//+------------------------------------------------------------------+
//|                                           ADX Crossing_Alert.mq4 |
//|                      Copyright © 2006, MetaQuotes Software Corp. |
//|                                        http://www.metaquotes.net |
//|                                  modified by Rob Rice (blueruby) |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2006, MetaQuotes Software Corp."
#property link      "http://www.metaquotes.net"

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

//---- input parameters
extern int ADXbars=7;
extern int CountBars=350;
extern bool UseSound = True,
            ShowAlert = True;
extern string SoundFile = "alert.wav"; 

//---- buffers
double val1[];
double val2[];
double b4plusdi,nowplusdi,b4minusdi,nowminusdi;
bool SoundBuy = False;
bool SoundSell = False;

//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
   string short_name;
//---- indicator line
   IndicatorBuffers(2);
   SetIndexStyle(0,DRAW_ARROW);
   SetIndexArrow(0,233);
   SetIndexStyle(1,DRAW_ARROW);
   SetIndexArrow(1,234);
   SetIndexBuffer(0,val1);
   SetIndexBuffer(1,val2);
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| AltrTrend_Signal_v2_2                                            |
//+------------------------------------------------------------------+
int start()
   {   
   if (CountBars>=Bars) CountBars=Bars;
   SetIndexDrawBegin(0,Bars-CountBars);
   SetIndexDrawBegin(1,Bars-CountBars);
   int i,shift,limit,CountedBars = IndicatorCounted();
   
   if (CountedBars < 1)
      {
      for (i=0; i<=CountBars; i++) {val1[i] = 0.0; val2[i] = 0.0;}
      }    
   
   if(CountedBars > 0) CountedBars--;
   limit = Bars - CountedBars;   

   for (shift = limit; shift>=0; shift--) 
      { 
      b4plusdi=iADX(NULL,0,ADXbars,PRICE_CLOSE,MODE_PLUSDI,shift+1);
	   nowplusdi=iADX(NULL,0,ADXbars,PRICE_CLOSE,MODE_PLUSDI,shift);
	   b4minusdi=iADX(NULL,0,ADXbars,PRICE_CLOSE,MODE_MINUSDI,shift+1);
	   nowminusdi=iADX(NULL,0,ADXbars,PRICE_CLOSE,MODE_MINUSDI,shift); 

      if (b4plusdi<b4minusdi && nowplusdi>nowminusdi)
         {
	     val1[shift]=Low[shift]-5*Point;
         }
      
      if (b4plusdi>b4minusdi && nowplusdi<nowminusdi) 
         {
	     val2[shift]=High[shift]+5*Point;
         }
      }
   
   if (val1[0] != EMPTY_VALUE && val1[0] != 0 && SoundBuy)
      {
      SoundBuy = False;
      if (UseSound) PlaySound (SoundFile);
      Comment (Symbol()," ",Period(),"ADX Crossing BUY @ ",Ask);
      if(ShowAlert) Alert (Symbol()," ",Period(),"M, ADX Crossing BUY @ ",Ask);
      } 

   if (!SoundBuy && (val1[0] == EMPTY_VALUE || val1[0] == 0)) SoundBuy = True;  
  
   if (val2[0] != EMPTY_VALUE && val2[0] != 0 && SoundSell)
      {   
      SoundSell = False;
      if (UseSound) PlaySound (SoundFile);
      Comment (Symbol()," ",Period(), "ADX Crossing Sell @",Bid);
      if(ShowAlert) Alert (Symbol()," ",Period(), "M, ADX Crossing Sell @",Bid);
      }
   
   if (!SoundSell && (val2[0] == EMPTY_VALUE || val2[0] == 0)) SoundSell = True;  
     
   return(0);
   }
//+------------------------------------------------------------------+