Update ScenePartitionSO.cs

- Try to get the scene object names
- Try to get the object type
- Try to get create object info

Editor/EditorGUIUtils.cs

@@ -17,14 +17,14 @@ namespace VertexColor.ScenePartition.Editor
 
         public static void HorizontalLine() => HorizontalLine(horizontalLineColor);
 
-        public class FoldoutHeaderScope : System.IDisposable
+        public struct FoldoutHeaderScope : System.IDisposable
         {
             public FoldoutHeaderScope(string label, ref bool foldout)
             {
                 foldout = EditorGUILayout.BeginFoldoutHeaderGroup(foldout, label);
             }
 
-            public void Dispose()
+            public readonly void Dispose()
             {
                 EditorGUILayout.EndFoldoutHeaderGroup();
             }

Editor/Icons.meta

@@ -0,0 +1,8 @@
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+folderAsset: yes
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@@ -0,0 +1,123 @@
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Editor/Icons/Reload.png.meta

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Editor/Icons/Save.png.meta

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Editor/Icons/Unload.png.meta

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+  flipbookColumns: 1
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Editor/ScenePartitionEditorWindow.cs

@@ -11,6 +11,9 @@ namespace VertexColor.ScenePartition.Editor
         private Vector2 scrollPos = Vector2.zero;
         private bool foldoutGroupEnabled = false;
 
+        private ulong id = 0;
+        private int gridId = 0;
+
         [MenuItem("Window/ScenePartition")]
         public static void ShowExample()
         {
@@ -19,6 +22,99 @@ namespace VertexColor.ScenePartition.Editor
         }
 
         private void OnGUI()
+        {
+            using (new EditorGUILayout.VerticalScope())
+            {
+                DrawScenePartition();
+
+                GUILayout.FlexibleSpace();
+
+                DrawSceneDataCache();
+            }
+        }
+
+        private void DrawScenePartition()
+        {
+            if (!ScenePartitionUtils.TryGetScenePartitionSOForActiveScene(out var scenePartitionSO)) return;
+
+            EditorGUILayout.LabelField($"ScenePartition | {scenePartitionSO.SceneName}", EditorStyles.boldLabel);
+
+            if (scenePartitionSO.SceneAsset == null)
+            {
+                if (GUILayout.Button("Create Scene"))
+                {
+                    scenePartitionSO.CreateScene();
+                }
+            }
+            else
+            {
+                if (GUILayout.Button("Load All"))
+                {
+                    scenePartitionSO.LoadAll();
+                }
+
+                using (new EditorGUILayout.HorizontalScope())
+                {
+                    if (GUILayout.Button(new GUIContent("Unload", "Empty the scene and save it (so it has no changes in source control)."), EditorStyles.miniButtonLeft))
+                    {
+                        scenePartitionSO.Unload();
+                    }
+
+                    if (GUILayout.Button(new GUIContent("Reload", "Discard changes and reload loaded partitions."), EditorStyles.miniButtonRight))
+                    {
+                        scenePartitionSO.Reload();
+                    }
+                }
+
+                if (GUILayout.Button("Save"))
+                {
+                    scenePartitionSO.Save();
+                }
+
+                EditorGUIUtils.HorizontalLine();
+
+                using (new EditorGUILayout.HorizontalScope())
+                {
+                    id = (ulong)EditorGUILayout.LongField("id", (long)id);
+
+                    if (GUILayout.Button("Load Id"))
+                    {
+                        scenePartitionSO.LoadPartitions(new ulong[1] { id });
+                    }
+                }
+
+                EditorGUIUtils.HorizontalLine();
+
+                ScenePartitionSceneViewEditor.cellSize = EditorGUILayout.IntSlider("cellSize", ScenePartitionSceneViewEditor.cellSize, 10, 1000);
+
+                if (GUILayout.Button("GenerateSceneGrid"))
+                {
+                    scenePartitionSO.GenerateSceneGridData();
+                }
+
+                if (scenePartitionSO.Data.SceneGrid != null)
+                {
+                    using (new EditorGUILayout.HorizontalScope())
+                    {
+                        gridId = EditorGUILayout.IntField("gridId", gridId);
+
+                        if (GUILayout.Button("LoadSceneGrid"))
+                        {
+                            scenePartitionSO.LoadCell(gridId);
+                        }
+                    }
+                }
+
+                EditorGUIUtils.HorizontalLine();
+
+                if (GUILayout.Button("Open Scene Data Folder"))
+                {
+                    EditorUtility.RevealInFinder(ScenePartitionUtils.GetDataPath(scenePartitionSO));
+                }
+            }
+        }
+
+        private void DrawSceneDataCache()
         {
             EditorGUILayout.LabelField("Cache", EditorStyles.boldLabel);
 
