//+------------------------------------------------------------------+
//|                                         Heiken Ashi Smoothed.mq4 |
//|                        Copyright 2021, Juvenille Emperor Limited |
//|                                        www.juvenille-emperor.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2021, Juvenille Emperor Limited"
#property link      "www.juvenille-emperor.com"
//----
#property indicator_chart_window
#property indicator_buffers 4
#property indicator_color1 Red
#property indicator_color2 DodgerBlue
#property indicator_color3 Red
#property indicator_color4 DodgerBlue
//---- parameters
extern ENUM_MA_METHOD MaMetod =2;
extern int MaPeriod=6;
extern ENUM_MA_METHOD MaMetod2 =3;
extern int MaPeriod2=2;
//---- buffers
double ExtMapBuffer1[];
double ExtMapBuffer2[];
double ExtMapBuffer3[];
double ExtMapBuffer4[];
double ExtMapBuffer5[];
double ExtMapBuffer6[];
double ExtMapBuffer7[];
double ExtMapBuffer8[];
//----
int ExtCountedBars=0;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//|------------------------------------------------------------------|
int init()
  {
//---- indicators
   IndicatorBuffers(8);
   SetIndexStyle(0,DRAW_HISTOGRAM,0,1,Red);
   SetIndexBuffer(0,ExtMapBuffer1);
   SetIndexStyle(1,DRAW_HISTOGRAM,0,1,DodgerBlue);
   SetIndexBuffer(1,ExtMapBuffer2);
   SetIndexStyle(2,DRAW_HISTOGRAM,0,3,Red);
   SetIndexBuffer(2,ExtMapBuffer3);
   SetIndexStyle(3,DRAW_HISTOGRAM,0,3,DodgerBlue);
   SetIndexBuffer(3,ExtMapBuffer4);
//----
   SetIndexDrawBegin(0,5);
//---- indicator buffers mapping
   SetIndexBuffer(0,ExtMapBuffer1);
   SetIndexBuffer(1,ExtMapBuffer2);
   SetIndexBuffer(2,ExtMapBuffer3);
   SetIndexBuffer(3,ExtMapBuffer4);
   SetIndexBuffer(4,ExtMapBuffer5);
   SetIndexBuffer(5,ExtMapBuffer6);
   SetIndexBuffer(6,ExtMapBuffer7);
   SetIndexBuffer(7,ExtMapBuffer8);
//---- initialization done
   return(0);
  }
//+------------------------------------------------------------------+
//| Custor indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
//----
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
  {
   double maOpen,maClose,maLow,maHigh;
   double haOpen,haHigh,haLow,haClose;
   if(Bars<=10) return(0);

   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+MathMax(1,MathMax(MaPeriod,MaPeriod2));

   int pos=limit;
   while(pos>=0)
     {
      maOpen=iMA(NULL,0,MaPeriod,0,MaMetod,MODE_OPEN,pos);
      maClose=iMA(NULL,0,MaPeriod,0,MaMetod,MODE_CLOSE,pos);
      maLow=iMA(NULL,0,MaPeriod,0,MaMetod,MODE_LOW,pos);
      maHigh=iMA(NULL,0,MaPeriod,0,MaMetod,MODE_HIGH,pos);
      //----
      haOpen=(ExtMapBuffer5[pos+1]+ExtMapBuffer6[pos+1])/2;
      haClose=(maOpen+maHigh+maLow+maClose)/4;
      haHigh=MathMax(maHigh,MathMax(haOpen,haClose));
      haLow=MathMin(maLow,MathMin(haOpen,haClose));
      if(haOpen<haClose)
        {
         ExtMapBuffer7[pos]=haLow;
         ExtMapBuffer8[pos]=haHigh;
        }
      else
        {
         ExtMapBuffer7[pos]=haHigh;
         ExtMapBuffer8[pos]=haLow;
        }
      ExtMapBuffer5[pos]=haOpen;
      ExtMapBuffer6[pos]=haClose;
      pos--;
     }
   int i;
   for(i=0; i<limit; i++) ExtMapBuffer1[i]=iMAOnArray(ExtMapBuffer7,0,MaPeriod2,0,MaMetod2,i);
   for(i=0; i<limit; i++) ExtMapBuffer2[i]=iMAOnArray(ExtMapBuffer8,0,MaPeriod2,0,MaMetod2,i);
   for(i=0; i<limit; i++) ExtMapBuffer3[i]=iMAOnArray(ExtMapBuffer5,0,MaPeriod2,0,MaMetod2,i);
   for(i=0; i<limit; i++) ExtMapBuffer4[i]=iMAOnArray(ExtMapBuffer6,0,MaPeriod2,0,MaMetod2,i);
//----
   return(0);
  }
//+------------------------------------------------------------------+
