npc characters have separate trigger enter and exit areas

Assets/_PROJECT/Scripts/ModeGeneration/NPCs/NPCTriggerArea.cs

@@ -0,0 +1,38 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class NPCTriggerArea : MonoBehaviour
+{
+    public NPCController npcController;
+    public bool isEnter;
+
+    // Start is called before the first frame update
+    void Start()
+    {
+        
+    }
+
+    // Update is called once per frame
+    void Update()
+    {
+        
+    }
+
+    private void OnTriggerEnter(Collider other)
+    {
+        if (isEnter && other.gameObject.tag == "Player Head")
+        {
+
+            npcController.PlayerApproach(other.transform);
+        }
+    }
+
+    private void OnTriggerExit(Collider other)
+    {
+        if (!isEnter && other.gameObject.tag == "Player Head")
+        {
+            npcController.PlayerLeave();
+        }
+    }
+}