The Deck
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Cards/Card.cs
A small immutable value type representing a runtime card by storing an index into a DeckDefinition's face list. It exposes the FaceIndex, can resolve to the CardFace via a DeckDefinition, and implements equality and hash code based on the index.
namespace CardGames;
/// <summary>
/// A card at runtime: nothing but an index into its <see cref="DeckDefinition"/>'s face list.
/// Tiny and trivially networkable, just this int.
/// </summary>
public readonly struct Card : IEquatable<Card>
{
public int FaceIndex { get; }
public Card( int faceIndex ) => FaceIndex = faceIndex;
public CardFace Resolve( DeckDefinition deck ) => deck.Faces[FaceIndex];
public bool Equals( Card other ) => FaceIndex == other.FaceIndex;
public override bool Equals( object obj ) => obj is Card c && Equals( c );
public override int GetHashCode() => FaceIndex;
}