41 lines
1.1 KiB
C#
41 lines
1.1 KiB
C#
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namespace Hokm.Engine;
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public static class Deck
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{
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public static readonly Suit[] Suits = { Suit.Spades, Suit.Hearts, Suit.Diamonds, Suit.Clubs };
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public static List<Card> Create()
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{
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var deck = new List<Card>(52);
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foreach (var suit in Suits)
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for (int rank = 2; rank <= 14; rank++)
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deck.Add(new Card(suit, rank));
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return deck;
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}
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/// <summary>Fisher–Yates shuffle into a new list.</summary>
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public static List<Card> Shuffle(IReadOnlyList<Card> input, Random rng)
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{
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var arr = input.ToList();
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for (int i = arr.Count - 1; i > 0; i--)
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{
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int j = rng.Next(i + 1);
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(arr[i], arr[j]) = (arr[j], arr[i]);
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}
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return arr;
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}
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public static List<Card> SortHand(IEnumerable<Card> hand)
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{
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static int Order(Suit s) => s switch
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{
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Suit.Spades => 0,
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Suit.Hearts => 1,
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Suit.Clubs => 2,
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Suit.Diamonds => 3,
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_ => 4,
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};
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return hand.OrderBy(c => Order(c.Suit)).ThenByDescending(c => c.Rank).ToList();
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}
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}
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