//+------------------------------------------------------------------+
//|                                                        Bands.mq4 |
//|        // //         Copyright © 2005, MetaQuotes Software Corp. |
//|                                       http://www.metaquotes.net/ |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2005, MetaQuotes Software Corp."
#property link      "http://www.metaquotes.net/"
//+------------------------------------------------------------------+
//|                                                                  |
//|    2008 Speech. Speech.tpl  Rev.2a 2008 ( itemsdepot@hotmail.com)|
//|                                                                  |
//+------------------------------------------------------------------+
#property indicator_chart_window
#property indicator_buffers 3
#property indicator_color1 Gray
#property indicator_color2 OliveDrab
#property indicator_color3 Brown

#property indicator_width1 1
#property indicator_width2 3
#property indicator_width3 3 

////

//---- indicator parameters
extern bool   BBDrawBands=True;
extern int    BandsDrawRange=100;
extern int    BandsShift=0;
extern double BandsDeviations=2.0;
extern bool   BandsAlertBoxOn=False;
extern bool   BandSoundAlertHighOn=True;
extern bool   BandSoundAlertLowOn=True;
extern string WaveBandName="bandup.wav";
extern string WaveBandName2="banddown.wav";
extern double BBAlarmDelay=22;
extern int    BBCandleAlertRange=2;
extern int    BandsMAPeriod=7;
extern int    BBMovingAverage=0;
extern string BBMovingAverageSettings="0-SMA,1-EMA,2-SMMA,3-LWMA";   // simple, exponential, smoothed , linear
extern int    BBAppliedPrice=0;
extern string BBAppliedPriceSettings1="0-Close,1-Open,2-High,3-Low";
extern string BBAppliedPriceSettings2="4-Median,5-Typical,6-Weighted";
extern double BBTime;

//----------------- buffers
double MovingBuffer[];
double UpperBuffer[];
double LowerBuffer[];
double BBBreachLog[];

//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+

int init()
  {
   //---- indicators ------------------------------------------------
   
   IndicatorShortName("Bands R2");

   if (BBDrawBands) SetIndexStyle(0,0,0,indicator_width1,indicator_color1); 
     else SetIndexStyle(0,12,0,indicator_width1,indicator_color1);     
   SetIndexBuffer(0,MovingBuffer);
   SetIndexDrawBegin(0,BandsDrawRange);
   
   if (BBDrawBands) SetIndexStyle(1,0,0,indicator_width2,indicator_color2); 
     else SetIndexStyle(1,12,0,indicator_width2,indicator_color2);        
   SetIndexBuffer(1,UpperBuffer);
   SetIndexDrawBegin(1,BandsDrawRange);
   
   if (BBDrawBands) SetIndexStyle(2,0,0,indicator_width3,indicator_color3); 
     else SetIndexStyle(2,12,0,indicator_width3,indicator_color3);          
   SetIndexBuffer(2,LowerBuffer);
   SetIndexDrawBegin(2,BandsDrawRange);   
    
   BBTime=TimeLocal(); 
   return(0);
  }
  
  
//+------------------------------------------------------------------+
//| Bollinger Bands                                                  |
//+------------------------------------------------------------------+
int start()
  {
  
   int    i,k;
   bool   BBSpeak=False;
   double deviation;
   double sum,oldval,newres;
   double BBFinishTime=TimeCurrent();
   
   //----
   if(Bars<=BandsDrawRange) return(0);
   

   //------------------------------------------------------------ Draw
   
   
   for(i=BandsDrawRange; i>=0; i--) 
   {
   
      if (BBMovingAverage>3 && BBMovingAverage<0) BBMovingAverage=0;
      if (BBAppliedPrice>6 && BBAppliedPrice<6 ) BBAppliedPrice=0;
   
      MovingBuffer[i]=iMA(NULL,0,BandsMAPeriod,BandsShift,BBMovingAverage,BBAppliedPrice,i);                   
          
      //---------------------
      sum=0.0;
      k=i+BandsMAPeriod-1;
      oldval=MovingBuffer[i];
      
      while(k>=i)
      {
        newres=Close[k]-oldval;
        sum+=newres*newres;
        k--;
      }   
      deviation=BandsDeviations*MathSqrt(sum/BandsMAPeriod);     
      if (oldval>0) UpperBuffer[i]=oldval+deviation;
      if (oldval>0) LowerBuffer[i]=oldval-deviation;                
         
                   
     } // ----------------------------------------- End Draw
     
     
     
     
     //-------------------------------------------- Start Speak
    
     BBSpeak=False;
     BBFinishTime=TimeLocal(); 
                                                   
     if ((BBFinishTime - BBTime) >= BBAlarmDelay )    // && pos==0)
       {       
           BBFinishTime=TimeLocal();
           BBTime=TimeLocal();
           BBSpeak=True;
           
       }        
   
     while (BBSpeak==True)
     {
        for(i=0; i<=BBCandleAlertRange; i++) 
        { 
          //--------------------------
          if (High[i] > UpperBuffer[i])
          { 
            if (BandsAlertBoxOn==True) Alert("Bands R2: Candle:"+i+" High Band Cross: "+High[i]);
            if (BandSoundAlertHighOn==True) PlaySound(WaveBandName);
            BBSpeak=False;
          }
          
          if (Low[i] < LowerBuffer[i])
          { 
            if (BandsAlertBoxOn==True) Alert("Bands R2: Candle:"+i+" Low Band Cross: "+Low[i]);
            if (BandSoundAlertLowOn==True) PlaySound(WaveBandName2);
            BBSpeak=False;
          }
       if (i >= BBCandleAlertRange) BBSpeak=False;
       }           
     }    
     
     //--------------------------------------------- End Speak
 
    
   return(0);
  }
//+------------------------------------------------- End initStart()