BlackJack Ace Value Help needed.

Unity Engine
1

BlackJack Ace Value Help needed.

Im struggling with figuring out how to calculate the Ace value sometimes its 1 sometimes its 11. Once the deal button is clicked the player is dealt 2 cards (card1Value card2Value) these 2 cards are added together and becomes the playersHand. Now if one of these 2 cards is an Ace Im confused with how to give the option for it to be 1 or 11?

1 is the value of the Ace

if(card1Value !=1  card2Value !=1)
    {
    	playersHand += card1Value += card2Value;
    }
    
    //if players first or second card is an ace 
    if(card1Value == 1 || card2Value == 1)
	{
		//if 1st card = 1  2nd card 10 OR 1st card = 10  2nd card = 1 YOU WIN
		if(card1Value == 1  card2Value == 10 || card1Value == 10  card2Value == 1)
		{
			Win();	
		} 
		//if one of the cards is an ace and the other is not
		if(card1Value == 1  card2Value != 1 || card1Value != 1  card2Value == 1)
		{
			optionLow += card1Value += card2Value;
			optionHigh += card1Value += card2Value + 9;
		}
}

Now I can let the user choose optionLow (ace =1) or optionHigh(ace =11). Needs more testing so Im on it, thank you all :slight_smile:

2

Simple:

Always assume that the Ace is 11. When you calculate the sum, check how many cards are an Ace and save the number of Aces.

If the sum exceeds 21 and one of the cards is an Ace, subtract 10. If it’s still over 21 and you have still once ace available, subtract another 10.

public enum CardType {
    Two = 2, // tell it that the first value is a two
    Three, 
    ..., 
    Ten, 
    Ace, // 11
    ...,
    King // 14
}
public struct Card {
    public int Value;
    public CardType Type;

    public Card(CardType type) {
        Type = type;
        int value = (int)type;
        Value = (value>11)?10:value; // for all values higher than 11 (picture cards) assign 10
    }
}

// C# and Linq
List<Card> cards = new List<Card>();
cards.Add(new Card(CardType.Ace));
cards.Add(new Card(CardType.Ace));
cards.Add(new Card(CardType.King));

// Get the number of Aces
int numAces = cards.Where(card => card.Type == CardType.Ace).Count();
// Get the sum, i.e. 32 in this case
int sum = cards.Sum(card => card.Value);

// Before Loop: Sum 32, numAces = 2
// 1st Loop: Sum 22, numAces = 1
// 2nd Loop: Sum 12, numAces = 0
while(sum > 21  numAces > 0) {
    numAce--;
    sum -= 10;
}

if(sum <=21 ) {
   Win()
} else {
   Lose();
}
3

Hi Tseng,

I really appreciate the reply!!! “Thank You” Im trying to work it out right now :slight_smile: and will reply soon.

4

You Are The Man TSENG!!! You Are The Man!

Thank You Sooo Much!