RollerCoaster

//+------------------------------------------------------------------+
//|                                                RollerCoaster.mq4 |
//|                                         Copyright © 2008, Vishal |
//|                                                                  |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2008, Vishal"
#property link      ""

#property indicator_chart_window
#property indicator_buffers 3
#property indicator_color1 Silver
#property indicator_color2 DodgerBlue
#property indicator_color3 Crimson

//---- input parameters
extern int       MAperiod=21;
extern string    Note_MAmethod="0=sma 1=ema 2=smma 3=lwma";
extern int       MAmethod=0;

//---- buffers
double ExtMapBuffer1[];
double ExtMapBuffer2[];
double ExtMapBuffer3[];

//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicators

   SetIndexStyle(0,DRAW_LINE);
   SetIndexBuffer(0,ExtMapBuffer1);
   SetIndexStyle(1,DRAW_LINE,STYLE_DOT);
   SetIndexBuffer(1,ExtMapBuffer2);
   SetIndexStyle(2,DRAW_LINE,STYLE_DOT);
   SetIndexBuffer(2,ExtMapBuffer3);
   

//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
//----
   
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
  {
   int    counted_bars=IndicatorCounted();
          counted_bars--;

   int    i, startbar, hh, ll;
   double mavrg;

          startbar = Bars - counted_bars - MAperiod;

          for (i=startbar; i>=0; i--)
          {
            mavrg = iMA(NULL,0,MAperiod,0,MAmethod,PRICE_CLOSE,i);
            ExtMapBuffer1[i] = mavrg;

            if (High[i+2]==High[iHighest(NULL,0,MODE_HIGH,5,i)])
            {
              for (int j=i+2;j>=i;j--)              
              ExtMapBuffer2[j]=High[i+2];
            } else ExtMapBuffer2[i] = ExtMapBuffer2[i+1]; 

            if (Low[i+2]==Low[iLowest(NULL,0,MODE_LOW,5,i)])
            {
              for (int k=i+2;k>=i;k--)              
              ExtMapBuffer3[k]=Low[i+2];
            } else ExtMapBuffer3[i] = ExtMapBuffer3[i+1]; 
 
          }

   
//----
   return(0);
  }
//+------------------------------------------------------------------+