PsyIndicator

//+------------------------------------------------------------------+
//|                                                 PsyIndicator.mq5 |
//|                     Copyright © 2007, Bruce Hellstrom (brucehvn) | 
//|                                              bhweb@speakeasy.net | 
//+------------------------------------------------------------------+
//---- author of the indicator
#property copyright "Copyright © 2007, Bruce Hellstrom (brucehvn)"
//---- link to the website of the author
#property link "bhweb@speakeasy.net"
//---- indicator version number
#property version   "1.00"
//---- drawing indicator in a separate window
#property indicator_separate_window
//---- two buffers are used for the indicator calculation and drawing
#property indicator_buffers 2
//---- one plot is used
#property indicator_plots   1
//+----------------------------------------------+ 
//|  declaring constants                         |
//+----------------------------------------------+ 
#define RESET 0 // The constant for returning the indicator recalculation command to the terminal
//+----------------------------------------------+
//|  Filling drawing parameters                  |
//+----------------------------------------------+
//---- drawing indicator as a filling between two lines
#property indicator_type1   DRAW_FILLING
//---- green and pink colors are used as the indicator filling colors
#property indicator_color1  clrDodgerBlue,clrDeepPink
//---- displaying the indicator label
#property indicator_label1 "PsyIndicator"
//+----------------------------------------------+
//|  declaration of enumerations                 |
//+----------------------------------------------+
enum Applied_price_ //Type of constant
  {
   PRICE_CLOSE_ = 1,     //Close
   PRICE_OPEN_,          //Open
   PRICE_HIGH_,          //High
   PRICE_LOW_,           //Low
   PRICE_MEDIAN_,        //Median Price (HL/2)
   PRICE_TYPICAL_,       //Typical Price (HLC/3)
   PRICE_WEIGHTED_,      //Weighted Close (HLCC/4)
   PRICE_SIMPL_,         //Simpl Price (OC/2)
   PRICE_QUARTER_,       //Quarted Price (HLOC/4) 
   PRICE_TRENDFOLLOW0_,  //TrendFollow_1 Price 
   PRICE_TRENDFOLLOW1_,  //TrendFollow_2 Price
   PRICE_DEMARK_,        //Demark Price
   PRICE_NAVEL_          //Navel Price
  };
//+----------------------------------------------+
//|  declaration of enumeration                  |
//+----------------------------------------------+  
enum WIDTH
  {
   Width_1=1, //1
   Width_2,   //2
   Width_3,   //3
   Width_4,   //4
   Width_5    //5
  };
//+----------------------------------------------+
//|  declaration of enumeration                  |
//+----------------------------------------------+
enum STYLE
  {
   SOLID_,//Solid line
   DASH_,//Dashed line
   DOT_,//Dotted line
   DASHDOT_,//Dot-dash line
   DASHDOTDOT_   //Dot-dash line with double dots
  };
//+----------------------------------------------+
//| Indicator input parameters                   |
//+----------------------------------------------+
input uint PsyPeriod=25; // indicator period
input Applied_price_ IPC=PRICE_CLOSE_;//price constant
//----                          
input uint UpLevel=60; // overbought level in %%
input uint DnLevel=40; // oversold level in %%
input color UpLevelsColor=clrBlue; //color of the overbought level
input color DnLevelsColor=clrBlue; //color of the oversold level
input STYLE Levelstyle=DASH_;   //levels style
input WIDTH  LevelsWidth=Width_1;  //levels width                       
//+----------------------------------------------+

//---- declaration of dynamic arrays that will further be 
// used as indicator buffers
double BullsBuffer[];
double BearsBuffer[];
//---- Declaration of integer variables of data starting point
int min_rates_total;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+  
void OnInit()
  {
//---- Initialization of variables of data calculation starting point
   min_rates_total=int(PsyPeriod);

//---- transformation of the dynamic array BullsBuffer into an indicator buffer
   SetIndexBuffer(0,BullsBuffer,INDICATOR_DATA);
//---- shifting the starting point for drawing indicator 1 by min_rates_total
   PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,min_rates_total);
//---- indexing elements in the buffer as in timeseries
   ArraySetAsSeries(BullsBuffer,true);

//---- transformation of the BearsBuffer dynamic array into an indicator buffer
   SetIndexBuffer(1,BearsBuffer,INDICATOR_DATA);
//---- shifting the starting point for drawing indicator 2 by min_rates_total
   PlotIndexSetInteger(1,PLOT_DRAW_BEGIN,min_rates_total);
//---- indexing elements in the buffer as in timeseries
   ArraySetAsSeries(BearsBuffer,true);

//---- initializations of variable for indicator short name
   string shortname="PsyIndicator";
//--- 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,2);

//---- lines drawing parameters  
   IndicatorSetInteger(INDICATOR_LEVELS,2);

