//+------------------------------------------------------------------+ 
//|   Qualitative Quantitative Estimation Indicator with Alerts      |
//|                                   Copyright © 2006 Roman Ignatov |
//|                                  mailto:roman.ignatov@gmail.com  | 
//|                                                                  |
//| V1.   Completed by Roman Ignatov 2006 (roman.ignatov@gmail.com)  |
//| V2.   Completed by Tim Hyder 2008                                |
//|               a)   Complete Code rewrite                         |
//|               b)   Added Audio, Visual and eMail alerts          | 
//|                                                                  |
//|   Copyright © 2008, Tim Hyder aka Hiachiever                     |
//|                                                                  |
//|   PO BOX 768, Hillarys, Western Australia, Australia, 6923       |
//|                                                                  |
//|   GIFTS AND DONATIONS ACCEPTED                                   | 
//|   All my indicators should be considered donationware. That is   |
//|   you are free to use them for your personal use, and are        |
//|   under no obligation to pay for them. However, if you do find   |
//|   this or any of my other indicators help you with your trading  |
//|   then any Gift or Donation as a show of appreciation is         |
//|   gratefully accepted.                                           |
//|                                                                  |
//|   Gifts or Donations also keep me motivated in producing more    |
//|   great free indicators. :-)                                     |
//|                                                                  |
//|   PayPal - hiachiever@gmail.com                                  |  
//+------------------------------------------------------------------+ 
#property copyright "Copyright © 2008 Tim Hyder"
#property link      "mailto:hiachiever@gmail.com"
//----
#define vers    "09.Feb.2008"
#define major   1
#define minor   0
//----
#property indicator_separate_window
#property indicator_buffers 2
#property indicator_color1 DodgerBlue
#property indicator_style1 STYLE_SOLID
#property indicator_width1 2
#property indicator_color2 Yellow
#property indicator_style2 STYLE_DOT
#property indicator_level1 50
#property indicator_levelcolor Aqua
#property indicator_levelstyle STYLE_DOT
//----
extern string NOTESETTINGS=" --- INDICATOR SETTINGS ---";
extern int SF=5;
extern string NOTEALERTS=" --- Alerts ---";
extern int AlertLevel=50;
extern bool MsgAlerts=true;
extern bool SoundAlerts=true;
extern string SoundAlertFile="alert.wav";
extern bool eMailAlerts=false;
//----
int RSI_Period=14;
int Wilders_Period;
int StartBar, LastAlertBar;
datetime LastAlertTime;
double TrLevelSlow[];
double AtrRsi[];
double MaAtrRsi[];
double Rsi[];
double RsiMa[];
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
int init()
  {
   Wilders_Period=RSI_Period * 2 - 1;
   if (Wilders_Period < SF)
      StartBar=SF;
   else
      StartBar=Wilders_Period;
//----
   IndicatorBuffers(6);
   SetIndexBuffer(0, RsiMa);
   SetIndexStyle(0, DRAW_LINE, STYLE_SOLID, 2);
   SetIndexLabel(0, "Value 1");
   SetIndexDrawBegin(0, StartBar);
   SetIndexStyle(1, DRAW_LINE, STYLE_DOT);
   SetIndexBuffer(1, TrLevelSlow);
   SetIndexLabel(1, "Value 2");
   SetIndexDrawBegin(1, StartBar);
   SetIndexBuffer(2, AtrRsi);
   SetIndexBuffer(3, MaAtrRsi);
   SetIndexBuffer(4, Rsi);
   IndicatorShortName(StringConcatenate("QQE(", SF, ")"));
//----
   LastAlertBar=Bars-1;
   return(0);
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
int start()
  {
   int counted, i;
   double rsi0, rsi1, dar, tr, dv;
//----
   if(Bars<=StartBar)
      return(0);
//----      
   counted=IndicatorCounted();
   if(counted < 1)
      for(i=Bars - StartBar; i < Bars; i++)
        {
         TrLevelSlow[i]=0.0;
         AtrRsi[i]=0.0;
         MaAtrRsi[i]=0.0;
         Rsi[i]=0.0;
         RsiMa[i]=0.0;
        }
   counted=Bars - counted - 1;
//----
   for(i=counted; i>=0; i--)
      Rsi[i]=iRSI(NULL, 0, RSI_Period, PRICE_CLOSE, i);
   for(i=counted; i>=0; i--)
     {
      RsiMa[i]=iMAOnArray(Rsi, 0, SF, 0, MODE_EMA, i);
      AtrRsi[i]=MathAbs(RsiMa[i + 1] - RsiMa[i]);
     }
   for(i=counted; i>=0; i--)
      MaAtrRsi[i]=iMAOnArray(AtrRsi, 0, Wilders_Period, 0, MODE_EMA, i);
//----
   i=counted + 1;
   tr=TrLevelSlow[i];
   rsi1=iMAOnArray(Rsi, 0, SF, 0, MODE_EMA, i);
   while(i > 0)
     {
      i--;
      rsi0=iMAOnArray(Rsi, 0, SF, 0, MODE_EMA, i);
      dar=iMAOnArray(MaAtrRsi, 0, Wilders_Period, 0, MODE_EMA, i) * 4.236;
      dv=tr;
      if (rsi0 < tr)
        {
         tr=rsi0 + dar;
         if (rsi1 < dv)
            if (tr > dv)
               tr=dv;
        }
      else if (rsi0 > tr)
           {
            tr=rsi0 - dar;
            if (rsi1 > dv)
               if (tr < dv)
                  tr=dv;
           }
      TrLevelSlow[i]=tr;
      rsi1=rsi0;
     }
   if ((RsiMa[i+1]<AlertLevel && RsiMa[i]>AlertLevel) ||(RsiMa[i+1]>AlertLevel && RsiMa[i]<AlertLevel) )
     {
      string base=Symbol()+ ", TF: " + TF2Str(Period());
      string Subj=base + ", " + AlertLevel + " level Cross Up";
      if (RsiMa[i+1]>AlertLevel && RsiMa[i]<AlertLevel) Subj=base + " " +  AlertLevel + " level Cross Down";
      string Msg=Subj + " @ " + TimeToStr(TimeLocal(),TIME_SECONDS);
      if (Bars>LastAlertBar)
        {
         LastAlertBar=Bars;
         DoAlerts(Msg,Subj);
        }
     }
//----
   return(0);
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void DoAlerts(string msgText,string eMailSub)
  {
   if (MsgAlerts) Alert(msgText);
   if (SoundAlerts)  PlaySound(SoundAlertFile);
   if (eMailAlerts) SendMail(eMailSub, msgText);
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
string TF2Str(int period)
  {
   switch(period)
     {
      case PERIOD_M1: return("M1");
      case PERIOD_M5: return("M5");
      case PERIOD_M15: return("M15");
      case PERIOD_M30: return("M30");
      case PERIOD_H1: return("H1");
      case PERIOD_H4: return("H4");
      case PERIOD_D1: return("D1");
      case PERIOD_W1: return("W1");
      case PERIOD_MN1: return("MN");
     }
   return(Period());
  }
//+------------------------------------------------------------------+