// variables 
int RED1 = 1;
int RED2 = 2;
int RED3 = 3;
int RED4 = 4;

int YELLOW1 = 5;
int YELLOW2 = 6;
int YELLOW3 = 7;
int YELLOW4 = 8;

int GREEN1 = 9;
int GREEN2 = 10;
int GREEN3 = 11;
int GREEN4 = 12;

int DELAY_GREEN = 1000;
int DELAY_YELLOW = 200;
int DELAY_RED = 1000;
int HIDUP = HIGH;
int MATI = LOW;



// basic functions
void setup() {
  pinMode(RED1, OUTPUT);
  pinMode(RED2, OUTPUT);
  pinMode(RED3, OUTPUT);
  pinMode(RED4, OUTPUT);
  pinMode(YELLOW1, OUTPUT);
  pinMode(YELLOW2, OUTPUT);
  pinMode(YELLOW3, OUTPUT);
  pinMode(YELLOW4, OUTPUT);
  pinMode(GREEN1, OUTPUT);
  pinMode(GREEN2, OUTPUT);
  pinMode(GREEN3, OUTPUT);
  pinMode(GREEN4, OUTPUT);
}


// Hijau - kuning - Merah
// [1,5,9]
// [2,6,10]
// [3,7,11]
// [4,8,12]

void loop() {
  // Jedah(1);
  Jalan1();
  delay(5000);
  Jedah();
  Jalan2();
  delay(5000);
  Jedah();
  Jalan3();
  delay(5000);
  Jedah();
  Jalan4();
  delay(5000);
  Jedah();

}

void Jalan1(){
 digitalWrite(1, HIDUP);
 digitalWrite(2, MATI);
 digitalWrite(3, MATI);
 digitalWrite(4, MATI);
 digitalWrite(5, MATI);
 digitalWrite(6, MATI);
 digitalWrite(7, MATI);
 digitalWrite(8, MATI);
 digitalWrite(9, MATI);
 digitalWrite(10, HIDUP);
 digitalWrite(11, HIDUP);
 digitalWrite(12, HIDUP);
}


void Jalan2(){
 digitalWrite(1, MATI);
 digitalWrite(2, HIDUP);
 digitalWrite(3, MATI);
 digitalWrite(4, MATI);
 digitalWrite(5, MATI);
 digitalWrite(6, MATI);
 digitalWrite(7, MATI);
 digitalWrite(8, MATI);
 digitalWrite(9, HIDUP);
 digitalWrite(10, MATI);
 digitalWrite(11, HIDUP);
 digitalWrite(12, HIDUP);
}

void Jalan3(){
 digitalWrite(1, MATI);
 digitalWrite(2, MATI);
 digitalWrite(3, HIDUP);
 digitalWrite(4, MATI);
 digitalWrite(5, MATI);
 digitalWrite(6, MATI);
 digitalWrite(7, MATI);
 digitalWrite(8, MATI);
 digitalWrite(9, HIDUP);
 digitalWrite(10, HIDUP);
 digitalWrite(11, MATI);
 digitalWrite(12, HIDUP);
}
void Jalan4(){
 digitalWrite(1, MATI);
 digitalWrite(2, MATI);
 digitalWrite(3, MATI);
 digitalWrite(4, HIDUP);
 digitalWrite(5, MATI);
 digitalWrite(6, MATI);
 digitalWrite(7, MATI);
 digitalWrite(8, MATI);
 digitalWrite(9, HIDUP);
 digitalWrite(10, HIDUP);
 digitalWrite(11, HIDUP);
 digitalWrite(12, MATI);
}

void Jedah(){
 digitalWrite(1, MATI);
 digitalWrite(2, MATI);
 digitalWrite(3, MATI);
 digitalWrite(4, MATI);
 digitalWrite(5, HIDUP);
 digitalWrite(6, HIDUP);
 digitalWrite(7, HIDUP);
 digitalWrite(8, HIDUP);
 digitalWrite(9, MATI);
 digitalWrite(10, MATI);
 digitalWrite(11, MATI);
 digitalWrite(12, MATI);
 delay(500);


}