PathFinding done

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Assets/Scripts/Enemy/EnemyPathFinding.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.AI;
+
+public class EnemyPathFinding : MonoBehaviour
+{
+    [SerializeField] private Transform target;
+
+    NavMeshAgent agent;
+    private void Start()
+    {
+        agent = GetComponent<NavMeshAgent>();
+        agent.updateRotation = false;
+        agent.updateUpAxis = false;
+    }
+    private void Update()
+    {
+        agent.SetDestination(target.position);
+    }
+}

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Assets/Scripts/PathFinding/LICENSE

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+MIT License
+
+Copyright (c) 2019 h8man
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

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Assets/Scripts/PathFinding/NavMeshComponents/Editor.meta

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Assets/Scripts/PathFinding/NavMeshComponents/Editor/AgentOverride2dEditor.cs

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+using NavMeshPlus.Extensions;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using UnityEditor;
+
+namespace NavMeshPlus.Editors.Extensions
+{
+    [CanEditMultipleObjects]
+    [CustomEditor(typeof(AgentOverride2d))]
+    internal class AgentOverride2dEditor : Editor
+    {
+        //SerializedProperty m_OverrideByGrid;
+        //SerializedProperty m_UseMeshPrefab;
+        //SerializedProperty m_CompressBounds;
+        //SerializedProperty m_OverrideVector;
+        void OnEnable()
+        {
+            //m_OverrideByGrid = serializedObject.FindProperty("m_OverrideByGrid");
+            //m_UseMeshPrefab = serializedObject.FindProperty("m_UseMeshPrefab");
+            //m_CompressBounds = serializedObject.FindProperty("m_CompressBounds");
+            //m_OverrideVector = serializedObject.FindProperty("m_OverrideVector");
+        }
+
+        public override void OnInspectorGUI()
+        {
+            serializedObject.Update();
+
+            var agent = target as AgentOverride2d;
+            EditorGUILayout.LabelField("Agent Override", agent.agentOverride?.GetType().Name);
+        }
+    }
+}

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Assets/Scripts/PathFinding/NavMeshComponents/Editor/CollectSources2dEditor.cs

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+using UnityEngine.AI;
+using UnityEngine;
+using UnityEditor;
+using NavMeshPlus.Extensions;
+
+namespace NavMeshPlus.Editors.Extensions
+{
+    [CanEditMultipleObjects]
+    [CustomEditor(typeof(CollectSources2d))]
+    internal class CollectSources2dEditor: Editor
+    {
+        SerializedProperty m_OverrideByGrid;
+        SerializedProperty m_UseMeshPrefab;
+        SerializedProperty m_CompressBounds;
+        SerializedProperty m_OverrideVector;
+        void OnEnable()
+        {
+            m_OverrideByGrid = serializedObject.FindProperty("m_OverrideByGrid");
+            m_UseMeshPrefab = serializedObject.FindProperty("m_UseMeshPrefab");
+            m_CompressBounds = serializedObject.FindProperty("m_CompressBounds");
+            m_OverrideVector = serializedObject.FindProperty("m_OverrideVector");
+        }
+
+        public override void OnInspectorGUI()
+        {
+            serializedObject.Update();
+    
+            var surf = target as CollectSources2d;
+
+            EditorGUILayout.PropertyField(m_OverrideByGrid);
+            using (new EditorGUI.DisabledScope(!m_OverrideByGrid.boolValue))
+            {
+                EditorGUI.indentLevel++;
+                EditorGUILayout.PropertyField(m_UseMeshPrefab);
+                EditorGUI.indentLevel--;
+            }
+            EditorGUILayout.PropertyField(m_CompressBounds);
+            EditorGUILayout.PropertyField(m_OverrideVector);
+
+            EditorGUILayout.Space();
+
+            serializedObject.ApplyModifiedProperties();
+
+            using (new EditorGUI.DisabledScope(Application.isPlaying))
+            {
+                GUILayout.BeginHorizontal();
+                if (GUILayout.Button(new GUIContent("Rotate Surface to XY", "Rotates Surface along XY plane to face toward standard 2d camera.")))
+                {
+                    foreach (CollectSources2d item in targets)
+                    {
+                        item.transform.rotation = Quaternion.Euler(-90f, 0f, 0f);
+                    }
+                }
+                if (GUILayout.Button(new GUIContent("Tilt Surface", "If your agent get stuck on vertical movement it may help to solve the issue. This will tilt Surface to -89.98. It may impact baking and navigation.")))
+                {
+                    foreach (CollectSources2d item in targets)
+                    {
+                        item.transform.rotation = Quaternion.Euler(-89.98f, 0f, 0f);
+                    }
+                }
+                GUILayout.EndHorizontal();
+                foreach (CollectSources2d navSurface in targets)
+                {
+                    if (!Mathf.Approximately(navSurface.transform.eulerAngles.x, 270.0198f) && !Mathf.Approximately(navSurface.transform.eulerAngles.x, 270f))
+                    {
+                        EditorGUILayout.HelpBox("NavMeshSurface is not rotated respectively to (x-90;y0;z0). Apply rotation unless intended.", MessageType.Warning);
+                    }
+                }
+            }
+        }
+    }
+
+}

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Assets/Scripts/PathFinding/NavMeshComponents/Editor/CollectSourcesCache2dEditor.cs

@@ -0,0 +1,42 @@
+using UnityEngine.AI;
+using UnityEngine;
+using UnityEditor;
+using NavMeshPlus.Extensions;
+
+namespace NavMeshPlus.Editors.Extensions
+{
+    [CanEditMultipleObjects]
+    [CustomEditor(typeof(CollectSourcesCache2d))]
+    internal class CollectSourcesCache2dEditor : Editor
+    {
+
+        public override void OnInspectorGUI()
+        {
+            serializedObject.Update();
+    
+            var surf = target as CollectSourcesCache2d;
+
+            serializedObject.ApplyModifiedProperties();
+            using (new EditorGUI.DisabledScope(!Application.isPlaying))
+            {
+                GUILayout.BeginHorizontal();
+                GUILayout.Label("Sources:");
+                if (Application.isPlaying)
+                {
+                    GUILayout.Label(surf.SourcesCount.ToString());
+                    GUILayout.Label("Cached:");
+                    GUILayout.Label(surf.CahcheCount.ToString());
+                }
+                GUILayout.EndHorizontal();
+                GUILayout.BeginHorizontal();
+                GUILayout.Label("Actions:");
+                if (GUILayout.Button("Update Mesh"))
+                {
+                    surf.UpdateNavMesh();
+                }
+                GUILayout.EndHorizontal();
+            }
+        }
+    }
+
+}

Assets/Scripts/PathFinding/NavMeshComponents/Editor/CollectSourcesCache2dEditor.cs.meta

@@ -0,0 +1,11 @@
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Assets/Scripts/PathFinding/NavMeshComponents/Editor/NavMeshAgentAttributePropertyDrawer.cs

@@ -0,0 +1,21 @@
+using UnityEditor;
+using UnityEngine;
+using NavMeshPlus.Extensions;
+using NavMeshPlus.Editors.Components;
+
+//***********************************************************************************
+// Contributed by author jl-randazzo github.com/jl-randazzo
+//***********************************************************************************
+namespace NavMeshPlus.Editors.Extensions
+{
+    [CustomPropertyDrawer(typeof(NavMeshAgentAttribute))]
+    public class NavMeshAgentAttributePropertyDrawer : PropertyDrawer
+    {
+        public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
+        {
+            NavMeshComponentsGUIUtility.AgentTypePopup(position, label.text, property);
+        }
+
+        public override float GetPropertyHeight(SerializedProperty property, GUIContent label) => NavMeshComponentsGUIUtility.IsAgentSelectionValid(property) ? 20 : 40;
+    }
+}

Assets/Scripts/PathFinding/NavMeshComponents/Editor/NavMeshAgentAttributePropertyDrawer.cs.meta

@@ -0,0 +1,11 @@
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Assets/Scripts/PathFinding/NavMeshComponents/Editor/NavMeshAreaAttributePropertyDrawer.cs

@@ -0,0 +1,21 @@
+using UnityEditor;
+using UnityEngine;
+using NavMeshPlus.Extensions;
+using NavMeshPlus.Editors.Components;
+
+//***********************************************************************************
+// Contributed by author jl-randazzo github.com/jl-randazzo
+//***********************************************************************************
+namespace NavMeshPlus.Editors.Extensions
+{
+    [CustomPropertyDrawer(typeof(NavMeshAreaAttribute))]
+    public class NavMeshAreaAttributePropertyDrawer : PropertyDrawer
+    {
+        public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
+        {
+            NavMeshComponentsGUIUtility.AreaPopup(position, label.text, property);
+        }
+
+        public override float GetPropertyHeight(SerializedProperty property, GUIContent label) => 20;
+    }
+}

Assets/Scripts/PathFinding/NavMeshComponents/Editor/NavMeshAreaAttributePropertyDrawer.cs.meta

@@ -0,0 +1,11 @@
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Assets/Scripts/PathFinding/NavMeshComponents/Editor/NavMeshAssetManager.cs

@@ -0,0 +1,337 @@
+using System.Collections.Generic;
+using System.IO;
+using UnityEditor.Experimental.SceneManagement;
+using UnityEditor.SceneManagement;
+using UnityEngine.AI;
+using UnityEngine;
+using NavMeshPlus.Extensions;
+using UnityEditor;
+using NavMeshPlus.Components;
+
+namespace NavMeshPlus.Editors.Components
+{
+    public class NavMeshAssetManager : ScriptableSingleton<NavMeshAssetManager>
+    {
+        internal struct AsyncBakeOperation
+        {
+            public NavMeshSurface surface;
+            public NavMeshData bakeData;
+            public AsyncOperation bakeOperation;
+        }
+
+        List<AsyncBakeOperation> m_BakeOperations = new List<AsyncBakeOperation>();
+        internal List<AsyncBakeOperation> GetBakeOperations() { return m_BakeOperations; }
+
+        struct SavedPrefabNavMeshData
+        {
+            public NavMeshSurface surface;
+            public NavMeshData navMeshData;
+        }
+
+        List<SavedPrefabNavMeshData> m_PrefabNavMeshDataAssets = new List<SavedPrefabNavMeshData>();
+
+        static string GetAndEnsureTargetPath(NavMeshSurface surface)
+        {
+            // Create directory for the asset if it does not exist yet.
+            var activeScenePath = surface.gameObject.scene.path;
+
+            var targetPath = "Assets";
+            if (!string.IsNullOrEmpty(activeScenePath))
+            {
+                targetPath = Path.Combine(Path.GetDirectoryName(activeScenePath), Path.GetFileNameWithoutExtension(activeScenePath));
+            }
+            else
+            {
+                var prefabStage = PrefabStageUtility.GetPrefabStage(surface.gameObject);
+                var isPartOfPrefab = prefabStage != null && prefabStage.IsPartOfPrefabContents(surface.gameObject);
+
+                if (isPartOfPrefab)
+                {
+#if UNITY_2020_1_OR_NEWER
+                    var assetPath = prefabStage.assetPath;
+#else
+                    var assetPath = prefabStage.prefabAssetPath;
+#endif
+                    if (!string.IsNullOrEmpty(assetPath))
+                    {
+                        var prefabDirectoryName = Path.GetDirectoryName(assetPath);
+                        if (!string.IsNullOrEmpty(prefabDirectoryName))
+                            targetPath = prefabDirectoryName;
+                    }
+                }
+            }
+            if (!Directory.Exists(targetPath))
+                Directory.CreateDirectory(targetPath);
+            return targetPath;
+        }
+
+        static void CreateNavMeshAsset(NavMeshSurface surface)
+        {
+            var targetPath = GetAndEnsureTargetPath(surface);
+
+            var combinedAssetPath = Path.Combine(targetPath, "NavMesh-" + surface.name + ".asset");
+            combinedAssetPath = AssetDatabase.GenerateUniqueAssetPath(combinedAssetPath);
+            AssetDatabase.CreateAsset(surface.navMeshData, combinedAssetPath);
+        }
+
+        NavMeshData GetNavMeshAssetToDelete(NavMeshSurface navSurface)
+        {
+            if (PrefabUtility.IsPartOfPrefabInstance(navSurface) && !PrefabUtility.IsPartOfModelPrefab(navSurface))
+            {
+                // Don't allow deleting the asset belonging to the prefab parent
+                var parentSurface = PrefabUtility.GetCorrespondingObjectFromSource(navSurface) as NavMeshSurface;
+                if (parentSurface && navSurface.navMeshData == parentSurface.navMeshData)
+                    return null;
+            }
+
+            // Do not delete the NavMeshData asset referenced from a prefab until the prefab is saved
+            var prefabStage = PrefabStageUtility.GetPrefabStage(navSurface.gameObject);
+            var isPartOfPrefab = prefabStage != null && prefabStage.IsPartOfPrefabContents(navSurface.gameObject);
+            if (isPartOfPrefab && IsCurrentPrefabNavMeshDataStored(navSurface))
+                return null;
+
+            return navSurface.navMeshData;
+        }
+
+        void ClearSurface(NavMeshSurface navSurface)
+        {
+            var hasNavMeshData = navSurface.navMeshData != null;
+            StoreNavMeshDataIfInPrefab(navSurface);
+
+            var assetToDelete = GetNavMeshAssetToDelete(navSurface);
+            navSurface.RemoveData();
+
+            if (hasNavMeshData)
+            {
+                SetNavMeshData(navSurface, null);
+                EditorSceneManager.MarkSceneDirty(navSurface.gameObject.scene);
+            }
+
+            if (assetToDelete)
+                AssetDatabase.DeleteAsset(AssetDatabase.GetAssetPath(assetToDelete));
+        }
+
+        public void StartBakingSurfaces(UnityEngine.Object[] surfaces)
+        {
+            // Remove first to avoid double registration of the callback
+            EditorApplication.update -= UpdateAsyncBuildOperations;
+            EditorApplication.update += UpdateAsyncBuildOperations;
+
+            foreach (NavMeshSurface surf in surfaces)
+            {
+                StoreNavMeshDataIfInPrefab(surf);
+
+                var oper = new AsyncBakeOperation();
+
+                oper.bakeData = InitializeBakeData(surf);
+                oper.bakeOperation = surf.UpdateNavMesh(oper.bakeData);
+                oper.surface = surf;
+
+                m_BakeOperations.Add(oper);
+            }
+        }
+
+        static NavMeshData InitializeBakeData(NavMeshSurface surface)
+        {
+            var emptySources = new List<NavMeshBuildSource>();
+            var emptyBounds = new Bounds();
+            return UnityEngine.AI.NavMeshBuilder.BuildNavMeshData(surface.GetBuildSettings(), emptySources, emptyBounds
+                , surface.transform.position, surface.transform.rotation);
+        }
+
+        void UpdateAsyncBuildOperations()
+        {
+            foreach (var oper in m_BakeOperations)
+            {
+                if (oper.surface == null || oper.bakeOperation == null)
+                    continue;
+
+                if (oper.bakeOperation.isDone)
+                {
+                    var surface = oper.surface;
+                    var delete = GetNavMeshAssetToDelete(surface);
+                    if (delete != null)
+                        AssetDatabase.DeleteAsset(AssetDatabase.GetAssetPath(delete));
+
+                    surface.RemoveData();
+                    SetNavMeshData(surface, oper.bakeData);
+
+                    if (surface.isActiveAndEnabled)
+                        surface.AddData();
+                    CreateNavMeshAsset(surface);
+                    EditorSceneManager.MarkSceneDirty(surface.gameObject.scene);
+                }
+            }
+            m_BakeOperations.RemoveAll(o => o.bakeOperation == null || o.bakeOperation.isDone);
+            if (m_BakeOperations.Count == 0)
+                EditorApplication.update -= UpdateAsyncBuildOperations;
+        }
+
+        public bool IsSurfaceBaking(NavMeshSurface surface)
+        {
+            if (surface == null)
+                return false;
+
+            foreach (var oper in m_BakeOperations)
+            {
+                if (oper.surface == null || oper.bakeOperation == null)
+                    continue;
+
+                if (oper.surface == surface)
+                    return true;
+            }
+
+            return false;
+        }
+
+        public void ClearSurfaces(UnityEngine.Object[] surfaces)
+        {
+            foreach (NavMeshSurface s in surfaces)
+                ClearSurface(s);
+        }
+
+        static void SetNavMeshData(NavMeshSurface navSurface, NavMeshData navMeshData)
+        {
+            var so = new SerializedObject(navSurface);
+            var navMeshDataProperty = so.FindProperty("m_NavMeshData");
+            navMeshDataProperty.objectReferenceValue = navMeshData;
+            so.ApplyModifiedPropertiesWithoutUndo();
+        }
+
+        void StoreNavMeshDataIfInPrefab(NavMeshSurface surfaceToStore)
+        {
+            var prefabStage = PrefabStageUtility.GetPrefabStage(surfaceToStore.gameObject);
+            var isPartOfPrefab = prefabStage != null && prefabStage.IsPartOfPrefabContents(surfaceToStore.gameObject);
+            if (!isPartOfPrefab)
+                return;
+
+            // check if data has already been stored for this surface
+            foreach (var storedAssetInfo in m_PrefabNavMeshDataAssets)
+                if (storedAssetInfo.surface == surfaceToStore)
+                    return;
+
+            if (m_PrefabNavMeshDataAssets.Count == 0)
+            {
+                PrefabStage.prefabSaving -= DeleteStoredNavMeshDataAssetsForOwnedSurfaces;
+                PrefabStage.prefabSaving += DeleteStoredNavMeshDataAssetsForOwnedSurfaces;
+
+                PrefabStage.prefabStageClosing -= ForgetUnsavedNavMeshDataChanges;
+                PrefabStage.prefabStageClosing += ForgetUnsavedNavMeshDataChanges;
+            }
+
+            var isDataOwner = true;
+            if (PrefabUtility.IsPartOfPrefabInstance(surfaceToStore) && !PrefabUtility.IsPartOfModelPrefab(surfaceToStore))
+            {
+                var basePrefabSurface = PrefabUtility.GetCorrespondingObjectFromSource(surfaceToStore) as NavMeshSurface;
+                isDataOwner = basePrefabSurface == null || surfaceToStore.navMeshData != basePrefabSurface.navMeshData;
+            }
+            m_PrefabNavMeshDataAssets.Add(new SavedPrefabNavMeshData { surface = surfaceToStore, navMeshData = isDataOwner ? surfaceToStore.navMeshData : null });
+        }
+
+        bool IsCurrentPrefabNavMeshDataStored(NavMeshSurface surface)
+        {
+            if (surface == null)
+                return false;
+
+            foreach (var storedAssetInfo in m_PrefabNavMeshDataAssets)
+            {
+                if (storedAssetInfo.surface == surface)
+                    return storedAssetInfo.navMeshData == surface.navMeshData;
+            }
+
+            return false;
+        }
+
+        void DeleteStoredNavMeshDataAssetsForOwnedSurfaces(GameObject gameObjectInPrefab)
+        {
+            // Debug.LogFormat("DeleteStoredNavMeshDataAsset() when saving prefab {0}", gameObjectInPrefab.name);
+
+            var surfaces = gameObjectInPrefab.GetComponentsInChildren<NavMeshSurface>(true);
+            foreach (var surface in surfaces)
+                DeleteStoredPrefabNavMeshDataAsset(surface);
+        }
+
+        void DeleteStoredPrefabNavMeshDataAsset(NavMeshSurface surface)
+        {
+            for (var i = m_PrefabNavMeshDataAssets.Count - 1; i >= 0; i--)
+            {
+                var storedAssetInfo = m_PrefabNavMeshDataAssets[i];
+                if (storedAssetInfo.surface == surface)
+                {
+                    var storedNavMeshData = storedAssetInfo.navMeshData;
+                    if (storedNavMeshData != null && storedNavMeshData != surface.navMeshData)
+                    {
+                        var assetPath = AssetDatabase.GetAssetPath(storedNavMeshData);
+                        AssetDatabase.DeleteAsset(assetPath);
+                    }
+
+                    m_PrefabNavMeshDataAssets.RemoveAt(i);
+                    break;
+                }
+            }
+
+            if (m_PrefabNavMeshDataAssets.Count == 0)
+            {
+                PrefabStage.prefabSaving -= DeleteStoredNavMeshDataAssetsForOwnedSurfaces;
+                PrefabStage.prefabStageClosing -= ForgetUnsavedNavMeshDataChanges;
+            }
+        }
+
+        void ForgetUnsavedNavMeshDataChanges(PrefabStage prefabStage)
+        {
+            // Debug.Log("On prefab closing - forget about this object's surfaces and stop caring about prefab saving");
+
+            if (prefabStage == null)
+                return;
+
+            var allSurfacesInPrefab = prefabStage.prefabContentsRoot.GetComponentsInChildren<NavMeshSurface>(true);
+            NavMeshSurface surfaceInPrefab = null;
+            var index = 0;
+            do
+            {
+                if (allSurfacesInPrefab.Length > 0)
+                    surfaceInPrefab = allSurfacesInPrefab[index];
+
+                for (var i = m_PrefabNavMeshDataAssets.Count - 1; i >= 0; i--)
+                {
+                    var storedPrefabInfo = m_PrefabNavMeshDataAssets[i];
+                    if (storedPrefabInfo.surface == null)
+                    {
+                        // Debug.LogFormat("A surface from the prefab got deleted after it has baked a new NavMesh but it hasn't saved it. Now the unsaved asset gets deleted. ({0})", storedPrefabInfo.navMeshData);
+
+                        // surface got deleted, thus delete its initial NavMeshData asset
+                        if (storedPrefabInfo.navMeshData != null)
+                        {
+                            var assetPath = AssetDatabase.GetAssetPath(storedPrefabInfo.navMeshData);
+                            AssetDatabase.DeleteAsset(assetPath);
+                        }
+
+                        m_PrefabNavMeshDataAssets.RemoveAt(i);
+                    }
+                    else if (surfaceInPrefab != null && storedPrefabInfo.surface == surfaceInPrefab)
+                    {
+                        //Debug.LogFormat("The surface {0} from the prefab was storing the original navmesh data and now will be forgotten", surfaceInPrefab);
+
+                        var baseSurface = PrefabUtility.GetCorrespondingObjectFromSource(surfaceInPrefab) as NavMeshSurface;
+                        if (baseSurface == null || surfaceInPrefab.navMeshData != baseSurface.navMeshData)
+                        {
+                            var assetPath = AssetDatabase.GetAssetPath(surfaceInPrefab.navMeshData);
+                            AssetDatabase.DeleteAsset(assetPath);
+
+                            //Debug.LogFormat("The surface {0} from the prefab has baked new NavMeshData but did not save this change so the asset has been now deleted. ({1})",
+                            //    surfaceInPrefab, assetPath);
+                        }
+
+                        m_PrefabNavMeshDataAssets.RemoveAt(i);
+                    }
+                }
+            } while (++index < allSurfacesInPrefab.Length);
+
+            if (m_PrefabNavMeshDataAssets.Count == 0)
+            {
+                PrefabStage.prefabSaving -= DeleteStoredNavMeshDataAssetsForOwnedSurfaces;
+                PrefabStage.prefabStageClosing -= ForgetUnsavedNavMeshDataChanges;
+            }
+        }
+    }
+}

