Included pathway component to edit PathwayConfigSO

UOP1_Project/Assets/Prefabs/Characters/SlimeCritter_Base.prefab

   _getHitEffectSO: {fileID: 11400000, guid: efe1f84589f6f1f47a7a10a1a215e843, type: 2}
   _mainMeshRenderer: {fileID: 7464116941563462636}
   _droppableRewardSO: {fileID: 11400000, guid: 6158158d6ef9a3d47827f7851295bcef, type: 2}
+--- !u!114 &4729545407786248701
+MonoBehaviour:
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+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 8687264390989375961}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: ac26da34fd58af544a84bf1977bcc424, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
+  _npcMovementConfig: {fileID: 11400000, guid: ae318779135f76f4d8c1213cf19d2312, type: 2}
+  _channel: {fileID: 0}
 --- !u!1001 &2135821800440209491
 PrefabInstance:
   m_ObjectHideFlags: 0

UOP1_Project/Assets/ScriptableObjects/StateMachine/Config/NPCPathwayConfig.asset

   m_Enabled: 1
   m_EditorHideFlags: 0
   m_Script: {fileID: 11500000, guid: 76542500a512494489526e9bcfd3a1b8, type: 3}
-  m_Name: PathwayConfig
+  m_Name: NPCPathwayConfig
-  _waypoints: []
-  _stopDuration: 0
-  _speed: 0
+  _stopDuration: 0.5
+  _speed: 1
+  Waypoints:
+  - {x: 3.4739745, y: 0.033730388, z: 0.6266351}
+  - {x: 12.061079, y: 0.15954088, z: 9.731606}
+  - {x: -6.2887483, y: 0.033730388, z: 7.971367}
+  - {x: -15.76542, y: 0.033730388, z: -0.2936163}
+  - {x: -11.600259, y: 0.033730388, z: -4.42002}
+  _pathwayEditorColor: {r: 0, g: 1, b: 1, a: 1}

UOP1_Project/Assets/ScriptableObjects/StateMachine/Config/NPCPathwayConfig.asset.meta

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-guid: 3fd89e57021cbbe41a7c94dbf80a103e
+guid: ae318779135f76f4d8c1213cf19d2312
 NativeFormatImporter:
   externalObjects: {}
   mainObjectFileID: 11400000

UOP1_Project/Assets/Scripts/Characters/Config/PathwayConfigSO.cs

 [CreateAssetMenu(fileName = "PathwayConfig", menuName = "EntityConfig/Pathway Config")]
 public class PathwayConfigSO : NPCMovementConfigSO
 {
-	[Tooltip("Pathway waypoints")]
-	[SerializeField] private List<Vector3> _waypoints;
+	[HideInInspector] public List<Vector3> Waypoints;
-	public List<Vector3> Waypoints => _waypoints;
+#if UNITY_EDITOR
+	[SerializeField]
+	private Color _pathwayEditorColor = Color.cyan;
+	private int _textSize = 10;
+	private Color _textColor = Color.white;
+
+	public const string FIELD_LABEL = "Point ";
+	public const string TITLE_LABEL = "Waypoints";
+
+	public Color LineColor { get => _pathwayEditorColor; }
+	public Color TextColor { get => _textColor; }
+	public int TextSize { get => _textSize; }
+
+#endif
 }

UOP1_Project/Assets/Scripts/Editor/Pathway/PathwayEditor.cs

 using UnityEditorInternal;
 
 
-[CustomEditor(typeof(Pathway))]
+[CustomEditor(typeof(PathwayConfigSO))]
-	private Pathway _pathway;
+	private PathwayConfigSO _pathway;
-	public void OnSceneGUI()
+	public void OnSceneGUI(SceneView sceneView)
+		PathwayGizmos.DrawHandlesPath(_pathway);
 	}
 
 	public override void OnInspectorGUI()
 		_reorderableList.onRemoveCallback += RemoveItem;
 		_reorderableList.onSelectCallback += SelectItem;
 		_reorderableList.onChangedCallback += ListModified;
-		_pathway = (target as Pathway);
+		_pathway = (target as PathwayConfigSO);
+		SceneView.duringSceneGui += this.OnSceneGUI;
 	}
 
 	private void OnDisable()
 		_reorderableList.onRemoveCallback -= RemoveItem;
 		_reorderableList.onSelectCallback -= SelectItem;
 		_reorderableList.onChangedCallback -= ListModified;
+		SceneView.duringSceneGui -= this.OnSceneGUI;
 	}
 
 	private void DrawHeader(Rect rect)
 	{
 		int index = list.index;
 
