int b1 = 13; 
int b2 = 12; 
int b3 = 11; 
int b1State, b2State, b3State;
int randomNum, result, sum; 
int playVal;

void setup() {
	Serial.begin(9600);
	pinMode(b1,INPUT);
	pinMode(b2,INPUT);
	pinMode(b3,INPUT); 
  Serial.println();
  Serial.println("===============================");  
	Serial.println("Stacking Game"); 
  Serial.println();
}

void loop() {
	b1State=digitalRead(b1);
	b2State=digitalRead(b2);
	b3State=digitalRead(b3); 

  if (b1State==HIGH) {
    playVal=1; 
    player();
    computer();
  } else if (b2State==HIGH) {
    playVal=2; 
    player();
    computer();
  } else if (b3State==HIGH) {
    playVal=3; 
    player();
    computer();
  }

}

void player () {
  Serial.println("Player: " + String(playVal)); 
  delay(500); 
  sum += playVal; 
  

  if (sum>11) {
    Serial.println("COMPUTER WINS"); 
    sum=0; 
    setup();
  } else if (sum==11) {
    Serial.println("PLAYER WINS");
    sum=0; 
    setup(); 
  } 
}

void computer () {
  randomSeed(analogRead(0)); 
  
  if (sum<8) {
    randomNum = random(1,4);
  } else {
    randomNum = 11 - sum; 
  }
  
  Serial.println("Computer: " + String(randomNum)); 
  delay(500); 
  sum += randomNum;
  Serial.println("Block: " + String(sum)); 
  Serial.println(); 
  delay(500); 

  if (sum==11) {
    Serial.println("COMPUTER WINS");
    sum=0; 
    setup(); 
  } 
}

void playMore() {
  Serial.println("Still Wanna Play?");
  Serial.println("If Yes, Please press the Green Button?");
  Serial.println("Else, Please press the Red  Button?");

  if (b2State==HIGH) {
    setup(); 
  } else if (b1State==HIGH) {
    Serial.println("Thank you for Playing bitxh ");
  } else {
    Serial.println("Wrong button");
    playMore();
  }


}