//+---------------------------------------------------------------------+
//|                                                         _Levels.mq4 |
//|                                           Copyright © InVest0r 2010 |
//+---------------------------------------------------------------------+
#property indicator_chart_window
#property indicator_buffers 8
#property indicator_color1 Red     //0
#property indicator_color2 Blue    //1
#property indicator_color3 Red     //2
#property indicator_color4 Blue    //3
#property indicator_color5 Gray    //4
#property indicator_color6 Gray    //5
#property indicator_color7 White   //6
#property indicator_color8 White   //7
 
extern int nobs         =900,       
           Level1       =14,     
           Level2       =8,     
           Level3       =50;               
                                    
double levelup1[999],leveldn1[999],
       levelup2[999],leveldn2[999],
       levelup3[999],leveldn3[999];
double level1,level2,level3;
double trdn[], trup[];
double up[],dn[];
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
int init() {
   SetIndexBuffer(0,dn);
   SetIndexStyle(0,DRAW_ARROW,EMPTY,1);
   SetIndexArrow(0,238);
   SetIndexBuffer(1,up);
   SetIndexStyle(1,DRAW_ARROW,EMPTY,1);
   SetIndexArrow(1,236); 
   SetIndexBuffer(2,trdn);
   SetIndexStyle(2,DRAW_LINE);   
   SetIndexBuffer(3,trup);
   SetIndexStyle(3,DRAW_LINE);  
//   SetIndexBuffer(4,levelup2);
//   SetIndexStyle(4,DRAW_LINE);
//   SetIndexBuffer(5,leveldn2);
//   SetIndexStyle(5,DRAW_LINE);
   SetIndexBuffer(6,levelup3);
   SetIndexStyle(6,DRAW_LINE,0,2);
   SetIndexBuffer(7,leveldn3);
   SetIndexStyle(7,DRAW_LINE,0,2);   
   
   SetIndexShift(4,2);
   SetIndexShift(5,2);   
   return(0); }
//+------------------------------------------------------------------+
//| expert deinitialization function                                 |
//+------------------------------------------------------------------+
int deinit() {
   ObjectsDeleteAll(0);   
  Comment(""); 
   return(0); }
//------------------------------------------------------------------------   
int start() {
   level1=2.0/(1+Level1);  
   
   for(int i=nobs; i>=0; i--) {      
   
   if(iHigh(NULL,0,i)>levelup1[i+1]) levelup1[i]=iHigh(NULL,0,i);
     else levelup1[i]=level1*iHigh(NULL,0,i)+(1-level1)*levelup1[i+1];
   if(iLow(NULL,0,i)<leveldn1[i+1]) leveldn1[i]=iLow(NULL,0,i);
     else leveldn1[i]=level1*iLow(NULL,0,i)+(1-level1)*leveldn1[i+1];           
           
     levelup2[i]=High[Highest(NULL,0,MODE_HIGH,Level2,i)];
     leveldn2[i]=Low[Lowest (NULL,0,MODE_LOW ,Level2,i)];  
     
     levelup3[i]=High[Highest(NULL,0,MODE_HIGH,Level3,i)];
     leveldn3[i]=Low[Lowest (NULL,0,MODE_LOW ,Level3,i)]; } 
 
   for(i=0; i<nobs; i++){ 
   if (levelup1[i]<levelup1[i+1]) {trdn[i]=levelup1[i]; }  
   if (leveldn1[i]>leveldn1[i+1]) {trup[i]=leveldn1[i]; } 
      
   if (levelup1[i]<levelup2[i] && iHigh(NULL,0,i+1)==levelup2[i+1]) {
      ObjectCreate(Time[i]+Symbol()+"dn",OBJ_ARROW,0,Time[i],levelup1[i]);
      ObjectSet(Time[i]+Symbol()+"dn",OBJPROP_ARROWCODE,238);
      ObjectSet(Time[i]+Symbol()+"dn",OBJPROP_COLOR,Red);}      
   if (leveldn1[i]>leveldn2[i] && iLow(NULL,0,i+1)==leveldn2[i+1]) {
      ObjectCreate(Time[i]+Symbol()+"up",OBJ_ARROW,0,Time[i],leveldn1[i]);
      ObjectSet(Time[i]+Symbol()+"up",OBJPROP_ARROWCODE,236);
      ObjectSet(Time[i]+Symbol()+"up",OBJPROP_COLOR,Lime);} 
   }
   return(0); }
//---------------------------------------------------------------------------------------------------------------