Alert_3MA_Cross

//+--------------------------------------------------------------------------+
//| 2008forextsd mladen                    MA_Cross_3MACross_AlertWarningSig |
//+--------------------------------------------------------------------------+
#property copyright ""
#property link      ""

#property indicator_chart_window
#property indicator_buffers 4
#property indicator_color1 LawnGreen
#property indicator_color2 Magenta
#property indicator_color3 Yellow
#property indicator_color4 Gold
#property indicator_width1 2
#property indicator_width2 2
#property indicator_width3 1
#property indicator_width4 1

#import "SpeechDude.dll"
int MT_SpeechText(string text, int async);
#include <Conversions.mqh>
#import

//
//
//
//
//
extern string   MA_Mode = "SMA0 EMA1 SMMA2 LWMA3";
extern string	Price1 = "0-Close 1-Open 2-High 3-Low";
extern string 	Price2 = "4-Median/2 5-Typical/3 6-Weighted/4";
extern int FasterMA        = 6;
extern int FasterMode      = 1; // 0 = sma, 1 = ema, 2 = smma, 3 = lwma
extern int FasterPrice     = 6; // 0 = Close, 1 = Open, 2= High, 3 = Low, 4 = Median(high+low)/2, 5 = Typical (high+low+close)/3, 6 = Weighted close price, (high+low+close+close)/4
extern int FasterShift     = 0;
extern int MediumMA        = 200; 
extern int MediumMode      = 0; // 0 = sma, 1 = ema, 2 = smma, 3 = lwma
extern int MediumPrice     = 6; // 0 = Close, 1 = Open, 2= High, 3 = Low, 4 = Median(high+low)/2, 5 = Typical (high+low+close)/3, 6 = Weighted close price, (high+low+close+close)/4
extern int MediumShift     = 0;
extern int SlowerMA        = 25;
extern int SlowerMode      = 0; // 0 = sma, 1 = ema, 2 = smma, 3 = lwma
extern int SlowerPrice     = 1; // 0 = Close, 1 = Open, 2= High, 3 = Low, 4 = Median(high+low)/2, 5 = Typical (high+low+close)/3, 6 = Weighted close price, (high+low+close+close)/4
extern int SlowerShift     = 0;
extern bool crossesOnCurrent = false;
extern bool ShowCrossOnSlow  = false;
extern bool alertsOn         = true;
extern bool alertsMessage    = false;
extern bool alertsSound      = false;
extern bool alertsEmail      = false;
extern bool FullVoiceSupport = true;
extern double Offset		= 2.0;




//
//
//
//
//

double CrossUp[];
double CrossDown[];
double CrossWUp[];
double CrossWDown[];


//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
//
//
//
//
//

int init()
{
   SetIndexBuffer(0, CrossUp);    SetIndexStyle(0, DRAW_ARROW); SetIndexArrow(0, 233);
   SetIndexBuffer(1, CrossDown);  SetIndexStyle(1, DRAW_ARROW); SetIndexArrow(1, 234);
   SetIndexBuffer(2, CrossWUp);   SetIndexStyle(2, DRAW_ARROW); SetIndexArrow(2, 233);
   SetIndexBuffer(3, CrossWDown); SetIndexStyle(3, DRAW_ARROW); SetIndexArrow(3, 234);
   
      
   return(0);
}
int deinit()
{
   return(0);
}

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
//
//
//
//
//

int start()
{ 
   int    limit, i; 
   int    counted_bars=IndicatorCounted();
   double fasterMAnow, fasterMAprevious, fasterMAafter;
   double mediumMAnow, mediumMAprevious, mediumMAafter;
   double slowerMAnow, slowerMAprevious, slowerMAafter;
   

   if(counted_bars<0) return(-1);
   if(counted_bars>0) counted_bars--;
           limit=Bars-counted_bars;

   //
   //
   //
   //
   //
   //
   
   for(i = limit; i >=0; i--)
   {      
      double Range = 0.0;
      for (int counter=i ;counter<=i+9;counter++) Range += MathAbs(High[counter]-Low[counter]);
                                              Range /= 10;

      //
      //
      //
      //
      //
      
         fasterMAnow      = iMA(NULL, 0, FasterMA, FasterShift, FasterMode, FasterPrice, i);
         fasterMAprevious = iMA(NULL, 0, FasterMA, FasterShift, FasterMode, FasterPrice, i+1);
         mediumMAnow      = iMA(NULL, 0, MediumMA, MediumShift, MediumMode, MediumPrice, i);
         mediumMAprevious = iMA(NULL, 0, MediumMA, MediumShift, MediumMode, MediumPrice, i+1);
         slowerMAnow      = iMA(NULL, 0, SlowerMA, SlowerShift, SlowerMode, SlowerPrice, i);
         slowerMAprevious = iMA(NULL, 0, SlowerMA, SlowerShift, SlowerMode, SlowerPrice, i+1);

