button game arduino

int winStates[] = {1, 1, 2, 3, 3, 3, 3};
int states[] = {0, 0, 0, 0, 0, 0, 0};
int s[] = {0, 0};
int loc = 0 ;
int s_loc = 0 ;
int s_isMatch = 0;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(13, OUTPUT);
  pinMode(6, INPUT);
  pinMode(8, INPUT);
  pinMode(4, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  int buttonState1 = digitalRead(6);
  int buttonState2 = digitalRead(8);
  int buttonState3 = digitalRead(4);

  if (buttonState1 == 1) {
    Serial.println("buttonState1");
    updateState(1, buttonState1);
    waitToLow(6);
  }
  else if (buttonState2 == 1) {
    Serial.println("buttonState2");
    updateState(2, buttonState2);
    waitToLow(8);
  }
  else if (buttonState3 == 1) {
    Serial.println("buttonState3");
    updateState(3, buttonState3);
    waitToLow(4);
  } else {
    updateState(1, 0);
    updateState(2, 0);
    updateState(3, 0);
  }
  delay(1);        // delay in between reads for stability

}

void waitToLow(int pin) {
  while (digitalRead(pin) == 1) {
    delay(100);
  }
  delay(100);
}

void updateState(int btn, int state) {
  if (state == 1) {
    int isFirst = 0;
    s[s_loc] = btn;
    s_loc = s_loc + 1;
    if (s_loc > 1) {
      s_loc = 0;
    }
    if (s_isMatch == 0) {
      s_isMatch = 1;
      for (int i = 0; i < 2; i++) {
        Serial.print(s[i]);
        Serial.print(",");
        if (s[i] != 1) {
          s_isMatch = 0;
        }
      }
      if (s_isMatch == 1) {
        isFirst = 1;
      }
      Serial.println("");
    }

    if (s_isMatch == 1) {
      Serial.println("s_ match");
      if(isFirst == 1){
        states[0] = 1;
        loc=1;
      }
      states[loc] = btn;
      loc = loc + 1;
      if (loc > 6) {
        loc = 0;
        s_isMatch = 0;
      }
      int isMatch = 1;
      for (int i = 0; i < 7; i++) {
        Serial.print(states[i]);
        Serial.print(",");
        if (winStates[i] != states[i]) {
          isMatch = 0;
        }
      }
      Serial.println("");
      if (isMatch == 1) {
        digitalWrite(13, HIGH);   // turn the LED on (HIGH is the voltage level)
        delay(1000);
      } else {
        digitalWrite(13, LOW);   // turn the LED on (HIGH is the voltage level)
      }
    }

  } else {

  }
}