int lastsate = HIGH;
int count = 0;


void setup() {
 Serial.begin(115200);
 pinMode(4, INPUT);

 for(int x=13;x>=8; x--) {
 
 pinMode(x, OUTPUT); 
 }

}

void loop() {
int sw = digitalRead(4);
 if(lastsate != sw) {
  lastsate = sw;
  if(sw == HIGH) {

  } 
  if(sw == LOW) {
    count++;
    Serial.println(count);
     delay(300);
  }
 }

if (count==1) {
 ltor(); 
}
else if (count==2) { 
  rtol();
}
else if (count==3) { 
  hled();
}
else if (count==4) { 
  lled();
}
else { 
  hled();
  delay(1000);
  lled();
  delay(1000);
}
 

} //end loop




void ltor() {

  int left = 13;
  while (left >= 8) {
    digitalWrite(left, 1);
    delay(50);
    digitalWrite(left, 0);
    delay(50);
    left = left - 1;
  }
  }
void rtol() {
  int a = 8;
  while (a <= 13) {
    digitalWrite(a, 1);
    delay(50);
    digitalWrite(a, 0);
    delay(50);
    a = a + 1;

  }
}

void hled() {
  int b = 13;
  while (b >= 8) {
    digitalWrite(b, 1);
    b = b - 1;
  }
  delay(300);
}

void lled() {
  int c = 13;
  while (c >= 8) {
    digitalWrite(c, 0);
    c = c - 1;
  }
  delay(300);
}