      //iMA(
      //
      //    avoid current bar if not allowed to check crosses on current (i==0)
      //
      //

         if (crossesOnCurrent==false && i==0) continue;
      
      //
      //
      //
      //
      //
      
      int    crossID=0;
      double curr;
      double prev;
      double point;
      while (true)
         {
            curr  =  fasterMAnow      - mediumMAnow;
            prev  =  fasterMAprevious - mediumMAprevious;
            point = (fasterMAnow      + fasterMAprevious)/2;
                  if (curr*prev<=0) { crossID=1; break; }
            if (ShowCrossOnSlow)
            {      
               curr  =  fasterMAnow      - slowerMAnow;
               prev  =  fasterMAprevious - slowerMAprevious;
                     if (curr*prev<=0) { crossID=2; break; }
               curr  =  mediumMAnow      - slowerMAnow;
               prev  =  mediumMAprevious - slowerMAprevious;
               point = (mediumMAnow      + mediumMAprevious)/2;
                     if (curr*prev<=0) { crossID=3; break; }
            }         
                                                 break;
         }
      
         //
         //
         //    the interesting thing is the direction of the crossing
         //    which MA is the primary and which one the secondary
         //    if you do not know that you can not determine the "direction"
         //    of the cross
         //
         //
         //
         
         CrossUp[i]    = EMPTY_VALUE;
         CrossDown[i]  = EMPTY_VALUE;
         CrossWUp[i]   = EMPTY_VALUE;
         CrossWDown[i] = EMPTY_VALUE;
         if (crossID>0)
         {
            if (alertsOn)
            if ((i==0 && crossesOnCurrent==true) || (i==1 && crossesOnCurrent==false))
            {
               switch (crossID)
               {
                  case 1: 
                        if(curr>0) 
                        {
                        	doAlert(" 3MACross: Fast MA crossed Medium MA UP");
                        	DoAlertAudible("Average cross long");
                        }	
                        else       
                        {
                        	doAlert(" 3MACross: Fast MA crossed Medium MA DOWN"); 
                        	DoAlertAudible("Average cross short");
                        }                        
                        break;
                  case 2: 
                        if(curr>0) 
                        {
                        	doAlert(" 3MACross: Fast MA crossed Slow MA UP");
                        	DoAlertAudible("Average cross long");
                        }	
                        else
                        {
                        	doAlert(" 3MACross: Fast MA crossed Slow MA DOWN"); 
                        	DoAlertAudible("Average cross short");
                        }	
                        break;
                  case 3: 
                        if(curr>0) 
                        {
                        	doAlert(" 3MACross: Medium MA crossed Slow MA UP");
                        	DoAlertAudible("Average cross long");
                        }	
                        else       
                        {
                        	doAlert(" 3MACross: Medium MA crossed Slow MA DOWN"); 
                        	DoAlertAudible("Average cross short");
                        }	
                        break;
               }
            }               

            //
            //
            //
            //
            //
            

            if (i==0)
            {
               if (curr>0)
                     CrossWUp[i]   = point - Range*Offset;
               else  CrossWDown[i] = point + Range*Offset;
            }               
            else
            {               
               if (curr>0)
                     CrossUp[i]   = point - Range*Offset;
               else  CrossDown[i] = point + Range*Offset;
            }               
         }               
   }   
   return(0);
 }


//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
//
//
//
//
void DoAlertAudible(string str)
{
	static string   previousVoiceAlert="nothing";
   	static datetime previousVoiceTime;
   	//string message;
   
      if (previousVoiceAlert != str || previousVoiceTime != Time[0]) 
      {
          previousVoiceAlert  = str;
          previousVoiceTime   = Time[0];
          
		if (FullVoiceSupport)
			MT_SpeechText(Symbol2LongName() + ", " + TimeFrame2LongName(Period()) + ", "  + str, 1);
	}		
}

 
void doAlert(string doWhat)
{
   static string   previousAlert="nothing";
   static datetime previousTime;
   string message;
   
      if (previousAlert != doWhat || previousTime != Time[0]) {
          previousAlert  = doWhat;
          previousTime   = Time[0];

          //
          //
          //
          //
          //
//        if time needed :
//        message =  StringConcatenate(Symbol()," at ",TimeToStr(TimeLocal(),TIME_SECONDS)," @",Bid," ", doWhat);
//
  
          message =  StringConcatenate(Symbol()," at ",Bid," ", doWhat);
             if (alertsMessage) Alert(message);
             if (alertsEmail)   SendMail(StringConcatenate(Symbol()," 3MACross:"," M",Period()),message);
             if (alertsSound)   PlaySound("alert2.wav");
      }
}