Assets/Scripts/PathFinding/NavMeshComponents/Editor/NavMeshAssetManager.cs.meta

@@ -0,0 +1,11 @@
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+guid: 0d969266144f4fb47be21604dd1e7900
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Assets/Scripts/PathFinding/NavMeshComponents/Editor/NavMeshComponentsEditor.asmdef

@@ -0,0 +1,16 @@
+{
+    "name": "NavMeshPlusEditor",
+    "references": [
+        "NavMeshPlus"
+    ],
+    "optionalUnityReferences": [],
+    "includePlatforms": [
+        "Editor"
+    ],
+    "excludePlatforms": [],
+    "allowUnsafeCode": false,
+    "overrideReferences": false,
+    "precompiledReferences": [],
+    "autoReferenced": true,
+    "defineConstraints": []
+}

Assets/Scripts/PathFinding/NavMeshComponents/Editor/NavMeshComponentsEditor.asmdef.meta

@@ -0,0 +1,7 @@
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+  userData: 
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Assets/Scripts/PathFinding/NavMeshComponents/Editor/NavMeshComponentsGUIUtility.cs

@@ -0,0 +1,276 @@
+using UnityEditor;
+using UnityEditor.AI;
+using UnityEngine;
+using UnityEngine.AI;
+
+namespace NavMeshPlus.Editors.Components
+{
+    public static class NavMeshComponentsGUIUtility
+    {
+        public static void AreaPopup(Rect rect, string labelName, SerializedProperty areaProperty)
+        {
+            var areaIndex = -1;
+            var areaNames = GameObjectUtility.GetNavMeshAreaNames();
+            for (var i = 0; i < areaNames.Length; i++)
+            {
+                var areaValue = GameObjectUtility.GetNavMeshAreaFromName(areaNames[i]);
+                if (areaValue == areaProperty.intValue)
+                    areaIndex = i;
+            }
+            ArrayUtility.Add(ref areaNames, "");
+            ArrayUtility.Add(ref areaNames, "Open Area Settings...");
+
+            EditorGUI.BeginProperty(rect, GUIContent.none, areaProperty);
+
+            EditorGUI.BeginChangeCheck();
+            areaIndex = EditorGUI.Popup(rect, labelName, areaIndex, areaNames);
+
+            if (EditorGUI.EndChangeCheck())
+            {
+                if (areaIndex >= 0 && areaIndex < areaNames.Length - 2)
+                    areaProperty.intValue = GameObjectUtility.GetNavMeshAreaFromName(areaNames[areaIndex]);
+                else if (areaIndex == areaNames.Length - 1)
+                    NavMeshEditorHelpers.OpenAreaSettings();
+            }
+
+            EditorGUI.EndProperty();
+        }
+
+        public static bool IsAgentSelectionValid(SerializedProperty agentTypeID)
+        {
+            var count = NavMesh.GetSettingsCount();
+            for (var i = 0; i < count; i++)
+            {
+                var id = NavMesh.GetSettingsByIndex(i).agentTypeID;
+                var name = NavMesh.GetSettingsNameFromID(id);
+                if (id == agentTypeID.intValue)
+                    return true;
+            }
+            return false;
+        }
+
+        public static void AgentTypePopup(Rect rect, string labelName, SerializedProperty agentTypeID)
+        {
+            var index = -1;
+            var count = NavMesh.GetSettingsCount();
+            var agentTypeNames = new string[count + 2];
+            for (var i = 0; i < count; i++)
+            {
+                var id = NavMesh.GetSettingsByIndex(i).agentTypeID;
+                var name = NavMesh.GetSettingsNameFromID(id);
+                agentTypeNames[i] = name;
+                if (id == agentTypeID.intValue)
+                    index = i;
+            }
+            agentTypeNames[count] = "";
+            agentTypeNames[count + 1] = "Open Agent Settings...";
+
+            bool validAgentType = index != -1;
+            if (!validAgentType)
+            {
+                Rect warningRect = rect;
+                warningRect.height *= .5f;
+                warningRect.y += warningRect.height;
+                EditorGUI.HelpBox(warningRect, "Agent Type invalid.", MessageType.Warning);
+
+                rect.height *= .5f;
+            }
+
+            EditorGUI.BeginProperty(rect, GUIContent.none, agentTypeID);
+
+            EditorGUI.BeginChangeCheck();
+            index = EditorGUI.Popup(rect, labelName, index, agentTypeNames);
+            if (EditorGUI.EndChangeCheck())
+            {
+                if (index >= 0 && index < count)
+                {
+                    var id = NavMesh.GetSettingsByIndex(index).agentTypeID;
+                    agentTypeID.intValue = id;
+                }
+                else if (index == count + 1)
+                {
+                    NavMeshEditorHelpers.OpenAgentSettings(-1);
+                }
+            }
+
+            EditorGUI.EndProperty();
+        }
+
+        // Agent mask is a set (internally array/list) of agentTypeIDs.
+        // It is used to describe which agents modifiers apply to.
+        // There is a special case of "None" which is an empty array.
+        // There is a special case of "All" which is an array of length 1, and value of -1.
+        public static void AgentMaskPopup(string labelName, SerializedProperty agentMask)
+        {
+            // Contents of the dropdown box.
+            string popupContent = "";
+
+            if (agentMask.hasMultipleDifferentValues)
+                popupContent = "\u2014";
+            else
+                popupContent = GetAgentMaskLabelName(agentMask);
+
+            var content = new GUIContent(popupContent);
+            var popupRect = GUILayoutUtility.GetRect(content, EditorStyles.popup);
+
+            EditorGUI.BeginProperty(popupRect, GUIContent.none, agentMask);
+            popupRect = EditorGUI.PrefixLabel(popupRect, 0, new GUIContent(labelName));
+            bool pressed = GUI.Button(popupRect, content, EditorStyles.popup);
+
+            if (pressed)
+            {
+                var show = !agentMask.hasMultipleDifferentValues;
+                var showNone = show && agentMask.arraySize == 0;
+                var showAll = show && IsAll(agentMask);
+
+                var menu = new GenericMenu();
+                menu.AddItem(new GUIContent("None"), showNone, SetAgentMaskNone, agentMask);
+                menu.AddItem(new GUIContent("All"), showAll, SetAgentMaskAll, agentMask);
+                menu.AddSeparator("");
+
+                var count = NavMesh.GetSettingsCount();
+                for (var i = 0; i < count; i++)
+                {
+                    var id = NavMesh.GetSettingsByIndex(i).agentTypeID;
+                    var sname = NavMesh.GetSettingsNameFromID(id);
+
+                    var showSelected = show && AgentMaskHasSelectedAgentTypeID(agentMask, id);
+                    var userData = new object[] { agentMask, id, !showSelected };
+                    menu.AddItem(new GUIContent(sname), showSelected, ToggleAgentMaskItem, userData);
+                }
+
+                menu.DropDown(popupRect);
+            }
+
+            EditorGUI.EndProperty();
+        }
+
+        public static GameObject CreateAndSelectGameObject(string suggestedName, GameObject parent)
+        {
+            var parentTransform = parent != null ? parent.transform : null;
+            var uniqueName = GameObjectUtility.GetUniqueNameForSibling(parentTransform, suggestedName);
+            var child = new GameObject(uniqueName);
+
+            Undo.RegisterCreatedObjectUndo(child, "Create " + uniqueName);
+            if (parentTransform != null)
+                Undo.SetTransformParent(child.transform, parentTransform, "Parent " + uniqueName);
+
+            Selection.activeGameObject = child;
+
+            return child;
+        }
+
+        static bool IsAll(SerializedProperty agentMask)
+        {
+            return agentMask.arraySize == 1 && agentMask.GetArrayElementAtIndex(0).intValue == -1;
+        }
+
+        static void ToggleAgentMaskItem(object userData)
+        {
+            var args = (object[])userData;
+            var agentMask = (SerializedProperty)args[0];
+            var agentTypeID = (int)args[1];
+            var value = (bool)args[2];
+
+            ToggleAgentMaskItem(agentMask, agentTypeID, value);
+        }
+
+        static void ToggleAgentMaskItem(SerializedProperty agentMask, int agentTypeID, bool value)
+        {
+            if (agentMask.hasMultipleDifferentValues)
+            {
+                agentMask.ClearArray();
+                agentMask.serializedObject.ApplyModifiedProperties();
+            }
+
+            // Find which index this agent type is in the agentMask array.
+            int idx = -1;
+            for (var j = 0; j < agentMask.arraySize; j++)
+            {
+                var elem = agentMask.GetArrayElementAtIndex(j);
+                if (elem.intValue == agentTypeID)
+                    idx = j;
+            }
+
+            // Handle "All" special case.
+            if (IsAll(agentMask))
+            {
+                agentMask.DeleteArrayElementAtIndex(0);
+            }
+
+            // Toggle value.
+            if (value)
+            {
+                if (idx == -1)
+                {
+                    agentMask.InsertArrayElementAtIndex(agentMask.arraySize);
+                    agentMask.GetArrayElementAtIndex(agentMask.arraySize - 1).intValue = agentTypeID;
+                }
+            }
+            else
+            {
+                if (idx != -1)
+                {
+                    agentMask.DeleteArrayElementAtIndex(idx);
+                }
+            }
+
+            agentMask.serializedObject.ApplyModifiedProperties();
+        }
+
+        static void SetAgentMaskNone(object data)
+        {
+            var agentMask = (SerializedProperty)data;
+            agentMask.ClearArray();
+            agentMask.serializedObject.ApplyModifiedProperties();
+        }
+
+        static void SetAgentMaskAll(object data)
+        {
+            var agentMask = (SerializedProperty)data;
+            agentMask.ClearArray();
+            agentMask.InsertArrayElementAtIndex(0);
+            agentMask.GetArrayElementAtIndex(0).intValue = -1;
+            agentMask.serializedObject.ApplyModifiedProperties();
+        }
+
+        static string GetAgentMaskLabelName(SerializedProperty agentMask)
+        {
+            if (agentMask.arraySize == 0)
+                return "None";
+
+            if (IsAll(agentMask))
+                return "All";
+
+            if (agentMask.arraySize <= 3)
+            {
+                var labelName = "";
+                for (var j = 0; j < agentMask.arraySize; j++)
+                {
+                    var elem = agentMask.GetArrayElementAtIndex(j);
+                    var settingsName = NavMesh.GetSettingsNameFromID(elem.intValue);
+                    if (string.IsNullOrEmpty(settingsName))
+                        continue;
+
+                    if (labelName.Length > 0)
+                        labelName += ", ";
+                    labelName += settingsName;
+                }
+                return labelName;
+            }
+
+            return "Mixed...";
+        }
+
+        static bool AgentMaskHasSelectedAgentTypeID(SerializedProperty agentMask, int agentTypeID)
+        {
+            for (var j = 0; j < agentMask.arraySize; j++)
+            {
+                var elem = agentMask.GetArrayElementAtIndex(j);
+                if (elem.intValue == agentTypeID)
+                    return true;
+            }
+            return false;
+        }
+    }
+}

Assets/Scripts/PathFinding/NavMeshComponents/Editor/NavMeshComponentsGUIUtility.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 6d05c56cb29ad5240bc671605f95db0c
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Scripts/PathFinding/NavMeshComponents/Editor/NavMeshLinkEditor.cs

