//+--------------------------------------------------------------------------+
//| 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 Red
#property indicator_color2 Green
//----
double CrossUp[];
double CrossDown[];
double prevtime;
double Range,AvgRange;
double fasterMAnow,fasterMAprevious,fasterMAafter;
double mediumMAnow,mediumMAprevious,mediumMAafter;
double slowerMAnow,slowerMAprevious,slowerMAafter;
//----
extern int FasterMA    =    5;
extern int FasterShift =   -5;
extern int FasterMode=1; // 0 = sma, 1 = ema, 2 = smma, 3 = lwma
extern int MediumMA    =   20;
extern int MediumShift =   -5;
extern int MediumMode=1; // 0 = sma, 1 = ema, 2 = smma, 3 = lwma
extern int SlowerMA    =   34;
extern int SlowerShift =    0;
extern int SlowerMode=    1; // 0 = sma, 1 = ema, 2 = smma, 3 = lwma
extern int SoundAlert=    1; // 0 = disabled
//+------------------------------------------------------------------+
//| 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 i,counter;
   int counted_bars=IndicatorCounted();
   if(counted_bars<0) return(-1);
   if(counted_bars>0) counted_bars--;
   int limit=Bars-counted_bars;
   if(counted_bars==0) limit-=1+9;
//----   
   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, FasterShift, FasterMode, PRICE_CLOSE, i+1);
      fasterMAprevious = iMA(NULL, 0, FasterMA, FasterShift, FasterMode, PRICE_CLOSE, i+2);
      fasterMAafter    = iMA(NULL, 0, FasterMA, FasterShift, FasterMode, PRICE_CLOSE, i-1);
      //----      
      mediumMAnow      = iMA(NULL, 0, MediumMA, MediumShift, MediumMode, PRICE_CLOSE, i+1);
      mediumMAprevious = iMA(NULL, 0, MediumMA, MediumShift, MediumMode, PRICE_CLOSE, i+2);
      mediumMAafter    = iMA(NULL, 0, MediumMA, MediumShift, MediumMode, PRICE_CLOSE, i-1);
      //----      
      slowerMAnow      = iMA(NULL, 0, SlowerMA, SlowerShift, SlowerMode, PRICE_CLOSE, i+1);
      slowerMAprevious = iMA(NULL, 0, SlowerMA, SlowerShift, SlowerMode, PRICE_CLOSE, i+2);
      slowerMAafter    = iMA(NULL, 0, SlowerMA, SlowerShift, SlowerMode, PRICE_CLOSE, i-1);
      //----      
      if((fasterMAnow>slowerMAnow && 
         fasterMAprevious<=slowerMAprevious && 
         fasterMAafter>slowerMAafter && 
         mediumMAnow>slowerMAnow)
         || 
         (fasterMAnow>slowerMAnow && 
         mediumMAnow>slowerMAnow && 
         mediumMAprevious<=slowerMAprevious && 
         mediumMAafter>slowerMAafter))
        {
         CrossUp[i]=Low[i]-Range*0.5;
        }
      if((fasterMAnow<slowerMAnow && 
         fasterMAprevious>=slowerMAprevious && 
         fasterMAafter<slowerMAafter && 
         mediumMAnow<slowerMAnow)
         || 
         (fasterMAnow<slowerMAnow && 
         mediumMAnow<slowerMAnow && 
         mediumMAprevious>=slowerMAprevious && 
         mediumMAafter<slowerMAafter))
        {
         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]) && (SoundAlert!=0))
     {
      prevtime=Time[0];
      Alert(Symbol()," 3 MA Cross Up @  Hour ",Hour(),"  Minute ",Minute());
     }
   if((CrossDown[0]==High[0]+Range*0.5) && (prevtime!=Time[0]) && (SoundAlert!=0))
     {
      prevtime=Time[0];
      Alert(Symbol()," 3 MA Cross Down @  Hour ",Hour(),"  Minute ",Minute());
     }
//Comment("  CrossUp[0]  ",CrossUp[0]," ,  CrossDown[0]  ",CrossDown[0]," ,  prevtime  ",prevtime);
//Comment("");   
   return(0);
  }
//-------------------------------------------------------+