Requesting help on finding peak and trough prices and finding the corresponding RSI values

[Bo Jin]

Hello, I am trying to design an EA to trade on divergence between the prices and RSI values. I have read this article https://www.mql5.com/en/articles/1456 and borrowed some logic in my coding to transfer an indicator code into an EA code. However, I have two questions and I would greatly appreciate help on them!

1. I have set up "Indicator Buffers Emulation" and int "limit, MaxBar, i, counted_bars", but I am not sure if I am coding it correctly. I would like peak[i] to represent a peak price and peak[i+1] to represent the peak price prior to peak[i], the same for trough prices (Should I use a different int here from "i"?). Could anyone take a look at my code and see if the arrays and the ints are correctly set up for my EA?

2. I would like to find RSI values corresponding to the peak/trough prices, for example, RSIpeak[i] and RSIpeak[i+1], but I don't know how I should write this scheme, I have set up an Array as Series for RSI then I don't know what to do next, as it is not certain how many bars passed between peak[i] and peak[i+1]?

Thanks again for your time reading my question and my deep gratitude for anyone who can help me solve these two problems.

//---- buffers
double peak[];
double trough[];
double rsi[];

int start()
  {
// GETTING THE AMOUNT OF ALL BARS OF THE CHART
   int IBARS = iBars(NULL, 0);
 
// INDICATOR BUFFERS EMULATION
   if(ArraySize(peak) < IBARS)
     {
       ArraySetAsSeries(peak, false);
       ArraySetAsSeries(trough, false);
       ArraySetAsSeries(rsi, false);
       //----  
       ArrayResize(peak, IBARS); 
       ArrayResize(trough, IBARS); 
       ArrayResize(rsi, IBARS); 
       //----
       ArraySetAsSeries(peak, false);
       ArraySetAsSeries(trough, false);
       ArraySetAsSeries(rsi, false); 
     } 
    // INSERTION OF A STATIC INTEGER MEMORY VARIABLE
   static int IndCounted;

//----+ Insertion of integer variables and GETTING ALREADY CALCULATED BARS
   int limit, MaxBar, i, counted_bars = IndCounted;
//----+ REMEMBERING THE AMOUNT OF ALL BARS OF THE CHART
   IndCounted = IBARS - 1;
//---- defining the number of the oldest bar,   
//     starting from which new bars will be recalculated
   limit = IBARS - counted_bars - 1; 
//---- defining the number of the oldest bar, 
//     starting from which new bars will be recalculated
   MaxBar = IBARS - 1; 
//---- initialization of zero 
   if(limit > MaxBar)
     {
       limit = MaxBar;
       for(i = IBARS - 1; i >= 0; i--)
         {
           peak[i] = 0.0;
           trough[i] = 0.0;
           rsi[i] = 0.0;
         }
     }
//----+ THE FIRST CYCLE OF INDICATOR CALCULATION 
   for(i = IBARS - counted_bars; i >= 0; i--)
     {
       // Finding the peak prices
     if(iHighest(NULL,0,MODE_HIGH,5,1)==2)
     peak[i]=High[iHighest(NULL,0,MODE_HIGH,5,1)];
     }
//----+ THE SECOND CYCLE OF INDICATOR CALCULATION 
   for(i = IBARS - counted_bars; i >= 0; i--)
     {
       // Finding the trough prices
     if(iLowest(NULL,0,MODE_HIGH,5,1)==2)
     trough[i]=Low[iLowest(NULL,0,MODE_HIGH,5,1)];
     }