@@ -0,0 +1,281 @@
+using NavMeshPlus.Components;
+using UnityEditor;
+using UnityEditor.AI;
+using UnityEngine;
+using UnityEngine.AI;
+
+namespace NavMeshPlus.Editors.Components
+{
+    [CanEditMultipleObjects]
+    [CustomEditor(typeof(NavMeshLink))]
+    class NavMeshLinkEditor : Editor
+    {
+        SerializedProperty m_AgentTypeID;
+        SerializedProperty m_Area;
+        SerializedProperty m_CostModifier;
+        SerializedProperty m_AutoUpdatePosition;
+        SerializedProperty m_Bidirectional;
+        SerializedProperty m_EndPoint;
+        SerializedProperty m_StartPoint;
+        SerializedProperty m_Width;
+
+        static int s_SelectedID;
+        static int s_SelectedPoint = -1;
+
+        static Color s_HandleColor = new Color(255f, 167f, 39f, 210f) / 255;
+        static Color s_HandleColorDisabled = new Color(255f * 0.75f, 167f * 0.75f, 39f * 0.75f, 100f) / 255;
+
+        void OnEnable()
+        {
+            m_AgentTypeID = serializedObject.FindProperty("m_AgentTypeID");
+            m_Area = serializedObject.FindProperty("m_Area");
+            m_CostModifier = serializedObject.FindProperty("m_CostModifier");
+            m_AutoUpdatePosition = serializedObject.FindProperty("m_AutoUpdatePosition");
+            m_Bidirectional = serializedObject.FindProperty("m_Bidirectional");
+            m_EndPoint = serializedObject.FindProperty("m_EndPoint");
+            m_StartPoint = serializedObject.FindProperty("m_StartPoint");
+            m_Width = serializedObject.FindProperty("m_Width");
+
+            s_SelectedID = 0;
+            s_SelectedPoint = -1;
+
+            NavMeshVisualizationSettings.showNavigation++;
+        }
+
+        void OnDisable()
+        {
+            NavMeshVisualizationSettings.showNavigation--;
+        }
+
+        static Matrix4x4 UnscaledLocalToWorldMatrix(Transform t)
+        {
+            return Matrix4x4.TRS(t.position, t.rotation, Vector3.one);
+        }
+
+        void AlignTransformToEndPoints(NavMeshLink navLink)
+        {
+            var mat = UnscaledLocalToWorldMatrix(navLink.transform);
+
+            var worldStartPt = mat.MultiplyPoint(navLink.startPoint);
+            var worldEndPt = mat.MultiplyPoint(navLink.endPoint);
+
+            var forward = worldEndPt - worldStartPt;
+            var up = navLink.transform.up;
+
+            // Flatten
+            forward -= Vector3.Dot(up, forward) * up;
+
+            var transform = navLink.transform;
+            transform.rotation = Quaternion.LookRotation(forward, up);
+            transform.position = (worldEndPt + worldStartPt) * 0.5f;
+            transform.localScale = Vector3.one;
+
+            navLink.startPoint = transform.InverseTransformPoint(worldStartPt);
+            navLink.endPoint = transform.InverseTransformPoint(worldEndPt);
+        }
+
+        public override void OnInspectorGUI()
+        {
+            serializedObject.Update();
+
+            EditorGUILayout.PropertyField(m_AgentTypeID);
+            EditorGUILayout.Space();
+
+            EditorGUILayout.PropertyField(m_StartPoint);
+            EditorGUILayout.PropertyField(m_EndPoint);
+
+            GUILayout.BeginHorizontal();
+            GUILayout.Space(EditorGUIUtility.labelWidth);
+            if (GUILayout.Button("Swap"))
+            {
+                foreach (NavMeshLink navLink in targets)
+                {
+                    var tmp = navLink.startPoint;
+                    navLink.startPoint = navLink.endPoint;
+                    navLink.endPoint = tmp;
+                }
+                SceneView.RepaintAll();
+            }
+            if (GUILayout.Button("Align Transform"))
+            {
+                foreach (NavMeshLink navLink in targets)
+                {
+                    Undo.RecordObject(navLink.transform, "Align Transform to End Points");
+                    Undo.RecordObject(navLink, "Align Transform to End Points");
+                    AlignTransformToEndPoints(navLink);
+                }
+                SceneView.RepaintAll();
+            }
+            GUILayout.EndHorizontal();
+            EditorGUILayout.Space();
+
+            EditorGUILayout.PropertyField(m_Width);
+            EditorGUILayout.PropertyField(m_CostModifier);
+            EditorGUILayout.PropertyField(m_AutoUpdatePosition);
+            EditorGUILayout.PropertyField(m_Bidirectional);
+            EditorGUILayout.PropertyField(m_Area);
+
+            serializedObject.ApplyModifiedProperties();
+
+            EditorGUILayout.Space();
+        }
+
+        static Vector3 CalcLinkRight(NavMeshLink navLink)
+        {
+            var dir = navLink.endPoint - navLink.startPoint;
+            return (new Vector3(-dir.z, 0.0f, dir.x)).normalized;
+        }
+
+        static void DrawLink(NavMeshLink navLink)
+        {
+            var right = CalcLinkRight(navLink);
+            var rad = navLink.width * 0.5f;
+
+            Gizmos.DrawLine(navLink.startPoint - right * rad, navLink.startPoint + right * rad);
+            Gizmos.DrawLine(navLink.endPoint - right * rad, navLink.endPoint + right * rad);
+            Gizmos.DrawLine(navLink.startPoint - right * rad, navLink.endPoint - right * rad);
+            Gizmos.DrawLine(navLink.startPoint + right * rad, navLink.endPoint + right * rad);
+        }
+
+        [DrawGizmo(GizmoType.Selected | GizmoType.Active | GizmoType.Pickable)]
+        static void RenderBoxGizmo(NavMeshLink navLink, GizmoType gizmoType)
+        {
+            if (!EditorApplication.isPlaying)
+                navLink.UpdateLink();
+
+            var color = s_HandleColor;
+            if (!navLink.enabled)
+                color = s_HandleColorDisabled;
+
+            var oldColor = Gizmos.color;
+            var oldMatrix = Gizmos.matrix;
+
+            Gizmos.matrix = UnscaledLocalToWorldMatrix(navLink.transform);
+
+            Gizmos.color = color;
+            DrawLink(navLink);
+
+            Gizmos.matrix = oldMatrix;
+            Gizmos.color = oldColor;
+
+            Gizmos.DrawIcon(navLink.transform.position, "NavMeshLink Icon", true);
+        }
+
+        [DrawGizmo(GizmoType.NotInSelectionHierarchy | GizmoType.Pickable)]
+        static void RenderBoxGizmoNotSelected(NavMeshLink navLink, GizmoType gizmoType)
+        {
+            if (NavMeshVisualizationSettings.showNavigation > 0)
+            {
+                var color = s_HandleColor;
+                if (!navLink.enabled)
+                    color = s_HandleColorDisabled;
+
+                var oldColor = Gizmos.color;
+                var oldMatrix = Gizmos.matrix;
+
+                Gizmos.matrix = UnscaledLocalToWorldMatrix(navLink.transform);
+
+                Gizmos.color = color;
+                DrawLink(navLink);
+
+                Gizmos.matrix = oldMatrix;
+                Gizmos.color = oldColor;
+            }
+
+            Gizmos.DrawIcon(navLink.transform.position, "NavMeshLink Icon", true);
+        }
+
+        public void OnSceneGUI()
+        {
+            var navLink = (NavMeshLink)target;
+            if (!navLink.enabled)
+                return;
+
+            var mat = UnscaledLocalToWorldMatrix(navLink.transform);
+
+            var startPt = mat.MultiplyPoint(navLink.startPoint);
+            var endPt = mat.MultiplyPoint(navLink.endPoint);
+            var midPt = Vector3.Lerp(startPt, endPt, 0.35f);
+            var startSize = HandleUtility.GetHandleSize(startPt);
+            var endSize = HandleUtility.GetHandleSize(endPt);
+            var midSize = HandleUtility.GetHandleSize(midPt);
+
+            var zup = Quaternion.FromToRotation(Vector3.forward, Vector3.up);
+            var right = mat.MultiplyVector(CalcLinkRight(navLink));
+
+            var oldColor = Handles.color;
+            Handles.color = s_HandleColor;
+
+            Vector3 pos;
+
+            if (navLink.GetInstanceID() == s_SelectedID && s_SelectedPoint == 0)
+            {
+                EditorGUI.BeginChangeCheck();
+                Handles.CubeHandleCap(0, startPt, zup, 0.1f * startSize, Event.current.type);
+                pos = Handles.PositionHandle(startPt, navLink.transform.rotation);
+                if (EditorGUI.EndChangeCheck())
+                {
+                    Undo.RecordObject(navLink, "Move link point");
+                    navLink.startPoint = mat.inverse.MultiplyPoint(pos);
+                }
+            }
+            else
+            {
+                if (Handles.Button(startPt, zup, 0.1f * startSize, 0.1f * startSize, Handles.CubeHandleCap))
+                {
+                    s_SelectedPoint = 0;
+                    s_SelectedID = navLink.GetInstanceID();
+                }
+            }
+
+            if (navLink.GetInstanceID() == s_SelectedID && s_SelectedPoint == 1)
+            {
+                EditorGUI.BeginChangeCheck();
+                Handles.CubeHandleCap(0, endPt, zup, 0.1f * startSize, Event.current.type);
+                pos = Handles.PositionHandle(endPt, navLink.transform.rotation);
+                if (EditorGUI.EndChangeCheck())
+                {
+                    Undo.RecordObject(navLink, "Move link point");
+                    navLink.endPoint = mat.inverse.MultiplyPoint(pos);
+                }
+            }
+            else
+            {
+                if (Handles.Button(endPt, zup, 0.1f * endSize, 0.1f * endSize, Handles.CubeHandleCap))
+                {
+                    s_SelectedPoint = 1;
+                    s_SelectedID = navLink.GetInstanceID();
+                }
+            }
+
+            EditorGUI.BeginChangeCheck();
+            pos = Handles.Slider(midPt + right * navLink.width * 0.5f, right, midSize * 0.03f, Handles.DotHandleCap, 0);
+            if (EditorGUI.EndChangeCheck())
+            {
+                Undo.RecordObject(navLink, "Adjust link width");
+                navLink.width = Mathf.Max(0.0f, 2.0f * Vector3.Dot(right, (pos - midPt)));
+            }
+
+            EditorGUI.BeginChangeCheck();
+            pos = Handles.Slider(midPt - right * navLink.width * 0.5f, -right, midSize * 0.03f, Handles.DotHandleCap, 0);
+            if (EditorGUI.EndChangeCheck())
+            {
+                Undo.RecordObject(navLink, "Adjust link width");
+                navLink.width = Mathf.Max(0.0f, 2.0f * Vector3.Dot(-right, (pos - midPt)));
+            }
+
+            Handles.color = oldColor;
+        }
+
+        [MenuItem("GameObject/Navigation/NavMesh Link", false, 2002)]
+        static public void CreateNavMeshLink(MenuCommand menuCommand)
+        {
+            var parent = menuCommand.context as GameObject;
+            GameObject go = NavMeshComponentsGUIUtility.CreateAndSelectGameObject("NavMesh Link", parent);
+            go.AddComponent<NavMeshLink>();
+            var view = SceneView.lastActiveSceneView;
+            if (view != null)
+                view.MoveToView(go.transform);
+        }
+    }
+}

Assets/Scripts/PathFinding/NavMeshComponents/Editor/NavMeshLinkEditor.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 03832abc07e3394479eec5708b22e984
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Scripts/PathFinding/NavMeshComponents/Editor/NavMeshModifierEditor.cs

@@ -0,0 +1,53 @@
+using NavMeshPlus.Components;
+using NavMeshPlus.Extensions;
+using UnityEditor;
+using UnityEditor.AI;
+using UnityEngine.AI;
+
+namespace NavMeshPlus.Editors.Components
+{ 
+    [CanEditMultipleObjects]
+    [CustomEditor(typeof(NavMeshModifier))]
+    class NavMeshModifierEditor : Editor
+    {
+        SerializedProperty m_AffectedAgents;
+        SerializedProperty m_Area;
+        SerializedProperty m_IgnoreFromBuild;
+        SerializedProperty m_OverrideArea;
+
+        void OnEnable()
+        {
+            m_AffectedAgents = serializedObject.FindProperty("m_AffectedAgents");
+            m_Area = serializedObject.FindProperty("m_Area");
+            m_IgnoreFromBuild = serializedObject.FindProperty("m_IgnoreFromBuild");
+            m_OverrideArea = serializedObject.FindProperty("m_OverrideArea");
+
+            NavMeshVisualizationSettings.showNavigation++;
+        }
+
+        void OnDisable()
+        {
+            NavMeshVisualizationSettings.showNavigation--;
+        }
+
+        public override void OnInspectorGUI()
+        {
+            serializedObject.Update();
+
+            EditorGUILayout.PropertyField(m_IgnoreFromBuild);
+
+            EditorGUILayout.PropertyField(m_OverrideArea);
+            if (m_OverrideArea.boolValue)
+            {
+                EditorGUI.indentLevel++;
+                EditorGUILayout.PropertyField(m_Area);
+                EditorGUI.indentLevel--;
+            }
+
+            NavMeshComponentsGUIUtility.AgentMaskPopup("Affected Agents", m_AffectedAgents);
+            EditorGUILayout.Space();
+
+            serializedObject.ApplyModifiedProperties();
+        }
+    }
+}

Assets/Scripts/PathFinding/NavMeshComponents/Editor/NavMeshModifierEditor.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: b8fce3c13f011874d92d75ca24a90702
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Scripts/PathFinding/NavMeshComponents/Editor/NavMeshModifierTilemapEditor.cs

@@ -0,0 +1,158 @@
+using NavMeshPlus.Components;
+using NavMeshPlus.Extensions;
+using System.Collections.Generic;
+using System.Linq;
+using UnityEngine;
+using UnityEditor;
+using UnityEditor.UIElements;
+using UnityEditor.AI;
+using UnityEngine.AI;
+using UnityEngine.Tilemaps;
+
+//***********************************************************************************
+// Contributed by author jl-randazzo github.com/jl-randazzo
+//***********************************************************************************
+namespace NavMeshPlus.Editors.Components
+{
+    [CanEditMultipleObjects]
+    [CustomEditor(typeof(NavMeshModifierTilemap))]
+    class NavMeshModifierTilemapEditor : Editor
+    {
+        SerializedProperty m_TileModifiers;
+
+        void OnEnable()
+        {
+            m_TileModifiers = serializedObject.FindProperty("m_TileModifiers");
+        }
+
+        public override void OnInspectorGUI()
+        {
+            NavMeshModifierTilemap modifierTilemap = target as NavMeshModifierTilemap;
+
+            serializedObject.Update();
+            EditorGUILayout.PropertyField(m_TileModifiers);
+
+            if (modifierTilemap.HasDuplicateTileModifiers())
+            {
+                EditorGUILayout.HelpBox("There are duplicate Tile entries in the tilemap modifiers! Only the first will be used.", MessageType.Warning);
+            }
+
+            EditorGUILayout.Space();
+
+            Tilemap tilemap = modifierTilemap.GetComponent<Tilemap>();
+            if (tilemap)
+            {
+                if (GUILayout.Button("Add Used Tiles"))
+                {
+                    AddUsedTiles(tilemap, modifierTilemap);
+                }
+            }
+            else
+            {
+                EditorGUILayout.HelpBox("Missing required component 'Tilemap'", MessageType.Error);
+            }
+
+            if (serializedObject.ApplyModifiedProperties())
+            {
+                modifierTilemap.CacheModifiers();
+            }
+        }
+
+        private void AddUsedTiles(Tilemap tilemap, NavMeshModifierTilemap modifierTilemap)
+        {
+            Dictionary<TileBase, NavMeshModifierTilemap.TileModifier> tileModifiers = modifierTilemap.GetModifierMap();
+
+            BoundsInt bounds = tilemap.cellBounds;
+            for (int i = bounds.xMin; i <= bounds.xMax; i++)
+            {
+                for (int j = bounds.yMin; j <= bounds.yMax; j++)
+                {
+                    for (int k = bounds.zMin; k <= bounds.zMax; k++)
+                    {
+                        if (tilemap.GetTile(new Vector3Int(i, j, k)) is TileBase tileBase)
+                        {
+                            if (!tileModifiers.ContainsKey(tileBase))
+                            {
+                                tileModifiers.Add(tileBase, new NavMeshModifierTilemap.TileModifier());
+
+                                int idx = m_TileModifiers.arraySize;
+                                m_TileModifiers.InsertArrayElementAtIndex(idx);
+                                var newElem = m_TileModifiers.GetArrayElementAtIndex(idx);
+                                var tileProperty = newElem.FindPropertyRelative(nameof(NavMeshModifierTilemap.TileModifier.tile));
+                                tileProperty.objectReferenceValue = tileBase;
+                            }
+                        }
+                    }
+                }
+            }
+        }
+
+        [CustomPropertyDrawer(typeof(NavMeshModifierTilemap.TileModifier))]
+        class TileModifierPropertyDrawer : PropertyDrawer
+        {
+            private Rect ClaimAdvance(ref Rect position, float height)
+            {
+                Rect retVal = position;
+                retVal.height = height;
+                position.y += height;
+                position.height -= height;
+                return retVal;
+            }
+
+            public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
+            {
+                Rect expandRect = ClaimAdvance(ref position, 20);
+                property.isExpanded = EditorGUI.Foldout(expandRect, property.isExpanded, label);
+                if (property.isExpanded)
+                {
+                    var tileProperty = property.FindPropertyRelative(nameof(NavMeshModifierTilemap.TileModifier.tile));
+                    Rect tileRect = ClaimAdvance(ref position, 40);
+                    tileRect.width -= 40;
+
+                    Rect previewRect = tileRect;
+                    previewRect.width = 40;
+                    previewRect.x += tileRect.width;
+                    tileRect.height /= 2;
+
+                    // Adding the tile selector and a preview image.
+                    EditorGUI.PropertyField(tileRect, tileProperty);
+                    TileBase tileBase = tileProperty.objectReferenceValue as TileBase;
+                    TileData tileData = new TileData();
+                    tileBase?.GetTileData(Vector3Int.zero, null, ref tileData);
+                    if (tileData.sprite)
+                    {
+                        EditorGUI.DrawPreviewTexture(previewRect, tileData.sprite?.texture, null, ScaleMode.ScaleToFit, 0);
+                    }
+
+                    Rect toggleRect = ClaimAdvance(ref position, 20);
+                    var overrideAreaProperty = property.FindPropertyRelative(nameof(NavMeshModifierTilemap.TileModifier.overrideArea));
+                    EditorGUI.PropertyField(toggleRect, overrideAreaProperty);
+
+                    if (overrideAreaProperty.boolValue)
+                    {
+                        Rect areaRect = ClaimAdvance(ref position, 20);
+                        var areaProperty = property.FindPropertyRelative(nameof(NavMeshModifierTilemap.TileModifier.area));
+                        EditorGUI.indentLevel++;
+                        EditorGUI.PropertyField(areaRect, areaProperty);
+                        EditorGUI.indentLevel--;
+                    }
+                }
+            }
+
+            public override float GetPropertyHeight(SerializedProperty property, GUIContent label)
+            {
+                if (property.isExpanded)
+                {
+                    var overrideAreaProperty = property.FindPropertyRelative(nameof(NavMeshModifierTilemap.TileModifier.overrideArea));
+                    if (overrideAreaProperty.boolValue)
+                    {
+                        return 100;
+                    }
+                    return 80;
+                }
+                return 20;
+
+            }
+        }
+    }
+}

Assets/Scripts/PathFinding/NavMeshComponents/Editor/NavMeshModifierTilemapEditor.cs.meta

@@ -0,0 +1,11 @@
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+guid: 1fa3ed80a7c8401995efba10b64226e9
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Scripts/PathFinding/NavMeshComponents/Editor/NavMeshModifierVolumeEditor.cs

@@ -0,0 +1,149 @@
+using UnityEditor.IMGUI.Controls;
+using UnityEditorInternal;
+using UnityEngine.AI;
+using UnityEngine;
+using NavMeshPlus.Extensions;
+using UnityEditor;
+using UnityEditor.AI;
+using NavMeshPlus.Components;
+
+namespace NavMeshPlus.Editors.Components
+{
+    [CanEditMultipleObjects]
+    [CustomEditor(typeof(NavMeshModifierVolume))]
+    class NavMeshModifierVolumeEditor : Editor
+    {
+        SerializedProperty m_AffectedAgents;
+        SerializedProperty m_Area;
+        SerializedProperty m_Center;
+        SerializedProperty m_Size;
+
+        static Color s_HandleColor = new Color(187f, 138f, 240f, 210f) / 255;
+        static Color s_HandleColorDisabled = new Color(187f * 0.75f, 138f * 0.75f, 240f * 0.75f, 100f) / 255;
+
+        BoxBoundsHandle m_BoundsHandle = new BoxBoundsHandle();
+
+        bool editingCollider
+        {
+            get { return EditMode.editMode == EditMode.SceneViewEditMode.Collider && EditMode.IsOwner(this); }
+        }
+
+        void OnEnable()
+        {
+            m_AffectedAgents = serializedObject.FindProperty("m_AffectedAgents");
+            m_Area = serializedObject.FindProperty("m_Area");
+            m_Center = serializedObject.FindProperty("m_Center");
+            m_Size = serializedObject.FindProperty("m_Size");
+
+            NavMeshVisualizationSettings.showNavigation++;
+        }
+
+        void OnDisable()
+        {
+            NavMeshVisualizationSettings.showNavigation--;
+        }
+
+        Bounds GetBounds()
+        {
+            var navModifier = (NavMeshModifierVolume)target;
+            return new Bounds(navModifier.transform.position, navModifier.size);
+        }
+
+        public override void OnInspectorGUI()
+        {
+            serializedObject.Update();
+
+            EditMode.DoEditModeInspectorModeButton(EditMode.SceneViewEditMode.Collider, "Edit Volume",
+                EditorGUIUtility.IconContent("EditCollider"), GetBounds, this);
+
+            EditorGUILayout.PropertyField(m_Size);
+            EditorGUILayout.PropertyField(m_Center);
+            EditorGUILayout.PropertyField(m_Area);
+            NavMeshComponentsGUIUtility.AgentMaskPopup("Affected Agents", m_AffectedAgents);
+            EditorGUILayout.Space();
+
+            serializedObject.ApplyModifiedProperties();
+        }
+
+        [DrawGizmo(GizmoType.Selected | GizmoType.Active)]
+        static void RenderBoxGizmo(NavMeshModifierVolume navModifier, GizmoType gizmoType)
+        {
+            var color = navModifier.enabled ? s_HandleColor : s_HandleColorDisabled;
+            var colorTrans = new Color(color.r * 0.75f, color.g * 0.75f, color.b * 0.75f, color.a * 0.15f);
+
+            var oldColor = Gizmos.color;
+            var oldMatrix = Gizmos.matrix;
+
+            Gizmos.matrix = navModifier.transform.localToWorldMatrix;
+
+            Gizmos.color = colorTrans;
+            Gizmos.DrawCube(navModifier.center, navModifier.size);
+
+            Gizmos.color = color;
+            Gizmos.DrawWireCube(navModifier.center, navModifier.size);
+
+            Gizmos.matrix = oldMatrix;
+            Gizmos.color = oldColor;
+
+            Gizmos.DrawIcon(navModifier.transform.position, "NavMeshModifierVolume Icon", true);
+        }
+
+        [DrawGizmo(GizmoType.NotInSelectionHierarchy | GizmoType.Pickable)]
+        static void RenderBoxGizmoNotSelected(NavMeshModifierVolume navModifier, GizmoType gizmoType)
+        {
+            if (NavMeshVisualizationSettings.showNavigation > 0)
+            {
+                var color = navModifier.enabled ? s_HandleColor : s_HandleColorDisabled;
+                var oldColor = Gizmos.color;
+                var oldMatrix = Gizmos.matrix;
+
+                Gizmos.matrix = navModifier.transform.localToWorldMatrix;
+
+                Gizmos.color = color;
+                Gizmos.DrawWireCube(navModifier.center, navModifier.size);
+
+                Gizmos.matrix = oldMatrix;
+                Gizmos.color = oldColor;
+            }
+
+            Gizmos.DrawIcon(navModifier.transform.position, "NavMeshModifierVolume Icon", true);
+        }
+
+        void OnSceneGUI()
+        {
+            if (!editingCollider)
+                return;
+
+            var vol = (NavMeshModifierVolume)target;
+            var color = vol.enabled ? s_HandleColor : s_HandleColorDisabled;
+            using (new Handles.DrawingScope(color, vol.transform.localToWorldMatrix))
+            {
+                m_BoundsHandle.center = vol.center;
+                m_BoundsHandle.size = vol.size;
+
+                EditorGUI.BeginChangeCheck();
+                m_BoundsHandle.DrawHandle();
+                if (EditorGUI.EndChangeCheck())
+                {
+                    Undo.RecordObject(vol, "Modified NavMesh Modifier Volume");
+                    Vector3 center = m_BoundsHandle.center;
+                    Vector3 size = m_BoundsHandle.size;
+                    vol.center = center;
+                    vol.size = size;
+                    EditorUtility.SetDirty(target);
+                }
+            }
+        }
+
+        [MenuItem("GameObject/Navigation/NavMesh Modifier Volume", false, 2001)]
+        static public void CreateNavMeshModifierVolume(MenuCommand menuCommand)
+        {
+            var parent = menuCommand.context as GameObject;
+            var go = NavMeshComponentsGUIUtility.CreateAndSelectGameObject("NavMesh Modifier Volume", parent);
+            go.AddComponent<NavMeshModifierVolume>();
+            var view = SceneView.lastActiveSceneView;
+            if (view != null)
+                view.MoveToView(go.transform);
+        }
+    }
+}

