//+------------------------------------------------------------------+
//|                                                          JMA.mq4 |
//|                                                           Spiggy |
//|                                                                  |
//+------------------------------------------------------------------+
#property copyright "Spiggy"
#property link      ""

#property indicator_chart_window
#property indicator_buffers 1
#property indicator_color1 White

//---- input parameters
extern int       Periods=14;
extern int       PriceType = 0;
extern int       Offset = 0;
extern int       phase=0;
extern int       BarCount=300;
//---- buffers
double ExtMapBuffer1[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicators
   SetIndexStyle(0,DRAW_LINE);
   SetIndexBuffer(0,ExtMapBuffer1);
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custor indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
//---- 
   
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
  {
   int    counted_bars=IndicatorCounted();
//---- 
// variable definitions
bool firstTime=True;
int AccountedBars=0;
int jj=0;
int ii=0;
int shift=0;
double series=0;

double vv=0;
double v1=0;
double v2=0;
double v3=0;
double v4=0;
double s8=0;
double s10=0;
double s18=0;
double s20=0;
int v5=0;
int v6=0;
double s28=0;
double s30=0;
int s38=0;
int s40=0;
int s48=0;
int s50=0;
int s58=0;
int s60=0;
double s68=0;
double s70=0;
double f8=0;
double f10=0;
double f18=0;
double f20=0;
double f28=0;
double f30=0;
double f38=0;
double f40=0;
double f48=0;
double f50=0;
double f58=0;
double f60=0;
double f68=0; 
double f70=0;
double f78=0;
double f80=0;
double f88=0;
double f90=0;
double f98=0;
double fA0=0;
double fA8=0;
double fB0=0;
double fB8=0;
double fC0=0;
double fC8=0;
double fD0=0;
double f0=0;
double fD8=0;
double fE0=0;
double fE8=0;
int fF0=0;
double fF8=0;
int value2=0;
double JMA=0;
double prevtime=0; 

double list[127];
double ring1[127];
double ring2[10];
double buffer[61]; 

ArrayInitialize(list,0);
ArrayInitialize(ring1,0);
ArrayInitialize(ring2,0);
ArrayInitialize(buffer,0);

if (firstTime)
{
  AccountedBars = Bars-BarCount;
  firstTime=False;
}

if ((CurTime()-prevtime)<30) 
  return(-1); 

prevtime=CurTime(); 
//SetLoopCount(0); 
{
  s28 = 63; 
  s30 = 64; 
  for ( ii = 1 ; ii <= s28 ; ii++)
  { 
    list[ii] = -1000000; 
  } 
  for ( ii = s30 ; ii <= 127  ; ii++ )
  { 
    list[ii] = 1000000; 
  } 
  f0 = 1; 
} 

//{--------------------------------------------------------------------} 
for ( shift=BarCount ; shift >= 0 ; shift-- )
{ 
   switch(PriceType) {
      case 0:
         series=Close[shift]; 
         break;
      case 1:
         series=Open[shift]; 
         break;
      case 2:
         series=High[shift]; 
         break;
      case 3:
         series=Low[shift]; 
         break;
      case 4:
         series=(High[shift]+Low[shift])/2; 
         break;
      case 5:
         series=(High[shift]+Low[shift]+Close[shift])/3; 
         break;
      case 6:
         series=(High[shift]+Low[shift]+Close[shift]+Close[shift])/4; 
         break;
  }
  if (fF0 < 61) 
  { 
    fF0= fF0 + 1; 
    buffer[fF0] = series; 
  } 
  //{--------------------------------------------------------------------} 
  // { main cycle } 
  if (fF0 > 30) 
  {
    if (Periods < 1.0000000002) 
    {
      f80 = 0.0000000001; //{1.0e-10} 
    }
    else 
    {
      f80 = (Periods - 1) / 2.0; 
    }
    
    if (phase < -100) 
    {
      f10 = 0.5;
    } 
    else
    {
      if (phase > 100)
      { 
           f10 = 2.5;
      } 
      else
      {
        f10 = phase / 100 + 1.5; 
      }
    }
  
    v1 = MathLog(MathSqrt(f80)); 
    v2 = v1; 
    if (v1 / MathLog(2.0) + 2.0 < 0.0) 
    {
      v3 = 0;
    }
    else 
    {
      v3 = v2 / MathLog(2.0) + 2.0;
    } 
    f98 = v3; 
  
    if (0.5 <= f98 - 2.0)
    { 
      f88 = f98 - 2.0;
    } 
    else 
    {
      f88 = 0.5;
    } 
  
