int button_pin = 4;
int x_pin = A0;
int y_pin = A1;
int counter1 = 0;
int counter = 0;
int y_val, y_val_old;
int x_val, x_val_old;

void setup() {

pinMode(button_pin, INPUT);
Serial.begin(9600);
}

void loop() {

 x_val = analogRead(x_pin); 
 y_val = analogRead(y_pin);


if(x_val == 1023 && x_val_old == 512){
    counter1++;
  }
 if(x_val == 0 && x_val_old == 512){
  counter1--;
}
if(y_val == 1023 && y_val_old == 512){
  counter++;
}
if (y_val == 0 && y_val_old ==512){
  counter--;
}
  Serial.print(counter1);
  Serial.print(" ");
  Serial.println(counter);

  x_val_old = x_val;
  y_val_old = y_val;
}