54 lines
1.6 KiB
C#
54 lines
1.6 KiB
C#
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using OECS;
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namespace Blackjack;
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/// <summary>
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/// Dealer draws cards until reaching 17 or higher,
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/// then resolves the round result.
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/// </summary>
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public class DealerSystem : ISystem
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{
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public void Run(World world)
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{
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var state = world.ReadSingleton<GameState>();
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if (state.Phase != GamePhase.DealerTurn)
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return;
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ref var mutableState = ref world.GetSingleton<GameState>();
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// Dealer must hit on 16 and below, stand on 17+.
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int dealerTotal = HandUtil.CalculateHand(world, DealerHandTag.Instance);
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while (dealerTotal < 17)
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{
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HitCommand.DrawCard<DealerHand>(world);
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dealerTotal = HandUtil.CalculateHand(world, DealerHandTag.Instance);
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}
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int playerTotal = HandUtil.CalculateHand(world, PlayerHandTag.Instance);
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mutableState.Phase = GamePhase.RoundOver;
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if (dealerTotal > 21)
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{
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mutableState.Result = RoundResult.DealerBust;
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mutableState.Chips += mutableState.CurrentBet * 2;
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}
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else if (playerTotal > dealerTotal)
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{
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mutableState.Result = RoundResult.PlayerWin;
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mutableState.Chips += mutableState.CurrentBet * 2;
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}
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else if (dealerTotal > playerTotal)
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{
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mutableState.Result = RoundResult.DealerWin;
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}
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else
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{
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// Push: return the bet.
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mutableState.Result = RoundResult.Push;
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mutableState.Chips += mutableState.CurrentBet;
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}
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world.MarkModified<GameState>(World.SingletonEntity);
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}
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}
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