TRIX-with-alert

//+------------------------------------------------------------------+
//|                                                         TRIX.mq4 |
//|                                                                  |
//|                                        http://www.metaquotes.net |
//+------------------------------------------------------------------+

#property copyright "Lightning Signals"
#property link "http://www.metaquotes.net"
//---- indicator settings
#property indicator_separate_window
#property indicator_buffers 2
#property indicator_color1 Green
#property indicator_color2 Crimson
#property  indicator_width1  2
#property  indicator_width2  2
//---- input parameters
extern int TRIXPeriod = 4;
extern int TRIXSignal = 4 ;
extern int MAAppliedPrice = 0;
extern bool Email=true;
extern bool Sound=true;

// PRICE_CLOSE 0 Close price. 
// PRICE_OPEN 1 Open price. 
// PRICE_HIGH 2 High price. 
// PRICE_LOW 3 Low price. 
// PRICE_MEDIAN 4 Median price, (high+low)/2. 
// PRICE_TYPICAL 5 Typical price, (high+low+close)/3. 
// PRICE_WEIGHTED 6 Weighted close price, (high+low+close+close)/4. 



//extern int Desplazar = 1;
//---- buffers
double TRIX_Buffer[];
double Signal_Buffer[];
double EMA1_buffer[];
double EMA2_buffer[];
double EMA3_buffer[];

//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
//---- 3 additional buffers are used for counting.
IndicatorBuffers(5);
SetIndexBuffer(2,EMA1_buffer);
SetIndexBuffer(3,EMA2_buffer);
SetIndexBuffer(4,EMA3_buffer);

//---- indicators - drawing settings
SetIndexStyle(0,DRAW_LINE);
SetIndexBuffer(0,TRIX_Buffer);
SetIndexStyle(1,DRAW_LINE);
SetIndexDrawBegin(1,TRIXSignal);
SetIndexBuffer(1,Signal_Buffer);


//---- name for DataWindow and indicator subwindow label
IndicatorShortName("TRIX("+TRIXPeriod+","+TRIXSignal+")");
SetIndexLabel(0,"Trix");
SetIndexLabel(1,"Signal");

//----
return(0);
}
//+------------------------------------------------------------------+
//| Custor indicator deinitialization function |
//+------------------------------------------------------------------+
int deinit()
{
//---- 

//----
return(0);
}
//+------------------------------------------------------------------+
//| Custom indicator iteration function |
//+------------------------------------------------------------------+
int start()
{
int i,limit;
int counted_bars=IndicatorCounted();

//---- check for possible errors
if(counted_bars<0) return(-1);

if(Bars<=TRIXPeriod) return(0);
//---- initial zero
if(counted_bars<1)
{
for(i=1;i<=TRIXPeriod;i++) TRIX_Buffer[Bars-i]=0.0;
for(i=1;i<=TRIXPeriod;i++) Signal_Buffer[Bars-i]=0.0;
for(i=1;i<=TRIXPeriod;i++) EMA1_buffer[Bars-i]=0.0;
for(i=1;i<=TRIXPeriod;i++) EMA2_buffer[Bars-i]=0.0;
for(i=1;i<=TRIXPeriod;i++) EMA3_buffer[Bars-i]=0.0;
}

if(counted_bars>0) counted_bars--;
limit=Bars-counted_bars;

for(i=0; i<limit; i++)
EMA1_buffer[i]=iMA(NULL,0,TRIXPeriod,0,MODE_EMA,PRICE_CLOSE,i);
for(i=0; i<limit; i++)
EMA2_buffer[i]=iMAOnArray(EMA1_buffer,Bars,TRIXPeriod,0,MODE_EMA,i);
for(i=0; i<limit; i++)
EMA3_buffer[i]=iMAOnArray(EMA2_buffer,Bars,TRIXPeriod,0,MODE_EMA,i);

for(i=0; i<limit-1; i++)
   {
   TRIX_Buffer[i] = (EMA3_buffer[i] - EMA3_buffer[i+1]) / EMA3_buffer[i+1] *100;
   }

for(i=0; i<limit-1; i++)
   {
   Signal_Buffer[i]=iMAOnArray(TRIX_Buffer,Bars,TRIXSignal,0,MODE_SMA,i);
   }


Print(Crossed (TRIX_Buffer[0],Signal_Buffer[0]));



//---- done
return(0);
}


bool Crossed (double line1 , double line2 )
{

static string last_direction = "";
string current_dirction = "";

if(line1>line2)current_dirction = "up";
if(line1<=line2)current_dirction = "down";



if(current_dirction != last_direction) 
{
      if (Sound)
      {
         Alert("TRIX Cross for "+Symbol()+" on the "+Period()+" minute chart.");
      }
      if (Email)
      {
         SendMail ("TRIX Alert","Check TRIX for "+Symbol()+" on the "+Period()+" minute chart.");
      }
      last_direction = current_dirction;
      return (true);
}
else
{
      return (false);

}
 
} 


//+------------------------------------------------------------------+