MomemtInTime

//+------------------------------------------------------------------+
//|                                                 MomemtInTime.mq5 |
//|                                         Copyright © 2010, LeMan. |
//|                                                 b-market@mail.ru |
//+------------------------------------------------------------------+
//---- author of the indicator
#property copyright "Copyright © 2010, LeMan."
#property link      "b-market@mail.ru"
//---- indicator version number
#property version   "1.00"
//---- drawing indicator in a separate window
#property indicator_separate_window
//----two buffers are used for calculation of drawing of the indicator
#property indicator_buffers 2
//---- two plots are used
#property indicator_plots   2
//+----------------------------------------------+
//|  CG indicator drawing parameters             |
//+----------------------------------------------+
//---- drawing indicator 1 as a line
#property indicator_type1   DRAW_LINE
//---- red color is used as the color of the bullish line of the indicator
#property indicator_color1  Red
//---- line of the indicator 1 is a continuous curve
#property indicator_style1  STYLE_SOLID
//---- thickness of line of the indicator 1 is equal to 1
#property indicator_width1  1
//---- displaying of the bullish label of the indicator
#property indicator_label1  "MomemtInTime Oscillator"
//+----------------------------------------------+
//|  Trigger indicator drawing parameters        |
//+----------------------------------------------+
//---- drawing the indicator 2 as a label
#property indicator_type2   DRAW_ARROW
//---- light green color is used as the color of the indicator line
#property indicator_color2  Lime
//---- indicator 2 width is equal to 1
#property indicator_width2  1
//---- displaying of the bearish label of the indicator
#property indicator_label2  "MomemtInTime"
//+----------------------------------------------+
//|  Indicator input parameters                  |
//+----------------------------------------------+
input string tm="00:00";// time in the format hours:minutes
input int Shift=0; // horizontal shift of the indicator in bars 
//+----------------------------------------------+
//---- declaration of dynamic arrays that further 
//---- will be used as indicator buffers
double OscBuffer[];
double MomBuffer[];
//---- declaration of the integer variables for the start of data calculation
int min_rates_total;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+  
void OnInit()
  {
//---- Initialization of variables of the start of data calculation
   min_rates_total=2;

//---- set dynamic array as an indicator buffer
   SetIndexBuffer(0,OscBuffer,INDICATOR_DATA);
//---- shifting the indicator 1 horizontally by Shift
   PlotIndexSetInteger(0,PLOT_SHIFT,Shift);
//---- shifting the start of drawing of the indicator 1
   PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,min_rates_total);
//---- setting the indicator values that won't be visible on a chart
   PlotIndexSetDouble(0,PLOT_EMPTY_VALUE,EMPTY_VALUE);

//---- set dynamic array as an indicator buffer
   SetIndexBuffer(1,MomBuffer,INDICATOR_DATA);
//---- shifting the indicator 2 horizontally by Shift
   PlotIndexSetInteger(1,PLOT_SHIFT,Shift);
//---- shifting the beginning of drawing of the indicator 2
   PlotIndexSetInteger(1,PLOT_DRAW_BEGIN,min_rates_total);
//---- setting the indicator values that won't be visible on a chart
   PlotIndexSetDouble(1,PLOT_EMPTY_VALUE,EMPTY_VALUE);
//---- indicator symbol
   PlotIndexSetInteger(1,PLOT_ARROW,108);

//---- initializations of variable for indicator short name
   string shortname;
   StringConcatenate(shortname,"MomemtInTime(",tm,", ",Shift,")");
//--- creation of the name to be displayed in a separate sub-window and in a pop up help
   IndicatorSetString(INDICATOR_SHORTNAME,shortname);
//---- determination of accuracy of displaying the indicator values
   IndicatorSetInteger(INDICATOR_DIGITS,_Digits);
//----
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int OnCalculate(
                const int rates_total,    // amount of history in bars at the current tick
                const int prev_calculated,// amount of history in bars at the previous tick
                const datetime &time[],
                const double &open[],
                const double& high[],     // price array of maximums of price for the calculation of indicator
                const double& low[],      // price array of price lows for the indicator calculation
                const double &close[],
                const long &tick_volume[],
                const long &volume[],
                const int &spread[]
                )
  {
//---- checking the number of bars to be enough for calculation
   if(rates_total<min_rates_total) return(0);

//---- declaration of local variables 
   int first,bar;
   static double Open=0.0;
   
//---- calculation of the starting number 'first' for the cycle of recalculation of bars
   if(prev_calculated>rates_total || prev_calculated<=0) // checking for the first start of calculation of an indicator
     {
      first=min_rates_total; // starting index for calculation of all bars
     }
   else first=prev_calculated-1; // starting number for calculation of new bars

//---- main cycle of calculation of the indicator
   for(bar=first; bar<rates_total && !IsStopped(); bar++)
     {
      MomBuffer[bar]=EMPTY_VALUE;

      if(TimeToString(time[bar],TIME_MINUTES)==tm)
        {
         Open=open[bar];
         MomBuffer[bar]=0.0;
        }

      OscBuffer[bar]=NormalizeDouble(close[bar]-Open,_Digits);
     }
//----     
   return(rates_total);
  }
//+------------------------------------------------------------------+