//+------------------------------------------------------------------+
//|                                                  StepMA_v6.4.mq5 |
//|                                Copyright © 2006, TrendLaboratory |
//|            http://finance.groups.yahoo.com/group/TrendLaboratory |
//|                                       E-mail: igorad2004@list.ru |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2006, TrendLaboratory"
#property link      "http://finance.groups.yahoo.com/group/TrendLaboratory"
#property description "Indicator of the pabloski trading system."
//---- indicator version number
#property version   "1.10"
//---- drawing the indicator in the main window
#property indicator_chart_window 
//---- four buffers are used for the indicator calculation and drawing
#property indicator_buffers 4
//---- only four plots are used
#property indicator_plots   4
//+----------------------------------------------+
//|  Indicator drawing parameters                |
//+----------------------------------------------+
//---- drawing indicator 1 as a line
#property indicator_type1   DRAW_LINE
//---- Teal color is used for indicator
#property indicator_color1  clrTeal
//---- indicator 1 width is equal to 1
#property indicator_width1  1
//---- displaying of the bullish label of the indicator
#property indicator_label1  "Lower StepMA"
//+----------------------------------------------+
//|  Indicator drawing parameters                |
//+----------------------------------------------+
//---- drawing the indicator 2 as a line
#property indicator_type2   DRAW_LINE
//---- deep pink color is used for the indicator
#property indicator_color2  clrDeepPink
//---- indicator 2 width is equal to 1
#property indicator_width2  1
//---- displaying of the bearish label of the indicator
#property indicator_label2 "Upper StepMA"
//+----------------------------------------------+
//|  Indicator drawing parameters                |
//+----------------------------------------------+
//---- drawing the indicator 3 as a symbol
#property indicator_type3   DRAW_ARROW
//---- Teal color is used for indicator
#property indicator_color3  clrTeal
//---- indicator 3 width is equal to 4
#property indicator_width3  4
//---- displaying of the bullish label of the indicator
#property indicator_label3  "StepMA Buy"
//+----------------------------------------------+
//|  Indicator drawing parameters                |
//+----------------------------------------------+
//---- drawing the indicator 4 as a symbol
#property indicator_type4   DRAW_ARROW
//---- deep pink color is used for the indicator
#property indicator_color4  clrDeepPink
//---- indicator 4 width is equal to 4
#property indicator_width4  4
//---- displaying of the bearish label of the indicator
#property indicator_label4 "StepMA Sell"
//+-----------------------------------+
//|  Declaration of constants         |
//+-----------------------------------+
#define RESET 0 // The constant for returning the indicator recalculation command to the terminal
//+----------------------------------------------+
//| Indicator input parameters                   |
//+----------------------------------------------+
input uint    Length=10;      // ATR Length
input double  Kv=0.9;         // Sensivity Factor
input uint    StepSize=0;     // Constant Step Size (if need)
input bool    HighLow=false;  // High/Low Mode Switch (more sensitive)
//+----------------------------------------------+
//---- declaration of dynamic arrays that will further be 
// used as indicator buffers
double BuyBuffer[],SellBuffer[];
double UpBuffer[],DnBuffer[];

double dStep;
//---- Declaration of integer variables of data starting point
int  min_rates_total;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
void OnInit()
  {
//---- Initialization of variables    
   min_rates_total=int(Length+1);
   dStep=Kv*StepSize;

//---- set dynamic array as an indicator buffer
   SetIndexBuffer(0,UpBuffer,INDICATOR_DATA);
//---- shifting the start of drawing of the indicator 1
   PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,min_rates_total);
//---- indexing elements in the buffer as time series
   ArraySetAsSeries(UpBuffer,true);
//---- setting the indicator values that won't be visible on a chart
   PlotIndexSetDouble(0,PLOT_EMPTY_VALUE,0);

//---- set dynamic array as an indicator buffer
   SetIndexBuffer(1,DnBuffer,INDICATOR_DATA);
//---- shifting the starting point of the indicator 2 drawing
   PlotIndexSetInteger(1,PLOT_DRAW_BEGIN,min_rates_total);
//---- indexing elements in the buffer as time series
   ArraySetAsSeries(DnBuffer,true);
//---- setting the indicator values that won't be visible on a chart
   PlotIndexSetDouble(1,PLOT_EMPTY_VALUE,0);

//---- set dynamic array as an indicator buffer
   SetIndexBuffer(2,SellBuffer,INDICATOR_DATA);
//---- shifting the starting point of the indicator 3 drawing
   PlotIndexSetInteger(2,PLOT_DRAW_BEGIN,min_rates_total);
//---- indicator symbol
   PlotIndexSetInteger(2,PLOT_ARROW,172);
//---- indexing elements in the buffer as time series
   ArraySetAsSeries(SellBuffer,true);
//---- setting the indicator values that won't be visible on a chart
   PlotIndexSetDouble(2,PLOT_EMPTY_VALUE,0);