   IndicatorSetDouble(INDICATOR_LEVELVALUE,0,UpLevel);
   IndicatorSetInteger(INDICATOR_LEVELCOLOR,0,UpLevelsColor);
   IndicatorSetInteger(INDICATOR_LEVELSTYLE,0,Levelstyle);
   IndicatorSetInteger(INDICATOR_LEVELWIDTH,0,LevelsWidth);

   IndicatorSetDouble(INDICATOR_LEVELVALUE,1,DnLevel);
   IndicatorSetInteger(INDICATOR_LEVELCOLOR,1,DnLevelsColor);
   IndicatorSetInteger(INDICATOR_LEVELSTYLE,1,Levelstyle);
   IndicatorSetInteger(INDICATOR_LEVELWIDTH,1,LevelsWidth);
//----
  }
//+------------------------------------------------------------------+
//| 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 minimums of price for the calculation of indicator
                const double &close[],
                const long &tick_volume[],
                const long &volume[],
                const int &spread[]
                )
  {
//---- checking for the sufficiency of the number of bars for the calculation
   if(rates_total<min_rates_total) return(RESET);

//---- declaration of local variables 
   int limit,bar;
   double upsch,dnsch;

//---- calculation of the starting number limit for the bar recalculation loop
   if(prev_calculated>rates_total || prev_calculated<=0)// checking for the first start of the indicator calculation
      limit=rates_total-min_rates_total-1; // starting number for calculation of all bars
   else limit=rates_total-prev_calculated; // starting number for the calculation of new bars

//---- indexing elements in arrays as in timeseries  
   ArraySetAsSeries(open,true);
   ArraySetAsSeries(high,true);
   ArraySetAsSeries(low,true);
   ArraySetAsSeries(close,true);

//---- main cycle of calculation of the indicator
   for(bar=limit; bar>=0 && !IsStopped(); bar--)
     {

      upsch=0;
      dnsch=0;
      for(int iii=int(PsyPeriod-1); iii>=0 && !IsStopped(); iii--)
        {
         if(PriceSeries(IPC,bar+iii,open,low,high,close)>PriceSeries(IPC,bar+iii+1,open,low,high,close)) upsch++;
         else                                                                                            dnsch++;
        }

      BullsBuffer[bar]=100*upsch/PsyPeriod;
      BearsBuffer[bar]=100*dnsch/PsyPeriod;
     }
//----     
   return(rates_total);
  }
//+------------------------------------------------------------------+   
//| Getting values of a price time series                            |
//+------------------------------------------------------------------+ 
double PriceSeries
(
 uint applied_price,// Price constant
 uint   bar,// Shift index relative to the current bar by a specified number of periods backward or forward).
 const double &Open[],
 const double &Low[],
 const double &High[],
 const double &Close[]
 )
//PriceSeries(applied_price, bar, open, low, high, close)
//+ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -+
  {
//----
   switch(applied_price)
     {
      //---- Price constants from the ENUM_APPLIED_PRICE enumeration
      case  PRICE_CLOSE: return(Close[bar]);
      case  PRICE_OPEN: return(Open [bar]);
      case  PRICE_HIGH: return(High [bar]);
      case  PRICE_LOW: return(Low[bar]);
      case  PRICE_MEDIAN: return((High[bar]+Low[bar])/2.0);
      case  PRICE_TYPICAL: return((Close[bar]+High[bar]+Low[bar])/3.0);
      case  PRICE_WEIGHTED: return((2*Close[bar]+High[bar]+Low[bar])/4.0);

      //----                            
      case  8: return((Open[bar] + Close[bar])/2.0);
      case  9: return((Open[bar] + Close[bar] + High[bar] + Low[bar])/4.0);
      //----                                
      case 10:
        {
         if(Close[bar]>Open[bar])return(High[bar]);
         else
           {
            if(Close[bar]<Open[bar])
               return(Low[bar]);
            else return(Close[bar]);
           }
        }
      //----         
      case 11:
        {
         if(Close[bar]>Open[bar])return((High[bar]+Close[bar])/2.0);
         else
           {
            if(Close[bar]<Open[bar])
               return((Low[bar]+Close[bar])/2.0);
            else return(Close[bar]);
           }
         break;
        }
      //----         
      case 12:
        {
         double res=High[bar]+Low[bar]+Close[bar];

         if(Close[bar]<Open[bar]) res=(res+Low[bar])/2;
         if(Close[bar]>Open[bar]) res=(res+High[bar])/2;
         if(Close[bar]==Open[bar]) res=(res+Close[bar])/2;
         return(((res-Low[bar])+(res-High[bar]))/2);
        }
      //----
      default: return(Close[bar]);
     }
//----
//return(0);
  }
//+------------------------------------------------------------------+