
  for(i=0; i<limit; i++)
    { finalminusdibuffer[i] = (iADX(Symbol(),0,MathFloor(ADX_Period/2),Applied_Price,MODE_MINUSDI,i)*2) - iADX(Symbol(),0,ADX_Period,Applied_Price,MODE_MINUSDI,i); }

//-----------------------------------------------------------------------------------------------------------------

//---- done
  return(0);
 }