EMA_Prediction

//+------------------------------------------------------------------+
//|                                               EMA_Prediction.mq4 |
//|                                                       Codersguru |
//|                                         http://www.forex-tsd.com |
//+------------------------------------------------------------------+


#property copyright "Codersguru"
#property link      "http://www.forex-tsd.com"

extern int ShortEma=1;
extern int LongEma=2;
extern bool Draw_Lines = false;


#property indicator_buffers 4
#property indicator_chart_window
#property indicator_color1 Blue
#property indicator_color2 Red
#property indicator_color3 Blue
#property indicator_color4 Red

double ExtMapBuffer1[];
double ExtMapBuffer2[];
double ExtMapBuffer3[];
double ExtMapBuffer4[];

double Signal1=0,Signal2=0;
int Previous_Bar = 0;


int init()
  {
  
      IndicatorBuffers(4);
      SetIndexStyle(0,DRAW_ARROW); 
      SetIndexStyle(1,DRAW_ARROW); 
      SetIndexArrow(0, 234);
      SetIndexArrow(1, 233);
      SetIndexBuffer(0,ExtMapBuffer1);
      SetIndexBuffer(1,ExtMapBuffer2);

      SetIndexStyle(2,DRAW_LINE, STYLE_SOLID,2);
      SetIndexBuffer(2,ExtMapBuffer3);
      SetIndexStyle(3,DRAW_LINE, STYLE_SOLID,2);
      SetIndexBuffer(3,ExtMapBuffer4);

   return(0);
  }





int start()
  {
   
   
   int    counted_bars=IndicatorCounted();
//---- 
   int pos = Bars - counted_bars - 1;
   
   while (pos>=0)
   {
   
   Signal1=0;
	Signal2=0;
	Previous_Bar=0;
	
	double EmaLongPrevious = iMA(NULL,0,LongEma,0,MODE_EMA, PRICE_CLOSE, pos-1);
	double EmaLongCurrent = iMA(NULL,0,LongEma,0,MODE_EMA, PRICE_CLOSE, pos);
	double EmaShortPrevious = iMA(NULL,0,ShortEma,0,MODE_EMA, PRICE_CLOSE, pos-1);
	double EmaShortCurrent = iMA(NULL,0,ShortEma,0,MODE_EMA, PRICE_CLOSE, pos);
   
   if (Open[pos] > Close[pos]) Previous_Bar = 1;
   if (Open[pos] < Close[pos]) Previous_Bar = 2;
   
   if (EmaShortPrevious<EmaLongPrevious && EmaShortCurrent>EmaLongCurrent && Previous_Bar == 1 ) Signal1=High[pos];
   if (EmaShortPrevious>EmaLongPrevious && EmaShortCurrent<EmaLongCurrent && Previous_Bar == 2 ) Signal2=Low[pos];   
    
   ExtMapBuffer1[pos-1]= Signal1+5*Point;
   ExtMapBuffer2[pos-1]=Signal2-5*Point;
    
    if(Draw_Lines)
    {
      ExtMapBuffer3[pos]= EmaLongCurrent;
      ExtMapBuffer4[pos]= EmaShortCurrent;
    }
     
    pos--;
   }

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