npc characters have separate trigger enter and exit areas

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

@@ -121,27 +121,19 @@ public abstract class NPCController : MonoBehaviour
         currentVoicelineEvent.release();
     }
 
-
-    private void OnTriggerEnter(Collider other)
-    {
-        if (other.gameObject.tag == "Player Head")
-        {
-            playerTransform = other.transform;
-            OnPlayerApproach();
-        }
+    public void PlayerApproach(Transform player) {
+        playerTransform = player;
+        OnPlayerApproach();
     }
 
-    protected virtual void OnPlayerApproach() {}
-
-    private void OnTriggerExit(Collider other)
+    public void PlayerLeave()
     {
-        if (other.gameObject.tag == "Player Head")
-        {
-            playerTransform = null;
-            OnPlayerLeave();
-        }
+        playerTransform = null;
+        OnPlayerLeave();
     }
 
+    protected virtual void OnPlayerApproach() { }
+
     protected virtual void OnPlayerLeave() {}
 
     public void SpeakVoiceLine(int voiceLineId, GameObject emitter = null, float radioAmount = 0f)

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();
+        }
+    }
+}

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

@@ -0,0 +1,11 @@
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