多轮审查和修复

Assets/Scripts/World/Liquid/WaterDangerState.cs

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+// Assets/Scripts/World/Liquid/WaterDangerState.cs
+
+using BaseGames.Core.Events;
+using BaseGames.Player;
+using UnityEngine;
+
+namespace BaseGames.World.Liquid
+{
+    /// <summary>
+    /// 当玩家进入 Water 类型液体且未解锁游泳能力时，触发溺水倒计时。
+    /// 订阅 EVT_LiquidEntered / EVT_LiquidExited 事件频道。
+    /// </summary>
+    public class WaterDangerState : MonoBehaviour
+    {
+        [SerializeField] private LiquidPhysicsConfigSO _config;
+        [SerializeField] private PlayerStats           _playerStats;       // 检查 Swim 能力
+        [SerializeField] private LiquidEventChannelSO  _onLiquidEntered;   // EVT_LiquidEntered
+        [SerializeField] private LiquidEventChannelSO  _onLiquidExited;    // EVT_LiquidExited
+        [SerializeField] private FloatEventChannelSO   _onDrownProgress;   // 0~1 倒计时进度（HUD 用）
+        [SerializeField] private VoidEventChannelSO    _onPlayerDrowned;   // 触发死亡
+
+        private float _drownTimer;
+        private bool  _isActive;
+        private readonly CompositeDisposable _subs = new();
+
+        private void Awake()
+        {
+            Debug.Assert(_config != null, "[WaterDangerState] _config 未赋值，请在 Inspector 中指定 LiquidPhysicsConfigSO。", this);
+        }
+
+        private void OnEnable()
+        {
+            _onLiquidEntered?.Subscribe(OnEnterLiquid).AddTo(_subs);
+            _onLiquidExited?.Subscribe(OnExitLiquid).AddTo(_subs);
+        }
+
+        private void OnDisable() => _subs.Clear();
+
+        public void OnEnterLiquid(LiquidEvent evt)
+        {
+            if (evt.LiquidType != nameof(LiquidType.Water)) return;
+            if (_playerStats != null && _playerStats.HasAbility(AbilityType.Swim)) return;
+            _isActive   = true;
+            _drownTimer = _config.DrownTime;
+        }
+
+        public void OnExitLiquid(LiquidEvent evt)
+        {
+            _isActive   = false;
+            _drownTimer = _config.DrownTime;
+            _onDrownProgress?.Raise(0f);
+        }
+
+        private void Update()
+        {
+            if (!_isActive) return;
+            _drownTimer -= Time.deltaTime;
+
+            float drownTime = _config.DrownTime;
+            _onDrownProgress?.Raise(1f - (_drownTimer / drownTime));
+
+            if (_drownTimer <= 0f)
+            {
+                _isActive = false;
+                _onPlayerDrowned?.Raise();
+            }
+        }
+    }
+}