Assets/Scripts/PathFinding/NavMeshComponents/Editor/NavMeshModifierVolumeEditor.cs.meta

@@ -0,0 +1,11 @@
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+guid: 5999826ec8e37f74a80d7f6ee2700a3a
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Scripts/PathFinding/NavMeshComponents/Editor/NavMeshSurfaceEditor.cs

@@ -0,0 +1,399 @@
+#define NAVMESHCOMPONENTS_SHOW_NAVMESHDATA_REF
+
+using System.Linq;
+using UnityEditor.IMGUI.Controls;
+using UnityEditorInternal;
+using UnityEngine.AI;
+using UnityEngine;
+using UnityEditor;
+using UnityEditor.AI;
+using NavMeshPlus.Components;
+
+namespace NavMeshPlus.Editors.Components
+{
+    [CanEditMultipleObjects]
+    [CustomEditor(typeof(NavMeshSurface))]
+    class NavMeshSurfaceEditor : Editor
+    {
+        SerializedProperty m_AgentTypeID;
+        SerializedProperty m_BuildHeightMesh;
+        SerializedProperty m_Center;
+        SerializedProperty m_CollectObjects;
+        SerializedProperty m_DefaultArea;
+        SerializedProperty m_LayerMask;
+        SerializedProperty m_OverrideTileSize;
+        SerializedProperty m_OverrideVoxelSize;
+        SerializedProperty m_Size;
+        SerializedProperty m_TileSize;
+        SerializedProperty m_UseGeometry;
+        SerializedProperty m_VoxelSize;
+
+#if NAVMESHCOMPONENTS_SHOW_NAVMESHDATA_REF
+        SerializedProperty m_NavMeshData;
+#endif
+        class Styles
+        {
+            public readonly GUIContent m_LayerMask = new GUIContent("Include Layers");
+
+            public readonly GUIContent m_ShowInputGeom = new GUIContent("Show Input Geom");
+            public readonly GUIContent m_ShowVoxels = new GUIContent("Show Voxels");
+            public readonly GUIContent m_ShowRegions = new GUIContent("Show Regions");
+            public readonly GUIContent m_ShowRawContours = new GUIContent("Show Raw Contours");
+            public readonly GUIContent m_ShowContours = new GUIContent("Show Contours");
+            public readonly GUIContent m_ShowPolyMesh = new GUIContent("Show Poly Mesh");
+            public readonly GUIContent m_ShowPolyMeshDetail = new GUIContent("Show Poly Mesh Detail");
+        }
+
+        static Styles s_Styles;
+
+        static bool s_ShowDebugOptions;
+
+        static Color s_HandleColor = new Color(127f, 214f, 244f, 100f) / 255;
+        static Color s_HandleColorSelected = new Color(127f, 214f, 244f, 210f) / 255;
+        static Color s_HandleColorDisabled = new Color(127f * 0.75f, 214f * 0.75f, 244f * 0.75f, 100f) / 255;
+
+        BoxBoundsHandle m_BoundsHandle = new BoxBoundsHandle();
+
+        bool editingCollider
+        {
+            get { return EditMode.editMode == EditMode.SceneViewEditMode.Collider && EditMode.IsOwner(this); }
+        }
+
+        void OnEnable()
+        {
+            m_AgentTypeID = serializedObject.FindProperty("m_AgentTypeID");
+            m_BuildHeightMesh = serializedObject.FindProperty("m_BuildHeightMesh");
+            m_Center = serializedObject.FindProperty("m_Center");
+            m_CollectObjects = serializedObject.FindProperty("m_CollectObjects");
+            m_DefaultArea = serializedObject.FindProperty("m_DefaultArea");
+            m_LayerMask = serializedObject.FindProperty("m_LayerMask");
+            m_OverrideTileSize = serializedObject.FindProperty("m_OverrideTileSize");
+            m_OverrideVoxelSize = serializedObject.FindProperty("m_OverrideVoxelSize");
+            m_Size = serializedObject.FindProperty("m_Size");
+            m_TileSize = serializedObject.FindProperty("m_TileSize");
+            m_UseGeometry = serializedObject.FindProperty("m_UseGeometry");
+            m_VoxelSize = serializedObject.FindProperty("m_VoxelSize");
+
+#if NAVMESHCOMPONENTS_SHOW_NAVMESHDATA_REF
+            m_NavMeshData = serializedObject.FindProperty("m_NavMeshData");
+#endif
+            NavMeshVisualizationSettings.showNavigation++;
+        }
+
+        void OnDisable()
+        {
+            NavMeshVisualizationSettings.showNavigation--;
+        }
+
+        Bounds GetBounds()
+        {
+            var navSurface = (NavMeshSurface)target;
+            return new Bounds(navSurface.transform.position, navSurface.size);
+        }
+
+        public override void OnInspectorGUI()
+        {
+            if (s_Styles == null)
+                s_Styles = new Styles();
+
+            serializedObject.Update();
+
+            var bs = NavMesh.GetSettingsByID(m_AgentTypeID.intValue);
+
+            if (bs.agentTypeID != -1)
+            {
+                // Draw image
+                const float diagramHeight = 80.0f;
+                Rect agentDiagramRect = EditorGUILayout.GetControlRect(false, diagramHeight);
+                NavMeshEditorHelpers.DrawAgentDiagram(agentDiagramRect, bs.agentRadius, bs.agentHeight, bs.agentClimb, bs.agentSlope);
+            }
+
+            EditorGUILayout.PropertyField(m_AgentTypeID);
+            EditorGUILayout.Space();
+
+            EditorGUILayout.PropertyField(m_CollectObjects);
+            if ((CollectObjects)m_CollectObjects.enumValueIndex == CollectObjects.Volume)
+            {
+                EditorGUI.indentLevel++;
+
+                EditMode.DoEditModeInspectorModeButton(EditMode.SceneViewEditMode.Collider, "Edit Volume",
+                    EditorGUIUtility.IconContent("EditCollider"), GetBounds, this);
+                EditorGUILayout.PropertyField(m_Size);
+                EditorGUILayout.PropertyField(m_Center);
+
+                EditorGUI.indentLevel--;
+            }
+            else
+            {
+                if (editingCollider)
+                    EditMode.QuitEditMode();
+            }
+
+            EditorGUILayout.PropertyField(m_LayerMask, s_Styles.m_LayerMask);
+            EditorGUILayout.PropertyField(m_UseGeometry);
+
+            EditorGUILayout.Space();
+
+            m_OverrideVoxelSize.isExpanded = EditorGUILayout.Foldout(m_OverrideVoxelSize.isExpanded, "Advanced");
+            if (m_OverrideVoxelSize.isExpanded)
+            {
+                EditorGUI.indentLevel++;
+
+                EditorGUILayout.PropertyField(m_DefaultArea);
+
+                // Override voxel size.
+                EditorGUILayout.PropertyField(m_OverrideVoxelSize);
+
+                using (new EditorGUI.DisabledScope(!m_OverrideVoxelSize.boolValue || m_OverrideVoxelSize.hasMultipleDifferentValues))
+                {
+                    EditorGUI.indentLevel++;
+
+                    EditorGUILayout.PropertyField(m_VoxelSize);
+
+                    if (!m_OverrideVoxelSize.hasMultipleDifferentValues)
+                    {
+                        if (!m_AgentTypeID.hasMultipleDifferentValues)
+                        {
+                            float voxelsPerRadius = m_VoxelSize.floatValue > 0.0f ? (bs.agentRadius / m_VoxelSize.floatValue) : 0.0f;
+                            EditorGUILayout.LabelField(" ", voxelsPerRadius.ToString("0.00") + " voxels per agent radius", EditorStyles.miniLabel);
+                        }
+                        if (m_OverrideVoxelSize.boolValue)
+                            EditorGUILayout.HelpBox("Voxel size controls how accurately the navigation mesh is generated from the level geometry. A good voxel size is 2-4 voxels per agent radius. Making voxel size smaller will increase build time.", MessageType.None);
+                    }
+                    EditorGUI.indentLevel--;
+                }
+
+                // Override tile size
+                EditorGUILayout.PropertyField(m_OverrideTileSize);
+
+                using (new EditorGUI.DisabledScope(!m_OverrideTileSize.boolValue || m_OverrideTileSize.hasMultipleDifferentValues))
+                {
+                    EditorGUI.indentLevel++;
+
+                    EditorGUILayout.PropertyField(m_TileSize);
+
+                    if (!m_TileSize.hasMultipleDifferentValues && !m_VoxelSize.hasMultipleDifferentValues)
+                    {
+                        float tileWorldSize = m_TileSize.intValue * m_VoxelSize.floatValue;
+                        EditorGUILayout.LabelField(" ", tileWorldSize.ToString("0.00") + " world units", EditorStyles.miniLabel);
+                    }
+
+                    if (!m_OverrideTileSize.hasMultipleDifferentValues)
+                    {
+                        if (m_OverrideTileSize.boolValue)
+                            EditorGUILayout.HelpBox("Tile size controls the how local the changes to the world are (rebuild or carve). Small tile size allows more local changes, while potentially generating more data overall.", MessageType.None);
+                    }
+                    EditorGUI.indentLevel--;
+                }
+
+
+                // Height mesh
+                using (new EditorGUI.DisabledScope(true))
+                {
+                    EditorGUILayout.PropertyField(m_BuildHeightMesh);
+                }
+
+                EditorGUILayout.Space();
+                EditorGUI.indentLevel--;
+            }
+
+            EditorGUILayout.Space();
+
+            serializedObject.ApplyModifiedProperties();
+
+            var hadError = false;
+            var multipleTargets = targets.Length > 1;
+            foreach (NavMeshSurface navSurface in targets)
+            {
+                var settings = navSurface.GetBuildSettings();
+                // Calculating bounds is potentially expensive when unbounded - so here we just use the center/size.
+                // It means the validation is not checking vertical voxel limit correctly when the surface is set to something else than "in volume".
+                var bounds = new Bounds(Vector3.zero, Vector3.zero);
+                if (navSurface.collectObjects == CollectObjects.Volume)
+                {
+                    bounds = new Bounds(navSurface.center, navSurface.size);
+                }
+
+                var errors = settings.ValidationReport(bounds);
+                if (errors.Length > 0)
+                {
+                    if (multipleTargets)
+                        EditorGUILayout.LabelField(navSurface.name);
+                    foreach (var err in errors)
+                    {
+                        EditorGUILayout.HelpBox(err, MessageType.Warning);
+                    }
+                    GUILayout.BeginHorizontal();
+                    GUILayout.Space(EditorGUIUtility.labelWidth);
+                    if (GUILayout.Button("Open Agent Settings...", EditorStyles.miniButton))
+                        NavMeshEditorHelpers.OpenAgentSettings(navSurface.agentTypeID);
+                    GUILayout.EndHorizontal();
+                    hadError = true;
+                }
+            }
+
+            if (hadError)
+                EditorGUILayout.Space();
+
+#if NAVMESHCOMPONENTS_SHOW_NAVMESHDATA_REF
+            var nmdRect = EditorGUILayout.GetControlRect(true, EditorGUIUtility.singleLineHeight);
+
+            EditorGUI.BeginProperty(nmdRect, GUIContent.none, m_NavMeshData);
+            var rectLabel = EditorGUI.PrefixLabel(nmdRect, GUIUtility.GetControlID(FocusType.Passive), new GUIContent(m_NavMeshData.displayName));
+            EditorGUI.EndProperty();
+
+            using (new EditorGUI.DisabledScope(true))
+            {
+                EditorGUI.BeginProperty(nmdRect, GUIContent.none, m_NavMeshData);
+                EditorGUI.ObjectField(rectLabel, m_NavMeshData, GUIContent.none);
+                EditorGUI.EndProperty();
+            }
+#endif
+            using (new EditorGUI.DisabledScope(Application.isPlaying || m_AgentTypeID.intValue == -1))
+            {
+                GUILayout.BeginHorizontal();
+                GUILayout.Space(EditorGUIUtility.labelWidth);
+                if (GUILayout.Button("Clear"))
+                {
+                    NavMeshAssetManager.instance.ClearSurfaces(targets);
+                    SceneView.RepaintAll();
+                }
+
+                if (GUILayout.Button("Bake"))
+                {
+                    NavMeshAssetManager.instance.StartBakingSurfaces(targets);
+                }
+
+                GUILayout.EndHorizontal();
+            }
+
+            // Show progress for the selected targets
+            var bakeOperations = NavMeshAssetManager.instance.GetBakeOperations();
+            for (int i = bakeOperations.Count - 1; i >= 0; --i)
+            {
+                if (!targets.Contains(bakeOperations[i].surface))
+                    continue;
+
+                var oper = bakeOperations[i].bakeOperation;
+                if (oper == null)
+                    continue;
+
+                var p = oper.progress;
+                if (oper.isDone)
+                {
+                    SceneView.RepaintAll();
+                    continue;
+                }
+
+                GUILayout.BeginHorizontal();
+
+                if (GUILayout.Button("Cancel", EditorStyles.miniButton))
+                {
+                    var bakeData = bakeOperations[i].bakeData;
+                    UnityEngine.AI.NavMeshBuilder.Cancel(bakeData);
+                    bakeOperations.RemoveAt(i);
+                }
+
+                EditorGUI.ProgressBar(EditorGUILayout.GetControlRect(), p, "Baking: " + (int)(100 * p) + "%");
+                if (p <= 1)
+                    Repaint();
+
+                GUILayout.EndHorizontal();
+            }
+        }
+
+        [DrawGizmo(GizmoType.Selected | GizmoType.Active | GizmoType.Pickable)]
+        static void RenderBoxGizmoSelected(NavMeshSurface navSurface, GizmoType gizmoType)
+        {
+            RenderBoxGizmo(navSurface, gizmoType, true);
+        }
+
+        [DrawGizmo(GizmoType.NotInSelectionHierarchy | GizmoType.Pickable)]
+        static void RenderBoxGizmoNotSelected(NavMeshSurface navSurface, GizmoType gizmoType)
+        {
+            if (NavMeshVisualizationSettings.showNavigation > 0)
+                RenderBoxGizmo(navSurface, gizmoType, false);
+            else
+                Gizmos.DrawIcon(navSurface.transform.position, "NavMeshSurface Icon", true);
+        }
+
+        static void RenderBoxGizmo(NavMeshSurface navSurface, GizmoType gizmoType, bool selected)
+        {
+            var color = selected ? s_HandleColorSelected : s_HandleColor;
+            if (!navSurface.enabled)
+                color = s_HandleColorDisabled;
+
+            var oldColor = Gizmos.color;
+            var oldMatrix = Gizmos.matrix;
+
+            // Use the unscaled matrix for the NavMeshSurface
+            var localToWorld = Matrix4x4.TRS(navSurface.transform.position, navSurface.transform.rotation, Vector3.one);
+            Gizmos.matrix = localToWorld;
+
+            if (navSurface.collectObjects == CollectObjects.Volume)
+            {
+                Gizmos.color = color;
+                Gizmos.DrawWireCube(navSurface.center, navSurface.size);
+
+                if (selected && navSurface.enabled)
+                {
+                    var colorTrans = new Color(color.r * 0.75f, color.g * 0.75f, color.b * 0.75f, color.a * 0.15f);
+                    Gizmos.color = colorTrans;
+                    Gizmos.DrawCube(navSurface.center, navSurface.size);
+                }
+            }
+            else
+            {
+                if (navSurface.navMeshData != null)
+                {
+                    var bounds = navSurface.navMeshData.sourceBounds;
+                    Gizmos.color = Color.grey;
+                    Gizmos.DrawWireCube(bounds.center, bounds.size);
+                }
+            }
+
+            Gizmos.matrix = oldMatrix;
+            Gizmos.color = oldColor;
+
+            Gizmos.DrawIcon(navSurface.transform.position, "NavMeshSurface Icon", true);
+        }
+
+        void OnSceneGUI()
+        {
+            if (!editingCollider)
+                return;
+
+            var navSurface = (NavMeshSurface)target;
+            var color = navSurface.enabled ? s_HandleColor : s_HandleColorDisabled;
+            var localToWorld = Matrix4x4.TRS(navSurface.transform.position, navSurface.transform.rotation, Vector3.one);
+            using (new Handles.DrawingScope(color, localToWorld))
+            {
+                m_BoundsHandle.center = navSurface.center;
+                m_BoundsHandle.size = navSurface.size;
+
+                EditorGUI.BeginChangeCheck();
+                m_BoundsHandle.DrawHandle();
+                if (EditorGUI.EndChangeCheck())
+                {
+                    Undo.RecordObject(navSurface, "Modified NavMesh Surface");
+                    Vector3 center = m_BoundsHandle.center;
+                    Vector3 size = m_BoundsHandle.size;
+                    navSurface.center = center;
+                    navSurface.size = size;
+                    EditorUtility.SetDirty(target);
+                }
+            }
+        }
+
+        [MenuItem("GameObject/Navigation/NavMesh Surface", false, 2000)]
+        public static void CreateNavMeshSurface(MenuCommand menuCommand)
+        {
+            var parent = menuCommand.context as GameObject;
+            var go = NavMeshComponentsGUIUtility.CreateAndSelectGameObject("NavMesh Surface", parent);
+            go.AddComponent<NavMeshSurface>();
+            var view = SceneView.lastActiveSceneView;
+            if (view != null)
+                view.MoveToView(go.transform);
+        }
+    }
+}

Assets/Scripts/PathFinding/NavMeshComponents/Editor/NavMeshSurfaceEditor.cs.meta

@@ -0,0 +1,11 @@
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+guid: 3a7b2ae8284a9b14abd6d688cc877cef
+MonoImporter:
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Assets/Scripts/PathFinding/NavMeshComponents/Editor/RootSources2dEditor.cs

@@ -0,0 +1,39 @@
+using UnityEngine.AI;
+using UnityEngine;
+using UnityEditor;
+using NavMeshPlus.Extensions;
+using NavMeshPlus.Components;
+
+namespace NavMeshPlus.Editors.Extensions
+{
+    [CanEditMultipleObjects]
+    [CustomEditor(typeof(RootSources2d))]
+    internal class RootSources2dEditor: Editor
+    {
+        SerializedProperty _rootSources;
+        void OnEnable()
+        {
+            _rootSources = serializedObject.FindProperty("_rootSources");
+        }
+
+        public override void OnInspectorGUI()
+        {
+            serializedObject.Update();
+    
+            var surf = target as RootSources2d;
+            EditorGUILayout.HelpBox("Add GameObjects to create NavMesh form it and it's ancestors", MessageType.Info);
+
+            if (surf.NavMeshSurfaceOwner.collectObjects != CollectObjects.Children)
+            {
+                EditorGUILayout.Space();
+                EditorGUILayout.HelpBox("Root Sources are only suitable for 'CollectObjects - Children'", MessageType.Info);
+                EditorGUILayout.Space();
+
+            }
+            EditorGUILayout.PropertyField(_rootSources);
+
+            serializedObject.ApplyModifiedProperties();
+        }
+    }
+
+}

Assets/Scripts/PathFinding/NavMeshComponents/Editor/RootSources2dEditor.cs.meta

@@ -0,0 +1,11 @@
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Assets/Scripts/PathFinding/NavMeshComponents/Scripts.meta

@@ -0,0 +1,8 @@
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Assets/Scripts/PathFinding/NavMeshComponents/Scripts/AgentOverride2d.cs

