This tutorial includes:

1. how to bind the irseeker.

2. how to find if the ball is on the left or on the right side of the irseeker.

   Binding the irseeker:

3. put this into your main.cpp file.

        #include <iostream>
        #include <ev3wrap.h>
        int main() {
   
            return 0;
        }
   

4. Plug the irseeker sensor into the number ports (1, 2, 3, 4)
5. In order for the code to recognize the irseeker, add:

   Ev3Wrap::IrSeeker irSeeker = Ev3Wrap::IrSeeker::bind();
   // this creates an Irseeker sensor called 'irseeker'.
   

   ---

   finding the direction of the ball:

6. put this into your code:

   irseeker.getBallDirection()
   /*
    returning 0 means that 
    the ball is in front of the sensor
   
    returning 1 means that 
    the ball is on the right of the sensor
   
    returning -1 means that 
    the ball is on the left of the sensor
   
    returning -2 means that
    the ball is undetected
   */
   

   Example:

   // make the robot to look at the ball
   while (true) {
    int ballDir = irseeker.getBallDirection();
    if (ballDir > 0) {
        // turn right
    }
    else if (ballDir < 0) {
        // turn left
    }
    else {
        // stop
    }
   }