//+------------------------------------------------------------------+
//|  TZ-Breaktout.mq4                                                |
//|  Shimodax                                                        |
//|                                                                  |
//+------------------------------------------------------------------+
#property copyright "Copyright Shimodax"
#property link      "http://www.strategybuilderfx.com/forums/showthread.php?t=15439"
/* 
   Introduction:

   Draw ranges for "Simple Combined Breakout System for EUR/USD and GBP/USD" thread
   (see http://www.strategybuilderfx.com/forums/showthread.php?t=15439)

   LocalTimeZone: TimeZone for which MT4 shows your local time, 
                  e.g. 1 or 2 for Europe (GMT+1 or GMT+2 (daylight 
                  savings time).  Use zero for no adjustment.
                  
                  The MetaQuotes demo server uses GMT +2.   
   Enjoy  :-)
   Markus
*/
#property indicator_chart_window
#property indicator_buffers 5
#property indicator_color1 clrRed
#property indicator_color2 clrRed
#property indicator_color3 clrLightGray
#property indicator_color4 clrLightGray
#property indicator_color5 clrBlue
//----
extern int LocalTimeZone= 2;
extern int DestTimeZone= 6;
extern int PipsForEntry= 5;
//----
double Zone1Upper[];
double Zone2Upper[];
double Zone1Lower[];
double Zone2Lower[];
double SignalsBuffer[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
   SetIndexStyle(0,DRAW_LINE);
   SetIndexBuffer(0,Zone1Upper);
   SetIndexEmptyValue(0, 0.0);
   SetIndexStyle(1,DRAW_LINE);
   SetIndexBuffer(1,Zone1Lower);
   SetIndexEmptyValue(1, 0.0);
   SetIndexStyle(2,DRAW_NONE);
   SetIndexBuffer(2,Zone2Upper);
   SetIndexEmptyValue(2, 0.0);
   SetIndexStyle(3,DRAW_NONE);
   SetIndexBuffer(3,Zone2Lower);
   SetIndexEmptyValue(3, 0.0);
   SetIndexStyle(4,DRAW_ARROW);
   SetIndexArrow(4, 156);
   SetIndexBuffer(4, SignalsBuffer);
   return(0);
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
int deinit()
  {
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
  {
   int counted_bars= IndicatorCounted(),
   lastbar;
//----
   if (Bars<=100)
      return(0);
   if (counted_bars>0)
      counted_bars--;
//----
   lastbar= Bars - counted_bars;
   if(counted_bars==0) lastbar--;
//----
   BreakoutRanges(0, lastbar, LocalTimeZone, DestTimeZone);
   return(0);
  }
//+------------------------------------------------------------------+
//| Compute index of first/last bar of yesterday and today           |
//+------------------------------------------------------------------+
int BreakoutRanges(int offset, int lastbar, int tzlocal, int tzdest)
  {
   int i, j, k,
   tzdiff= tzlocal - tzdest,
   tzdiffsec= tzdiff*3600,
   tidxstart[2]= { 0, 0},
   tidxend[2]= { 0, 0 };
   double thigh[2]= { 0.0, 0.0 },
   tlow[2]= { 99999.9, 99999.9 };
   string tfrom[3]= { "04:00", "08:00" ,  /*rest of day: */ "12:00"},
          tto[3]=   { "08:00", "12:00",   /*rest of day: */ "24:00" },
   tday;
   bool inperiod= -1;
   datetime timet;
   // search back for the beginning of the day
   tday= TimeToStr(Time[lastbar]-tzdiffsec, TIME_DATE);
     for( ;lastbar<Bars; lastbar++) 
     {
        if (TimeToStr(Time[lastbar] - tzdiffsec, TIME_DATE)!=tday) 
        {
         lastbar--;
         break;
        }
     }
     
   // find the high/low for the two periods and carry them forward through the day
   tday= "XXX";
     for(i= lastbar-1; i>=offset; i--) 
     {
      timet= Time[i] - tzdiffsec;   // time of this bar
//----
      string timestr= TimeToStr(timet, TIME_MINUTES),    // current time HH:MM
      thisday= TimeToStr(timet, TIME_DATE);       // current date
      // for all three periods (first period, second period, rest of day)
        for(j= 0; j<2; j++) 
        {
           if (tfrom[j]<=timestr && timestr<tto[j]) 
           {   // Bar[i] in this period
              if (inperiod!=j) 
              { // entered new period, so last one is completed
                 if (j>0) 
                 {      // now draw high/low back over the recently completed period
                    for(k= tidxstart[j-1]; k>=tidxend[j-1]; k--) 
                    {
                       if (j-1==0) 
                       {
                        Zone1Upper[k]= thigh[j-1];
                        Zone1Lower[k]= tlow[j-1];
                       }
                       if (j-1==1) 
                       {
                        Zone2Upper[k]= thigh[j-1];
                        Zone2Lower[k]= tlow[j-1];
                       }
                    }
                 }
               inperiod= j;   // remember current period
              }
            if (inperiod==2)   // inperiod==2 (end of day) is just to check completion of zone 2
               break;
            // for the current period find idxstart, idxend and compute high/low
              if (tidxstart[j]==0) 
              {
               tidxstart[j]= i;
               tday= thisday;
              }
            tidxend[j]= i;
//----
            thigh[j]= MathMax(thigh[j], High[i]);
            tlow[j]= MathMin(tlow[j], Low[i]);
           }
        }
      // carry forward the periods for which we have definite high/lows
        if (inperiod>=1 && tday==thisday) 
        { // first time period completed
         Zone1Upper[i]= thigh[0] + PipsForEntry*Point;
         Zone1Lower[i]= tlow[0] - PipsForEntry*Point;
//----
           if (inperiod>=2) 
           {   // second period completed
            Zone2Upper[i]= thigh[1] + PipsForEntry*Point;
            Zone2Lower[i]= tlow[1] - PipsForEntry*Point;
           }
        }
        else 
        {   // none yet to carry forward (zero to clear old values, e.g. from switching timeframe)
         Zone1Upper[i]= 0;
         Zone1Lower[i]= 0;
         Zone2Upper[i]= 0;
         Zone2Lower[i]= 0;
        }
      // at the beginning of a new day reset everything
        if (tday!="XXX" && tday!=thisday) 
        {
         Print("#", i, "new day ", thisday, "/", tday);
//----
         tday= "XXX";
//----
         inperiod= -1;
//----
           for(j= 0; j<2; j++) 
           {
            tidxstart[j]= 0;
            tidxend[j]= 0;
            thigh[j]= 0;
            tlow[j]= 99999;
           }
        }
     }
   return(0);
  }
//+------------------------------------------------------------------+