인터랙션 시스템 및 터널 기능 생성

Assets/Scripts/TunnelNode.cs

@@ -0,0 +1,42 @@
+using UnityEngine;
+
+public class TunnelNode : MonoBehaviour, IInteractable
+{
+    public TunnelNode connectedNode;
+    public TunnelNode otherEndOfThisSegment;
+    public float detectionRadius = 0.5f;
+    public LayerMask tunnelLayer;
+
+    // --- IInteractable 구현부 ---
+    public void Interact(GameObject user)
+    {
+        // 상호작용한 플레이어의 TunnelTraveler를 찾아 이동 시작!
+        TunnelTraveler traveler = user.GetComponent<TunnelTraveler>();
+        if (traveler != null)
+        {
+            traveler.StartTravel(this);
+        }
+    }
+
+    public string GetInteractionText()
+    {
+        return "통로 진입";
+    }
+    // ----------------------------
+
+    void Start() => FindNeighborNode();
+
+    public void FindNeighborNode()
+    {
+        Collider[] colliders = Physics.OverlapSphere(transform.position, detectionRadius, tunnelLayer);
+        foreach (var col in colliders)
+        {
+            TunnelNode neighbor = col.GetComponent<TunnelNode>();
+            if (neighbor != null && neighbor != this && neighbor != otherEndOfThisSegment)
+            {
+                connectedNode = neighbor;
+                break;
+            }
+        }
+    }
+}