更新视觉训练距离配置

unity/Assets/2.5D Engine/Enemy.prefab

@@ -219,6 +219,7 @@ MonoBehaviour:
     serializedVersion: 2
     m_Bits: 0
   rayOffsetY: 0.5
+  maxSightDistance: 4
   loseSightTime: 3
   listenRange: 15
   bellArriveDistance: 1

unity/Assets/enemy/EnemyAI.cs

@@ -35,6 +35,9 @@ namespace IndianOceanAssets.Engine2_5D
         [Tooltip("射线起点偏移（避免从地面发射）")]
         [SerializeField] private float rayOffsetY = 0.5f;
 
+        [Tooltip("最大视野距离（超过此距离看不到玩家）")]
+        [SerializeField] private float maxSightDistance = 15f;
+
         [Header("脱离计时")]
         [Tooltip("玩家脱离视线后，继续追击的时间（秒）")]
         [SerializeField] private float loseSightTime = 3f;
@@ -255,18 +258,24 @@ namespace IndianOceanAssets.Engine2_5D
         }
 
         /// <summary>
-        /// 检测是否能看到玩家（射线检测）
+        /// 检测是否能看到玩家（射线检测 + 距离检测）
         /// </summary>
         private bool CanSeePlayer()
         {
             if (playerTarget == null) return false;
             
-            // 射线起点（稍微抬高，避免从地面发射）
+            // 计算距离
             Vector3 rayStart = transform.position + Vector3.up * rayOffsetY;
             Vector3 rayEnd = playerTarget.position + Vector3.up * rayOffsetY;
             Vector3 dir = rayEnd - rayStart;
             float dist = dir.magnitude;
             
+            // 距离检测：超过最大视野距离看不到玩家
+            if (dist > maxSightDistance)
+            {
+                return false;
+            }
+            
             // 调试：在Scene视图中绘制射线
             Debug.DrawLine(rayStart, rayEnd, CanSeePlayerDebugColor());
             
@@ -351,6 +360,10 @@ namespace IndianOceanAssets.Engine2_5D
             Gizmos.color = stateColor;
             Gizmos.DrawWireSphere(transform.position, 0.5f);
             
+            // 绘制最大视野距离（绿色线框）
+            Gizmos.color = new Color(0f, 1f, 0f, 0.2f);
+            Gizmos.DrawWireSphere(transform.position, maxSightDistance);
+            
             // 绘制聆听范围
             Gizmos.color = new Color(0f, 0.85f, 1f, 0.3f);
             Gizmos.DrawWireSphere(transform.position, listenRange);