多轮审查和修复

Assets/Scripts/World/DirectionalDestructible.cs

@@ -0,0 +1,55 @@
+using BaseGames.Combat;
+using UnityEngine;
+
+namespace BaseGames.World
+{
+    /// <summary>
+    /// 单向可破坏物。在 DestructibleTile 基础上增加攻击方向校验。
+    /// 使用 AttackSide.Any 等效于普通 DestructibleTile。
+    /// </summary>
+    public class DirectionalDestructible : DestructibleTile
+    {
+        public enum AttackSide { Left, Right, Top, Bottom, Any }
+
+        [SerializeField] private AttackSide _validAttackSide = AttackSide.Any;
+
+        protected override bool CheckDestroyCondition(DamageInfo info)
+        {
+            if (_validAttackSide == AttackSide.Any)
+                return base.CheckDestroyCondition(info);
+
+            var dir = (info.SourcePosition - (Vector2)transform.position).normalized;
+
+            bool valid = _validAttackSide switch
+            {
+                AttackSide.Left   => dir.x < -0.5f,
+                AttackSide.Right  => dir.x >  0.5f,
+                AttackSide.Top    => dir.y >  0.5f,
+                AttackSide.Bottom => dir.y < -0.5f,
+                _                 => true
+            };
+
+            return valid && base.CheckDestroyCondition(info);
+        }
+
+#if UNITY_EDITOR
+        private void OnDrawGizmos()
+        {
+            Vector2 arrow = _validAttackSide switch
+            {
+                AttackSide.Left   => Vector2.left,
+                AttackSide.Right  => Vector2.right,
+                AttackSide.Top    => Vector2.up,
+                AttackSide.Bottom => Vector2.down,
+                _                 => Vector2.zero
+            };
+
+            if (arrow == Vector2.zero) return;
+
+            Gizmos.color = new Color(1f, 0.5f, 0f, 0.9f);
+            var origin = (Vector2)transform.position;
+            Gizmos.DrawLine(origin, origin + arrow * 0.8f);
+        }
+#endif
+    }
+}