@@ -0,0 +1,36 @@
+using UnityEngine;
+using UnityEngine.AI;
+
+namespace NavMeshPlus.Extensions
+{
+    public interface IAgentOverride
+    {
+        void UpdateAgent();
+    }
+
+    public class AgentDefaultOverride : IAgentOverride
+    {
+        public void UpdateAgent()
+        {
+        }
+    }
+    public class AgentOverride2d: MonoBehaviour
+    {
+        public NavMeshAgent Agent { get; private set; }
+        public IAgentOverride agentOverride { get; set; }
+        private void Awake()
+        {
+            Agent = GetComponent<NavMeshAgent>();
+        }
+        private void Start()
+        {
+            Agent.updateRotation = false;
+            Agent.updateUpAxis = false;
+        }
+
+        private void Update()
+        {
+            agentOverride?.UpdateAgent();
+        }
+    }
+}

Assets/Scripts/PathFinding/NavMeshComponents/Scripts/AgentOverride2d.cs.meta

@@ -0,0 +1,11 @@
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Assets/Scripts/PathFinding/NavMeshComponents/Scripts/AgentRotate2d.cs

@@ -0,0 +1,15 @@
+using UnityEngine;
+
+namespace NavMeshPlus.Extensions
+{
+    public class AgentRotate2d: MonoBehaviour
+    {
+        private AgentOverride2d override2D;
+        private void Start()
+        {
+            override2D = GetComponent<AgentOverride2d>();
+            override2D.agentOverride = new RotateAgentInstantly(override2D.Agent, override2D);
+        }
+
+    }
+}

Assets/Scripts/PathFinding/NavMeshComponents/Scripts/AgentRotate2d.cs.meta

@@ -0,0 +1,11 @@
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Assets/Scripts/PathFinding/NavMeshComponents/Scripts/AgentRotateSmooth2d.cs

@@ -0,0 +1,16 @@
+using UnityEngine;
+
+namespace NavMeshPlus.Extensions
+{
+    class AgentRotateSmooth2d: MonoBehaviour
+    {
+        public float angularSpeed;
+        private AgentOverride2d override2D;
+
+        private void Start()
+        {
+            override2D = GetComponent<AgentOverride2d>();
+            override2D.agentOverride = new RotateAgentSmoothly(override2D.Agent, override2D, angularSpeed);
+        }
+    }
+}

Assets/Scripts/PathFinding/NavMeshComponents/Scripts/AgentRotateSmooth2d.cs.meta

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Assets/Scripts/PathFinding/NavMeshComponents/Scripts/CollectSources2d.cs

@@ -0,0 +1,90 @@
+using NavMeshPlus.Components;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.AI;
+using UnityEngine.Tilemaps;
+
+namespace NavMeshPlus.Extensions
+{
+    [ExecuteAlways]
+    [AddComponentMenu("Navigation/Navigation CollectSources2d", 30)]
+    public class CollectSources2d: NavMeshExtension
+    {
+        [SerializeField]
+        bool m_OverrideByGrid;
+        public bool overrideByGrid { get { return m_OverrideByGrid; } set { m_OverrideByGrid = value; } }
+
+        [SerializeField]
+        GameObject m_UseMeshPrefab;
+        public GameObject useMeshPrefab { get { return m_UseMeshPrefab; } set { m_UseMeshPrefab = value; } }
+
+        [SerializeField]
+        bool m_CompressBounds;
+        public bool compressBounds { get { return m_CompressBounds; } set { m_CompressBounds = value; } }
+
+        [SerializeField]
+        Vector3 m_OverrideVector = Vector3.one;
+        public Vector3 overrideVector { get { return m_OverrideVector; } set { m_OverrideVector = value; } }
+
+        public override void CalculateWorldBounds(NavMeshSurface surface, List<NavMeshBuildSource> sources, NavMeshBuilderState navNeshState)
+        {
+            if (surface.collectObjects != CollectObjects.Volume)
+            {
+                navNeshState.worldBounds.Encapsulate(CalculateGridWorldBounds(surface, navNeshState.worldToLocal, navNeshState.worldBounds));
+            }
+        }
+
+        private static Bounds CalculateGridWorldBounds(NavMeshSurface surface, Matrix4x4 worldToLocal, Bounds bounds)
+        {
+            var grid = FindObjectOfType<Grid>();
+            var tilemaps = grid?.GetComponentsInChildren<Tilemap>();
+            if (tilemaps == null || tilemaps.Length < 1)
+            {
+                return bounds;
+            }
+            foreach (var tilemap in tilemaps)
+            {
+                var lbounds = NavMeshSurface.GetWorldBounds(worldToLocal * tilemap.transform.localToWorldMatrix, tilemap.localBounds);
+                bounds.Encapsulate(lbounds);
+                if (!surface.hideEditorLogs)
+                {
+                    Debug.Log($"From Local Bounds [{tilemap.name}]: {tilemap.localBounds}");
+                    Debug.Log($"To World Bounds: {bounds}");
+                }
+            }
+            return bounds;
+        }
+
+        public override void CollectSources(NavMeshSurface surface, List<NavMeshBuildSource> sources, NavMeshBuilderState navNeshState)
+        {
+            if (!surface.hideEditorLogs)
+            {
+                if (!Mathf.Approximately(transform.eulerAngles.x, 270f))
+                {
+                    Debug.LogWarning("NavMeshSurface is not rotated respectively to (x-90;y0;z0). Apply rotation unless intended.");
+                }
+                if (Application.isPlaying)
+                {
+                    if (surface.useGeometry == NavMeshCollectGeometry.PhysicsColliders && Time.frameCount <= 1)
+                    {
+                        Debug.LogWarning("Use Geometry - Physics Colliders option in NavMeshSurface may cause inaccurate mesh bake if executed before Physics update.");
+                    }
+                }
+            }
+            var builder = navNeshState.GetExtraState<NavMeshBuilder2dState>();
+            builder.defaultArea = surface.defaultArea;
+            builder.layerMask = surface.layerMask;
+            builder.agentID = surface.agentTypeID;
+            builder.useMeshPrefab = useMeshPrefab;
+            builder.overrideByGrid = overrideByGrid;
+            builder.compressBounds = compressBounds;
+            builder.overrideVector = overrideVector;
+            builder.CollectGeometry = surface.useGeometry;
+            builder.CollectObjects = (CollectObjects)(int)surface.collectObjects;
+            builder.parent = surface.gameObject;
+            builder.hideEditorLogs = surface.hideEditorLogs;
+            builder.SetRoot(navNeshState.roots);
+            NavMeshBuilder2d.CollectSources(sources, builder);
+        }
+    }
+}

Assets/Scripts/PathFinding/NavMeshComponents/Scripts/CollectSources2d.cs.meta

@@ -0,0 +1,11 @@
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Assets/Scripts/PathFinding/NavMeshComponents/Scripts/CollectSourcesCache2d.cs

@@ -0,0 +1,115 @@
+using NavMeshPlus.Components;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.AI;
+
+namespace NavMeshPlus.Extensions
+{
+    [ExecuteAlways]
+    [AddComponentMenu("Navigation/Navigation CacheSources2d", 30)]
+    public class CollectSourcesCache2d : NavMeshExtension
+    {
+        List<NavMeshBuildSource> _sources;
+        Dictionary<UnityEngine.Object, NavMeshBuildSource> _lookup;
+        private Bounds _sourcesBounds;
+        public bool IsDirty { get; protected set; }
+
+        private NavMeshBuilder2dState _state;
+
+        public int SourcesCount => _sources.Count;
+        public int CahcheCount => _lookup.Count;
+
+        public List<NavMeshBuildSource> Cache { get => _sources; }
+
+        protected override void Awake()
+        {
+            _lookup = new Dictionary<UnityEngine.Object, NavMeshBuildSource>();
+            _sources = new List<NavMeshBuildSource>();
+            IsDirty = false;
+            Order = -1000;
+            _sourcesBounds = new Bounds();
+            base.Awake();
+        }
+        protected override void OnDestroy()
+        {
+            _state?.Dispose();
+            base.OnDestroy();
+        }
+
+        public bool AddSource(GameObject gameObject, NavMeshBuildSource source)
+        {
+            var res = _lookup.ContainsKey(gameObject);
+            if (res)
+            {
+                return UpdateSource(gameObject);
+            }
+            _sources.Add(source);
+            _lookup.Add(gameObject, source);
+            IsDirty = true;
+            return true;
+        }
+        public bool UpdateSource(GameObject gameObject)
+        {
+            var res = _lookup.ContainsKey(gameObject);
+            if(res)
+            {
+                IsDirty = true;
+                var source = _lookup[gameObject];
+                var idx = _sources.IndexOf(source);
+                if (idx >= 0)
+                {
+                    source.transform = Matrix4x4.TRS(gameObject.transform.position, gameObject.transform.rotation, gameObject.transform.lossyScale);
+                    _sources[idx] = source;
+                    _lookup[gameObject] = source;
+                }
+            }
+            return res;
+        }
+
+        public bool RemoveSource(GameObject gameObject)
+        {
+            var res = _lookup.ContainsKey(gameObject);
+            if (res)
+            {
+                IsDirty = true;
+                var source = _lookup[gameObject];
+                _lookup.Remove(gameObject);
+                _sources.Remove(source);
+            }
+            return res;
+        }
+
+        public AsyncOperation UpdateNavMesh(NavMeshData data)
+        {
+            IsDirty = false;
+            return NavMeshBuilder.UpdateNavMeshDataAsync(data, NavMeshSurfaceOwner.GetBuildSettings(), _sources, _sourcesBounds);
+        }
+        public AsyncOperation UpdateNavMesh()
+        {
+            return UpdateNavMesh(NavMeshSurfaceOwner.navMeshData);
+        }
+        public override void CollectSources(NavMeshSurface surface, List<NavMeshBuildSource> sources, NavMeshBuilderState navMeshState)
+        {
+            _lookup.Clear();
+            IsDirty = false;
+            _state?.Dispose();
+            _state = navMeshState.GetExtraState<NavMeshBuilder2dState>(false);
+            _state.lookupCallback = LookupCallback;
+        }
+
+        private void LookupCallback(UnityEngine.Object component, NavMeshBuildSource source)
+        {
+            if (component == null)
+            {
+                return;
+            }
+            _lookup.Add(component, source);
+        }
+
+        public override void PostCollectSources(NavMeshSurface surface, List<NavMeshBuildSource> sources, NavMeshBuilderState navNeshState)
+        {
+            _sourcesBounds = navNeshState.worldBounds;
+            _sources = sources;
+        }
+    }
+}

Assets/Scripts/PathFinding/NavMeshComponents/Scripts/CollectSourcesCache2d.cs.meta

@@ -0,0 +1,11 @@
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Assets/Scripts/PathFinding/NavMeshComponents/Scripts/NavMeshAgentAttribute.cs

@@ -0,0 +1,12 @@
+using UnityEngine;
+
+//***********************************************************************************
+// Contributed by author jl-randazzo github.com/jl-randazzo
+//***********************************************************************************
+namespace NavMeshPlus.Extensions
+{
+    [System.Serializable]
+    public class NavMeshAgentAttribute : PropertyAttribute
+    {
+    }
+}

Assets/Scripts/PathFinding/NavMeshComponents/Scripts/NavMeshAgentAttribute.cs.meta

@@ -0,0 +1,11 @@
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Assets/Scripts/PathFinding/NavMeshComponents/Scripts/NavMeshAreaAttribute.cs

@@ -0,0 +1,13 @@
+using UnityEngine;
+
+//***********************************************************************************
+// Contributed by author jl-randazzo github.com/jl-randazzo
+//***********************************************************************************
+namespace NavMeshPlus.Extensions
+{
+    [System.Serializable]
+    // See also NavMeshAreaAttributePropertyDrawer
+    public class NavMeshAreaAttribute : PropertyAttribute
+    {
+    }
+}

Assets/Scripts/PathFinding/NavMeshComponents/Scripts/NavMeshAreaAttribute.cs.meta

@@ -0,0 +1,11 @@
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Assets/Scripts/PathFinding/NavMeshComponents/Scripts/NavMeshBuilder2d.cs

@@ -0,0 +1,393 @@
+using NavMeshPlus.Components;
+using System;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.AI;
+using UnityEngine.SceneManagement;
+using UnityEngine.Tilemaps;
+using Object = UnityEngine.Object;
+
+namespace NavMeshPlus.Extensions
+{
+    class NavMeshBuilder2dState: IDisposable
+    {
+        public Dictionary<Sprite, Mesh> spriteMeshMap;
+        public Dictionary<uint, Mesh> coliderMeshMap;
+        public Action<UnityEngine.Object, NavMeshBuildSource> lookupCallback;
+        public int defaultArea;
+        public int layerMask;
+        public int agentID;
+        public bool overrideByGrid;
+        public GameObject useMeshPrefab;
+        public bool compressBounds;
+        public Vector3 overrideVector;
+        public NavMeshCollectGeometry CollectGeometry;
+        public CollectObjects CollectObjects;
+        public GameObject parent;
+        public bool hideEditorLogs;
+        
+        protected IEnumerable<GameObject> _root;
+        private bool _disposed;
+
+        public IEnumerable<GameObject> Root => _root ?? GetRoot();
+
+        public NavMeshBuilder2dState()
+        {
+            spriteMeshMap = new Dictionary<Sprite, Mesh>();
+            coliderMeshMap = new Dictionary<uint, Mesh>();
+            _root = null;
+        }
+
+        public Mesh GetMesh(Sprite sprite)
+        {
+            Mesh mesh;
+            if (spriteMeshMap.ContainsKey(sprite))
+            {
+                mesh = spriteMeshMap[sprite];
+            }
+            else
+            {
+                mesh = new Mesh();
+                NavMeshBuilder2d.sprite2mesh(sprite, mesh);
+                spriteMeshMap.Add(sprite, mesh);
+            }
+            return mesh;
+        }
+
+        public Mesh GetMesh(Collider2D collider)
+        {
+#if UNITY_2019_3_OR_NEWER
+            Mesh mesh;
+            uint hash = collider.GetShapeHash();
+            if (coliderMeshMap.ContainsKey(hash))
+            {
+                mesh = coliderMeshMap[hash];
+            }
+            else
+            {
+                mesh = collider.CreateMesh(false, false);
+                coliderMeshMap.Add(hash, mesh);
+            }
+            return mesh;
+#else
+            throw new InvalidOperationException("PhysicsColliders supported in Unity 2019.3 and higher.");
+#endif
+        }
+        public void SetRoot(IEnumerable<GameObject> root)
+        {
+            _root = root;
+        }
+        public IEnumerable<GameObject> GetRoot()
+        {
+            switch (CollectObjects)
+            {
+                case CollectObjects.Children: return new[] { parent };
+                case CollectObjects.Volume:
+                case CollectObjects.All:
+                default:
+                    {
+                        var list = new List<GameObject>();
+                        var roots = new List<GameObject>();
+                        for (int i = 0; i < SceneManager.sceneCount; ++i)
+                        {
+                            var s = SceneManager.GetSceneAt(i);
+                            if (!s.isLoaded) continue;
+                            s.GetRootGameObjects(list);
+                            roots.AddRange(list);
+                        }
+                        return roots;
+                    }
+            }
+        }
+
+        protected virtual void Dispose(bool disposing)
+        {
+            if (_disposed)
+            {
+                return;
+            }
+
+            if (disposing)
+            {
+                // TODO: dispose managed state (managed objects).
+                foreach (var item in spriteMeshMap)
+                {
+#if UNITY_EDITOR
+                    Object.DestroyImmediate(item.Value);
+#else 
+                    Object.Destroy(item.Value);
+#endif
+                }
+                foreach (var item in coliderMeshMap)
+                {
+#if UNITY_EDITOR
+                    Object.DestroyImmediate(item.Value);
+#else
+                    Object.Destroy(item.Value);
+#endif
+                }
+                spriteMeshMap.Clear();
+                coliderMeshMap.Clear();
+            }
+
+            // TODO: free unmanaged resources (unmanaged objects) and override a finalizer below.
+            // TODO: set large fields to null.
+
+            _disposed = true;
+        }
+
+        public void Dispose()
+        {
+            // Dispose of unmanaged resources.
+            Dispose(true);
+            // Suppress finalization.
+            GC.SuppressFinalize(this);
+        }
+    }
+
+    class NavMeshBuilder2d
+    {
+        public static void CollectSources(List<NavMeshBuildSource> sources, NavMeshBuilder2dState builder)
+        {
+            foreach (var it in builder.Root)
+            {
+                CollectSources(it, sources, builder);
+            }
+            if (!builder.hideEditorLogs) Debug.Log("Sources " + sources.Count);
+        }
+
+        public static void CollectSources(GameObject root, List<NavMeshBuildSource> sources, NavMeshBuilder2dState builder)
+        {
+            foreach (var modifier in root.GetComponentsInChildren<NavMeshModifier>())
+            {
+                if (((0x1 << modifier.gameObject.layer) & builder.layerMask) == 0)
+                {
+                    continue;
+                }
+                if (!modifier.AffectsAgentType(builder.agentID))
+                {
+                    continue;
+                }
+                int area = builder.defaultArea;
+                //if it is walkable
+                if (builder.defaultArea != 1 && !modifier.ignoreFromBuild)
+                {
+                    AddDefaultWalkableTilemap(sources, builder, modifier);
+                }
+
+                if (modifier.overrideArea)
+                {
+                    area = modifier.area;
+                }
+                if (!modifier.ignoreFromBuild)
+                {
+                    CollectSources(sources, builder, modifier, area);
+                }
+            }
+        }
+
+        public static void CollectSources(List<NavMeshBuildSource> sources, NavMeshBuilder2dState builder, NavMeshModifier modifier, int area)
+        {
+            if (builder.CollectGeometry == NavMeshCollectGeometry.PhysicsColliders)
+            {
+                var collider = modifier.GetComponent<Collider2D>();
+                if (collider != null)
+                {
+                    CollectSources(sources, collider, area, builder);
+                }
+            }
+            else
+            {
+                var tilemap = modifier.GetComponent<Tilemap>();
+                if (tilemap != null)
+                {
+                    CollectTileSources(sources, tilemap, area, builder);
+                }
+                var sprite = modifier.GetComponent<SpriteRenderer>();
+                if (sprite != null)
+                {
+                    CollectSources(sources, sprite, area, builder);
+                }
+            }
+        }
+
+        private static void AddDefaultWalkableTilemap(List<NavMeshBuildSource> sources, NavMeshBuilder2dState builder, NavMeshModifier modifier)
+        {
+            var tilemap = modifier.GetComponent<Tilemap>();
+            if (tilemap != null)
+            {
+                if (builder.compressBounds)
+                {
+                    tilemap.CompressBounds();
+                }
+
+                if (!builder.hideEditorLogs) Debug.Log($"Walkable Bounds [{tilemap.name}]: {tilemap.localBounds}");
+                var box = BoxBoundSource(NavMeshSurface.GetWorldBounds(tilemap.transform.localToWorldMatrix, tilemap.localBounds));
+                box.area = builder.defaultArea;
+                sources.Add(box);
+            }
+        }
+
+        public static void CollectSources(List<NavMeshBuildSource> sources, SpriteRenderer spriteRenderer, int area, NavMeshBuilder2dState builder)
+        {
+            if (spriteRenderer == null || spriteRenderer.sprite == null)
+            {
+                return;
+            }
+            Mesh mesh;
+            mesh = builder.GetMesh(spriteRenderer.sprite);
+            if (mesh == null)
+            {
+                if (!builder.hideEditorLogs) Debug.Log($"{spriteRenderer.name} mesh is null");
+                return;
+            }
+            var src = new NavMeshBuildSource();
+            src.shape = NavMeshBuildSourceShape.Mesh;
+            src.component = spriteRenderer;
+            src.area = area;
+            src.transform = Matrix4x4.TRS(Vector3.Scale(spriteRenderer.transform.position, builder.overrideVector), spriteRenderer.transform.rotation, spriteRenderer.transform.lossyScale);
+            src.sourceObject = mesh;
+            sources.Add(src);
+
+            builder.lookupCallback?.Invoke(spriteRenderer.gameObject, src);
+        }
+
+        public static void CollectSources(List<NavMeshBuildSource> sources, Collider2D collider, int area, NavMeshBuilder2dState builder)
+        { 
+            if (collider.usedByComposite)
+            {
+                collider = collider.GetComponent<CompositeCollider2D>();
+            }
+
+            Mesh mesh;
+            mesh = builder.GetMesh(collider);
+            if (mesh == null)
+            {
+                if (!builder.hideEditorLogs) Debug.Log($"{collider.name} mesh is null");
+                return;
+            }
+
+            var src = new NavMeshBuildSource();
+            src.shape = NavMeshBuildSourceShape.Mesh;
+            src.area = area;
+            src.component = collider;
+            src.sourceObject = mesh;
+            if (collider.attachedRigidbody)
+            {
+                src.transform = Matrix4x4.TRS(Vector3.Scale(collider.attachedRigidbody.transform.position, builder.overrideVector), collider.attachedRigidbody.transform.rotation, Vector3.one);
+            }
+            else
+            {
+                src.transform = Matrix4x4.identity;
+            }
+
+            sources.Add(src);
+
+            builder.lookupCallback?.Invoke(collider.gameObject, src);
+        }
+
+        public static void CollectTileSources(List<NavMeshBuildSource> sources, Tilemap tilemap, int area, NavMeshBuilder2dState builder)
+        {
+            var bound = tilemap.cellBounds;
+
+            var modifierTilemap = tilemap.GetComponent<NavMeshModifierTilemap>();
+
+            var vec3int = new Vector3Int(0, 0, 0);
+
+            var size = new Vector3(tilemap.layoutGrid.cellSize.x, tilemap.layoutGrid.cellSize.y, 0);
+            Mesh sharedMesh = null;
+            Quaternion rot = default;
+
+            if (builder.useMeshPrefab != null)
+            {
+                sharedMesh = builder.useMeshPrefab.GetComponent<MeshFilter>().sharedMesh;
+                size = builder.useMeshPrefab.transform.localScale;
+                rot = builder.useMeshPrefab.transform.rotation;
+            }
+            for (int i = bound.xMin; i < bound.xMax; i++)
+            {
+                for (int j = bound.yMin; j < bound.yMax; j++)
+                {
+                    var src = new NavMeshBuildSource();
+                    src.area = area;
+
+                    vec3int.x = i;
+                    vec3int.y = j;
+                    if (!tilemap.HasTile(vec3int))
+                    {
+                        continue;
+                    }
+
+                    CollectTile(tilemap, builder, vec3int, size, sharedMesh, rot, ref src);
+                    if (modifierTilemap && modifierTilemap.TryGetTileModifier(vec3int, tilemap, out NavMeshModifierTilemap.TileModifier tileModifier))
+                    {
+                        src.area = tileModifier.overrideArea ? tileModifier.area : area;
+                    }    
+                    sources.Add(src);
+
+                    builder.lookupCallback?.Invoke(tilemap.GetInstantiatedObject(vec3int), src);
+                }
+            }
+        }
+
+        private static void CollectTile(Tilemap tilemap, NavMeshBuilder2dState builder, Vector3Int vec3int, Vector3 size, Mesh sharedMesh, Quaternion rot, ref NavMeshBuildSource src)
+        {
+            if (!builder.overrideByGrid && tilemap.GetColliderType(vec3int) == Tile.ColliderType.Sprite)
+            {
+                var sprite = tilemap.GetSprite(vec3int);
+                if (sprite != null)
+                {
+                    Mesh mesh = builder.GetMesh(sprite);
+                    src.component = tilemap;
+                    src.transform = GetCellTransformMatrix(tilemap, builder.overrideVector, vec3int);
+                    src.shape = NavMeshBuildSourceShape.Mesh;
+                    src.sourceObject = mesh;
+                }
+            }
+            else if (builder.useMeshPrefab != null || (builder.overrideByGrid && builder.useMeshPrefab != null))
+            {
+                src.transform = Matrix4x4.TRS(Vector3.Scale(tilemap.GetCellCenterWorld(vec3int), builder.overrideVector), rot, size);
+                src.shape = NavMeshBuildSourceShape.Mesh;
+                src.sourceObject = sharedMesh;
+            }
+            else //default to box
+            {
+                src.transform = GetCellTransformMatrix(tilemap, builder.overrideVector, vec3int);
+                src.shape = NavMeshBuildSourceShape.Box;
+                src.size = size;
+            }
+        }
+
+        public static Matrix4x4 GetCellTransformMatrix(Tilemap tilemap, Vector3 scale, Vector3Int vec3int)
+        {
+            return Matrix4x4.TRS(Vector3.Scale(tilemap.GetCellCenterWorld(vec3int), scale) - tilemap.layoutGrid.cellGap, tilemap.transform.rotation, tilemap.transform.lossyScale) * tilemap.orientationMatrix * tilemap.GetTransformMatrix(vec3int);
+        }
+
+        internal static void sprite2mesh(Sprite sprite, Mesh mesh)
+        {
+            Vector3[] vert = new Vector3[sprite.vertices.Length];
+            for (int i = 0; i < sprite.vertices.Length; i++)
+            {
+                vert[i] = new Vector3(sprite.vertices[i].x, sprite.vertices[i].y, 0);
+            }
+            mesh.vertices = vert;
+            mesh.uv = sprite.uv;
+            int[] tri = new int[sprite.triangles.Length];
+            for (int i = 0; i < sprite.triangles.Length; i++)
+            {
+                tri[i] = sprite.triangles[i];
+            }
+            mesh.triangles = tri;
+        }
+
+        static private NavMeshBuildSource BoxBoundSource(Bounds localBounds)
+        {
+            var src = new NavMeshBuildSource();
+            src.transform = Matrix4x4.Translate(localBounds.center);
+            src.shape = NavMeshBuildSourceShape.Box;
+            src.size = localBounds.size;
+            src.area = 0;
+            return src;
+        }
+    }
+}

