//+------------------------------------------------------------------+
//|                                               Custom BB_MACD.mq4 |
//|                                     Copyright © 2005, adoleh2000 |
//|                                       http://www.metaquotes.net/ |
//+------------------------------------------------------------------+
#property  copyright "Copyright © 2005, adoleh2000"
#property  link      "http://www.metaquotes.net/"

//---- indicator settings
#property  indicator_separate_window
#property  indicator_buffers 4
#property  indicator_color1  Lime    //bbMacd up
#property  indicator_color2  Magenta //bbMacd down
#property  indicator_color3  Blue    //Upperband
#property  indicator_color4  Red     //Lowerband
//---- indicator parameters

extern bool StandDev_EnablePopUps = TRUE;
extern bool StandDev_EnableSoundAlert = TRUE;
extern bool StandDev_EnableEmailAlerts = FALSE;
extern string StandDev_Sound = "alert.wav";

extern bool ZeroLine_EnablePopUps = TRUE;
extern bool ZeroLine_EnableSoundAlert = TRUE;
extern bool ZeroLine_EnableEmailAlerts = FALSE;
extern string ZeroLine_Sound = "alert.wav";
extern int OffsetAlertCandle = 0;
extern int FastLen = 12;
extern int SlowLen = 26;
extern int Length = 10;
extern int barsCount = 400;
extern double StDv = 0.05;
//----
int loopbegin;
int shift;
double zeroline;
//---- indicator buffers
double ExtMapBuffer1[];  // bbMacd
double ExtMapBuffer2[];  // bbMacd
double ExtMapBuffer3[];  // Upperband Line
double ExtMapBuffer4[];  // Lowerband Line
//---- buffers
double bbMacd[];
double Upperband[];
double Lowerband[];
double avg[];
double bbMacdline;
double sDev;
double mean;
double sumSqr;
datetime BarTime = 0;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- 6 additional buffers are used for counting.
   IndicatorBuffers(8);   
//---- drawing settings     
   SetIndexBuffer(0, ExtMapBuffer1); // bbMacd line
   SetIndexStyle(0, DRAW_ARROW);
   SetIndexArrow(0, 108);
   IndicatorDigits(Digits + 1);
//----
   SetIndexBuffer(1, ExtMapBuffer2); // bbMacd line
   SetIndexStyle(1, DRAW_ARROW);
   SetIndexArrow(1, 108);
   IndicatorDigits(Digits + 1);
//---- 
   SetIndexBuffer(2, ExtMapBuffer3); // Upperband line
   SetIndexStyle(2, DRAW_LINE, STYLE_SOLID, 1);
   IndicatorDigits(Digits + 1);
//----   
   SetIndexBuffer(3, ExtMapBuffer4); // Lowerband line
   SetIndexStyle(3, DRAW_LINE, STYLE_SOLID, 1);
   IndicatorDigits(Digits + 1);
//---- 
   SetIndexBuffer(4, bbMacd);
   SetIndexBuffer(5, Upperband);        
   SetIndexBuffer(6, Lowerband);
   SetIndexBuffer(7, avg);
//---- name for DataWindow and indicator subwindow label
   IndicatorShortName("BB MACD(" + FastLen + "," + SlowLen + "," + Length+")");
   SetIndexLabel(0, "bbMacd");
   SetIndexLabel(1, "Upperband");
   SetIndexLabel(2, "Lowerband"); 
//---- Set Zero Level  
   SetLevelValue(0, 0.0000);
   SetLevelStyle(2,0,Red);
   IndicatorShortName("RockyMunda BBMACD");   
//---- initialization done
   return(0);
  }
//+------------------------------------------------------------------+
//| Custor indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom BB_MACD                                                   |
//+------------------------------------------------------------------+
int start()
  {
   int limit;
   int counted_bars = IndicatorCounted();
   if(counted_bars < 0) return(-1);
   if(counted_bars > 0) counted_bars--;
      if (barsCount > 0)
            limit = MathMin(Bars - counted_bars,barsCount);
      else  limit = Bars - counted_bars;
//----
   for(int i = 0; i < limit; i++)
       bbMacd[i] = iMA(NULL, 0, FastLen, 0, MODE_EMA, PRICE_CLOSE, i) - 
                   iMA(NULL, 0, SlowLen, 0, MODE_EMA, PRICE_CLOSE, i);
//----
   for(i = 0; i < limit; i++)
     {
       avg[i] = iMAOnArray(bbMacd, 0, Length, 0, MODE_EMA, i);
       sDev   = iStdDevOnArray(bbMacd, 0, Length, MODE_EMA, 0, i);  
       Upperband[i] = avg[i] + (StDv * sDev);
       Lowerband[i] = avg[i] - (StDv * sDev);
       ExtMapBuffer1[i]=bbMacd[i];     // Uptrend bbMacd
       ExtMapBuffer2[i]=bbMacd[i];     // downtrend bbMacd
       ExtMapBuffer3[i]=Upperband[i];  // Upperband
       ExtMapBuffer4[i]=Lowerband[i];  // Lowerband

