//+------------------------------------------------------------------+
//|                                                       Impuls.mq4 |
//|                                              Copyright 2019, AM2 |
//|                                      http://www.forexsystems.biz |
//+------------------------------------------------------------------+
#property copyright "Copyright 2019, AM2"
#property link      "http://www.forexsystems.biz"
#property version   "1.00"
#property strict
#property indicator_chart_window

#property indicator_buffers 2
#property indicator_color1 Blue
#property indicator_width1 4
#property indicator_color2 Red
#property indicator_width2 4 

double up[];
double dn[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int OnInit()
  {
//--- indicator buffers mapping
   SetIndexStyle(0,DRAW_LINE);
   SetIndexStyle(1,DRAW_LINE);
   SetIndexBuffer(0,up);
   SetIndexBuffer(1,dn);
   Comment("");
//---
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+
//| 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[])
  {
//---
   for(int i=0;i<1111;i++)
     {
      if(close[i]>close[i+1]) up[i]=high[i];
      if(close[i]<close[i+1]) dn[i]=low[i];
     }
//--- 
   return(rates_total);
  }
//+------------------------------------------------------------------+