//+--------------------------------------------------------------------------+
//| 3 MA Cross w_Alert v2.mq4                                                |
//| Copyright © 2005, Jason Robinson (jnrtrading)                            |
//| http://www.jnrtading.co.uk                                               |
//| 3 ma conversion and Alert , David Honeywell , transport.david@gmail.com  |
//| http://finance.groups.yahoo.com/group/MetaTrader_Experts_and_Indicators/ |
//+--------------------------------------------------------------------------+
/*
  +-------------------------------------------------------------------------------+
  | Allows you to enter 3 ma periods and it will then show you and alert you at   |
  | which point the 2 faster ma's "OPEN" are both above or below the Slowest ma . |
  +-------------------------------------------------------------------------------+
*/   
#property copyright "Copyright © 2005, Jason Robinson (jnrtrading)"
#property link      "http://www.jnrtrading.co.uk"
//----
#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Green
#property indicator_color2 Red
//----
double CrossUp[];
double CrossDown[];
double prevtime;
double Range, AvgRange;
//double fasterMAnow, fasterMAprevious, fasterMAafter;
//double mediumMAnow, mediumMAprevious, mediumMAafter;
//double slowerMAnow, slowerMAprevious, slowerMAafter;
 double ACCurrent, ACPrevious;
 double MacdCurrent, MacdPrevious, SignalCurrent, SignalPrevious;
 extern int FastMA=5;
 extern int SlowMA=15;
 extern int SignalMA=1;
 
//----


extern int SoundAlert =    1; // 0 = disabled
extern bool SignalMail = False;


int Current;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
  
//---- indicators
   SetIndexStyle(0, DRAW_ARROW, 0,1 );
   SetIndexArrow(0, 233);
   SetIndexBuffer(0, CrossUp);
   SetIndexStyle(1, DRAW_ARROW, 0,1);
   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; 
   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;
//----       

   
      ACCurrent = iAC(NULL, 0, Current + i);
      ACPrevious = iAC(NULL, 0, Current + i+1);    
      
      MacdCurrent=iCustom(NULL, 0, "ZeroLag MACD", FastMA, SlowMA, SignalMA, 0, i);
      MacdPrevious=iCustom(NULL, 0, "ZeroLag MACD", FastMA, SlowMA, SignalMA, 0, i+1);
      SignalCurrent=iCustom(NULL, 0, "ZeroLag MACD", FastMA, SlowMA, SignalMA, 1, i);
      SignalPrevious=iCustom(NULL, 0, "ZeroLag MACD", FastMA, SlowMA, SignalMA, 1, i+1);
      
   

//----      
      if (MacdCurrent>0 && MacdPrevious<0)
       {
         CrossUp[i] = Low[i] - Range*0.6;
       }       
      if (MacdCurrent<0 && MacdPrevious>0)
       {
         CrossDown[i] = High[i] + Range*0.6;
       }      
    }   
      if ((CrossUp[0] > 2000) && (CrossDown[0] > 2000)) { prevtime = 0; } 
      if ((CrossUp[0] == Low[0] - Range*0.5) && (prevtime != Time[0]) && (SoundAlert != 0))
       {
         prevtime = Time[0];
   //      Alert(Symbol()," AC Buy @  Hour ",Hour(),"  Minute ",Minute());
  //       Alert(Symbol()," AC Cross Up, Period() ");
  //         Alert("Macd Cross UP ", "[" + Symbol() + "], " , "[" + Period() + "] ");  
           Alert(Symbol()+", "+Period()+ " Macd Cross Up  ");
           
      if (SignalMail) SendMail("[Signal Alert]", "[" + Symbol() + "] " + DoubleToStr(Ask, Digits) + " AC Cross Up ");  
       }      
      if ((CrossDown[0] == High[0] + Range*0.5) && (prevtime != Time[0]) && (SoundAlert != 0))
       {
         prevtime = Time[0];
  //       Alert(Symbol()," AC Sell @  Hour ",Hour(),"  Minute ",Minute());
  //       Alert(Symbol()," AC Cross Down, Period() ");
  //         Alert("Macd Cross Down ", "[" + Symbol() + "], " , "[" + Period() + "] ");
          Alert(Symbol()+", "+Period()+ " Macd Cross Down  ");
  
      if (SignalMail) SendMail("[Signal Alert]", "[" + Symbol() + "] " + DoubleToStr(Ask, Digits) + " AC Cross Down ");  
       }   
   //Comment("  CrossUp[0]  ",CrossUp[0]," ,  CrossDown[0]  ",CrossDown[0]," ,  prevtime  ",prevtime);
   //Comment("");   
   return(0);
 }
 //-------------------------------------------------------+