SMA Cross Over ArrowAlert

//+------------------------------------------------------------------+
//|                                         SMA-Crossover_Signal.mq4 |
//|                         |
//+------------------------------------------------------------------+

/*
  +------------------------------------------------------------------+
  | Allows you to enter two sma periods and it will then show you at |
  | Which point they crossed over. It is more usful on the shorter   |
  | periods that get obscured by the bars / candlesticks and when    |
  | the zoom level is out. Also allows you then to remove the smas   |
  | from the chart.              
  +------------------------------------------------------------------+
*/   



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

double CrossUp[];
double CrossDown[];
extern int FasterSMA = 14;
extern int SlowerSMA = 34;
extern int SoundAlert  =    1; // 0 = disabled
extern int PopUpAlert = 1;
extern string BuySoundFile = "alert.wav";
extern string SellSoundFile = "alert2.wav";
extern int EmailAlert  =    1;
double prevtime;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicators
   SetIndexStyle(0, DRAW_ARROW, EMPTY);
   SetIndexArrow(0, 233);
   SetIndexBuffer(0, CrossUp);
   SetIndexStyle(1, DRAW_ARROW, EMPTY);
   SetIndexArrow(1, 234);
   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, 0, MODE_SMA, PRICE_CLOSE, i);
      fasterSMAprevious = iMA(NULL, 0, FasterSMA, 0, MODE_SMA, PRICE_CLOSE, i+1);
      fasterSMAafter = iMA(NULL, 0, FasterSMA, 0, MODE_SMA, PRICE_CLOSE, i-1);

      slowerSMAnow = iMA(NULL, 0, SlowerSMA, 0, MODE_SMA, PRICE_OPEN, i);
      slowerSMAprevious = iMA(NULL, 0, SlowerSMA, 0, MODE_SMA, PRICE_OPEN, i+1);
      slowerSMAafter = iMA(NULL, 0, SlowerSMA, 0, MODE_SMA, PRICE_OPEN, i-1);
      if ((fasterSMAnow > slowerSMAnow) && (fasterSMAprevious < slowerSMAprevious) && (fasterSMAafter > slowerSMAafter)) {
         CrossUp[i] = Low[i] - Range*0.5;
      }
      else if ((fasterSMAnow < slowerSMAnow) && (fasterSMAprevious > slowerSMAprevious) && (fasterSMAafter < slowerSMAafter)) {
         CrossDown[i] = High[i] + Range*0.5;
      }
   }
      if ((CrossUp[0] > 2000) && (CrossDown[0] > 2000)) { prevtime = 0; }
      
      if ((CrossUp[0] == Low[0] - Range*0.5) && (prevtime != Time[0]))
       {
         prevtime = Time[0];
         if (SoundAlert != 0)PlaySound(BuySoundFile);
         if (EmailAlert != 0) SendMail("BUY Alert for " + Symbol(), " 3 MA Cross Up @  Hour " + Hour() + "  Minute " + Minute());
         if (PopUpAlert != 0)Alert(Symbol()," 3 MA Cross Up @  Hour ",Hour(),"  Minute ",Minute());
       }
      
      if ((CrossDown[0] == High[0] + Range*0.5) && (prevtime != Time[0]))
       {
         prevtime = Time[0];
         if (SoundAlert != 0)PlaySound(SellSoundFile);
         if (EmailAlert != 0) SendMail("SELL Alert for " + Symbol(), " 3 MA Cross Down @  Hour " + Hour() + "  Minute " + Minute());
         if (PopUpAlert != 0)Alert(Symbol()," 3 MA Cross Down @  Hour ",Hour(),"  Minute ",Minute());
       }
   return(0);
}