    f78 = MathSqrt(f80) * f98;
    f90 = f78 / (f78 + 1.0); 
    f80 = f80 * 0.9; 
    f50 = f80 / (f80 + 2.0); 
  
    if (f0 != 0) 
    {
      f0 = 0; 
      v5 = 0; 
      for ( ii = 1 ; ii <=29 ; ii++ ) 
      { 
        if (buffer[ii+1] != buffer[ii])
        {
          v5 = 1.0;
        } 
      } 
      
      fD8 = v5*30.0; 
      if (fD8 == 0)
      { 
        f38 = series;
      } 
      else 
      {
        f38 = buffer[1]; 
      }
      f18 = f38; 
      if (fD8 > 29) 
        fD8 = 29; 
    }
    else 
      fD8 = 0; 
    
    for ( ii = fD8 ; ii >= 0 ; ii-- )
    { //{ another bigcycle...} 
      value2=31-ii; 
      if (ii == 0)
      { 
        f8 = series;
      } 
      else 
      {
        f8 = buffer[value2]; 
      }
      f28 = f8 - f18; 
      f48 = f8 - f38; 
      if (MathAbs(f28) > MathAbs(f48)) 
      {
        v2 = MathAbs(f28);
      } 
      else 
      {
        v2 = MathAbs(f48); 
      }
      fA0 = v2; 
      vv = fA0 + 0.0000000001; //{1.0e-10;} 
      
      if (s48 <= 1)
      { 
        s48 = 127;
      } 
      else
      { 
        s48 = s48 - 1;
      } 
      if (s50 <= 1) 
      {
        s50 = 10;
      } 
      else 
      {
        s50 = s50 - 1;
      } 
      if (s70 < 128) 
        s70 = s70 + 1; 
      s8 = s8 + vv - ring2[s50]; 
      ring2[s50] = vv; 
      if (s70 > 10) 
      {
        s20 = s8 / 10;
      } 
      else 
        s20 = s8 / s70; 
      
      if (s70 > 127) 
      {
        s10 = ring1[s48]; 
        ring1[s48] = s20; 
        s68 = 64; 
        s58 = s68; 
        while (s68 > 1) 
        { 
          if (list[s58] < s10) 
          {
            s68 = s68 *0.5; 
            s58 = s58 + s68; 
          }
          else 
          if (list[s58] <= s10) 
          {
            s68 = 1; 
          }
          else 
          { 
            s68 = s68 *0.5; 
            s58 = s58 - s68; 
          } 
        } 
      }
      else 
      { 
        ring1[s48] = s20; 
        if (s28 + s30 > 127) 
        {
          s30 = s30 - 1; 
          s58 = s30; 
        }
        else 
        { 
          s28 = s28 + 1; 
          s58 = s28; 
        } 
        if (s28 > 96) 
        {
          s38 = 96;
        } 
        else 
          s38 = s28; 
        if (s30 < 32)
        { 
          s40 = 32;
        } 
        else 
          s40 = s30; 
      } 
      
      s68 = 64; 
      s60 = s68; 
      while (s68 > 1) 
      { 
        if (list[s60] >= s20) 
        {
          if (list[s60 - 1] <= s20) 
          {
            s68 = 1; 
          }
          else 
          { 
            s68 = s68 *0.5; 
            s60 = s60 - s68; 
          } 
        }
        else 
        { 
          s68 = s68 *0.5; 
          s60 = s60 + s68; 
        } 
        if ((s60 == 127) && (s20 > list[127])) 
          s60 = 128; 
      } 
      
      if (s70 > 127) 
      {
        if (s58 >= s60) 
        {
          if ((s38 + 1 > s60) && (s40 - 1 < s60)) 
          {
            s18 = s18 + s20;
          }
          else 
          if ((s40 > s60) && (s40 - 1 < s58)) 
            s18 = s18 + list[s40 - 1]; 
        }
        else 
        if (s40 >= s60) 
        {
          if ((s38 + 1 < s60) && (s38 + 1 > s58)) 
            s18 = s18 + list[s38 + 1]; 
        }
        else 
        if (s38 + 2 > s60)
        { 
          s18 = s18 + s20;
        }
        else 
        if ((s38 + 1 < s60) && (s38 + 1 > s58)) 
          s18 = s18 + list[s38 + 1]; 
        