//---- set dynamic array as an indicator buffer
   SetIndexBuffer(3,BuyBuffer,INDICATOR_DATA);
//---- shifting the starting point of the indicator 4 drawing
   PlotIndexSetInteger(3,PLOT_DRAW_BEGIN,min_rates_total);
//---- indicator symbol
   PlotIndexSetInteger(3,PLOT_ARROW,172);
//---- indexing elements in the buffer as time series
   ArraySetAsSeries(BuyBuffer,true);
//---- setting the indicator values that won't be visible on a chart
   PlotIndexSetDouble(3,PLOT_EMPTY_VALUE,0);

//---- setting the format of accuracy of displaying the indicator
   IndicatorSetInteger(INDICATOR_DIGITS,_Digits);
//---- name for the data window and the label for sub-windows 
   string short_name="StepMA";
   IndicatorSetString(INDICATOR_SHORTNAME,short_name);
//----   
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int OnCalculate
(const int rates_total,
 const int prev_calculated,
 const datetime &Time[],
 const double &Open[],
 const double &High[],
 const double &Low[],
 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(RESET);

//---- declaration of local variables 
   int limit,trend0,Step;
   double smin0,smax0,ATRmin0=0.0,ATRmax0=0.0,AvgRange,ATR0,xStep,x2Step;
   static double smin1,smax1,ATRmin1,ATRmax1;
   static int trend1;

//---- indexing elements in arrays as timeseries  
   ArraySetAsSeries(Close,true);
   ArraySetAsSeries(High,true);
   ArraySetAsSeries(Low,true);

//---- calculations of the necessary amount of data to be copied and
//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 index for the calculation of all bars
      ATRmax1=-999999999.9;
      ATRmin1=+999999999.9;
      smin1=Close[limit];
      smax1=Close[limit];
      trend1=0;
     }
   else limit=rates_total-prev_calculated; // starting index for the calculation of new bars
//----

//----   

//---- first calculation loop of the indicator
   for(int bar=limit; bar>=0 && !IsStopped(); bar--)
     {
      UpBuffer[bar]=0.0;
      DnBuffer[bar]=0.0;
      trend0=trend1;

      if(!StepSize)
        {
         AvgRange=0;
         for(int iii=0; iii<int(Length); iii++) AvgRange+=(High[bar+iii]-Low[bar+iii]);
         ATR0=AvgRange/Length;

         ATRmax0=MathMax(ATRmax1,ATR0);
         ATRmin0=MathMin(ATRmin1,ATR0);
         Step=int(0.5*Kv*(ATRmax0+ATRmin0)/_Point);
        }
      else Step=int(dStep);

      xStep=Step*_Point;
      x2Step=2.0*xStep;

      if(HighLow)
        {
         smax0=Low[bar]+x2Step;
         smin0=High[bar]-x2Step;
        }
      else
        {
         smax0=Close[bar]+x2Step;
         smin0=Close[bar]-x2Step;
        }

      if(Close[bar]>smax1) trend0=+1;
      if(Close[bar]<smin1) trend0=-1;

      if(trend0>0)
        {
         smin0=MathMax(smin0,smin1);
         UpBuffer[bar]=smin0;
        }
        
      else
        {
         smax0=MathMin(smax0,smax1);
         DnBuffer[bar]=smax0;
        }
        
      if(bar)
        {
         smin1=smin0;
         smax1=smax0;
         ATRmax1=ATRmax0;
         ATRmin1=ATRmin0;
         trend1=trend0;
        }
     }

//---- recalculation of the starting index for calculation of all bars
   if(prev_calculated>rates_total || prev_calculated<=0)// checking for the first start of the indicator calculation     
      limit--;

//---- second calculation loop of the indicator
   for(int bar=limit; bar>=0 && !IsStopped(); bar--)
     {
      //---- zero out the contents of the indicator buffers for the calculation
      BuyBuffer[bar]=0.0;
      SellBuffer[bar]=0.0;

      if(UpBuffer[bar+1]>0.0&&DnBuffer[bar]>0.0) BuyBuffer [bar]=DnBuffer[bar];
      if(DnBuffer[bar+1]>0.0&&UpBuffer[bar]>0.0) SellBuffer[bar]=UpBuffer[bar];
     }
//----     
   return(rates_total);
  }
//+------------------------------------------------------------------+