VSA_ TrendDiamonds

//+------------------------------------------------------------------+
//|                                           VSA© TrendDiamonds.mq4 |
//|                                    Copyright © 2008, FOREXflash. |
//|                                        http://www.metaquotes.net |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2008, FOREXflash Software Corp."
#property link      "http://www.metaquotes.net"
//----
#property indicator_chart_window
#property indicator_buffers 4

#property indicator_color1 Black
#property indicator_color2 Red
#property indicator_color3 Lime
#property indicator_color4 White

#property indicator_width1 2
#property indicator_width2 1
#property indicator_width3 1
#property indicator_width4 1

extern int period_ma=5;
extern int method_=MODE_SMMA;
extern int price_=PRICE_CLOSE;
extern double step_psar=0.01;
extern double max_psar=0.3;
extern int period_boll=14;
extern int dev_boll=2;
extern int bolldiff=15;

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

double drawMA,ma0,ma1;
double ca;
double psar;
double boll_upper0,boll_upper1;
double boll_lower0,boll_lower1;
double bollingerdiff0,bollingerdiff1;
int    barsToProcess=500;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicators

   SetIndexStyle(0,DRAW_ARROW);
   SetIndexArrow(0,119);
   SetIndexBuffer(0,ExtMapBuffer4);
   SetIndexEmptyValue(0,EMPTY_VALUE);
   
   SetIndexStyle(1,DRAW_ARROW);
   SetIndexArrow(1,119);
   SetIndexBuffer(1,ExtMapBuffer1);
   SetIndexEmptyValue(1,EMPTY_VALUE);
   
   SetIndexStyle(2,DRAW_ARROW);
   SetIndexArrow(2,119);
   SetIndexBuffer(2,ExtMapBuffer2);
   SetIndexEmptyValue(2,EMPTY_VALUE);
   
   SetIndexStyle(3,DRAW_ARROW);
   SetIndexArrow(3,119);
   SetIndexBuffer(3,ExtMapBuffer3);
   SetIndexEmptyValue(3,EMPTY_VALUE);
   
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
//----
   
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
  {
   int counted_bars=IndicatorCounted(), limit;
   int i=0; 
   if (counted_bars>0)
       counted_bars--;
   
   limit=Bars-counted_bars;
   
   if(limit>barsToProcess)
      limit=barsToProcess;
 
   while (i<limit)
   {
   
   drawMA=iMA(NULL,0,7,0,MODE_SMA,(High[i]-Low[i])/2,i);
   
   
   ma0=iMA(NULL,0,period_ma,0,method_,price_,i);
   ma1=iMA(NULL,0,period_ma,0,method_,price_,i+1);
   psar=iSAR(NULL,0,step_psar,max_psar,i);
   boll_lower0=iBands(NULL,0,period_boll,dev_boll,0,PRICE_CLOSE,MODE_LOWER,i);
   boll_upper0=iBands(NULL,0,period_boll,dev_boll,0,PRICE_CLOSE,MODE_UPPER,i);
   bollingerdiff0=(boll_upper0-boll_lower0)/Point;
   boll_lower1=iBands(NULL,0,period_boll,dev_boll,0,PRICE_CLOSE,MODE_LOWER,i+1);
   boll_upper1=iBands(NULL,0,period_boll,dev_boll,0,PRICE_CLOSE,MODE_UPPER,i+1);
   bollingerdiff1=(boll_upper1-boll_lower1)/Point; 
   
   
   //SELL SIGNAL
   if(ma0<=ma1 && psar>Close[i] && bollingerdiff0>bolldiff && bollingerdiff0>bollingerdiff1)
      ExtMapBuffer1[i]=drawMA;
      ExtMapBuffer4[i]=drawMA;

      
   
   //BUY SIGNAL   
   if(ma0>=ma1 && psar<Close[i] && bollingerdiff0>bolldiff && bollingerdiff0>bollingerdiff1)
      ExtMapBuffer2[i]=drawMA; 
      ExtMapBuffer4[i]=drawMA;  
      
      
   if(ExtMapBuffer1[i]==EMPTY_VALUE && ExtMapBuffer2[i]==EMPTY_VALUE)
      ExtMapBuffer3[i]=drawMA;      
                
   i++;
   }
   
//----
   return(0);
  }
//+------------------------------------------------------------------+