//+------------------------------------------------------------------+
//|                                                  BrainTrend2.mq4 |
//|                                                www.forex-tsd.com |
//|                                                Nick Bilak        |
//+------------------------------------------------------------------+
#property copyright "BrainTrading Inc."
#property link      "www.forex-tsd.com"

#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Blue
#property indicator_color2 Red
//---- input parameters
extern int       NumBars=500;
extern int       EnableAlerts=1;
extern int       SignalID=0;
//---- buffers
double ExtMapBuffer1[];
double ExtMapBuffer2[];
double spread;
static    double    tsig=0;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicators
   SetIndexStyle(0,DRAW_ARROW);
   SetIndexBuffer(0,ExtMapBuffer1);
   SetIndexArrow(0,233);
   SetIndexEmptyValue(0,0.0);
   SetIndexStyle(1,DRAW_ARROW);
   SetIndexBuffer(1,ExtMapBuffer2);
   SetIndexArrow(1,234);
   SetIndexEmptyValue(1,0.0);
   spread=MarketInfo(Symbol(),MODE_SPREAD)*Point;
   SetIndexDrawBegin(0,0);

//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custor indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
//---- 
   
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start() {
   int    counted_bars=IndicatorCounted();
	//---- 
   
	int       artp=7;
	double    dartp=7.0;
	double    cecf=0.7;
	int       satb=0;
	int       Shift=0;
	bool      river=True;
	double    Emaxtra=0;
	double    widcha=0;
	double    TR=0;
	double    Values[100];
	int       glava=0;
	double    ATR=0;
	int       J=0;
	double    Weight=0;
	double    r=0;
	double    r1=0;
	int       p=0;
	int       Curr=0;
	double    Range1=0;
	double    s=2;
	double    f=10;
	double    val1=0;
	double    val2=0;
	double    h11=0;
	double    h12=0;
	double    h13=0;
	double    const=0;
	double    orig=0;
	double    st=0;
	double    h2=0;
	double    h1=0;
	double    h10=0;
	double    sxs=0;
	double    sms=0;
	double    temp=0;
	double    h5=0;
	double    r1s=0;
	double    r2s=0;
	double    r3s=0;
	double    r4s=0;
	double    pt=0;
	double    pts=0;
	double    r2=0;
	double    r3=0;
	double    r4=0;
	double    tt=0;
	


   if( Bars < NumBars) satb = Bars; else satb = NumBars;
   if( Close[satb - 2] > Close[satb - 1]) river = True; else river = False;
   Emaxtra = Close[satb - 2];
   Shift=satb-3;
   while(Shift>=0)      {
      TR = spread+ High[Shift] - Low[Shift];
      if( MathAbs(spread+ High[Shift] - Close[Shift + 1]) > TR ) TR = MathAbs(spread+ High[Shift] - Close[Shift + 1]);
      if( MathAbs(Low[Shift] - Close[Shift + 1]) > TR)  TR = MathAbs(Low[Shift] - Close[Shift + 1]);
      if (Shift == satb - 3 ) {
         for(J=0;Shift<=artp-1;J++) { 
         	Values[J] = TR; 
         }
      }   
 		Values[glava] = TR;
      ATR = 0;
      Weight = artp;
      Curr = glava;
      for (J = 0;J<=artp - 1;J++) {
         ATR += Values[Curr] * Weight;
         Weight -= 1.0;
         Curr--;
         if (Curr == -1) Curr = artp - 1;
      }
      ATR = 2.0 * ATR / (dartp * (dartp + 1.0));
      glava++;
      if (glava == artp) glava = 0;
      widcha = cecf * ATR;
      if (river && Low[Shift] < Emaxtra - widcha) {
         river = False;
         Emaxtra = spread+ High[Shift];
      }
      if (!river && spread+ High[Shift] > Emaxtra + widcha) {
         river = True;
         Emaxtra = Low[Shift];
      }
      if (river && Low[Shift] > Emaxtra) {
         Emaxtra = Low[Shift];
      }
      if (!river && spread+ High[Shift] < Emaxtra ) {
         Emaxtra = spread+ High[Shift];
      }
      Range1 = iATR(NULL,0,10,Shift);
      val1 = 0;
      val2 = 0;
      if (river) {
         if (p != 1) r1 = Low[Shift] - Range1 * s / 3.0;
         if (p == 1) r1 = -1.0;
         if (r1 > 0) {
            val1 = r1;
            val2 = 0;
         } else {
            val1 = 0;
            val2 = 0;
         }
         ExtMapBuffer1[Shift]=val1;
         p = 1;
      } else {
         if (p != 2) r1 = spread+ High[Shift] + Range1 * s / 3.0;
         if (p == 2) r1 = -1.0;
         if (r1 > 0) {
            val1 = 0;
            val2 = r1;
         } else {
            val1 = 0;
            val2 = 0;
         }
         ExtMapBuffer2[Shift]=val2;
         p = 2;
      }
      Shift--;
   }
if (EnableAlerts == 1) 
   {
   if (val1 > 0 && tsig != 1)
      {
      tsig = 1;
      Alert(Symbol(), " ",Period()," Alert!! ", "BUY NOW !!");
      }
   if (val2 > 0 && tsig != 2) 
      {
      tsig = 2;
       
       Alert(Symbol(), " ",Period()," Alert!! ", "SELL NOW !!");
      }
   }
   return(0);
  }
//+------------------------------------------------------------------+