@@ -37,11 +133,6 @@ namespace VertexColor.ScenePartition.Editor
 
             EditorGUIUtils.HorizontalLine();
 
-            DrawSceneDataCache();
-        }
-
-        private void DrawSceneDataCache()
-        {
             using (EditorGUIUtils.FoldoutHeaderScope foldoutGroup = new EditorGUIUtils.FoldoutHeaderScope("SceneDataCache", ref foldoutGroupEnabled))
             {
                 if (!foldoutGroupEnabled) return;

Editor/ScenePartitionMenuEditor.cs

@@ -5,25 +5,50 @@ namespace VertexColor.ScenePartition.Editor
 {
     public static class ScenePartitionMenuEditor
     {
-        [MenuItem("GameObject/CopyFileId", false, 10000)]
+        [MenuItem("GameObject/ScenePartition/CopyObjectId", false, 10000)]
-        public static void CreateTextArea5()
+        public static void CopyObjectId(MenuCommand menuCommand)
         {
-            GameObject go = Selection.activeGameObject;
+            // Get context from menu command instead of selection because the menu command is executed for each selected object when executed from the hierarchy.
-
+            if (menuCommand.context is not GameObject go) return;
             if (go == null) return;
+            if (go.scene == null) return;
 
-            GlobalObjectId id = GlobalObjectId.GetGlobalObjectIdSlow(go);
+            ulong id = ScenePartitionUtils.GetTargetObjectId(go);
 
-            if (id.targetPrefabId == 0) // 0 = no prefab.
+            EditorGUIUtility.systemCopyBuffer = id.ToString();
+            Debug.Log($"Copied object id '{id}' from '{go}' to clipboard");
+        }
+
+        [MenuItem("GameObject/ScenePartition/AddToAlwaysLoad", false, 10000)]
+        public static void AddToAlwaysLoad(MenuCommand menuCommand)
         {
-                EditorGUIUtility.systemCopyBuffer = id.targetObjectId.ToString();
+            // Get context from menu command instead of selection because the menu command is executed for each selected object when executed from the hierarchy.
-                Debug.Log($"object id: {id.targetObjectId}");
+            if (menuCommand.context is not GameObject go) return;
+            if (go == null) return;
+            if (go.scene == null) return;
+            if (!ScenePartitionUtils.TryGetScenePartitionSOForActiveScene(out var scenePartitionSO)) return;
+
+            ulong id = ScenePartitionUtils.GetTargetObjectId(go);
+
+            if (scenePartitionSO.alwaysLoadIds.Contains(id)) return;
+
+            scenePartitionSO.alwaysLoadIds.Add(id);
+            Debug.Log($"Added '{go}' ({id}) to '{scenePartitionSO.name}' ({scenePartitionSO.SceneName})");
         }
-            else
+
+        [MenuItem("GameObject/ScenePartition/RemoveFromAlwaysLoad", false, 10000)]
+        public static void RemoveFromAlwaysLoad(MenuCommand menuCommand)
         {
-                EditorGUIUtility.systemCopyBuffer = id.targetPrefabId.ToString();
+            // Get context from menu command instead of selection because the menu command is executed for each selected object when executed from the hierarchy.
-                Debug.Log($"object id: {id.targetPrefabId}");
+            if (menuCommand.context is not GameObject go) return;
-            }
+            if (go == null) return;
+            if (go.scene == null) return;
+            if (!ScenePartitionUtils.TryGetScenePartitionSOForActiveScene(out var scenePartitionSO)) return;
+
+            ulong id = ScenePartitionUtils.GetTargetObjectId(go);
+
+            scenePartitionSO.alwaysLoadIds.Remove(id);
+            Debug.Log($"Removed '{go}' ({id}) from '{scenePartitionSO.name}' ({scenePartitionSO.SceneName})");
         }
     }
 }

