//Slide switch
int led1 = 15;
int led2 = 2;
int led3 = 0;
int led4 = 4;
int led5 = 16;
int led6 = 17;
int led7 = 5;
int led8 = 18;
int LED_COUNT = 8;


#define BUTTON_PIN1 32
#define BUTTON_PIN2 33
#define BUTTON_PIN3 34
#define BUTTON_PIN4 35

int BTN_COUNT =  4;

byte LED_PINS[] = {led1, led2, led3, led4, led5, led6, led7, led8};
byte BTN_PINS[] = {BUTTON_PIN1, BUTTON_PIN2, BUTTON_PIN3, BUTTON_PIN4};

int BTN_NUM = 0;
int BTN_STATUS = 0;

int count;
int pinNum;

void setup() {

pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);
pinMode(led3, OUTPUT);
pinMode(led4, OUTPUT);
pinMode(led5, OUTPUT);
pinMode(led6, OUTPUT);
pinMode(led7, OUTPUT);
pinMode(led8, OUTPUT);
pinMode(BUTTON_PIN1, INPUT_PULLUP);
pinMode(BUTTON_PIN2, INPUT_PULLUP);
pinMode(BUTTON_PIN3, INPUT_PULLUP);
pinMode(BUTTON_PIN4, INPUT_PULLUP);
}


void loop() {
  count=0;
  BTN_STATUS = LOW;
  BTN_NUM =0;
  pinNum = 0;
  do {
    delay(200);
    BTN_STATUS = digitalRead(BTN_PINS[count]);
    BTN_NUM = count;

    if (BTN_STATUS == HIGH) {
      if (BTN_NUM == 0) {
        BTN_FUNCTION_0(BTN_NUM);
      }
      else if (BTN_NUM == 1){
        BTN_FUNCTION_1(BTN_NUM);
      }
       else if (BTN_NUM == 2){
        BTN_FUNCTION_2(BTN_NUM);
      }
       else if (BTN_NUM == 3){
        BTN_FUNCTION_3(BTN_NUM);
    }

  }
  count++;

  } while (count<BTN_COUNT);
}

void BTN_FUNCTION_0(int num_btn){
  digitalWrite(led4, HIGH);
  delay(1000);
  digitalWrite(led4, LOW);
  delay(1000);
   digitalWrite(led3, HIGH);
  delay(1000);
  digitalWrite(led3, LOW);
  delay(1000);
   digitalWrite(led2, HIGH);
  delay(1000);
  digitalWrite(led2, LOW);
  delay(1000);
   digitalWrite(led1, HIGH);
  delay(1000);
  digitalWrite(led1, LOW);
  delay(1000);
   digitalWrite(led5, HIGH);
  delay(1000);
  digitalWrite(led5, LOW);
  delay(1000);
   digitalWrite(led6, HIGH);
  delay(1000);
  digitalWrite(led6, LOW);
  delay(1000);
   digitalWrite(led7, HIGH);
  delay(1000);
  digitalWrite(led7, LOW);
  delay(1000);
   digitalWrite(led8, HIGH);
  delay(1000);
  digitalWrite(led8, LOW);
  delay(1000);

}

void BTN_FUNCTION_1(int num_btn) {
  digitalWrite(led1, HIGH);
  digitalWrite(led8, HIGH);
  delay(1000);
  digitalWrite(led1, LOW);
  digitalWrite(led8, LOW);
  delay(1000);

   digitalWrite(led3, HIGH);
  digitalWrite(led6, HIGH);
  delay(1000);
  digitalWrite(led3, LOW);
  digitalWrite(led6, LOW);
  delay(1000);

   digitalWrite(led4, HIGH);
  digitalWrite(led5, HIGH);
  delay(1000);
  digitalWrite(led4, LOW);
  digitalWrite(led5, LOW);
  delay(1000);

   digitalWrite(led2, HIGH);
  digitalWrite(led7, HIGH);
  delay(1000);
  digitalWrite(led2, LOW);
  digitalWrite(led7, LOW);
  delay(1000);

}
void BTN_FUNCTION_2(int num_) {
  digitalWrite(led1, HIGH);
  delay(1000);
  digitalWrite(led1, LOW);
  delay(1000);

  digitalWrite(led2, HIGH);
  delay(1000);
  digitalWrite(led2, LOW);
  delay(1000);

  digitalWrite(led3, HIGH);
  delay(1000);
  digitalWrite(led3, LOW);
  delay(1000);

  digitalWrite(led4, HIGH);
  delay(1000);
  digitalWrite(led4, LOW);
  delay(1000);

  digitalWrite(led5, HIGH);
  delay(1000);
  digitalWrite(led5, LOW);
  delay(1000);

  digitalWrite(led6, HIGH);
  delay(1000);
  digitalWrite(led6, LOW);
  delay(1000);

  digitalWrite(led7, HIGH);
  delay(1000);
  digitalWrite(led7, LOW);
  delay(1000);

  digitalWrite(led8, HIGH);
  delay(1000);
  digitalWrite(led8, LOW);
  delay(1000);

  


  digitalWrite(led8, HIGH);
  delay(1000);
  digitalWrite(led8, LOW);
  delay(1000);

  digitalWrite(led7, HIGH);
  delay(1000);
  digitalWrite(led7, LOW);
  delay(1000);

  digitalWrite(led6, HIGH);
  delay(1000);
  digitalWrite(led6, LOW);
  delay(1000);

  digitalWrite(led5, HIGH);
  delay(1000);
  digitalWrite(led5, LOW);
  delay(1000);

  digitalWrite(led4, HIGH);
  delay(1000);
  digitalWrite(led4, LOW);
  delay(1000);

  digitalWrite(led3, HIGH);
  delay(1000);
  digitalWrite(led3, LOW);
  delay(1000);

  digitalWrite(led2, HIGH);
  delay(1000);
  digitalWrite(led2, LOW);
  delay(1000);

  digitalWrite(led1, HIGH);
  delay(1000);
  digitalWrite(led1, LOW);
  delay(1000);


  

}
void BTN_FUNCTION_3(int num_) {
  
  digitalWrite(led1, HIGH);
  digitalWrite(led3, HIGH);
  digitalWrite(led5, HIGH);
  digitalWrite(led7, HIGH);
  delay(1000);

  digitalWrite(led1, LOW);
  digitalWrite(led3, LOW);
  digitalWrite(led5, LOW);
  digitalWrite(led7, LOW);
  delay(1000);
  
  digitalWrite(led2, HIGH);
  digitalWrite(led4, HIGH);
  digitalWrite(led6, HIGH);
  digitalWrite(led8, HIGH);
  delay(1000);

  digitalWrite(led2, LOW);
  digitalWrite(led4, LOW);
  digitalWrite(led6, LOW);
  digitalWrite(led8, LOW);
  delay(1000);
}