//+------------------------------------------------------------------+
//|                                            Heiken Ashi Ma T3.mq4 |
//+------------------------------------------------------------------+
//|                                                                  |
//|                                               2009 mod by mladen |
//|  tools copied and pasted alerts from another HA indy so blame me |
//+------------------------------------------------------------------+
#property copyright "found and uploaded by Soixer"
#property link      "http://e-sito.ru/"

#property indicator_chart_window
#property indicator_buffers 6
#property indicator_color1 Red
#property indicator_color2 RoyalBlue
#property indicator_color3 Red
#property indicator_color4 RoyalBlue
#property indicator_color5 Aqua
#property indicator_color6 Magenta
#property indicator_width1 1
#property indicator_width2 1
#property indicator_width3 2
#property indicator_width4 2
#property indicator_width5 1
#property indicator_width6 1

//
//
//
//
//

extern int    MaPeriod         = 10;
extern int    MaMetod          =  2;
extern int    Step             = 10;
extern bool   BetterFormula    = false;
extern bool   T3Average        = true;
extern double T3Hot            = 0.618;
extern bool   T3Original       = false;
extern bool   ShowArrows       = true;
extern string _                = "Alerts settings";
extern bool   Alerts.On        = true;
extern bool   Alerts.OnCurrent = false;
extern bool   Alerts.Message   = true;
extern bool   Alerts.Sound     = false;
extern bool   Alerts.Email     = false;

//
//
//
//
//

double ExtMapBuffer1[];
double ExtMapBuffer2[];
double ExtMapBuffer3[];
double ExtMapBuffer4[];
double UpArrow[];
double DnArrow[];
//
//
//
//
//

double emas[][24];
double alpha;
double c1;
double c2;
double c3;
double c4;


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

int init()
{
   SetIndexBuffer(0, ExtMapBuffer1); SetIndexStyle(0,DRAW_HISTOGRAM);
   SetIndexBuffer(1, ExtMapBuffer2); SetIndexStyle(1,DRAW_HISTOGRAM);
   SetIndexBuffer(2, ExtMapBuffer3); SetIndexStyle(2,DRAW_HISTOGRAM);
   SetIndexBuffer(3, ExtMapBuffer4); SetIndexStyle(3,DRAW_HISTOGRAM);
   
   SetIndexBuffer(4, UpArrow); SetIndexArrow(4,233);
   SetIndexBuffer(5, DnArrow); SetIndexStyle(5,DRAW_ARROW); SetIndexArrow(5,234);
   if (ShowArrows)
   {
      SetIndexStyle(4,DRAW_ARROW);       
      SetIndexStyle(5,DRAW_ARROW);       
   }
   else
   {
      SetIndexStyle(4,DRAW_NONE);       
      SetIndexStyle(5,DRAW_NONE);       
   }


   //
   //
   //
   //
   //
   
      double a  = T3Hot;
             c1 = -a*a*a;
             c2 =  3*(a*a+a*a*a);
             c3 = -3*(2*a*a+a+a*a*a);
             c4 = 1+3*a+a*a*a+3*a*a;

      MaPeriod = MathMax(1,MaPeriod);
      if (T3Original)
           alpha = 2.0/(1.0 + MaPeriod);
      else alpha = 2.0/(2.0 + (MaPeriod-1.0)/2.0);

   return(0);
}

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

int start()
{
   double maOpen, maClose, maLow, maHigh;
   double haOpen, haClose, haLow, haHigh;
   int    counted_bars=IndicatorCounted();
   int    pointModifier;
   int    i,limit;

   //
   //
   //
   //
   //
   if(counted_bars<0) return(-1);
   if(counted_bars>0) counted_bars--;
         limit = Bars-counted_bars;
         if (ArrayRange(emas,0) != Bars) ArrayResize(emas,Bars);
         if (Digits==3 || Digits==5)
               pointModifier = 10;
         else  pointModifier = 1;               
          
   //
   //
   //
   //
   //
   
   for(int pos=limit; pos >= 0; pos--)
   {
      if (T3Average)
         {
            maOpen  = iT3(Open[pos] ,pos, 0);
            maClose = iT3(Close[pos],pos, 6);
            maLow   = iT3(Low[pos]  ,pos,12);
            maHigh  = iT3(High[pos] ,pos,18);
         }
      else
         {
            maOpen  = iMA(NULL,0,MaPeriod,0,MaMetod,PRICE_OPEN ,pos);
            maClose = iMA(NULL,0,MaPeriod,0,MaMetod,PRICE_CLOSE,pos);
            maLow   = iMA(NULL,0,MaPeriod,0,MaMetod,PRICE_LOW  ,pos);
            maHigh  = iMA(NULL,0,MaPeriod,0,MaMetod,PRICE_HIGH ,pos);
         }
   
