M.A.C.H_X_alert

//+------------------------------------------------------------------+
//|                                                   machXalert.mq4 |
//|                      Copyright © 2007, MetaQuotes Software Corp. |
//|                                        http://www.metaquotes.net |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2007, MetaQuotes Software Corp."
#property link      "http://www.metaquotes.net"

#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Yellow
#property indicator_color2 Red

#property indicator_width1 2
#property indicator_width2 2

double CrossUp[];
double CrossDown[];
extern int FasterSMA        = 12;
extern int FASTER_SMA_SHIFT = 3;
extern int SlowerSMA        = 25;
extern int SLOWER_SMA_SHIFT = 5;
extern bool Alerts = true;

int upalert=true,downalert=true;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicators
   SetIndexStyle(0, DRAW_ARROW, EMPTY);
   SetIndexArrow(0, 74);
   SetIndexBuffer(0, CrossUp);
   SetIndexStyle(1, DRAW_ARROW, EMPTY);
   SetIndexArrow(1, 74);
   SetIndexBuffer(1, CrossDown);
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
//---- 

//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start() {
   int limit, i, counter;
   double fasterSMAnow, slowerSMAnow, fasterSMAprevious, slowerSMAprevious, fasterSMAafter, slowerSMAafter;
   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--;

   limit=Bars-counted_bars;
   
   for(i = 0; i <= limit; i++) {
   
      counter=i;
      Range=0;
      AvgRange=0;
      for (counter=i ;counter<=i+9;counter++)
      {
         AvgRange=AvgRange+MathAbs(High[counter]-Low[counter]);
      }
      Range=AvgRange/10;
       
      fasterSMAnow = iMA(NULL, 0, FasterSMA, FASTER_SMA_SHIFT, MODE_SMA, PRICE_CLOSE, i);
      fasterSMAprevious = iMA(NULL, 0, FasterSMA, FASTER_SMA_SHIFT, MODE_SMA, PRICE_CLOSE, i+1);
      fasterSMAafter = iMA(NULL, 0, FasterSMA, FASTER_SMA_SHIFT, MODE_SMA, PRICE_CLOSE, i-1);

      slowerSMAnow = iMA(NULL, 0, SlowerSMA, SLOWER_SMA_SHIFT, MODE_SMA, PRICE_CLOSE, i);
      slowerSMAprevious = iMA(NULL, 0, SlowerSMA, SLOWER_SMA_SHIFT, MODE_SMA, PRICE_CLOSE, i+1);
      slowerSMAafter = iMA(NULL, 0, SlowerSMA, SLOWER_SMA_SHIFT, MODE_SMA, PRICE_CLOSE, i-1);
      
      if ((fasterSMAnow > slowerSMAnow) && (fasterSMAprevious < slowerSMAprevious) && (fasterSMAafter > slowerSMAafter)) {
         CrossUp[i] = Low[i] - Range*0.5;
         if(i<=2 && Alerts && !upalert)
           {
            Alert (Symbol()," ",Period(),"M  SMACross UP ");
            //SendMail("SMA Cross Up on "+Symbol(),"");
            upalert=true;
            downalert=false;
            }
      }
      else if ((fasterSMAnow < slowerSMAnow) && (fasterSMAprevious > slowerSMAprevious) && (fasterSMAafter < slowerSMAafter)) {
         CrossDown[i] = High[i] + Range*0.5;
         if(i<=2 && Alerts && !downalert)
           {
            Alert (Symbol()," ",Period(),"M  SMACross DOWN ");
            //SendMail("SMA Cross Down on "+Symbol(),"");
            downalert=true;
            upalert=false;
            }
      }
   }
   return(0);
}