Assets/Scripts/PathFinding/NavMeshComponents/Scripts/NavMeshBuilder2d.cs.meta

@@ -0,0 +1,11 @@
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Assets/Scripts/PathFinding/NavMeshComponents/Scripts/NavMeshBuilderState.cs

@@ -0,0 +1,109 @@
+using System;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace NavMeshPlus.Extensions
+{
+    public class NavMeshBuilderState: IDisposable
+    {
+        public Matrix4x4 worldToLocal;
+        public Bounds worldBounds;
+        public IEnumerable<GameObject> roots;
+        private CompositeDisposable disposable;
+        private Dictionary<Type, System.Object> mExtraState;
+        private bool _disposed;
+
+        public T GetExtraState<T>(bool dispose = true) where T : class, new()
+        {
+            if (mExtraState == null)
+            { 
+                mExtraState = new Dictionary<Type, System.Object>();
+                disposable = new CompositeDisposable();
+            }
+            if (!mExtraState.TryGetValue(typeof(T), out System.Object extra))
+            {
+                extra = mExtraState[typeof(T)] = new T();
+                if (dispose)
+                {
+                    disposable.Add(extra);
+                }
+            }
+
+            return extra as T;
+        }
+
+        protected virtual void Dispose(bool disposing)
+        {
+            if (_disposed)
+            {
+                return;
+            }
+
+            if (disposing)
+            {
+                // TODO: dispose managed state (managed objects).
+                disposable?.Dispose();
+            }
+
+            // TODO: free unmanaged resources (unmanaged objects) and override a finalizer below.
+            // TODO: set large fields to null.
+
+            _disposed = true;
+        }
+
+        public void Dispose()
+        {
+            // Dispose of unmanaged resources.
+            Dispose(true);
+            // Suppress finalization.
+            GC.SuppressFinalize(this);
+        }
+    }
+    partial class CompositeDisposable: IDisposable
+    {
+        private bool _disposed;
+        private List<IDisposable> extraStates = new List<IDisposable>();
+
+        public void Add(IDisposable dispose)
+        {
+            extraStates.Add(dispose);
+        }
+        public void Add(object dispose)
+        {
+            if(dispose is IDisposable)
+            {
+                extraStates.Add((IDisposable)dispose);
+            }
+        }
+        protected virtual void Dispose(bool disposing)
+        {
+            if (_disposed)
+            {
+                return;
+            }
+
+            if (disposing)
+            {
+                // TODO: dispose managed state (managed objects).
+                foreach (var item in extraStates)
+                {
+                    item?.Dispose();
+                }
+                extraStates.Clear();
+            }
+
+            // TODO: free unmanaged resources (unmanaged objects) and override a finalizer below.
+            // TODO: set large fields to null.
+
+            _disposed = true;
+        }
+
+        public void Dispose()
+        {
+            // Dispose of unmanaged resources.
+            Dispose(true);
+            // Suppress finalization.
+            GC.SuppressFinalize(this);
+        }
+    }
+}

Assets/Scripts/PathFinding/NavMeshComponents/Scripts/NavMeshBuilderState.cs.meta

@@ -0,0 +1,11 @@
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Assets/Scripts/PathFinding/NavMeshComponents/Scripts/NavMeshComponents.asmdef

@@ -0,0 +1,20 @@
+{
+    "name": "NavMeshPlus",
+    "rootNamespace": "",
+    "references": [],
+    "includePlatforms": [],
+    "excludePlatforms": [],
+    "allowUnsafeCode": false,
+    "overrideReferences": false,
+    "precompiledReferences": [],
+    "autoReferenced": true,
+    "defineConstraints": [],
+    "versionDefines": [
+        {
+            "name": "com.unity.modules.terrain",
+            "expression": "0",
+            "define": "IS_TERRAIN_USED"
+        }
+    ],
+    "noEngineReferences": false
+}

Assets/Scripts/PathFinding/NavMeshComponents/Scripts/NavMeshComponents.asmdef.meta

@@ -0,0 +1,7 @@
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+guid: 299beb10465c46f41abeaf10478b4727
+AssemblyDefinitionImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Scripts/PathFinding/NavMeshComponents/Scripts/NavMeshExtension.cs

@@ -0,0 +1,58 @@
+using NavMeshPlus.Components;
+using System;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.AI;
+
+namespace NavMeshPlus.Extensions
+{
+    public abstract class NavMeshExtension: MonoBehaviour
+    {
+        public int Order { get; protected set; }
+        public virtual void CollectSources(NavMeshSurface surface, List<NavMeshBuildSource> sources, NavMeshBuilderState navNeshState) { }
+        public virtual void CalculateWorldBounds(NavMeshSurface surface, List<NavMeshBuildSource> sources, NavMeshBuilderState navNeshState) { }
+        public virtual void PostCollectSources(NavMeshSurface surface, List<NavMeshBuildSource> sources, NavMeshBuilderState navNeshState) { }
+        public NavMeshSurface NavMeshSurfaceOwner
+        {
+            get
+            {
+                if (m_navMeshOwner == null)
+                    m_navMeshOwner = GetComponent<NavMeshSurface>();
+                return m_navMeshOwner;
+            }
+        }
+        NavMeshSurface m_navMeshOwner;
+
+        protected virtual void Awake()
+        {
+            ConnectToVcam(true);
+        }
+#if UNITY_EDITOR
+        [UnityEditor.Callbacks.DidReloadScripts]
+        static void OnScriptReload()
+        {
+            var extensions = Resources.FindObjectsOfTypeAll(
+                typeof(NavMeshExtension)) as NavMeshExtension[];
+            foreach (var e in extensions)
+                e.ConnectToVcam(true);
+        }
+#endif
+        protected virtual void OnEnable() { }
+        protected virtual void OnDestroy()
+        {
+            ConnectToVcam(false);
+        }
+        protected virtual void ConnectToVcam(bool connect)
+        {
+            if (connect && NavMeshSurfaceOwner == null)
+                Debug.LogError("NevMeshExtension requires a NavMeshSurface component");
+            if (NavMeshSurfaceOwner != null)
+            {
+                if (connect)
+                    NavMeshSurfaceOwner.NevMeshExtensions.Add(this, Order);
+                else
+                    NavMeshSurfaceOwner.NevMeshExtensions.Remove(this);
+            }
+        }
+    }
+}

Assets/Scripts/PathFinding/NavMeshComponents/Scripts/NavMeshExtension.cs.meta

@@ -0,0 +1,11 @@
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Assets/Scripts/PathFinding/NavMeshComponents/Scripts/NavMeshExtensionsProvider.cs

@@ -0,0 +1,57 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace NavMeshPlus.Extensions
+{
+    public interface INavMeshExtensionsProvider
+    {
+        int Count { get; }
+        NavMeshExtension this[int index] { get; }
+        void Add(NavMeshExtension extension, int order);
+        void Remove(NavMeshExtension extension);
+    }
+    internal class NavMeshExtensionMeta
+    {
+        public int order;
+
+        public NavMeshExtensionMeta(int order, NavMeshExtension extension)
+        {
+            this.order = order;
+            this.extension = extension;
+        }
+
+        public NavMeshExtension extension;
+    }
+    internal class NavMeshExtensionsProvider : INavMeshExtensionsProvider
+    {
+        List<NavMeshExtensionMeta> _extensions = new List<NavMeshExtensionMeta>();
+        static Comparer<NavMeshExtensionMeta> Comparer = Comparer<NavMeshExtensionMeta>.Create((x, y) => x.order > y.order ? 1 : x.order < y.order ? -1 : 0);
+        public NavMeshExtension this[int index] => _extensions[index].extension;
+
+        public int Count => _extensions.Count;
+
+        public void Add(NavMeshExtension extension, int order)
+        {
+            var meta = new NavMeshExtensionMeta(order, extension);
+            var at = _extensions.BinarySearch(meta, Comparer);
+            if (at < 0)
+            {
+                _extensions.Add(meta);
+                _extensions.Sort(Comparer);
+            }
+            else
+            {
+                _extensions.Insert(at, meta);
+            }
+        }
+
+        public void Remove(NavMeshExtension extension)
+        {
+            _extensions.RemoveAll(x => x.extension = extension);
+        }
+    }
+}

Assets/Scripts/PathFinding/NavMeshComponents/Scripts/NavMeshExtensionsProvider.cs.meta

@@ -0,0 +1,11 @@
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Assets/Scripts/PathFinding/NavMeshComponents/Scripts/NavMeshLink.cs

@@ -0,0 +1,175 @@
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.AI;
+using NavMeshPlus.Extensions;
+
+namespace NavMeshPlus.Components
+{
+    [ExecuteInEditMode]
+    [DefaultExecutionOrder(-101)]
+    [AddComponentMenu("Navigation/Navigation Link", 33)]
+    [HelpURL("https://github.com/Unity-Technologies/NavMeshPlus#documentation-draft")]
+    public class NavMeshLink : MonoBehaviour
+    {
+        [SerializeField, NavMeshAgent]
+        int m_AgentTypeID;
+        public int agentTypeID { get { return m_AgentTypeID; } set { m_AgentTypeID = value; UpdateLink(); } }
+
+        [SerializeField]
+        Vector3 m_StartPoint = new Vector3(0.0f, 0.0f, -2.5f);
+        public Vector3 startPoint { get { return m_StartPoint; } set { m_StartPoint = value; UpdateLink(); } }
+
+        [SerializeField]
+        Vector3 m_EndPoint = new Vector3(0.0f, 0.0f, 2.5f);
+        public Vector3 endPoint { get { return m_EndPoint; } set { m_EndPoint = value; UpdateLink(); } }
+
+        [SerializeField]
+        float m_Width;
+        public float width { get { return m_Width; } set { m_Width = value; UpdateLink(); } }
+
+        [SerializeField]
+        int m_CostModifier = -1;
+        public int costModifier { get { return m_CostModifier; } set { m_CostModifier = value; UpdateLink(); } }
+
+        [SerializeField]
+        bool m_Bidirectional = true;
+        public bool bidirectional { get { return m_Bidirectional; } set { m_Bidirectional = value; UpdateLink(); } }
+
+        [SerializeField]
+        bool m_AutoUpdatePosition;
+        public bool autoUpdate { get { return m_AutoUpdatePosition; } set { SetAutoUpdate(value); } }
+
+        [SerializeField, NavMeshArea]
+        int m_Area;
+        public int area { get { return m_Area; } set { m_Area = value; UpdateLink(); } }
+
+        NavMeshLinkInstance m_LinkInstance = new NavMeshLinkInstance();
+
+        Vector3 m_LastPosition = Vector3.zero;
+        Quaternion m_LastRotation = Quaternion.identity;
+
+        static readonly List<NavMeshLink> s_Tracked = new List<NavMeshLink>();
+
+        void OnEnable()
+        {
+            AddLink();
+            if (m_AutoUpdatePosition && m_LinkInstance.valid)
+                AddTracking(this);
+        }
+
+        void OnDisable()
+        {
+            RemoveTracking(this);
+            m_LinkInstance.Remove();
+        }
+
+        public void UpdateLink()
+        {
+            m_LinkInstance.Remove();
+            AddLink();
+        }
+
+        static void AddTracking(NavMeshLink link)
+        {
+#if UNITY_EDITOR
+            if (s_Tracked.Contains(link))
+            {
+                Debug.LogError("Link is already tracked: " + link);
+                return;
+            }
+#endif
+
+            if (s_Tracked.Count == 0)
+                NavMesh.onPreUpdate += UpdateTrackedInstances;
+
+            s_Tracked.Add(link);
+        }
+
+        static void RemoveTracking(NavMeshLink link)
+        {
+            s_Tracked.Remove(link);
+
+            if (s_Tracked.Count == 0)
+                NavMesh.onPreUpdate -= UpdateTrackedInstances;
+        }
+
+        void SetAutoUpdate(bool value)
+        {
+            if (m_AutoUpdatePosition == value)
+                return;
+            m_AutoUpdatePosition = value;
+            if (value)
+                AddTracking(this);
+            else
+                RemoveTracking(this);
+        }
+
+        void AddLink()
+        {
+#if UNITY_EDITOR
+            if (m_LinkInstance.valid)
+            {
+                Debug.LogError("Link is already added: " + this);
+                return;
+            }
+#endif
+
+            var link = new NavMeshLinkData();
+            link.startPosition = m_StartPoint;
+            link.endPosition = m_EndPoint;
+            link.width = m_Width;
+            link.costModifier = m_CostModifier;
+            link.bidirectional = m_Bidirectional;
+            link.area = m_Area;
+            link.agentTypeID = m_AgentTypeID;
+            m_LinkInstance = NavMesh.AddLink(link, transform.position, transform.rotation);
+            if (m_LinkInstance.valid)
+                m_LinkInstance.owner = this;
+
+            m_LastPosition = transform.position;
+            m_LastRotation = transform.rotation;
+        }
+
+        bool HasTransformChanged()
+        {
+            if (m_LastPosition != transform.position) return true;
+            if (m_LastRotation != transform.rotation) return true;
+            return false;
+        }
+
+        void OnDidApplyAnimationProperties()
+        {
+            UpdateLink();
+        }
+
+        static void UpdateTrackedInstances()
+        {
+            foreach (var instance in s_Tracked)
+            {
+                if (instance.HasTransformChanged())
+                    instance.UpdateLink();
+            }
+        }
+
+#if UNITY_EDITOR
+        void OnValidate()
+        {
+            m_Width = Mathf.Max(0.0f, m_Width);
+
+            if (!m_LinkInstance.valid)
+                return;
+
+            UpdateLink();
+
+            if (!m_AutoUpdatePosition)
+            {
+                RemoveTracking(this);
+            }
+            else if (!s_Tracked.Contains(this))
+            {
+                AddTracking(this);
+            }
+        }
+#endif
+    }
+}

Assets/Scripts/PathFinding/NavMeshComponents/Scripts/NavMeshLink.cs.meta

@@ -0,0 +1,11 @@
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Assets/Scripts/PathFinding/NavMeshComponents/Scripts/NavMeshModifier.cs