      //
      //
      //
      //
      //
        
         if (BetterFormula) {
               if (maHigh!=maLow)
                     haClose = (maOpen+maClose)/2+(((maClose-maOpen)/(maHigh-maLow))*MathAbs((maClose-maOpen)/2));
               else  haClose = (maOpen+maClose)/2; }
         else        haClose = (maOpen+maHigh+maLow+maClose)/4;
                     haOpen   = (ExtMapBuffer3[pos+1]+ExtMapBuffer4[pos+1])/2;
                     haHigh   = MathMax(maHigh, MathMax(haOpen,haClose));
                     haLow    = MathMin(maLow,  MathMin(haOpen,haClose));

         if (haOpen<haClose) { ExtMapBuffer1[pos]=haLow;  ExtMapBuffer2[pos]=haHigh; } 
         else                { ExtMapBuffer1[pos]=haHigh; ExtMapBuffer2[pos]=haLow;  } 
                               ExtMapBuffer3[pos]=haOpen;
                               ExtMapBuffer4[pos]=haClose;
      
      //
      //
      //
      //
      //

      if (Step>0)
      {
         if( MathAbs(ExtMapBuffer1[pos]-ExtMapBuffer1[pos+1]) < Step*pointModifier*Point ) ExtMapBuffer1[pos]=ExtMapBuffer1[pos+1];
         if( MathAbs(ExtMapBuffer2[pos]-ExtMapBuffer2[pos+1]) < Step*pointModifier*Point ) ExtMapBuffer2[pos]=ExtMapBuffer2[pos+1];
         if( MathAbs(ExtMapBuffer3[pos]-ExtMapBuffer3[pos+1]) < Step*pointModifier*Point ) ExtMapBuffer3[pos]=ExtMapBuffer3[pos+1];
         if( MathAbs(ExtMapBuffer4[pos]-ExtMapBuffer4[pos+1]) < Step*pointModifier*Point ) ExtMapBuffer4[pos]=ExtMapBuffer4[pos+1];
      }         
      UpArrow[pos]=EMPTY_VALUE;
      DnArrow[pos]=EMPTY_VALUE;
        
      if (ExtMapBuffer3[pos]<ExtMapBuffer4[pos] && ExtMapBuffer4[pos+1]<ExtMapBuffer3[pos+1]) UpArrow[pos]=ExtMapBuffer4[pos+1]-(Ask-Bid);
      if (ExtMapBuffer3[pos]>ExtMapBuffer4[pos] && ExtMapBuffer4[pos+1]>ExtMapBuffer3[pos+1]) DnArrow[pos]=ExtMapBuffer4[pos+1]+(Ask-Bid);
   }
    
   //
   //
   //
   //
   //
         
   if (Alerts.On)
   {
      if (Alerts.OnCurrent)
            int whichBar=0;
      else      whichBar=1;            
      if (UpArrow[whichBar]!= EMPTY_VALUE) doAlert("HAma buy");   
      if (DnArrow[whichBar]!= EMPTY_VALUE) doAlert("HAma sell"); 
   }      
   return(0);
}

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

double iT3(double price,int shift,int buffer)
{
   int i = Bars-shift-1;
   if (i < 1)
      {
         emas[i][0+buffer] = price;
         emas[i][1+buffer] = price;
         emas[i][2+buffer] = price;
         emas[i][3+buffer] = price;
         emas[i][4+buffer] = price;
         emas[i][5+buffer] = price;
      }
   else
      {
         emas[i][0+buffer] = emas[i-1][0+buffer]+alpha*(price            -emas[i-1][0+buffer]);
         emas[i][1+buffer] = emas[i-1][1+buffer]+alpha*(emas[i][0+buffer]-emas[i-1][1+buffer]);
         emas[i][2+buffer] = emas[i-1][2+buffer]+alpha*(emas[i][1+buffer]-emas[i-1][2+buffer]);
         emas[i][3+buffer] = emas[i-1][3+buffer]+alpha*(emas[i][2+buffer]-emas[i-1][3+buffer]);
         emas[i][4+buffer] = emas[i-1][4+buffer]+alpha*(emas[i][3+buffer]-emas[i-1][4+buffer]);
         emas[i][5+buffer] = emas[i-1][5+buffer]+alpha*(emas[i][4+buffer]-emas[i-1][5+buffer]);
      }
   return(c1*emas[i][5+buffer] + c2*emas[i][4+buffer] + c3*emas[i][3+buffer] + c4*emas[i][2+buffer]);
}

//
//
//
//
//

void doAlert(string doWhat)
{
   static string   previousAlert="";
   static datetime previousTime=0;
   string          message;
   
   if (previousAlert != doWhat || previousTime != Time[0])
   {
       previousAlert = doWhat;
       previousTime  = Time[0];

       //
       //
       //
       //
       //

       message =  StringConcatenate(Symbol()," at ",TimeToStr(TimeLocal(),TIME_SECONDS)," Heiken ashi MA T3 : ",doWhat);
          if (Alerts.Message) Alert(message);
          if (Alerts.Email)   SendMail(StringConcatenate(Symbol(),"Heiken ashi MA T3 "),message);
          if (Alerts.Sound)   PlaySound("alert2.wav");
   }
}