MA Crossover Shift Dots by Dr House

//+------------------------------------------------------------------+
//|   MA Crossover Shift Signal by Dr House.mq4                      |
//|   Copyright © 2009, Dr.House7                                    |
//+------------------------------------------------------------------+

#property copyright "Copyright © 2009, Dr.House7"
#property link      "http://www.sungold.it"

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

extern int FasterMA = 5;
extern int SlowerMA = 5;
extern double ArrowShift= 1.0;
extern int ma_method =1;
extern int ma_price  =0;
extern bool SoundON=false;
double alertTag;
double control=2147483647;
//---- buffers
double ExtMapBuffer1[];
double ExtMapBuffer2[];
 
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicators
   SetIndexStyle(0, DRAW_ARROW, EMPTY,1);
   SetIndexArrow(0, 159);
   SetIndexBuffer(0,ExtMapBuffer1);
   SetIndexStyle(1, DRAW_ARROW, EMPTY,1);
   SetIndexArrow(1, 159);
   SetIndexBuffer(1,ExtMapBuffer2);
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
//---- 

//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start() {
   int limit, i, counter;
   double fasterMAnow, slowerMAnow;
   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;
       
      fasterMAnow = iMA(NULL, 0, FasterMA, 0, ma_method, ma_price, i);
      slowerMAnow = iMA(NULL, 0, SlowerMA, 0, ma_method, ma_price, i+1);
             
      if ((fasterMAnow > slowerMAnow)) {
         ExtMapBuffer1[i]=Low[i]-ArrowShift*Range*0.5;
      }
      else if ((fasterMAnow < slowerMAnow)) {
          ExtMapBuffer2[i]=High[i]+ArrowShift*Range*0.5;
      }
        if (SoundON==true && i==1 && ExtMapBuffer1[i] > ExtMapBuffer2[i] && alertTag!=Time[0]){
         Alert("MA Shift Cross Trend going Down on ",Symbol()," ",Period());
        alertTag = Time[0];
      }
        if (SoundON==true && i==1 && ExtMapBuffer1[i] < ExtMapBuffer2[i] && alertTag!=Time[0]){
       Alert("MA Shift Cross Trend going Up on ",Symbol()," ",Period());
        alertTag = Time[0];
        } 
  }
   return(0);
}