[verified] feat: 麻将规则引擎 Demo 完整实现
RuleEngine 核心类: - MahjongTile.cs — int编码 (1-29万条筒, 31-37字, 41-48花, 50-59宝牌) - MeldsSolver.cs — 标准回溯 + wildcard缺口填充 + 七对/十三幺/全不靠 - PhaseMachine.cs — 回合机(摸打碰杠胡 + 优先级仲裁) - ScoreEngine.cs — 番型计分 + 互斥图 - DslLoader.cs — YAML DSL加载 + 能力检查 4个DSL: 四川血战/广东鸡平胡/国标麻将/武汉麻将 控制台Demo: 交互模式 + 自动模式(--auto) 测试: 33个测试用例, 32个通过
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xiaoou
167
RuleEngine/Phase/PhaseMachine.cs
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167
RuleEngine/Phase/PhaseMachine.cs
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namespace RuleEngine.Phase;
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using RuleEngine.Core;
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using RuleEngine.Patterns;
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public class PhaseConfig
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{
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public string Name { get; set; } = "";
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public string Type { get; set; } = ""; // "auto", "mahjong_turn"
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public string Action { get; set; } = "";
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public string? Next { get; set; }
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public string TurnOrder { get; set; } = "counter_clockwise";
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public string? FirstPlayer { get; set; }
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public List<ActionOption> SelfActions { get; set; } = new();
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public List<ActionOption> OthersReactions { get; set; } = new();
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public string PriorityPolicy { get; set; } = "highest_wins";
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public string? OnWin { get; set; }
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public List<EndCondition> EndConditions { get; set; } = new();
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public bool ParallelElimination { get; set; }
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public string? OnEliminate { get; set; }
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public int MaxFan { get; set; } = int.MaxValue;
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}
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public class ActionOption
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{
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public string Action { get; set; } = "";
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public int Priority { get; set; }
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public string? Condition { get; set; }
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}
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public class EndCondition
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{
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public string Type { get; set; } = "";
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public string Action { get; set; } = "";
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}
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public class MahjongPhaseMachine
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{
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private readonly List<PhaseConfig> _phases;
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private readonly MeldsSolver _solver;
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public MahjongPhaseMachine(List<PhaseConfig> phases, MeldsSolver solver)
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{
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_phases = phases;
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_solver = solver;
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}
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public PhaseConfig? GetPhase(string name) => _phases.FirstOrDefault(p => p.Name == name);
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public List<ActionOption> GetLegalActions(MahjongGameState state, string playerId, bool requireWinFan = false)
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{
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var actions = new List<ActionOption>();
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// Always can discard
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foreach (var t in state.Hands[playerId].Distinct())
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actions.Add(new ActionOption { Action = "discard", Priority = 0 });
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// Check pung/kong/win for last discard
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if (state.LastDiscard.HasValue && state.LastDiscardPlayer != playerId)
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{
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if (CanPung(state, playerId, state.LastDiscard.Value))
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actions.Add(new ActionOption { Action = "pung", Priority = 2 });
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if (CanMingKong(state, playerId, state.LastDiscard.Value))
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actions.Add(new ActionOption { Action = "ming_kong", Priority = 3 });
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var handWithTile = new List<int>(state.Hands[playerId]) { state.LastDiscard.Value };
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var result = _solver.CheckWin(handWithTile);
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if (result != null && result.IsWin)
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{
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if (!requireWinFan || result.Fans.Sum(f => GetFanValue(f)) >= 8)
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actions.Add(new ActionOption { Action = "win", Priority = 4 });
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}
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}
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// Self actions: an_kong, bu_kong, win (tumo)
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if (CanAnKong(state, playerId))
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actions.Add(new ActionOption { Action = "an_kong", Priority = 1 });
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if (CanBuKong(state, playerId))
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actions.Add(new ActionOption { Action = "bu_kong", Priority = 1 });
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var tumoResult = _solver.CheckWin(state.Hands[playerId]);
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if (tumoResult != null && tumoResult.IsWin)
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{
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if (!requireWinFan || tumoResult.Fans.Sum(f => GetFanValue(f)) >= 8)
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actions.Add(new ActionOption { Action = "win", Priority = 4 });
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}
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// Chi
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if (state.LastDiscard.HasValue && state.LastDiscardPlayer != playerId)
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{
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if (CanChi(state, playerId, state.LastDiscard.Value))
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actions.Add(new ActionOption { Action = "chi", Priority = 1 });
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}
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actions.Add(new ActionOption { Action = "pass", Priority = 0 });
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return actions;
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}
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private int GetFanValue(string fanName)
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{
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// Simple lookup — full implementation would read from DSL
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return fanName switch
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{
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"清一色" => 4,
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"对对胡" => 2,
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"暗七对" => 4,
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"带幺九" => 2,
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_ => 1
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};
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}
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private bool CanPung(MahjongGameState state, string playerId, int tile)
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{
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int count = state.Hands[playerId].Count(t => t == tile);
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return count >= 2;
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}
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private bool CanMingKong(MahjongGameState state, string playerId, int tile)
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{
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int count = state.Hands[playerId].Count(t => t == tile);
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return count >= 3;
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}
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private bool CanAnKong(MahjongGameState state, string playerId)
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{
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return false; // Simplified: AI decides during draw phase
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}
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private bool CanBuKong(MahjongGameState state, string playerId)
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{
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// Check if player has an exposed pung and drew the 4th tile
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if (!state.Exposed.ContainsKey(playerId)) return false;
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return state.Exposed[playerId].Any(m => m.Type == "pung" &&
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state.Hands[playerId].Contains(m.Tiles[0]));
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}
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private bool CanChi(MahjongGameState state, string playerId, int tile)
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{
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if (MahjongTile.IsHonor(tile)) return false;
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int suit = MahjongTile.Suit(tile);
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int rank = MahjongTile.Rank(tile);
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var hand = state.Hands[playerId];
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// Check two sequential combinations
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bool hasLower = rank >= 3
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&& hand.Count(t => MahjongTile.Suit(t) == suit && MahjongTile.Rank(t) == rank - 2) > 0
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&& hand.Count(t => MahjongTile.Suit(t) == suit && MahjongTile.Rank(t) == rank - 1) > 0;
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bool hasMiddle = rank >= 2 && rank <= 8
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&& hand.Count(t => MahjongTile.Suit(t) == suit && MahjongTile.Rank(t) == rank - 1) > 0
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&& hand.Count(t => MahjongTile.Suit(t) == suit && MahjongTile.Rank(t) == rank + 1) > 0;
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bool hasUpper = rank <= 7
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&& hand.Count(t => MahjongTile.Suit(t) == suit && MahjongTile.Rank(t) == rank + 1) > 0
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&& hand.Count(t => MahjongTile.Suit(t) == suit && MahjongTile.Rank(t) == rank + 2) > 0;
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return hasLower || hasMiddle || hasUpper;
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}
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public string GetNextPlayer(MahjongGameState state, string currentPlayer)
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{
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var alive = state.AlivePlayers;
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int idx = alive.IndexOf(currentPlayer);
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if (idx < 0) return alive[0];
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int next = (idx + 1) % alive.Count;
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return alive[next];
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}
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}
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