-		if (index > -1 && list.serializedProperty.arraySize >= 1)
+		if (index < 0)
+			index = list.serializedProperty.arraySize - 1;
+		}
+
+		if (list.serializedProperty.arraySize >= 1)
+		{
+			Vector3 previous = (list.serializedProperty.GetArrayElementAtIndex(index).vector3Value + list.serializedProperty.GetArrayElementAtIndex((index + 1) % list.serializedProperty.arraySize).vector3Value) / 2;
-			Vector3 previous = list.serializedProperty.GetArrayElementAtIndex(index).vector3Value;
-			list.serializedProperty.GetArrayElementAtIndex(index + 1).vector3Value = new Vector3(previous.x + 2, previous.y, previous.z + 2);
+			list.serializedProperty.GetArrayElementAtIndex(index + 1).vector3Value = new Vector3(previous.x, previous.y, previous.z);
+			Vector3 previous = Vector3.zero;
-			Vector3 previous = _pathway.transform.position;
-			list.serializedProperty.GetArrayElementAtIndex(list.serializedProperty.arraySize - 1).vector3Value = new Vector3(previous.x + 2, previous.y, previous.z + 2);
+			list.serializedProperty.GetArrayElementAtIndex(list.serializedProperty.arraySize - 1).vector3Value = new Vector3(previous.x, previous.y, previous.z);
 		}
 
 		list.index++;

UOP1_Project/Assets/Scripts/Editor/Pathway/PathwayGizmos.cs

 using UnityEngine;
 using UnityEditor;
+using UnityEngine.AI;
-	[DrawGizmo(GizmoType.Selected)]
-	private static void DrawGizmosSelected(Pathway pathway, GizmoType gizmoType)
-	{
-
-		DrawHandlesPath(pathway);
-	}
-
-	private static void DrawElements(Pathway pathway, List<Vector3> path, int index)
-	{
-		GUIStyle style = new GUIStyle();
-		Vector3 textHeight = Vector3.up;
-
-		style.normal.textColor = pathway.TextColor;
-		style.fontSize = pathway.TextSize;
-
-		Handles.Label(path[index] + textHeight, index.ToString(), style);
-	}
-
-	private static void DrawHandlesPath(Pathway pathway)
+	public static void DrawHandlesPath(PathwayConfigSO pathway)
-
-		for (int i = 0; i < pathway.Waypoints.Count; i++)
+		if (pathway.Waypoints.Count > 1)
-			if (i != 0 && pathway.Waypoints.Count > 1)
+			for (int index = 0; index < pathway.Waypoints.Count && pathway.Waypoints.Count > 1; index++)
-				DrawElements(pathway, pathway.Waypoints, i);
+				int nextIndex = (index + 1) % pathway.Waypoints.Count;
+				DrawElements(pathway, pathway.Waypoints, index);
+				List<Vector3> navMeshPath = new List<Vector3>();
+				NavMeshPath navPath = new NavMeshPath();
+				NavMesh.CalculatePath(pathway.Waypoints[index], pathway.Waypoints[nextIndex], NavMesh.AllAreas, navPath);
-					Handles.DrawDottedLine(pathway.Waypoints[i - 1], pathway.Waypoints[i], 2);
+					for (int j = 0; j < navPath.corners.Length - 1; j++)
+					{
+						Handles.DrawDottedLine(navPath.corners[j], navPath.corners[j + 1], 2);
+					}
-
+	}
-		if (pathway.Waypoints.Count > 2)
-		{
-			using (new Handles.DrawingScope(pathway.LineColor))
-			{
-				Handles.DrawDottedLine(pathway.Waypoints[0], pathway.Waypoints[pathway.Waypoints.Count - 1], 2);
-			}
-		}
+	private static void DrawElements(PathwayConfigSO pathway, List<Vector3> path, int index)
+	{
+		GUIStyle style = new GUIStyle();
+		Vector3 textHeight = Vector3.up;
+
+		style.normal.textColor = pathway.TextColor;
+		style.fontSize = pathway.TextSize;
+		Handles.Label(path[index] + textHeight, index.ToString(), style);
-
 }

UOP1_Project/Assets/Scripts/Editor/Pathway/PathwayHandles.cs

 using UnityEngine;
 using UnityEditor;
-
+using UnityEngine.AI;
-	private Pathway _pathway;
+	private PathwayConfigSO _pathway;
-	public PathwayHandles(Pathway pathway)
+	public PathwayHandles(PathwayConfigSO pathway)
 	{
 		_pathway = pathway;
 	}
 		for (int i = 0; i < _pathway.Waypoints.Count; i++)
 		{
 			_pathway.Waypoints[i] = Handles.PositionHandle(_pathway.Waypoints[i], Quaternion.identity);
+		}
+		for (int i = 0; i < _pathway.Waypoints.Count; i++)
+		{
+			NavMesh.SamplePosition(_pathway.Waypoints[i], out NavMeshHit hit, 99.0f, NavMesh.AllAreas);
+			_pathway.Waypoints[i] = hit.position;
 		}
 	}