        if (s58 > s60) 
        {
          if ((s40 - 1 < s58) && (s38 + 1 > s58)) 
          {
            s18 = s18 - list[s58];
          }
          else 
          if ((s38 < s58) && (s38 + 1 > s60)) 
            s18 = s18 - list[s38]; 
        }
        else 
        { 
          if ((s38 + 1 > s58) && (s40 - 1 < s58)) 
          {
            s18 = s18 - list[s58];
          } 
          else 
          if ((s40 > s58) && (s40 < s60)) 
            s18 = s18 - list[s40]; 
        } 
      } 
      
      if (s58 <= s60) 
      {
        if (s58 >= s60) 
        {
          list[s60] = s20;
        } 
        else 
        { 
          for ( jj = s58 + 1 ; jj <= s60 - 1 ; jj++ ) 
          { 
            list[jj - 1] = list[jj]; 
          } 
          list[s60 - 1] = s20; 
        } 
      }
      else 
      { 
        for ( jj = s58 - 1 ; jj >= s60 ; jj-- )
        {
          list[jj + 1] = list[jj]; 
        } 
        list[s60] = s20; 
      } 
      
      if (s70 <= 127) 
      {
        s18 = 0; 
        for (jj = s40 ; jj <= s38 ; jj++)
        {
          s18 = s18 + list[jj]; 
        } 
      } 
      f60 = s18 / (s38 - s40 + 1); 
      if (fF8 + 1 > 31)
      { 
        fF8 = 31;
      }
      else
        fF8 = fF8 + 1; 
      
      if (fF8 <= 30) 
      {
        if (f28 > 0)
        { 
          f18 = f8;
        }
        else 
          f18 = f8 - f28 * f90; 
        if (f48 < 0)
        { 
          f38 = f8;
        } 
        else 
          f38 = f8 - f48 * f90; 
        fB8 = series; 
        //{EasyLanguage does not have "continue" statement} 
        if (fF8 != 30)
        { 
          continue; 
        }
        if (fF8 == 30) 
        {
          fC0 = series; 
          if (MathCeil(f78) >= 1)
          { 
            v4 = MathCeil(f78);
          } 
          else 
            v4 = 1; 
          fE8 = MathCeil(v4); 
          if (MathFloor(f78) >= 1)
          { 
            v2 = MathFloor(f78);
          } 
          else 
            v2 = 1; 
          fE0 = MathCeil(v2); 
          if (fE8 == fE0)
          { 
            f68 = 1;
          } 
          else 
          { 
            v4 = fE8 - fE0; 
            f68 = (f78 - fE0) / v4; 
          } 
          if (fE0 <= 29)
          { 
            v5 = fE0;
          }
          else 
            v5 = 29; 
          if (fE8 <= 29) 
          {
            v6 = fE8;
          } 
          else 
            v6 = 29; 
          fA8 = (series - buffer[fF0 - v5]) * (1 - f68) / fE0 + (series - buffer[fF0 - v6]) * f68 / fE8; 
        } 
      }
      else 
      { 
        if (f98 >= MathPow(fA0/f60, f88))
        { 
          v1 = MathPow(fA0/f60, f88);
        } 
        else 
          v1 = f98; 
        if (v1 < 1)
        { 
          v2 = 1;
        }
        else 
        { 
          if (f98 >= MathPow(fA0/f60, f88))
          { 
            v3 = MathPow(fA0/f60, f88);
          } 
          else 
            v3 = f98; 
          v2 = v3; 
        } 
        f58 = v2; 
        f70 = MathPow(f90, MathSqrt(f58)); 
        if (f28 > 0)
        { 
          f18 = f8;
        } 
        else 
        {
          f18 = f8 - f28 * f70; 
        }
        if (f48 < 0)
        { 
          f38 = f8; 
        }
        else 
        {
          f38 = f8 - f48 * f70;
        } 
      }   
    } 
  
    if (fF8 > 30) 
    {
      f30 = MathPow(f50, f58); 
      fC0 = (1 - f30) * series + f30 * fC0; 
      fC8 = (series - fC0) * (1 - f50) + f50 * fC8; 
      fD0 = f10 * fC8 + fC0; 
      f20 = -f30 * 2; 
      f40 = f30 * f30; 
      fB0 = f20 + f40 + 1; 
      fA8 = (fD0 - fB8) * fB0 + f40 * fA8; 
      fB8 = fB8 + fA8; 
    } 
    JMA= fB8; 
  } 
  if (fF0 <= 30)
  { 
    JMA=0;
  } 

//Print ("JMA is " + JMA + " shift is " + shift); 
  ExtMapBuffer1[shift-Offset]=JMA; 
  
  if (shift>0)
  { 
    AccountedBars=AccountedBars+1;
  }
}
//----
   return(0);
  }
//+------------------------------------------------------------------+