@@ -0,0 +1,56 @@
+using System.Collections.Generic;
+using UnityEngine;
+using NavMeshPlus.Extensions;
+
+namespace NavMeshPlus.Components
+{
+    [ExecuteInEditMode]
+    [AddComponentMenu("Navigation/Navigation Modifier", 32)]
+    [HelpURL("https://github.com/Unity-Technologies/NavMeshComponents#documentation-draft")]
+    public class NavMeshModifier : MonoBehaviour
+    {
+        [SerializeField]
+        bool m_OverrideArea;
+        public bool overrideArea { get { return m_OverrideArea; } set { m_OverrideArea = value; } }
+
+        [SerializeField, NavMeshArea]
+        int m_Area;
+        public int area { get { return m_Area; } set { m_Area = value; } }
+
+        [SerializeField]
+        bool m_IgnoreFromBuild;
+        public bool ignoreFromBuild { get { return m_IgnoreFromBuild; } set { m_IgnoreFromBuild = value; } }
+
+        // List of agent types the modifier is applied for.
+        // Special values: empty == None, m_AffectedAgents[0] =-1 == All.
+        [SerializeField]
+        List<int> m_AffectedAgents = new List<int>(new int[] { -1 });    // Default value is All
+
+        static readonly List<NavMeshModifier> s_NavMeshModifiers = new List<NavMeshModifier>();
+
+        public static List<NavMeshModifier> activeModifiers
+        {
+            get { return s_NavMeshModifiers; }
+        }
+
+        void OnEnable()
+        {
+            if (!s_NavMeshModifiers.Contains(this))
+                s_NavMeshModifiers.Add(this);
+        }
+
+        void OnDisable()
+        {
+            s_NavMeshModifiers.Remove(this);
+        }
+
+        public bool AffectsAgentType(int agentTypeID)
+        {
+            if (m_AffectedAgents.Count == 0)
+                return false;
+            if (m_AffectedAgents[0] == -1)
+                return true;
+            return m_AffectedAgents.IndexOf(agentTypeID) != -1;
+        }
+    }
+}

Assets/Scripts/PathFinding/NavMeshComponents/Scripts/NavMeshModifier.cs.meta

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Assets/Scripts/PathFinding/NavMeshComponents/Scripts/NavMeshModifierTilemap.cs

@@ -0,0 +1,69 @@
+using System.Collections.Generic;
+using System.Linq;
+using UnityEngine;
+using NavMeshPlus.Extensions;
+using UnityEngine.Tilemaps;
+
+//***********************************************************************************
+// Contributed by author jl-randazzo github.com/jl-randazzo
+//***********************************************************************************
+namespace NavMeshPlus.Components
+{
+    [AddComponentMenu("Navigation/Navigation Modifier Tilemap", 33)]
+    [HelpURL("https://github.com/Unity-Technologies/NavMeshComponents#documentation-draft")]
+    [RequireComponent(typeof(Tilemap))]
+    [RequireComponent(typeof(NavMeshModifier))]
+    [DisallowMultipleComponent]
+    [ExecuteInEditMode]
+    public class NavMeshModifierTilemap : MonoBehaviour
+    {
+        [System.Serializable]
+        public struct TileModifier
+        {
+            public TileBase tile;
+            public bool overrideArea;
+            [NavMeshArea] public int area;
+        }
+
+        private class MatchingTileComparator : IEqualityComparer<TileModifier>
+        {
+            public static readonly IEqualityComparer<TileModifier> Instance = new MatchingTileComparator();
+            public bool Equals(TileModifier a, TileModifier b) => a.tile == b.tile;
+            public int GetHashCode(TileModifier tileModifier) => tileModifier.GetHashCode();
+        }
+
+        [SerializeField]
+        List<TileModifier> m_TileModifiers = new List<TileModifier>();
+
+        private Dictionary<TileBase, TileModifier> m_ModifierMap;
+
+        public Dictionary<TileBase, TileModifier> GetModifierMap() => m_TileModifiers.Where(mod => mod.tile != null).Distinct(MatchingTileComparator.Instance).ToDictionary(mod => mod.tile);
+
+        void OnEnable()
+        {
+            CacheModifiers();
+        }
+
+        public void CacheModifiers()
+        {
+            m_ModifierMap = GetModifierMap();
+        }
+
+#if UNITY_EDITOR
+        public bool HasDuplicateTileModifiers()
+        {
+            return m_TileModifiers.Count != m_TileModifiers.Distinct(MatchingTileComparator.Instance).Count();
+        }
+#endif // UNITY_EDITOR
+
+        public virtual bool TryGetTileModifier(Vector3Int coords, Tilemap tilemap, out TileModifier modifier)
+        {
+            if (tilemap.GetTile(coords) is TileBase tileBase)
+            {
+                return m_ModifierMap.TryGetValue(tileBase, out modifier);
+            }
+            modifier = new TileModifier();
+            return false;
+        }
+    }
+}

Assets/Scripts/PathFinding/NavMeshComponents/Scripts/NavMeshModifierTilemap.cs.meta

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Assets/Scripts/PathFinding/NavMeshComponents/Scripts/NavMeshModifierVolume.cs

@@ -0,0 +1,56 @@
+using System.Collections.Generic;
+using UnityEngine;
+using NavMeshPlus.Extensions;
+
+namespace NavMeshPlus.Components
+{
+    [ExecuteInEditMode]
+    [AddComponentMenu("Navigation/Navigation ModifierVolume", 31)]
+    [HelpURL("https://github.com/Unity-Technologies/NavMeshComponents#documentation-draft")]
+    public class NavMeshModifierVolume : MonoBehaviour
+    {
+        [SerializeField]
+        Vector3 m_Size = new Vector3(4.0f, 3.0f, 4.0f);
+        public Vector3 size { get { return m_Size; } set { m_Size = value; } }
+
+        [SerializeField]
+        Vector3 m_Center = new Vector3(0, 1.0f, 0);
+        public Vector3 center { get { return m_Center; } set { m_Center = value; } }
+
+        [SerializeField, NavMeshArea]
+        int m_Area;
+        public int area { get { return m_Area; } set { m_Area = value; } }
+
+        // List of agent types the modifier is applied for.
+        // Special values: empty == None, m_AffectedAgents[0] =-1 == All.
+        [SerializeField]
+        List<int> m_AffectedAgents = new List<int>(new int[] { -1 });    // Default value is All
+
+        static readonly List<NavMeshModifierVolume> s_NavMeshModifiers = new List<NavMeshModifierVolume>();
+
+        public static List<NavMeshModifierVolume> activeModifiers
+        {
+            get { return s_NavMeshModifiers; }
+        }
+
+        void OnEnable()
+        {
+            if (!s_NavMeshModifiers.Contains(this))
+                s_NavMeshModifiers.Add(this);
+        }
+
+        void OnDisable()
+        {
+            s_NavMeshModifiers.Remove(this);
+        }
+
+        public bool AffectsAgentType(int agentTypeID)
+        {
+            if (m_AffectedAgents.Count == 0)
+                return false;
+            if (m_AffectedAgents[0] == -1)
+                return true;
+            return m_AffectedAgents.IndexOf(agentTypeID) != -1;
+        }
+    }
+}

Assets/Scripts/PathFinding/NavMeshComponents/Scripts/NavMeshModifierVolume.cs.meta

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Assets/Scripts/PathFinding/NavMeshComponents/Scripts/NavMeshSurface.cs

@@ -0,0 +1,543 @@
+using NavMeshPlus.Extensions;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.AI;
+#if UNITY_EDITOR
+using UnityEditor;
+using UnityEditor.SceneManagement;
+#endif
+
+namespace NavMeshPlus.Components
+{
+    public enum CollectObjects
+    {
+        All = 0,
+        Volume = 1,
+        Children = 2,
+    }
+
+    [ExecuteAlways]
+    [DefaultExecutionOrder(-102)]
+    [AddComponentMenu("Navigation/Navigation Surface", 30)]
+    [HelpURL("https://github.com/Unity-Technologies/NavMeshComponents#documentation-draft")]
+    public class NavMeshSurface : MonoBehaviour
+    {
+        [SerializeField, NavMeshAgent]
+        int m_AgentTypeID;
+        public int agentTypeID { get { return m_AgentTypeID; } set { m_AgentTypeID = value; } }
+
+        [SerializeField]
+        CollectObjects m_CollectObjects = CollectObjects.All;
+        public CollectObjects collectObjects { get { return m_CollectObjects; } set { m_CollectObjects = value; } }
+
+        [SerializeField]
+        Vector3 m_Size = new Vector3(10.0f, 10.0f, 10.0f);
+        public Vector3 size { get { return m_Size; } set { m_Size = value; } }
+
+        [SerializeField]
+        Vector3 m_Center = new Vector3(0, 2.0f, 0);
+        public Vector3 center { get { return m_Center; } set { m_Center = value; } }
+
+        [SerializeField]
+        LayerMask m_LayerMask = ~0;
+        public LayerMask layerMask { get { return m_LayerMask; } set { m_LayerMask = value; } }
+
+        [SerializeField]
+        NavMeshCollectGeometry m_UseGeometry = NavMeshCollectGeometry.RenderMeshes;
+        public NavMeshCollectGeometry useGeometry { get { return m_UseGeometry; } set { m_UseGeometry = value; } }
+
+        [SerializeField, NavMeshArea]
+        int m_DefaultArea;
+        public int defaultArea { get { return m_DefaultArea; } set { m_DefaultArea = value; } }
+
+        [SerializeField]
+        bool m_IgnoreNavMeshAgent = true;
+        public bool ignoreNavMeshAgent { get { return m_IgnoreNavMeshAgent; } set { m_IgnoreNavMeshAgent = value; } }
+
+        [SerializeField]
+        bool m_IgnoreNavMeshObstacle = true;
+        public bool ignoreNavMeshObstacle { get { return m_IgnoreNavMeshObstacle; } set { m_IgnoreNavMeshObstacle = value; } }
+
+        [SerializeField]
+        bool m_OverrideTileSize;
+        public bool overrideTileSize { get { return m_OverrideTileSize; } set { m_OverrideTileSize = value; } }
+        [SerializeField]
+        int m_TileSize = 256;
+        public int tileSize { get { return m_TileSize; } set { m_TileSize = value; } }
+        [SerializeField]
+        bool m_OverrideVoxelSize;
+        public bool overrideVoxelSize { get { return m_OverrideVoxelSize; } set { m_OverrideVoxelSize = value; } }
+        [SerializeField]
+        float m_VoxelSize;
+        public float voxelSize { get { return m_VoxelSize; } set { m_VoxelSize = value; } }
+
+        // Currently not supported advanced options
+        [SerializeField]
+        bool m_BuildHeightMesh;
+        public bool buildHeightMesh { get { return m_BuildHeightMesh; } set { m_BuildHeightMesh = value; } }
+
+        [SerializeField]
+        bool m_HideEditorLogs;
+        public bool hideEditorLogs { get { return m_HideEditorLogs; } set { m_HideEditorLogs = value; } }
+
+        // Reference to whole scene navmesh data asset.
+        [UnityEngine.Serialization.FormerlySerializedAs("m_BakedNavMeshData")]
+        [SerializeField]
+        NavMeshData m_NavMeshData;
+        public NavMeshData navMeshData { get { return m_NavMeshData; } set { m_NavMeshData = value; } }
+
+        // Do not serialize - runtime only state.
+        NavMeshDataInstance m_NavMeshDataInstance;
+        Vector3 m_LastPosition = Vector3.zero;
+        Quaternion m_LastRotation = Quaternion.identity;
+
+        static readonly List<NavMeshSurface> s_NavMeshSurfaces = new List<NavMeshSurface>();
+        public INavMeshExtensionsProvider NevMeshExtensions { get; set; } = new NavMeshExtensionsProvider();
+
+        public static List<NavMeshSurface> activeSurfaces
+        {
+            get { return s_NavMeshSurfaces; }
+        }
+
+        void OnEnable()
+        {
+            Register(this);
+            AddData();
+        }
+
+        void OnDisable()
+        {
+            RemoveData();
+            Unregister(this);
+        }
+
+        public void AddData()
+        {
+#if UNITY_EDITOR
+            var isInPreviewScene = EditorSceneManager.IsPreviewSceneObject(this);
+            var isPrefab = isInPreviewScene || EditorUtility.IsPersistent(this);
+            if (isPrefab)
+            {
+                //Debug.LogFormat("NavMeshData from {0}.{1} will not be added to the NavMesh world because the gameObject is a prefab.",
+                //    gameObject.name, name);
+                return;
+            }
+#endif
+            if (m_NavMeshDataInstance.valid)
+                return;
+
+            if (m_NavMeshData != null)
+            {
+                m_NavMeshDataInstance = NavMesh.AddNavMeshData(m_NavMeshData, transform.position, transform.rotation);
+                m_NavMeshDataInstance.owner = this;
+            }
+
+            m_LastPosition = transform.position;
+            m_LastRotation = transform.rotation;
+        }
+
+        public void RemoveData()
+        {
+            m_NavMeshDataInstance.Remove();
+            m_NavMeshDataInstance = new NavMeshDataInstance();
+        }
+
+        public NavMeshBuildSettings GetBuildSettings()
+        {
+            var buildSettings = NavMesh.GetSettingsByID(m_AgentTypeID);
+            if (buildSettings.agentTypeID == -1)
+            {
+                if (!m_HideEditorLogs) Debug.LogWarning("No build settings for agent type ID " + agentTypeID, this);
+                buildSettings.agentTypeID = m_AgentTypeID;
+            }
+
+            if (overrideTileSize)
+            {
+                buildSettings.overrideTileSize = true;
+                buildSettings.tileSize = tileSize;
+            }
+            if (overrideVoxelSize)
+            {
+                buildSettings.overrideVoxelSize = true;
+                buildSettings.voxelSize = voxelSize;
+            }
+            return buildSettings;
+        }
+
+        public void BuildNavMesh()
+        {
+            using var builderState = new NavMeshBuilderState() { };
+
+            var sources = CollectSources(builderState);
+
+            // Use unscaled bounds - this differs in behaviour from e.g. collider components.
+            // But is similar to reflection probe - and since navmesh data has no scaling support - it is the right choice here.
+            var sourcesBounds = new Bounds(m_Center, Abs(m_Size));
+            if (m_CollectObjects == CollectObjects.All || m_CollectObjects == CollectObjects.Children)
+            {
+                sourcesBounds = CalculateWorldBounds(sources);
+            }
+            builderState.worldBounds = sourcesBounds;
+            for (int i = 0; i < NevMeshExtensions.Count; ++i)
+            {
+                NevMeshExtensions[i].PostCollectSources(this, sources, builderState);
+            }
+            var data = NavMeshBuilder.BuildNavMeshData(GetBuildSettings(),
+                    sources, sourcesBounds, transform.position, transform.rotation);
+
+            if (data != null)
+            {
+                data.name = gameObject.name;
+                RemoveData();
+                m_NavMeshData = data;
+                if (isActiveAndEnabled)
+                    AddData();
+            }
+        }
+
+        // Source: https://github.com/Unity-Technologies/NavMeshComponents/issues/97#issuecomment-528692289
+        public AsyncOperation BuildNavMeshAsync()
+        {
+            RemoveData();
+            m_NavMeshData = new NavMeshData(m_AgentTypeID)
+            {
+                name = gameObject.name,
+                position = transform.position,
+                rotation = transform.rotation
+            };
+
+            if (isActiveAndEnabled)
+            {
+                AddData();
+            }
+
+            return UpdateNavMesh(m_NavMeshData);
+        }
+
+        public AsyncOperation UpdateNavMesh(NavMeshData data)
+        {
+            using var builderState = new NavMeshBuilderState() { };
+
+            var sources = CollectSources(builderState);
+
+            // Use unscaled bounds - this differs in behaviour from e.g. collider components.
+            // But is similar to reflection probe - and since navmesh data has no scaling support - it is the right choice here.
+            var sourcesBounds = new Bounds(m_Center, Abs(m_Size));
+            if (m_CollectObjects == CollectObjects.All || m_CollectObjects == CollectObjects.Children)
+            {
+                sourcesBounds = CalculateWorldBounds(sources);
+            }
+            builderState.worldBounds = sourcesBounds;
+            for (int i = 0; i < NevMeshExtensions.Count; ++i)
+            {
+                NevMeshExtensions[i].PostCollectSources(this, sources, builderState);
+            }
+            return NavMeshBuilder.UpdateNavMeshDataAsync(data, GetBuildSettings(), sources, sourcesBounds);
+        }
+
+        static void Register(NavMeshSurface surface)
+        {
+#if UNITY_EDITOR
+            var isInPreviewScene = EditorSceneManager.IsPreviewSceneObject(surface);
+            var isPrefab = isInPreviewScene || EditorUtility.IsPersistent(surface);
+            if (isPrefab)
+            {
+                //Debug.LogFormat("NavMeshData from {0}.{1} will not be added to the NavMesh world because the gameObject is a prefab.",
+                //    surface.gameObject.name, surface.name);
+                return;
+            }
+#endif
+            if (s_NavMeshSurfaces.Count == 0)
+                NavMesh.onPreUpdate += UpdateActive;
+
+            if (!s_NavMeshSurfaces.Contains(surface))
+                s_NavMeshSurfaces.Add(surface);
+        }
+
+        static void Unregister(NavMeshSurface surface)
+        {
+            s_NavMeshSurfaces.Remove(surface);
+
+            if (s_NavMeshSurfaces.Count == 0)
+                NavMesh.onPreUpdate -= UpdateActive;
+        }
+
+        static void UpdateActive()
+        {
+            for (var i = 0; i < s_NavMeshSurfaces.Count; ++i)
+                s_NavMeshSurfaces[i].UpdateDataIfTransformChanged();
+        }
+
+        void AppendModifierVolumes(ref List<NavMeshBuildSource> sources)
+        {
+#if UNITY_EDITOR
+            var myStage = StageUtility.GetStageHandle(gameObject);
+            if (!myStage.IsValid())
+                return;
+#endif
+            // Modifiers
+            List<NavMeshModifierVolume> modifiers;
+            if (m_CollectObjects == CollectObjects.Children)
+            {
+                modifiers = new List<NavMeshModifierVolume>(GetComponentsInChildren<NavMeshModifierVolume>());
+                modifiers.RemoveAll(x => !x.isActiveAndEnabled);
+            }
+            else
+            {
+                modifiers = NavMeshModifierVolume.activeModifiers;
+            }
+
+            foreach (var m in modifiers)
+            {
+                if ((m_LayerMask & (1 << m.gameObject.layer)) == 0)
+                    continue;
+                if (!m.AffectsAgentType(m_AgentTypeID))
+                    continue;
+#if UNITY_EDITOR
+                if (!myStage.Contains(m.gameObject))
+                    continue;
+#endif
+                var mcenter = m.transform.TransformPoint(m.center);
+                var scale = m.transform.lossyScale;
+                var msize = new Vector3(m.size.x * Mathf.Abs(scale.x), m.size.y * Mathf.Abs(scale.y), m.size.z * Mathf.Abs(scale.z));
+
+                var src = new NavMeshBuildSource();
+                src.shape = NavMeshBuildSourceShape.ModifierBox;
+                src.transform = Matrix4x4.TRS(mcenter, m.transform.rotation, Vector3.one);
+                src.size = msize;
+                src.area = m.area;
+                sources.Add(src);
+            }
+        }
+
+        List<NavMeshBuildSource> CollectSources(NavMeshBuilderState builderState)
+        {
+            var sources = new List<NavMeshBuildSource>();
+            var markups = new List<NavMeshBuildMarkup>();
+
+            List<NavMeshModifier> modifiers;
+            if (m_CollectObjects == CollectObjects.Children)
+            {
+                modifiers = new List<NavMeshModifier>(GetComponentsInChildren<NavMeshModifier>());
+                modifiers.RemoveAll(x => !x.isActiveAndEnabled);
+            }
+            else
+            {
+                modifiers = NavMeshModifier.activeModifiers;
+            }
+
+            foreach (var m in modifiers)
+            {
+                if ((m_LayerMask & (1 << m.gameObject.layer)) == 0)
+                    continue;
+                if (!m.AffectsAgentType(m_AgentTypeID))
+                    continue;
+                var markup = new NavMeshBuildMarkup();
+                markup.root = m.transform;
+                markup.overrideArea = m.overrideArea;
+                markup.area = m.area;
+                markup.ignoreFromBuild = m.ignoreFromBuild;
+                markups.Add(markup);
+            }
+
+#if UNITY_EDITOR
+            if (!EditorApplication.isPlaying)
+            {
+                if (m_CollectObjects == CollectObjects.All)
+                {
+                    UnityEditor.AI.NavMeshBuilder.CollectSourcesInStage(
+                        null, m_LayerMask, m_UseGeometry, m_DefaultArea, markups, gameObject.scene, sources);
+                }
+                else if (m_CollectObjects == CollectObjects.Children)
+                {
+                    UnityEditor.AI.NavMeshBuilder.CollectSourcesInStage(
+                        transform, m_LayerMask, m_UseGeometry, m_DefaultArea, markups, gameObject.scene, sources);
+                }
+                else if (m_CollectObjects == CollectObjects.Volume)
+                {
+                    Matrix4x4 localToWorld = Matrix4x4.TRS(transform.position, transform.rotation, Vector3.one);
+                    var worldBounds = GetWorldBounds(localToWorld, new Bounds(m_Center, m_Size));
+
+                    UnityEditor.AI.NavMeshBuilder.CollectSourcesInStage(
+                        worldBounds, m_LayerMask, m_UseGeometry, m_DefaultArea, markups, gameObject.scene, sources);
+                }
+                for (int i = 0; i < NevMeshExtensions.Count; ++i)
+                {
+                    NevMeshExtensions[i].CollectSources(this, sources, builderState);
+                }
+            }
+            else
+#endif
+            {
+                if (m_CollectObjects == CollectObjects.All)
+                {
+                    NavMeshBuilder.CollectSources(null, m_LayerMask, m_UseGeometry, m_DefaultArea, markups, sources);
+                }
+                else if (m_CollectObjects == CollectObjects.Children)
+                {
+                    NavMeshBuilder.CollectSources(transform, m_LayerMask, m_UseGeometry, m_DefaultArea, markups, sources);
+                }
+                else if (m_CollectObjects == CollectObjects.Volume)
+                {
+                    Matrix4x4 localToWorld = Matrix4x4.TRS(transform.position, transform.rotation, Vector3.one);
+                    var worldBounds = GetWorldBounds(localToWorld, new Bounds(m_Center, m_Size));
+                    NavMeshBuilder.CollectSources(worldBounds, m_LayerMask, m_UseGeometry, m_DefaultArea, markups, sources);
+                }
+                for (int i = 0; i < NevMeshExtensions.Count; ++i)
+                {
+                    NevMeshExtensions[i].CollectSources(this, sources, builderState);
+                }
+            }
+
+            if (m_IgnoreNavMeshAgent)
+                sources.RemoveAll((x) => (x.component != null && x.component.gameObject.GetComponent<NavMeshAgent>() != null));
+
+            if (m_IgnoreNavMeshObstacle)
+                sources.RemoveAll((x) => (x.component != null && x.component.gameObject.GetComponent<NavMeshObstacle>() != null));
+
+            AppendModifierVolumes(ref sources);
+
+            return sources;
+        }
+
+        static Vector3 Abs(Vector3 v)
+        {
+            return new Vector3(Mathf.Abs(v.x), Mathf.Abs(v.y), Mathf.Abs(v.z));
+        }
+
+        public static Bounds GetWorldBounds(Matrix4x4 mat, Bounds bounds)
+        {
+            var absAxisX = Abs(mat.MultiplyVector(Vector3.right));
+            var absAxisY = Abs(mat.MultiplyVector(Vector3.up));
+            var absAxisZ = Abs(mat.MultiplyVector(Vector3.forward));
+            var worldPosition = mat.MultiplyPoint(bounds.center);
+            var worldSize = absAxisX * bounds.size.x + absAxisY * bounds.size.y + absAxisZ * bounds.size.z;
+            return new Bounds(worldPosition, worldSize);
+        }
+
+        public Bounds CalculateWorldBounds(List<NavMeshBuildSource> sources)
+        {
+            // Use the unscaled matrix for the NavMeshSurface
+            Matrix4x4 worldToLocal = Matrix4x4.TRS(transform.position, transform.rotation, Vector3.one);
+            worldToLocal = worldToLocal.inverse;
+
+            var result = new Bounds();
+            var builderState = new NavMeshBuilderState() { worldBounds = result, worldToLocal = worldToLocal };
+            for (int i = 0; i < NevMeshExtensions.Count; ++i)
+            {
+                NevMeshExtensions[i].CalculateWorldBounds(this, sources, builderState);
+                result.Encapsulate(builderState.worldBounds);
+            }
+            foreach (var src in sources)
+            {
+                switch (src.shape)
+                {
+                    case NavMeshBuildSourceShape.Mesh:
+                    {
+                        var m = src.sourceObject as Mesh;
+                        result.Encapsulate(GetWorldBounds(worldToLocal * src.transform, m.bounds));
+                        break;
+                    }
+                    case NavMeshBuildSourceShape.Terrain:
+                    {
+#if IS_TERRAIN_USED
+                        // Terrain pivot is lower/left corner - shift bounds accordingly
+                        var t = src.sourceObject as TerrainData;
+                        result.Encapsulate(GetWorldBounds(worldToLocal * src.transform, new Bounds(0.5f * t.size, t.size)));
+#endif
+                        break;
+                    }
+                    case NavMeshBuildSourceShape.Box:
+                    case NavMeshBuildSourceShape.Sphere:
+                    case NavMeshBuildSourceShape.Capsule:
+                    case NavMeshBuildSourceShape.ModifierBox:
+                        result.Encapsulate(GetWorldBounds(worldToLocal * src.transform, new Bounds(Vector3.zero, src.size)));
+                        break;
+                }
+            }
+            // Inflate the bounds a bit to avoid clipping co-planar sources
+            result.Expand(0.1f);
+            return result;
+        }
+
+        bool HasTransformChanged()
+        {
+            if (m_LastPosition != transform.position) return true;
+            if (m_LastRotation != transform.rotation) return true;
+            return false;
+        }
+
+        void UpdateDataIfTransformChanged()
+        {
+            if (HasTransformChanged())
+            {
+                RemoveData();
+                AddData();
+            }
+        }
+
+#if UNITY_EDITOR
+        bool UnshareNavMeshAsset()
+        {
+            // Nothing to unshare
+            if (m_NavMeshData == null)
+                return false;
+
+            // Prefab parent owns the asset reference
+            var isInPreviewScene = EditorSceneManager.IsPreviewSceneObject(this);
+            var isPersistentObject = EditorUtility.IsPersistent(this);
+            if (isInPreviewScene || isPersistentObject)
+                return false;
+
+            // An instance can share asset reference only with its prefab parent
+            var prefab = UnityEditor.PrefabUtility.GetCorrespondingObjectFromSource(this) as NavMeshSurface;
+            if (prefab != null && prefab.navMeshData == navMeshData)
+                return false;
+
+            // Don't allow referencing an asset that's assigned to another surface
+            for (var i = 0; i < s_NavMeshSurfaces.Count; ++i)
+            {
+                var surface = s_NavMeshSurfaces[i];
+                if (surface != this && surface.m_NavMeshData == m_NavMeshData)
+                    return true;
+            }
+
+            // Asset is not referenced by known surfaces
+            return false;
+        }
+
+        void OnValidate()
+        {
+            if (UnshareNavMeshAsset())
+            {
+                if (!m_HideEditorLogs) Debug.LogWarning("Duplicating NavMeshSurface does not duplicate the referenced navmesh data", this);
+                m_NavMeshData = null;
+            }
+
+            var settings = NavMesh.GetSettingsByID(m_AgentTypeID);
+            if (settings.agentTypeID != -1)
+            {
+                // When unchecking the override control, revert to automatic value.
+                const float kMinVoxelSize = 0.01f;
+                if (!m_OverrideVoxelSize)
+                    m_VoxelSize = settings.agentRadius / 3.0f;
+                if (m_VoxelSize < kMinVoxelSize)
+                    m_VoxelSize = kMinVoxelSize;
+
+                // When unchecking the override control, revert to default value.
+                const int kMinTileSize = 16;
+                const int kMaxTileSize = 1024;
+                const int kDefaultTileSize = 256;
+
+                if (!m_OverrideTileSize)
+                    m_TileSize = kDefaultTileSize;
+                // Make sure tilesize is in sane range.
+                if (m_TileSize < kMinTileSize)
+                    m_TileSize = kMinTileSize;
+                if (m_TileSize > kMaxTileSize)
+                    m_TileSize = kMaxTileSize;
+            }
+        }
+#endif
+    }
+}

