const int centerLED = 4;
const int player1Button = 5;
const int player1LED = 2;
const int player2Button = 6;
const int player2LED = 3;
int player1Score = 0;
int player2Score = 0;
int cycles = 0;
int randomTime = 0;
int reactionTime1 = 0;
int reactionTime2 = 0;

void setup() {
  pinMode(centerLED, OUTPUT);
  pinMode(player1Button, INPUT_PULLUP);
  pinMode(player1LED, OUTPUT);
  pinMode(player2Button, INPUT_PULLUP);
  pinMode(player2LED, OUTPUT);
  Serial.begin(9600);
  randomSeed(analogRead(0));
}

void loop() {
  if (cycles < 20) {
    randomTime = random(1000, 5000);
    digitalWrite(centerLED, LOW);
    delay(randomTime);
    digitalWrite(centerLED, HIGH);
    reactionTime1 = 0;
    reactionTime2 = 0;
    while (digitalRead(player1Button) == HIGH && digitalRead(player2Button) == HIGH) {
      delay(1);
    }
    if (digitalRead(player1Button) == LOW) {
      digitalWrite(player1LED, HIGH);
      player1Score++;
      reactionTime1 = millis() - (randomTime + 1000);
    }
    if (digitalRead(player2Button) == LOW) {
      digitalWrite(player2LED, HIGH);
      player2Score++;
      reactionTime2 = millis() - (randomTime + 1000);
    }
    delay(500);
    digitalWrite(player1LED, LOW);
    digitalWrite(player2LED, LOW);
    Serial.print("Cycle: ");
    Serial.print(cycles + 1);
    Serial.print(", Player 1 score: ");
    Serial.print(player1Score);
    Serial.print(", Reaction Time: ");
    Serial.print(reactionTime1);
    Serial.print(", Player 2 score: ");
    Serial.print(player2Score);
    Serial.print(", Reaction Time: ");
    Serial.println(reactionTime2);
    cycles++;
  } else {
    if (player1Score > player2Score) {
      for (int i = 0; i < 5; i++) {
        digitalWrite(player1LED, HIGH);
        delay(250);
        digitalWrite(player1LED, LOW);
        delay(250);
      }
    } else if (player2Score > player1Score) {
      for (int i = 0; i < 5; i++) {
        digitalWrite(player2LED, HIGH);
        delay(250);
        digitalWrite(player2LED, LOW);
        delay(250);
      }
    }
    while (1) {
      delay(180);
    }
  }
}