/* QUIZ GAME CODE FOR ARDUINO UNO */

/* Board: Arduino Uno / Nano [atmega328p]
 * Owner: Subhadeep Dhang
 * Creation Date: 07.05.2022
 * Lisence: Open Source [ Anybody can Download and use it]
*/


#define LED1 8
#define LED2 9
#define LED3 10
#define LED4 11
#define LED5 12
#define LED6 13
#define SW1 A0
#define SW2 A1
#define SW3 A2
#define SW4 A3
#define SW5 A4
#define SW6 A5
#define SRT 6

void reset (void);
int count = 0;
int Top_scorer[3];                                       // 0th pos. is unused
int f1 = 0, f2 = 0, f3 = 0, f4 = 0, f5 = 0, f6 = 0;      // To make sure one player pressed one time
long int time;

void setup() {

  Serial.begin(9600);

  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(LED3, OUTPUT);
  pinMode(LED4, OUTPUT);
  pinMode(LED5, OUTPUT);
  pinMode(LED6, OUTPUT);

  pinMode(SW1, INPUT_PULLUP);
  pinMode(SW2, INPUT_PULLUP);
  pinMode(SW3, INPUT_PULLUP);
  pinMode(SW4, INPUT_PULLUP);
  pinMode(SW5, INPUT_PULLUP);
  pinMode(SW6, INPUT_PULLUP);
  pinMode(SRT, INPUT_PULLUP);
}

void loop () {

  while (digitalRead(SRT) != LOW);                       // wait for SRT button to be pressed

  Serial.println("\n::::[ START ]::::");
  time = millis();

  while (count != 2 && (millis() - time) < 10000) {     // wait 10 sec or [2 player pressed button] , then reset

    if (digitalRead(SW1) == LOW && count < 2 && f1 == 0) {
      Serial.println("Player 1");
      count++;
      f1 = 1;
      Top_scorer[count] = 1;
    }
    if (digitalRead(SW2) == LOW && count < 2 && f2 == 0) {
      Serial.println("Player 2");
      count++;
      f2 = 1;
      Top_scorer[count] = 2;
    }
    if (digitalRead(SW3) == LOW && count < 2 && f3 == 0) {
      Serial.println("Player 3");
      count++;
      f3 = 1;
      Top_scorer[count] = 3;
    }
    if (digitalRead(SW4) == LOW && count < 2 && f4 == 0) {
      Serial.println("Player 4");
      count++;
      f4 = 1;
      Top_scorer[count] = 4;
    }
    if (digitalRead(SW5) == LOW && count < 2 && f5 == 0) {
      Serial.println("Player 5");
      count++;
      f5 = 1;
      Top_scorer[count] = 5;
    }
    if (digitalRead(SW6) == LOW && count < 2 && f6 == 0) {
      Serial.println("Player 6");
      count++;
      f6 = 1;
      Top_scorer[count] = 6;
    }

    digitalWrite((7 + Top_scorer[1]), HIGH);   // Turn on winner's led
  }

  Serial.println("::::[ END ]::::");

  long duration = 5;                              // Blinks 5 times then reset
  Serial.print("\nAuto Reseting within: ");

  while (duration--) {

    digitalWrite((7 + Top_scorer[2]), HIGH);      // 1st runner up blink [fast]
    delay(400);
    digitalWrite((7 + Top_scorer[2]), LOW);
    delay(400);
    Serial.print(duration);
    Serial.print(" ");
  }
  Serial.print("done.\n");
  Serial.println("Press SRT button to start again.");
  reset();
}

void reset (void) {

  PORTB = 0x00;             // turn off all led
  count = 0;
  Top_scorer[1] = 0;
  Top_scorer[2] = 0;
  f1 = 0;
  f2 = 0;
  f3 = 0;
  f4 = 0;
  f5 = 0;
  f6 = 0;
}