Editor/ScenePartitionSO.cs

@@ -81,13 +81,13 @@ namespace VertexColor.ScenePartition.Editor
         }
 
         private void LoadScenePartitions(SortedSet<ulong> partitionIds)
+        {
+            using (new ProfilerUtility.ProfilerScope($"{nameof(LoadScenePartitions)}"))
             {
                 if (!Data.HasCreatedPartitions) return;
 
                 string scenePath = ScenePartitionUtils.GetScenePath(this);
 
-            List<string> sceneData = new List<string>();
-
                 Data.LoadedScenePartitions.Clear();
 
                 // Add always load ids.
@@ -97,49 +97,77 @@ namespace VertexColor.ScenePartition.Editor
                     partitionIds.Add(id);
                 }
 
+                // Clear file.
+                File.WriteAllText(scenePath, string.Empty);
+
                 // Create scene data.
+                try
+                {
+                    using (FileStream outputStream = new FileStream(scenePath, FileMode.Append, FileAccess.Write))
+                    {
                         foreach (ulong id in partitionIds)
                         {
                             ScenePartition p = Data.ScenePartitions[id];
-                sceneData.AddRange(File.ReadAllLines(p.filePath));
+
-                Data.LoadedScenePartitions.Add(p.id, p);
+                            using (FileStream inputStream = new FileStream(p.filePath, FileMode.Open, FileAccess.Read))
+                            {
+                                byte[] buffer = new byte[4096];
+                                int bytesRead;
+                                while ((bytesRead = inputStream.Read(buffer, 0, buffer.Length)) > 0)
+                                {
+                                    outputStream.Write(buffer, 0, bytesRead);
+                                }
                             }
 
-            // Create scene.
+                            Data.LoadedScenePartitions.Add(p.id, p);
-            File.WriteAllLines(scenePath, sceneData);
+                        }
+                    }
+                }
+                catch (System.Exception ex)
+                {
+                    Debug.LogException(ex);
+                }
 
                 AssetDatabase.Refresh();
             }
+        }
 
         /// <summary>
         /// Convert scene to partitions and save them to disk.
         /// </summary>
         public void Save()
+        {
+            using (new ProfilerUtility.ProfilerScope($"{nameof(Save)}"))
             {
                 DeleteLoadedPartitions(); // Delete the loaded partitions from disk so we can write the new ones.
 
-            string pattern = @"&(\d+)";
+                const string objectIdPattern = @"&(\d+)";
                 string dataPath = ScenePartitionUtils.GetDataPath(this);
                 string scenePath = ScenePartitionUtils.GetScenePath(this);
 
                 // Read the data from the scene file.
                 string[] sceneData = File.ReadAllLines(scenePath);
 
+                Dictionary<ulong, string> sceneObjectNameById = GetSceneObjectNames(in sceneData);
+
                 // Split it into blocks.
                 int lastIndex = sceneData.Length;
                 for (int i = sceneData.Length - 1; i >= 0; i--)
                 {
                     if (sceneData[i].StartsWith("---")) // --- is the start of a new yaml document.
                     {
-                    Match match = Regex.Match(sceneData[i], pattern);
+                        Match match = Regex.Match(sceneData[i], objectIdPattern);
 
                         if (match.Success)
                         {
                             // Extract the file number
                             string id = match.Groups[1].Value;
+                            ulong objectId = ulong.Parse(id);
+
+                            GetObjectInfo(in sceneData, in sceneObjectNameById, i, lastIndex, objectId, out string objectInfo);
 
                             // Write data to disk.
-                        File.WriteAllLines($"{dataPath}/{SceneName}-{id}.yaml", sceneData[i..lastIndex]);
+                            File.WriteAllLines($"{dataPath}/{SceneName}-{id}{objectInfo}.yaml", sceneData[i..lastIndex]);
                         }
 
