EM12-21

//+------------------------------------------------------------------+
//|                                         EM5-Cross.mq4            |
//|         Copyright © 2005, Harmeet Singh                          |
//|                   grabapip@yahoo.com                             |
//+------------------------------------------------------------------+


#property copyright "Harmeet Singh"
#property link      "grabapip@yahoo.com"

#property indicator_chart_window
#property indicator_buffers 3
#property indicator_color1 Blue
#property indicator_color2 Orange
#property indicator_color3 Red

extern int MA_Period=13;
extern int MA_Shift=0;
extern int MA_Method=0;
extern int AllBars=250;

double ExtMapBuffer[];
double CrossUp[];
double CrossDown[];
extern int FasterEMA = 12;
extern int SlowerEMA = 21;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
  int    draw_begin;
   string short_name;
//---- drawing settings
   SetIndexStyle(0,DRAW_LINE);
   SetIndexShift(0,MA_Shift);
   IndicatorDigits(MarketInfo(Symbol(),MODE_DIGITS));
   if(MA_Period<2) MA_Period=13;
   draw_begin=MA_Period-1;
   
//---- indicators
   SetIndexStyle(0, DRAW_ARROW, EMPTY);
   SetIndexArrow(0, 233);
   SetIndexBuffer(0, CrossUp);
   SetIndexStyle(1, DRAW_ARROW, EMPTY);
   SetIndexArrow(1, 234);
   SetIndexBuffer(1, CrossDown);
   //---- indicator short name
   switch(MA_Method)
     {
      case 1 : short_name="EMA(";  draw_begin=0; break;
      case 2 : short_name="SMMA("; break;
      case 3 : short_name="LWMA("; break;
      default :
         MA_Method=0;
         short_name="SMA(";
     }
   IndicatorShortName(short_name+MA_Period+")");
   SetIndexDrawBegin(0,draw_begin);
//---- indicator buffers mapping
   SetIndexBuffer(0,ExtMapBuffer);
//---- initialization done
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
//---- 

//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start() {
   int i, counter;
   
   double fasterEMAnow, slowerEMAnow, fasterEMAprevious, slowerEMAprevious, fasterEMAafter, slowerEMAafter, cu;
   double Range, AvgRange;
   int counted_bars=IndicatorCounted();
//---- check for possible errors
   if(counted_bars<0) return(-1);
//---- last counted bar will be recounted
   if(counted_bars>0) counted_bars--;
   int limit = Bars-counted_bars-1;
   if (limit > AllBars) limit = AllBars;
   
   for(i=limit; i > 0; i--) {
   
      counter=i;
      Range=0;
      AvgRange=0;
            
      for (counter=i ;counter<=i+9;counter++)
      {
         AvgRange=AvgRange+MathAbs(High[counter]-Low[counter]);
      }
      Range=AvgRange/10;
       
      fasterEMAnow = iMA(NULL, 0, FasterEMA, 0, MODE_EMA, PRICE_CLOSE, i);
      fasterEMAprevious = iMA(NULL, 0, FasterEMA, 0, MODE_EMA, PRICE_CLOSE, i+1);
      fasterEMAafter = iMA(NULL, 0, FasterEMA, 0, MODE_EMA, PRICE_CLOSE, i-1);

      slowerEMAnow = iMA(NULL, 0, SlowerEMA, 0, MODE_EMA, PRICE_CLOSE, i);
      slowerEMAprevious = iMA(NULL, 0, SlowerEMA, 0, MODE_EMA, PRICE_CLOSE, i+1);
      slowerEMAafter = iMA(NULL, 0, SlowerEMA, 0, MODE_EMA, PRICE_CLOSE, i-1);
      
      if ((fasterEMAnow > slowerEMAnow) && (fasterEMAprevious < slowerEMAprevious) && (fasterEMAafter > slowerEMAafter)) {
         CrossUp[i] = Low[i] - Range*0.5; 
//       if(limit<=2)
//            {
//            Alert (Symbol()," ",Period(),"-Min. BUY Crossed Up at ",  CrossUp[i]);
//            }
         
      }
      else if ((fasterEMAnow < slowerEMAnow) && (fasterEMAprevious > slowerEMAprevious) && (fasterEMAafter < slowerEMAafter)) {
         CrossDown[i] = High[i] + Range*0.5; 
         
//        if(limit<=2)
//           {
//          Alert (Symbol()," ",Period(),"-Min. SELL Crossed Down at ",  CrossDown[i]);
//         }
      
      } 
   }
   return(0);
}