bool game_end;

int p1_led = 2;
int p1_btn = 12;
int p1_pts = 0;

int p2_led = 10;
int p2_btn = 13;
int p2_pts = 0;

int direction = 0; //0 - right, 1 - left
unsigned long time;


void setup()
{
  for (int i = 2; i <= 10; i++)
  {
    pinMode(i, OUTPUT);
  }
  
  pinMode(p1_btn, INPUT_PULLUP);
  pinMode(p2_btn, INPUT_PULLUP);
  Serial.begin(9600);
}


void victory()
{
  for (int i = 0; i < 2; i++)
  {
    digitalWrite(p1_led, HIGH);
    digitalWrite(p2_led, HIGH);
    delay(200);
    digitalWrite(p1_led, LOW);
    digitalWrite(p2_led, LOW);
    delay(200);
  }

  for (int i = 2; i < 10; i++)
  {
    digitalWrite(i, HIGH);
    delay(50);
  }

  for (int i = 2; i < 10; i++)
  {
    digitalWrite(i, LOW);
  }
  
  for (int i = 10; i >= 2; i--)
  {
    digitalWrite(i, HIGH);
    delay(50);
  }

  for (int i = 2; i < 10; i++)
  {
    digitalWrite(i, LOW);
  }
  
  delay(200);
  
  for (int i = 2; i < 10; i++)
  {
    digitalWrite(i, HIGH);
  }
  
  delay(400);
  
  for (int i = 2; i <=10; i++)
  {
    digitalWrite(i, LOW);
  }

  game_end = true;
}


void untimelyPress()
{
  if ((!digitalRead(p1_btn) && !digitalRead(p2_led)) || !digitalRead(p2_btn) && !digitalRead(p1_led))
  {
    for (int j = 0; j < 2; j++)
    {
      time = millis();
      while(millis() < time + 100) {}
      for (int i = 2; i < 11; i++)
      {
        digitalWrite(i, HIGH);
      }

      time = millis();
      while(millis() < time + 100) {}

      for (int i = 11; i >= 2; i--)
      {
        digitalWrite(i, LOW);
      }
    }
  }
}


void loop()
{
  if (!game_end)
  {
    if (direction)
    {
      // to the right
      for (int i = 3; i <= 10; i++)
      {
        digitalWrite(i, HIGH);
        time = millis();
        
        while (millis() < time + 200)
        {
          untimelyPress();
          if (!digitalRead(p1_btn) && digitalRead(p2_led))
          {
            delay(50);
            Serial.println("WIN111");
            p1_pts++;
            Serial.println(p1_pts);
            if (p1_pts == 5)
            {
              victory();
            }
            else
            {
              for (int j = 0; j < p1_pts; j++)
              {
                digitalWrite(p1_led, HIGH);
                delay(400);
                digitalWrite(p1_led, LOW);
                delay(600);
              }
            }
          }
        }
        digitalWrite(i, LOW);
      }
      direction = 0;
    }
    else
    {
      // to the left
      for (int i = 9; i >= 2; i--)
      {
        digitalWrite(i, HIGH);
        time = millis();
        
        while (millis() < time + 200)
        {
          untimelyPress();
          if (!digitalRead(p2_btn) && digitalRead(p1_led))
          {
            delay(50);
            Serial.println("WIN222");
            p2_pts++;
            Serial.println(p2_pts);
            if (p2_pts == 5)
            {
              victory();
            }
            else
            {
              for (int j = 0; j < p2_pts; j++)
              {
                digitalWrite(p2_led, HIGH);
                delay(400);
                digitalWrite(p2_led, LOW);
                delay(600);
              }
            }
          }
        }
        digitalWrite(i, LOW);
      }
      direction = 1;
    }
  }
}