                         lastIndex = i;
@@ -149,11 +177,14 @@ namespace VertexColor.ScenePartition.Editor
                 // Write header to disk.
                 File.WriteAllLines($"{dataPath}/{SceneName}.yaml", sceneData[0..lastIndex]);
             }
+        }
 
         /// <summary>
         /// Empty the scene and save it (so it has no changes in source control).
         /// </summary>
         public void Unload()
+        {
+            using (new ProfilerUtility.ProfilerScope($"{nameof(Unload)}"))
             {
                 string dataPath = ScenePartitionUtils.GetDataPath(this);
                 string scenePath = ScenePartitionUtils.GetScenePath(this);
@@ -173,8 +204,11 @@ namespace VertexColor.ScenePartition.Editor
 
                 AssetDatabase.Refresh();
             }
+        }
 
         private void DeleteLoadedPartitions()
+        {
+            using (new ProfilerUtility.ProfilerScope($"{nameof(DeleteLoadedPartitions)}"))
             {
                 if (!Data.HasLoadedPartitions) return;
 
@@ -185,8 +219,11 @@ namespace VertexColor.ScenePartition.Editor
                     File.Delete(scenePartition.Value.filePath);
                 }
             }
+        }
 
         public void LoadPartitions(ulong[] ids)
+        {
+            using (new ProfilerUtility.ProfilerScope($"{nameof(LoadPartitions)}"))
             {
                 SortedSet<ulong> partitionIds = new SortedSet<ulong>();
 
@@ -201,6 +238,36 @@ namespace VertexColor.ScenePartition.Editor
 
                 LoadScenePartitions(partitionIds);
             }
+        }
+
+        public void LoadPartitionsAdditive(ulong[] ids)
+        {
+            using (new ProfilerUtility.ProfilerScope($"{nameof(LoadPartitions)}"))
+            {
+                SortedSet<ulong> partitionIds = new SortedSet<ulong>();
+
+                // Additive partitions to load.
+                for (int i = 0; i < ids.Length; i++)
+                {
+                    SortedSet<ulong> connections = ScenePartitionUtils.FindDeeplyLinkedObjects(Data.ScenePartitions, ids[i]);
+                    foreach (ulong c in connections)
+                    {
+                        partitionIds.Add(c);
+                    }
+                }
+
+                // Partitions already loaded.
+                if (Data.HasLoadedPartitions)
+                {
+                    foreach (KeyValuePair<ulong, ScenePartition> item in Data.LoadedScenePartitions)
+                    {
+                        partitionIds.Add(item.Key);
+                    }
+                }
+
+                LoadScenePartitions(partitionIds);
+            }
+        }
 
         private SortedSet<ulong> GetAlwaysLoadIds()
         {
@@ -219,6 +286,8 @@ namespace VertexColor.ScenePartition.Editor
         }
 
         public void GenerateSceneGridData()
+        {
+            using (new ProfilerUtility.ProfilerScope($"{nameof(GenerateSceneGridData)}"))
             {
                 LoadAll();
 
@@ -277,7 +346,7 @@ namespace VertexColor.ScenePartition.Editor
 
                 for (int i = 0; i < ids.Length; i++)
                 {
-                Debug.Log($"{ids[i].assetGUID} | {ids[i].identifierType} | {ids[i].targetObjectId} | {ids[i].targetPrefabId}");
+                    //Debug.Log($"{ids[i].assetGUID} | {ids[i].identifierType} | {ids[i].targetObjectId} | {ids[i].targetPrefabId}");
 
                     if (ids[i].targetPrefabId == 0) // 0 = no prefab.
                     {
@@ -291,6 +360,7 @@ namespace VertexColor.ScenePartition.Editor
 
                 Unload();
             }
+        }
 
         public void LoadCell(int gridId)
         {
@@ -300,9 +370,197 @@ namespace VertexColor.ScenePartition.Editor
             }
         }
 
