//+------------------------------------------------------------------+
//| test.mq4                                                         |
//+------------------------------------------------------------------+
#property copyright "Ron T"
#property link      "http://www.lightpatch.com"

#property indicator_chart_window
#property indicator_buffers 4
#property indicator_color1 White
#property indicator_color2 Red
#property indicator_color3 Red
#property indicator_color4 White

//---- buffers
double ExtMapBuffer1[];
double ExtMapBuffer2[];
double ExtMapBuffer3[];
double ExtMapBuffer4[];

// User Input
extern double Gap_Size=0.0030;


//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//|------------------------------------------------------------------|

int init()
  {

   SetIndexStyle(0,DRAW_ARROW);
   SetIndexBuffer(0, ExtMapBuffer1);
   SetIndexArrow(0,233); //up red
   
   SetIndexStyle(1,DRAW_ARROW);
   SetIndexBuffer(1, ExtMapBuffer2);
   SetIndexArrow(1,234); //down white

   SetIndexStyle(2,DRAW_ARROW);
   SetIndexBuffer(2, ExtMapBuffer3);
   SetIndexArrow(2,168);  // Red

   SetIndexStyle(3,DRAW_ARROW);
   SetIndexBuffer(3, ExtMapBuffer4);
   SetIndexArrow(3,168);  // White

   return(0);
  }


//+------------------------------------------------------------------+
//| Custor indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
   int i;
   
   for( i=0; i<Bars; i++ ) ExtMapBuffer1[i]=0;
   for( i=0; i<Bars; i++ ) ExtMapBuffer2[i]=0;
   for( i=0; i<Bars; i++ ) ExtMapBuffer3[i]=0;
   for( i=0; i<Bars; i++ ) ExtMapBuffer4[i]=0;

   return(0);
  }


//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
  {
   double oTYP0=0, oTYP1=0, oTYP2=0, oTYP3=0, oTYP4=0, oTYP5=0;

   int pos=Bars;
      
   while(pos>=0)
     {


      oTYP0=(High[pos+0]+Low[pos+0]+Close[pos+0]+Close[pos+0])/4;
      oTYP1=(High[pos+1]+Low[pos+1]+Close[pos+1]+Close[pos+1])/4;
      oTYP2=(High[pos+2]+Low[pos+2]+Close[pos+2]+Close[pos+2])/4;

      // down trend
      if(oTYP2 > oTYP1 && oTYP1 > oTYP0)
        {
         ExtMapBuffer1[pos]=0;
         ExtMapBuffer2[pos]=oTYP0-0.0010;  //down red
        }
      
      // up trend
      if(oTYP2 < oTYP1 && oTYP1 < oTYP0)
        {
         ExtMapBuffer1[pos]=oTYP0+0.0010;  //up white
         ExtMapBuffer2[pos]=0;
        }
 	   pos--;
     }

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