const int L = 3;
const int I = 5;
const int N = 4;
const int K = 6;
long randomTime;

void setup() {
  pinMode(L, OUTPUT);
  pinMode(I, OUTPUT);
  pinMode(N, OUTPUT);
  pinMode(K, OUTPUT);
}

void loop() {
//  int test[] = {I, N, K};
//  order(test, 200, false);
//  off();
  fromLeft(100);
  toRight(100);
}

void off() {
  digitalWrite(L, LOW);
  digitalWrite(I, LOW);
  digitalWrite(N, LOW);
  digitalWrite(K, LOW);
  delay(1000);
}

void startLetter(int letter, int time) {
  digitalWrite(letter, HIGH);
  delay(2 * time);
}

void endLetter(int letter, int time) {
  delay(2 * time);
  digitalWrite(letter, LOW);
}

void schng(int from, int to, int time) {
  delay(2 * time);
  digitalWrite(to, HIGH);
  delay(time);
  digitalWrite(from, LOW);
  delay(2 * time);
}

void order(int list[], int time, bool keepEnd) {
  int length = (int) (sizeof(list) / sizeof(int));

  if(length == 0) {
    return;
  }
  
  startLetter(list[0], time);

  for (int i = 1; i < length; i++) {
    schng(list[i-1], list[i], time);
  }
  
  if(keepEnd) {
    return;
  }

  endLetter(list[length], time);
}

void singleOn(int delayTime) {
  digitalWrite(L, HIGH);
  delay(delayTime);
  digitalWrite(L, LOW);
  digitalWrite(I, HIGH);
  delay(delayTime);
  digitalWrite(I, LOW);
  digitalWrite(N, HIGH);
  delay(delayTime);
  digitalWrite(N, LOW);
  digitalWrite(K, HIGH);
  delay(delayTime);
  digitalWrite(K, LOW);
}

void MiamiMidnight() {
  digitalWrite(L, HIGH);
  digitalWrite(I, HIGH);
  digitalWrite(N, HIGH);
  digitalWrite(K, HIGH);
  randomTime = random(1000, 10000);
  delay(randomTime);
  digitalWrite(K, LOW);
  delay(200);
  digitalWrite(K, HIGH);
  delay(400);
  digitalWrite(I, LOW);
  delay(200);
  digitalWrite(I, HIGH);
  delay(300);
  digitalWrite(K, LOW);
  delay(900);
}

void klinik(int time) {
  int letters[] = {K, L, I, N, I, K};
  order(letters, time, false);

  delay(1000);
}

void fromLeft(int del) {
  digitalWrite(L, HIGH);
  delay(del);
  digitalWrite(I, HIGH);
  delay(del/4);
  digitalWrite(L, LOW);
  delay(del);
  digitalWrite(N, HIGH);
  delay(del/4);
  digitalWrite(I, LOW);
  delay(del);
  digitalWrite(K, HIGH);
  delay(del/4);
  digitalWrite(N, LOW);
  delay(del*2);

  digitalWrite(L, HIGH);
  delay(del);
  digitalWrite(I, HIGH);
  delay(del/4);
  digitalWrite(L, LOW);
  delay(del);
  digitalWrite(N, HIGH);
  delay(del/4);
  digitalWrite(I, LOW);
  delay(del*2);

  digitalWrite(L, HIGH);
  delay(del);
  digitalWrite(I, HIGH);
  delay(del/4);
  digitalWrite(L, LOW);
  delay(del*2);

  digitalWrite(L, HIGH);
  delay(3000);
}

void fromRight(int del) {
  digitalWrite(K, HIGH);
  delay(del);
  digitalWrite(N, HIGH);
  delay(del/4);
  digitalWrite(K, LOW);
  delay(del);
  digitalWrite(I, HIGH);
  delay(del/4);
  digitalWrite(N, LOW);
  delay(del);
  digitalWrite(L, HIGH);
  delay(del/4);
  digitalWrite(I, LOW);
  delay(del*2);

  digitalWrite(K, HIGH);
  delay(del);
  digitalWrite(N, HIGH);
  delay(del/4);
  digitalWrite(K, LOW);
  delay(del);
  digitalWrite(I, HIGH);
  delay(del/4);
  digitalWrite(N, LOW);
  delay(del*2);

  digitalWrite(K, HIGH);
  delay(del);
  digitalWrite(N, HIGH);
  delay(del/4);
  digitalWrite(K, LOW);
  delay(del*2);

  digitalWrite(K, HIGH);
  delay(3000);
}

void toLeft(int del) {
  digitalWrite(L, HIGH);
  digitalWrite(I, HIGH);
  digitalWrite(N, HIGH);
  digitalWrite(K, HIGH);

  digitalWrite(L, LOW);
  delay(del*2);

  digitalWrite(L, HIGH);
  delay(del/4);
  digitalWrite(I, LOW);
  delay(del);
  digitalWrite(L, LOW);
  delay(del*2);

  digitalWrite(I, HIGH);
  delay(del/4);
  digitalWrite(N, LOW);
  delay(del);
  digitalWrite(L, HIGH);
  delay(del/4);
  digitalWrite(I, LOW);
  delay(del);
  digitalWrite(L, LOW);
  delay(del*2);

  digitalWrite(N, HIGH);
  delay(del/4);
  digitalWrite(K, LOW);
  delay(del);
  digitalWrite(I, HIGH);
  delay(del/4);
  digitalWrite(N, LOW);
  delay(del);
  digitalWrite(L, HIGH);
  delay(del/4);
  digitalWrite(I, LOW);
  delay(del);
  digitalWrite(L, LOW);
  delay(3000);
}

void toRight(int del) {
  digitalWrite(L, HIGH);
  digitalWrite(I, HIGH);
  digitalWrite(N, HIGH);
  digitalWrite(K, HIGH);

  digitalWrite(K, LOW);
  delay(del*2);

  digitalWrite(K, HIGH);
  delay(del/4);
  digitalWrite(N, LOW);
  delay(del);
  digitalWrite(K, LOW);
  delay(del*2);

  digitalWrite(N, HIGH);
  delay(del/4);
  digitalWrite(I, LOW);
  delay(del);
  digitalWrite(K, HIGH);
  delay(del/4);
  digitalWrite(N, LOW);
  delay(del);
  digitalWrite(K, LOW);
  delay(del*2);

  digitalWrite(I, HIGH);
  delay(del/4);
  digitalWrite(L, LOW);
  delay(del);
  digitalWrite(N, HIGH);
  delay(del/4);
  digitalWrite(I, LOW);
  delay(del);
  digitalWrite(K, HIGH);
  delay(del/4);
  digitalWrite(N, LOW);
  delay(del);
  digitalWrite(K, LOW);
  delay(3000);
}