+        public void LoadCellAdditive(int gridId)
+        {
+            if (Data.SceneGrid.Grid.TryGetValue(gridId, out GridList ids))
+            {
+                LoadPartitionsAdditive(ids.list.ToArray());
+            }
+        }
+
         public void ClearCache()
         {
             data = null;
         }
+
+        private Dictionary<ulong, string> GetSceneObjectNames(in string[] sceneData)
+        {
+            using ProfilerUtility.ProfilerScope profilerScope = new(nameof(GetSceneObjectNames));
+
+            Dictionary<ulong, string> sceneObjectNameById = new Dictionary<ulong, string>();
+
+            const string objectIdPattern = @"&(\d+)";
+
+            int lastIndex = sceneData.Length;
+            for (int i = sceneData.Length - 1; i >= 0; i--)
+            {
+                bool foundName = false;
+
+                {   // GameObjects.
+                    const string gameObjectHeaderPattern = "--- !u!1 &";
+                    if (!foundName && sceneData[i].StartsWith(gameObjectHeaderPattern))
+                    {
+
+                        Match match = Regex.Match(sceneData[i], objectIdPattern);
+                        if (!match.Success) continue;
+                        if (!ulong.TryParse(match.Groups[1].Value, out ulong id)) continue;
+
+                        for (int j = i; j < lastIndex; j++)
+                        {
+                            const string namePattern = "m_Name: ";
+                            int nameStartIndex = sceneData[j].LastIndexOf(namePattern);
+                            if (nameStartIndex < 0) continue;
+
+                            nameStartIndex += namePattern.Length;
+
+                            string name = sceneData[j][nameStartIndex..];
+                            sceneObjectNameById.Add(id, name);
+                            foundName = true;
+                            break;
+                        }
+                    }
+                }
+
+                {   // Prefabs.
+                    const string prefabHeaderPattern = "--- !u!1001 &";
+                    if (!foundName && sceneData[i].StartsWith(prefabHeaderPattern))
+                    {
+                        Match match = Regex.Match(sceneData[i], objectIdPattern);
+                        if (!match.Success) continue;
+                        if (!ulong.TryParse(match.Groups[1].Value, out ulong id)) continue;
+
+                        // Get name form property override in Scene.
+                        for (int j = i; j < lastIndex; j++)
+                        {
+                            const string propertyPattern = "propertyPath: m_Name";
+                            int propertyStartIndex = sceneData[j].LastIndexOf(propertyPattern);
+                            if (propertyStartIndex < 0) continue;
+
+                            const string valuePattern = "value: ";
+                            int valueStartIndex = sceneData[j + 1].LastIndexOf(valuePattern);
+                            if (valueStartIndex < 0) continue;
+
+                            valueStartIndex += valuePattern.Length;
+
+                            string name = sceneData[j + 1][valueStartIndex..];
+                            sceneObjectNameById.Add(id, name);
+                            foundName = true;
+                            break;
+                        }
+
+                        // Get name from prefab in AssetDatabase.
+                        if (!foundName)
+                        {
+                            // Find the match using regex
+                            const string guidPattern = @"guid:\s(\w+)";
+                            Match guidMatch = Regex.Match(sceneData[lastIndex - 1], guidPattern);
+
+                            if (guidMatch.Success)
+                            {
+                                // Extract the GUID
+                                string guid = guidMatch.Groups[1].Value;
+
+                                string path = AssetDatabase.GUIDToAssetPath(guid);
