controlRGB via joystick

/*
   03.02.2019
   Written by: Gabby Shimoni
   Description:
   This program makes and RGB led shine based on input from joystick as follows:
   X value control the RED led
   Y axis controls the GREEN led
   pb turns the BLUE led ON
*/

#define redLedPin 9
#define greenLedPin 11
#define blueLedPin 10

#define pbPin 2
int pbState = 0;
#define potXpin A0
#define potYpin A1
int potXval = 0, potYval = 0;

void setup() {
  Serial.begin(9600);
  pinMode(redLedPin, OUTPUT);
  pinMode(greenLedPin, OUTPUT);
  pinMode(blueLedPin, OUTPUT);
  pinMode(pbPin, INPUT);
}

void loop() {
  potXval = analogRead(potXpin);
  potYval = analogRead(potYpin);
  pbState = digitalRead(pbPin);

  potXval = map(potXval, 0, 1023, 0, 255);
  potYval = map(potYval, 0, 1023, 0, 255);

  analogWrite(redLedPin, potXval);
  analogWrite(greenLedPin, potYval);
  if (pbState==HIGH) {
    digitalWrite(blueLedPin, HIGH);
  }
  else {
    digitalWrite(blueLedPin, LOW);
  }
  delay(200);
}