int a = A0;
int b = A1;
int SW = 2;

int xposition = 0;
int yposition = 0;
int SW_state = 0;
int mapX = 0;
int mapY = 0;

void setup() {
  pinMode(1, OUTPUT);
  pinMode(2, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(a, INPUT);
  pinMode(b, INPUT);
  pinMode(SW,INPUT_PULLUP);
}

void loop() {
  xposition = analogRead(a);
  yposition = analogRead(b);
  SW_state = digitalRead(SW);
  mapX = map(xposition, 0, 1023, -512, 512);
  mapY = map(yposition, 0, 1023, -512, 512);

  if (0) {
    digitalWrite(1, LOW);
    digitalWrite(2, LOW);
    digitalWrite(3, LOW);
    digitalWrite(4, LOW);
  }

  else if (xposition > 512) {
    digitalWrite(1, HIGH);
    digitalWrite(2, LOW);
    digitalWrite(3, LOW);
    digitalWrite(4, LOW);
  }

  else if (yposition > 512) {
    digitalWrite(1, LOW);
    digitalWrite(2, HIGH);
    digitalWrite(3, LOW);
    digitalWrite(4, LOW);
  }

  else if (yposition < 512) {
    digitalWrite(1, LOW);
    digitalWrite(2, LOW);
    digitalWrite(3, LOW);
    digitalWrite(4, HIGH);
  }

  else if (xposition < 512) {
    digitalWrite(1, LOW);
    digitalWrite(2, LOW);
    digitalWrite(3, HIGH);
    digitalWrite(4, LOW);
  }

  else if (xposition + yposition > 0) {
    digitalWrite(1, LOW);
    digitalWrite(2, LOW);
    digitalWrite(3, LOW);
    digitalWrite(4, LOW);
  }
}