+                                string name = Path.GetFileNameWithoutExtension(path);
+                                sceneObjectNameById.Add(id, name);
+                                foundName = true;
+                            }
+                        }
+                    }
+                }
+
+                if (sceneData[i].StartsWith("---"))
+                {
+                    lastIndex = i;
+                    continue;
+                }
+            }
+
+            return sceneObjectNameById;
+        }
+
+        private bool TryGetObjectTypeName(string data, out string objectTypeName)
+        {
+            objectTypeName = data.Remove(data.Length - 1);
+            return true;
+        }
+
+        private void GetObjectInfo(in string[] sceneData, in Dictionary<ulong, string> sceneObjectNameById, int index, int lastIndex, ulong objectId, out string objectInfo)
+        {
+            using ProfilerUtility.ProfilerScope profilerScope = new(nameof(GetObjectInfo));
+
+            objectInfo = "";
+
+            // Try get scene object name.
+            bool foundSceneObjectName = false;
+
+            // If it is a gameObject or prefab try to get the name directly.
+            const string gameObjectHeaderPattern = "--- !u!1 &";
+            const string prefabHeaderPattern = "--- !u!1001 &";
+            if (!foundSceneObjectName && sceneData[index].StartsWith(gameObjectHeaderPattern) || sceneData[index].StartsWith(prefabHeaderPattern))
+            {
+                if (sceneObjectNameById.TryGetValue(objectId, out string sceneObjectName))
+                {
+                    objectInfo += $"-{sceneObjectName}";
+                    foundSceneObjectName = true;
+                }
+            }
+
+            if (!foundSceneObjectName)
+            {
+                // Most components have a property that links to the GameObject.
+                for (int j = index; j < lastIndex; j++)
+                {
+                    const string gameObjectPattern = @"m_GameObject:\s{fileID:\s(\d+)}";
+
+                    // Find the match using regex
+                    Match gameObjectMatch = Regex.Match(sceneData[j], gameObjectPattern);
+
+                    if (!gameObjectMatch.Success) continue;
+
+                    if (ulong.TryParse(gameObjectMatch.Groups[1].Value, out ulong fileNumber))
+                    {
+                        if (fileNumber == 0) break; // 0 == nothing.
+                        if (!sceneObjectNameById.TryGetValue(fileNumber, out string sceneObjectName)) break;
+
+                        objectInfo += $"-{sceneObjectName}";
+                        foundSceneObjectName = true;
+                    }
+
+                    break;
+                }
+            }
+
+            if (!foundSceneObjectName)
+            {
+                // Some have a property that links to the PrefabInstance.
+                for (int j = index; j < lastIndex; j++)
+                {
+                    const string prefabInstancePattern = @"m_PrefabInstance:\s{fileID:\s(\d+)}";
+
+                    // Find the match using regex
+                    Match prefabInstanceMatch = Regex.Match(sceneData[j], prefabInstancePattern);
+
+                    if (!prefabInstanceMatch.Success) continue;
+
+                    if (ulong.TryParse(prefabInstanceMatch.Groups[1].Value, out ulong fileNumber))
+                    {
+                        if (fileNumber == 0) break; // 0 == nothing.
+                        if (!sceneObjectNameById.TryGetValue(fileNumber, out string sceneObjectName)) break;
+
+                        objectInfo += $"-{sceneObjectName}";
+                        foundSceneObjectName = true;
+                    }
+
+                    break;
+                }
+            }
+
+            // Try get object type name.
+            if (TryGetObjectTypeName(sceneData[index + 1], out string objectTypeName))
+            {
+                objectInfo += $"-{objectTypeName}";
+            }
+        }
     }
 }