Assets/Scripts/PathFinding/NavMeshComponents/Scripts/NavMeshSurface.cs.meta

@@ -0,0 +1,11 @@
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+  serializedVersion: 2
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Assets/Scripts/PathFinding/NavMeshComponents/Scripts/RootSources2d.cs

@@ -0,0 +1,32 @@
+using NavMeshPlus.Components;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using UnityEngine;
+using UnityEngine.AI;
+
+namespace NavMeshPlus.Extensions
+{
+    [ExecuteAlways]
+    [AddComponentMenu("Navigation/Navigation RootSources2d", 30)]
+    public class RootSources2d: NavMeshExtension
+    {
+        [SerializeField]
+        private List<GameObject> _rootSources;
+
+        public List<GameObject> RootSources { get => _rootSources; set => _rootSources = value; }
+
+        protected override void Awake()
+        {
+            Order = -1000;
+            base.Awake();
+        }
+
+        public override void CollectSources(NavMeshSurface surface, List<NavMeshBuildSource> sources, NavMeshBuilderState navNeshState)
+        {
+            navNeshState.roots = _rootSources;
+        }
+    }
+}

Assets/Scripts/PathFinding/NavMeshComponents/Scripts/RootSources2d.cs.meta

@@ -0,0 +1,11 @@
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Assets/Scripts/PathFinding/NavMeshComponents/Scripts/RotateAgentInstantly.cs

@@ -0,0 +1,40 @@
+using UnityEngine;
+using UnityEngine.AI;
+
+//***********************************************************************************
+// Contributed by author @Lazy_Sloth from unity forum (https://forum.unity.com/)
+//***********************************************************************************
+namespace NavMeshPlus.Extensions
+{
+    public class RotateAgentInstantly: IAgentOverride
+    {
+
+        public RotateAgentInstantly(NavMeshAgent agent, AgentOverride2d owner)
+        {
+            this.agent = agent;
+            this.owner = owner;
+        }
+        private NavMeshAgent agent;
+        private AgentOverride2d owner;
+        private Vector3 nextWaypoint;
+
+        public void UpdateAgent()
+        {
+            if (agent.hasPath && agent.path.corners.Length > 1)
+            {
+                if (nextWaypoint != agent.path.corners[1])
+                {
+                    RotateToPoint(agent.path.corners[1], agent.transform);
+                    nextWaypoint = agent.path.corners[1];
+                }
+            }
+        }
+
+        private static void RotateToPoint(Vector3 targetPoint, Transform transform)
+        {
+            Vector3 targetVector = targetPoint - transform.position;
+            float angleDifference = Vector2.SignedAngle(transform.up, targetVector);
+            transform.rotation = Quaternion.Euler(0, 0, transform.localEulerAngles.z + angleDifference);
+        }
+    }
+}

Assets/Scripts/PathFinding/NavMeshComponents/Scripts/RotateAgentInstantly.cs.meta

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Assets/Scripts/PathFinding/NavMeshComponents/Scripts/RotateAgentSmoothly.cs

@@ -0,0 +1,57 @@
+using System.Collections;
+using UnityEngine;
+using UnityEngine.AI;
+
+//***********************************************************************************
+// Contributed by author @Lazy_Sloth from unity forum (https://forum.unity.com/)
+//***********************************************************************************
+namespace NavMeshPlus.Extensions
+{
+    public class RotateAgentSmoothly: IAgentOverride
+    {
+        public RotateAgentSmoothly(NavMeshAgent agent, AgentOverride2d owner, float rotateSpeed)
+        {
+            this.agent = agent;
+            this.owner = owner;
+            this.rotateSpeed = rotateSpeed;
+        }
+
+        private NavMeshAgent agent;
+        private AgentOverride2d owner;
+        private Vector2 nextWaypoint;
+        private float angleDifference;
+        private float targetAngle;
+        public float rotateSpeed;
+
+        public void UpdateAgent()
+        {
+            if (agent.hasPath && agent.path.corners.Length > 1)
+            {
+                if (nextWaypoint != (Vector2)agent.path.corners[1])
+                {
+                    owner.StartCoroutine(_RotateCoroutine());
+                    nextWaypoint = agent.path.corners[1];
+                }
+            }
+        }
+        protected IEnumerator _RotateCoroutine()
+        {
+            yield return RotateToWaypoints(agent.transform);
+        }
+        protected IEnumerator RotateToWaypoints(Transform transform)
+        {
+            Vector2 targetVector = agent.path.corners[1] - transform.position;
+            angleDifference = Vector2.SignedAngle(transform.up, targetVector);
+            targetAngle = transform.localEulerAngles.z + angleDifference;
+
+            if (targetAngle >= 360) { targetAngle -= 360; }
+            else if (targetAngle < 0) { targetAngle += 360; }
+
+            while (transform.localEulerAngles.z < targetAngle - 0.1f || transform.localEulerAngles.z > targetAngle + 0.1f)
+            {
+                transform.rotation = Quaternion.RotateTowards(transform.rotation, Quaternion.Euler(0, 0, targetAngle), rotateSpeed * Time.deltaTime);
+                yield return null;
+            }
+        }
+    }
+}

Assets/Scripts/PathFinding/NavMeshComponents/Scripts/RotateAgentSmoothly.cs.meta

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+
+# NavMeshPlus
+
+NavMeshComponents.Extensions provides you with ability to create navigation meshes that are generated automatically from your Scene
+geometry, which allows characters to move intelligently around the game world.
+
+![NavMesh](https://github.com/h8man/NavMeshPlus/wiki/images/Tittle-01.png)
+
+# Unity 2D Pathfinding 
+This repo is fork of Unity NavMeshComponents enhanced with Extensions system for 2d Pathfinding and more. [[link]](https://github.com/Unity-Technologies/NavMeshComponents)
+
+#### Wiki [[here]](https://github.com/h8man/NavMeshPlus/wiki)
+#### How To [[here]](https://github.com/h8man/NavMeshPlus/wiki/HOW-TO).
+#### Demo [[github]](https://github.com/h8man/RedHotSweetPepper ).
+#### Discuss [[unityforum]](https://forum.unity.com/threads/2d-navmesh-pathfinding.503596/ ).
+
+# 2D NavMesh
+
+In repo you will find implementation of NavMeshSurface and 2d Extensions for tilemap, sprites and collider2d top down games.
+
+To use it in your project:
+
+1. Copy repo into your Asset folder (or install as a package).
+2. Create Empty Object in scene root.
+3. Add "Navigation Surface" component to Empty Object and add NavMeshCollecSources2d component after.
+4. Click Rotate Surface to XY (to face surface toward standard 2d camera x-90;y0;z0)
+5. Add "Navigation Modifier" component to scene objects obstacles, override the area.
+6. In "Navigation Surface" hit Bake.
+
+How does it works:
+
+1. It uses [NavMeshSurface](https://docs.unity3d.com/Manual/class-NavMeshSurface.html) as base implementation.
+2. Implements world bound calculation.
+3. Implements source collector of tiles, sprites and 2d colliders
+4. Creates walkable mesh box from world bounds.
+5. Convert tiles, sprites and 2d colliders to sources as `NavMeshBuilder` would do.
+# Setup
+
+You can use this in two different ways: downloading this repository or adding it to your project's Package Manager manifest. [Git](https://git-scm.com/) must be installed and added to your path.
+Alternatively, you can pick scripts and place in your project's `Assets` folder.
+
+#### Method 1. Download
+Download or clone this repository into your project in the folder `Packages/com.h8man.2d.navmeshplus`.
+
+#### Method 2. Package Manager Manifest
+The following line needs to be added to your `Packages/manifest.json` file in your Unity Project under the `dependencies` section:
+```
+"com.h8man.2d.navmeshplus": "https://github.com/h8man/NavMeshPlus.git#master"
+```
+#### Method 3. Add Package form git URL
+Go to `Package Manager` click `+` and then select `Add Package form git URL` paste url:
+```
+https://github.com/h8man/NavMeshPlus.git
+```

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Assets/Scripts/PathFinding/Unity/LICENSE

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+The MIT License (MIT)
+
+Copyright (c) 2016, Unity Technologies
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

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+> Please use the branch matching the version of your Unity editor: [master](../../tree/master) for the latest released version, [2018.3](../../tree/2018.3), [2018.2](../../tree/2018.2), [2018.1](../../tree/2018.1), [2017.2](../../tree/2017.2) for up to 2017.4-LTS, [2017.1](../../tree/2017.1), [5.6](../../tree/5.6).
+
+# Components for Runtime NavMesh Building
+
+Here we introduce four components for the navigation system:
+
+* __NavMeshSurface__ – for building and enabling a NavMesh surface for one agent type.
+* __NavMeshModifier__ – affects the NavMesh generation of NavMesh area types, based on the transform hierarchy.
+* __NavMeshModifierVolume__ – affects the NavMesh generation of NavMesh area types, based on volume.
+* __NavMeshLink__ – connects same or different NavMesh surfaces for one agent type.
+
+These components comprise the high level controls for building and using NavMeshes at runtime as well as edit time.
+
+Detailed information can be found in the [Documentation](Documentation) section or in the [NavMesh building components](https://docs.unity3d.com/Manual/NavMesh-BuildingComponents.html) section of the Unity Manual.
+
+# How To Get Started
+
+Download and install Unity 5.6 or newer.
+
+Clone or download this repository and open the project in Unity.
+Alternatively, you can copy the contents of `Assets/NavMeshComponents` to an existing project. Make sure to select a branch of the repository that matches the Unity version.
+
+Additional examples are available in the `Assets/Examples` folder.
+The examples are provided "as is". They are neither generic nor robust, but serve as inspiration.
+
+_Note: During the beta cycle features and API are subject to change.\
+**Make sure to backup an existing project before opening it with a beta build.**_
+
+# FAQ
+
+Q: Can I bake a NavMesh at runtime?  
+A: Yes.
+
+Q: Can I use NavMesh'es for more than one agent size?  
+A: Yes.
+
+Q: Can I put a NavMesh in a prefab?  
+A: Yes - with some limitations.
+
+Q: How do I connect two NavMesh surfaces?  
+A: Use the NavMeshLink to connect the two sides.
+
+Q: How do I query the NavMesh for one specific size of agent?  
+A: Use the NavMeshQuery filter when querying the NavMesh.
+
+Q: What's the deal with the 'DefaultExecutionOrder' attribute?  
+A: It gives a way of controlling the order of execution of scripts - specifically it allows us to build a NavMesh before the
+(native) NavMeshAgent component is enabled.
+
+Q: What's the use of the new delegate 'NavMesh.onPreUpdate'?  
+A: It allows you to hook in to controlling the NavMesh data and links set up before the navigation update loop is called on the native side.
+
+Q: Can I do moving NavMesh platforms?  
+A: No - new API is required for consistently moving platforms carrying agents.
+
+Q: Is OffMeshLink now obsolete?  
+A: No - you can still use OffMeshLink - however you'll find that NavMeshLink is more flexible and have less overhead.
+
+Q: What happened to HeightMesh and Auto Generated OffMeshLinks?  
+A: They're not supported in the new NavMesh building feature. HeightMesh will be added at some point. Auto OffMeshLink generation will possibly be replaced with a solution that allows better control of placement.

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