       //----
       if(bbMacd[i] > bbMacd[i+1])
           ExtMapBuffer2[i] = EMPTY_VALUE;
       //----
       if(bbMacd[i] < bbMacd[i+1])
           ExtMapBuffer1[i] = EMPTY_VALUE;
     }
     
    if (BarTime < Time[0])
    {
        // we have a new bar opened
        BarTime = Time[0]; // keep the new bar open time
        
        double bbMacd1 = iMA(NULL, 0, FastLen, 0, MODE_EMA, PRICE_CLOSE, 1) - iMA(NULL, 0, SlowLen, 0, MODE_EMA, PRICE_CLOSE, 1+OffsetAlertCandle);
        double bbMacd2 = iMA(NULL, 0, FastLen, 0, MODE_EMA, PRICE_CLOSE, 2) - iMA(NULL, 0, SlowLen, 0, MODE_EMA, PRICE_CLOSE, 2+OffsetAlertCandle);

         // ZeroLine
         if (bbMacd1 > 0 && bbMacd2 < 0)
         {
             if (ZeroLine_EnablePopUps) Alert("bbMacd ("+GetPeriod()+"): ZERO Line BUY Alert for "+Symbol());
             if (ZeroLine_EnableSoundAlert) PlaySound(ZeroLine_Sound);
             if (ZeroLine_EnableEmailAlerts) SendMail("bbMacd Alert", "Zero Line BUY Alert for "+Symbol()+" ("+GetPeriod()+")");
         }
         if (bbMacd1 < 0 && bbMacd2 > 0)
         {
             if (ZeroLine_EnablePopUps) Alert("bbMacd ("+GetPeriod()+"): ZERO Line SELL Alert for "+Symbol());
             if (ZeroLine_EnableSoundAlert) PlaySound(ZeroLine_Sound);
             if (ZeroLine_EnableEmailAlerts) SendMail("bbMacd Alert", "Zero Line SELL Alert for "+Symbol()+" ("+GetPeriod()+")");
         }
      
         // StandDev
         if (bbMacd[1+OffsetAlertCandle] > Upperband[1+OffsetAlertCandle] && bbMacd[2+OffsetAlertCandle] < Upperband[2+OffsetAlertCandle])
         {
             if (StandDev_EnablePopUps) Alert("bbMacd ("+GetPeriod()+"): BAND Line BUY Alert for "+Symbol());
             if (StandDev_EnableSoundAlert) PlaySound(StandDev_Sound);
             if (StandDev_EnableEmailAlerts) SendMail("bbMacd Alert", "BAND Line Cross ... BUY Alert for "+Symbol()+" ("+GetPeriod()+")");
         }
         if (bbMacd[1+OffsetAlertCandle] < Lowerband[1+OffsetAlertCandle] && bbMacd[2+OffsetAlertCandle] > Lowerband[2+OffsetAlertCandle])         
         {
             if (StandDev_EnablePopUps) Alert("bbMacd ("+GetPeriod()+"): BAND Line SELL Alert for "+Symbol());
             if (StandDev_EnableSoundAlert) PlaySound(StandDev_Sound);
             if (StandDev_EnableEmailAlerts) SendMail("bbMacd Alert", "BAND Line Cross ... SELL Alert for "+Symbol()+" ("+GetPeriod()+")");
         }
       
    }
//---- done
   return(0);
  }
  
string GetPeriod()
  {
      if (Period() == 1) return("M1");
      else if (Period() == 5) return("M5");
      else if (Period() == 15) return("M15");
      else if (Period() == 30) return("M30");
      else if (Period() == 60) return("H1");
      else if (Period() == 240) return("H4");
      else if (Period() == 1440) return("D1");
      else if (Period() == 10080) return("W1");
      else return("M1");
  }
//+------------------------------------------------------------------+