多轮审查和修复

Assets/Scripts/Enemies/Boss/BossBase.cs

@@ -0,0 +1,48 @@
+using UnityEngine;
+using BaseGames.Core.Events;
+
+namespace BaseGames.Enemies
+{
+    /// <summary>
+    /// Boss 敌人基类。扩展 <see cref="EnemyBase"/> 以支持多阶段切换与战斗结束广播。
+    /// 具体 Boss 继承此类并重写 <see cref="EnterPhase"/>。
+    /// </summary>
+    public class BossBase : EnemyBase
+    {
+        [Header("Boss 配置")]
+        [SerializeField] private string                    _bossId;
+        [SerializeField] private BoolEventChannelSO        _onBossFightEnded;
+        [SerializeField] private BossPhaseEventChannelSO   _onBossPhaseChanged;
+
+        public string BossId => _bossId;
+
+        protected int _currentPhase = 0;
+
+        /// <summary>
+        /// 进入指定阶段。广播 <see cref="BossPhaseEvent"/> 供 UI / 音乐系统响应。
+        /// 子类可重写以添加额外过渡逻辑（动画、无敌帧等）。
+        /// </summary>
+        public virtual void EnterPhase(int phase)
+        {
+            _currentPhase = phase;
+            _onBossPhaseChanged?.Raise(new BossPhaseEvent
+            {
+                BossId = _bossId,
+                Phase  = phase,
+            });
+        }
+
+        /// <summary>检查当前 HP 是否低于指定百分比（0~1）。</summary>
+        public bool IsHPBelow(float ratio)
+        {
+            if (_stats == null || _stats.MaxHP <= 0) return false;
+            return (float)_stats.CurrentHP / _stats.MaxHP < ratio;
+        }
+
+        protected override void Die()
+        {
+            base.Die();
+            _onBossFightEnded?.Raise(true);
+        }
+    }
+}