//+------------------------------------------------------------------+
//|                                                     iMA_Fibs.mq4 |
//|                                Copyright © 2006, Robert L Hill   |
//|                                     mailto:robydoby314@yahoo.com |
//+------------------------------------------------------------------+
// This indicator allows selection of MA type and sets levels based on Fib values
// Added MAType 4 to use LSMA
#property copyright "Copyright © 2005, Metaquotes"
#property link      "mailto:metaquotes@metaquotes.net"

#property indicator_chart_window
#property indicator_buffers 8
#property indicator_color1 Blue
#property indicator_color2 Magenta
#property indicator_color3 Magenta
#property indicator_color4 Magenta
#property indicator_color5 Magenta
#property indicator_color6 Magenta
#property indicator_color7 Magenta
#property indicator_color8 Magenta
#property indicator_width1  2
#property indicator_width2  1
#property indicator_width3  1
#property indicator_width4  1
#property indicator_width5  1
#property indicator_width6  1
#property indicator_width7  1
#property indicator_width8  1


//---- input parameters
extern int       MAPeriod=157;
extern int       MAType=1;
extern int fibo1 = 21;
extern int fibo2 = 34;
extern int fibo3 = 55;
extern int fibo4 = 89;
extern int fibo5 = 144;
extern int fibo6 = 233;
extern int fibo7 = 377;

//---- buffers
double LineBuffer[];
double Fib1[];
double Fib2[];
double Fib3[];
double Fib4[];
double Fib5[];
double Fib6[];
double Fib7[];


//---- variables
int    MAMode;
string strMAType;



//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
{
   IndicatorDigits(MarketInfo(Symbol(),MODE_DIGITS)+1);
   //---- indicators
   IndicatorBuffers(8);
   SetIndexStyle(0,DRAW_LINE);
   SetIndexBuffer(0,LineBuffer);
   SetIndexDrawBegin(0,MAPeriod);
   SetIndexStyle(1,DRAW_LINE);
   SetIndexBuffer(1,Fib1);
   SetIndexDrawBegin(1,MAPeriod);
   SetIndexStyle(2,DRAW_LINE);
   SetIndexBuffer(2,Fib2);
   SetIndexDrawBegin(2,MAPeriod);
   SetIndexStyle(3,DRAW_LINE);
   SetIndexBuffer(3,Fib3);
   SetIndexDrawBegin(3,MAPeriod);
   SetIndexStyle(4,DRAW_LINE);
   SetIndexBuffer(4,Fib4);
   SetIndexDrawBegin(4,MAPeriod);
   SetIndexStyle(5,DRAW_LINE);
   SetIndexBuffer(5,Fib5);
   SetIndexDrawBegin(5,MAPeriod);
   SetIndexStyle(6,DRAW_LINE);
   SetIndexBuffer(6,Fib6);
   SetIndexDrawBegin(6,MAPeriod);
   SetIndexStyle(7,DRAW_LINE);
   SetIndexBuffer(7,Fib7);
   SetIndexDrawBegin(7,MAPeriod);
   //---- name for DataWindow and indicator subwindow label
   IndicatorShortName( strMAType+ " (" +MAPeriod + ") ");
   
   //----
switch (MAType)
   {
      case 1: strMAType="EMA"; MAMode=MODE_EMA; break;
      case 2: strMAType="SMMA"; MAMode=MODE_SMMA; break;
      case 3: strMAType="LWMA"; MAMode=MODE_LWMA; break;
      case 4: strMAType="LSMA"; break;
      default: strMAType="SMA"; MAMode=MODE_SMA; break;
   }
   //----
   return(0);
}
//+------------------------------------------------------------------+
//| Custor indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
{
   //---- 
   
   //----
   return(0);
}

double LSMA(int Rperiod, int shift)
{
   int i;
   double sum;
   int length;
   double lengthvar;
   double tmp;
   double wt;

   length = Rperiod;
 
   sum = 0;
   for(i = length; i >= 1  ; i--)
   {
     lengthvar = length + 1;
     lengthvar /= 3;
     tmp = 0;
     tmp = ( i - lengthvar)*Close[length-i+shift];
     sum+=tmp;
    }
    wt = sum*6/(length*(length+1));
    
    return(wt);
}


//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
{
   double MA;
   int limit;
   int counted_bars = IndicatorCounted();
   //---- check for possible errors
   if (counted_bars<0) return(-1);
   //---- last counted bar will be recounted
   if (counted_bars>0) counted_bars--;
   limit = Bars - counted_bars;

   for(int i=limit; i>=0; i--)
   {
      if (MAType == 4)
      {
        MA = LSMA(MAPeriod,i);
      }
      else
      {
        MA = iMA(NULL,0,MAPeriod,0,MAMode,PRICE_CLOSE,i);
      }
     
      
      LineBuffer[i] = MA;
      Fib1[i] = MA + fibo1*Point;
      Fib2[i] = MA + fibo2*Point;
      Fib3[i] = MA + fibo3*Point;
      Fib4[i] = MA + fibo4*Point;
      Fib5[i] = MA + fibo5*Point;
      Fib6[i] = MA + fibo6*Point;
      Fib7[i] = MA + fibo7*Point;

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