Step

// Step.mq4
// Èíäèêàòîð

#property copyright "mandorr@gmail.com"
#property indicator_chart_window
#property indicator_buffers 1
#property indicator_width1 2
#property indicator_style1 0
#property indicator_color1 IndianRed

extern int Step=25;          // Øàã
extern int CountBars=10000;  // Êîëè÷åñòâî îòîáðàæàåìûõ áàðîâ

double buffer[];

void init() {
   IndicatorShortName("Step ("+Step+")");
   IndicatorDigits(Digits);
   SetIndexStyle(0,DRAW_LINE,STYLE_SOLID,2);
   SetIndexBuffer(0,buffer);
   SetIndexLabel(0,"Value");
   SetIndexDrawBegin(0,0);
   }

void start()
   {
   int price=MathRound(Close[CountBars-1]/Point);
   int value=Step*(price/Step);
   for (int i=CountBars-1; i>=0; i--)
      {
      price=MathRound(Close[i]/Point);
      if (price>=value+Step) value=value+Step;
      if (price<=value-Step) value=value-Step;
      buffer[i]=value*Point;
      }
   }