// set pin numbers:
const int buttonPin = 2;     	//PB pada pin 2
const int ledPin =  13;      	//led pada pin 13
const int led12 = 12;		//led pada pin 12
const int led11 = 11;		//led pada pin 11
const int led10 = 10;		//led pada pin 10
const int led9 = 9;		//led pada pin 9

// variables will change:
int buttonState = 0;         // variable untuk status PB

void setup() {
  // inisialisasi LED pada output arduino UNO:
  pinMode(ledPin, OUTPUT);
  pinMode(led12, OUTPUT);
  pinMode(led11, OUTPUT);
  pinMode(led10, OUTPUT);
  pinMode(led9, OUTPUT);
  
  // initialize the pushbutton pin as an input:
  pinMode(buttonPin, INPUT);
}

void loop() {
  // read the state of the pushbutton value:
  buttonState = digitalRead(buttonPin);

  // check if the pushbutton is pressed.
  // if it is, the buttonState is HIGH:
  if (buttonState == HIGH) {
    // turn LED on:
    digitalWrite(ledPin, HIGH);   //led12 nyala
    delay(50);
    digitalWrite(ledPin, LOW);
    delay(50);
    digitalWrite(led12, HIGH);
    digitalWrite(led11, LOW);
    digitalWrite(led10, LOW);
    digitalWrite(led9, LOW);
    delay(100);
    digitalWrite(led12, LOW);
    digitalWrite(led11, LOW);
    digitalWrite(led10, LOW);
    digitalWrite(led9, LOW);
    delay(50);
    digitalWrite(ledPin, HIGH); //led11 nyala
    delay(50);
    digitalWrite(ledPin, LOW);
    delay(50);
    digitalWrite(led12, LOW);
    digitalWrite(led11, HIGH);
    digitalWrite(led10, LOW);
    digitalWrite(led9, LOW);
    delay(100);
    digitalWrite(led12, LOW);
    digitalWrite(led11, LOW);
    digitalWrite(led10, LOW);
    digitalWrite(led9, LOW);
    delay(50);
    digitalWrite(ledPin, HIGH); //led10 nyala
    delay(50);
    digitalWrite(ledPin, LOW);
    delay(50);
    digitalWrite(led12, LOW);
    digitalWrite(led11, LOW);
    digitalWrite(led10, HIGH);
    digitalWrite(led9, LOW);
    delay(100);
    digitalWrite(led12, LOW);
    digitalWrite(led11, LOW);
    digitalWrite(led10, LOW);
    digitalWrite(led9, LOW);
    delay(50);
    digitalWrite(ledPin, HIGH); //led 9 nyala
    delay(50);
    digitalWrite(ledPin, LOW);
    delay(50);
    digitalWrite(led12, LOW);
    digitalWrite(led11, LOW);
    digitalWrite(led10, LOW);
    digitalWrite(led9, HIGH);
    delay(100);
    digitalWrite(led12, LOW);
    digitalWrite(led11, LOW);
    digitalWrite(led10, LOW);
    digitalWrite(led9, LOW);
    delay(50);
  } else {
    // turn LED off:
    digitalWrite(ledPin, HIGH);
    delay(50);
    digitalWrite(ledPin, LOW);
    delay(50);
    digitalWrite(led12, LOW);
    digitalWrite(led11, LOW);
    digitalWrite(led10, LOW);
    digitalWrite(led9, LOW);
  }
}