Editor/ScenePartitionSOEditor.cs

@@ -1,4 +1,3 @@
-using System.Collections.Generic;
 using UnityEditor;
 using UnityEngine;
 
@@ -9,7 +8,6 @@ namespace VertexColor.ScenePartition.Editor
     {
         private ulong id = 0;
         private int gridId = 0;
-        private bool foldoutGroupEnabled = false;
 
         public override void OnInspectorGUI()
         {
@@ -39,32 +37,29 @@ namespace VertexColor.ScenePartition.Editor
 
                 EditorGUIUtils.HorizontalLine();
 
-                using (new EditorGUILayout.HorizontalScope())
+                if (GUILayout.Button("Load All"))
-                {
-                    if (GUILayout.Button("Load All", EditorStyles.miniButtonLeft))
                 {
                     scenePartitionSO.LoadAll();
                 }
 
-                    if (GUILayout.Button("Unload", EditorStyles.miniButtonRight))
+                using (new EditorGUILayout.HorizontalScope())
+                {
+                    if (GUILayout.Button(new GUIContent("Unload", "Empty the scene and save it (so it has no changes in source control)."), EditorStyles.miniButtonLeft))
                     {
                         scenePartitionSO.Unload();
                     }
-                }
 
-                using (new EditorGUILayout.HorizontalScope())
+                    if (GUILayout.Button(new GUIContent("Reload", "Discard changes and reload loaded partitions."), EditorStyles.miniButtonRight))
-                {
-                    if (GUILayout.Button("Save", EditorStyles.miniButtonLeft))
-                    {
-                        scenePartitionSO.Save();
-                    }
-
-                    if (GUILayout.Button(new GUIContent("Reload", "Discard changes and reload"), EditorStyles.miniButtonRight))
                     {
                         scenePartitionSO.Reload();
                     }
                 }
 
+                if (GUILayout.Button("Save"))
+                {
+                    scenePartitionSO.Save();
+                }
+
                 EditorGUIUtils.HorizontalLine();
 
                 using (new EditorGUILayout.HorizontalScope())
@@ -87,6 +82,8 @@ namespace VertexColor.ScenePartition.Editor
                 }
 
                 if (scenePartitionSO.Data.SceneGrid != null)
+                {
+                    using (new EditorGUILayout.HorizontalScope())
                     {
                         gridId = EditorGUILayout.IntField("gridId", gridId);
 
@@ -94,26 +91,6 @@ namespace VertexColor.ScenePartition.Editor
                         {
                             scenePartitionSO.LoadCell(gridId);
                         }
-
-                    using (EditorGUIUtils.FoldoutHeaderScope foldoutGroup = new EditorGUIUtils.FoldoutHeaderScope("gridData", ref foldoutGroupEnabled))
-                    {
-                        if (!foldoutGroupEnabled) return;
-
-                        EditorGUILayout.LabelField($"generatedSceneGrid");
-
-                        foreach (KeyValuePair<int, GridList> item in scenePartitionSO.Data.SceneGrid.Grid)
-                        {
-                            EditorGUILayout.LongField("gridId", item.Key);
-
-                            EditorGUI.indentLevel++;
-
-                            foreach (ulong id in item.Value.list)
-                            {
-                                EditorGUILayout.LongField((long)id);
-                            }
-
-                            EditorGUI.indentLevel--;
-                        }
                     }
                 }
             }

Editor/ScenePartitionSceneViewEditor.cs

@@ -66,6 +66,7 @@ namespace VertexColor.ScenePartition.Editor
                 GenericMenu menu = new GenericMenu();
 
                 menu.AddItem(new GUIContent($"Load {gridId}"), false, Load, gridId);
+                menu.AddItem(new GUIContent($"LoadAdditive {gridId}"), false, LoadAdditive, gridId);
                 menu.ShowAsContext();
 
                 Event.current.Use();
@@ -95,5 +96,14 @@ namespace VertexColor.ScenePartition.Editor
 
             scenePartitionSO.LoadCell(cellId);
         }
+
+        private static void LoadAdditive(object gridId)
+        {
+            if (scenePartitionSO == null) return;
+            if (gridId == null) return;
+            if (gridId is not int cellId) return;
+
+            scenePartitionSO.LoadCellAdditive(cellId);
+        }
     }
 }

Editor/ScenePartitionToolbar.cs

@@ -0,0 +1,130 @@
+using UnityEditor;
+using UnityEditor.Overlays;
+using UnityEditor.Toolbars;
+using UnityEngine;
+
+namespace VertexColor.ScenePartition.Editor
+{
+    [Overlay(typeof(SceneView), "ScenePartition")]
+    public class ScenePartitionToolbar : ToolbarOverlay
+    {
+        private const string iconPath = "Packages/com.vertexcolor.scenepartition/Editor/Icons";
+
+        public ScenePartitionToolbar() : base(Load.Id, Save.Id, Reload.Id, Unload.Id, GenerateGrid.Id) { }
+
+        [EditorToolbarElement(Id, typeof(SceneView))]
+        public class Load : EditorToolbarButton, IAccessContainerWindow
+        {
+            public const string Id = "ScenePartition/Load";
+
+            public EditorWindow containerWindow { get; set; }
+
+            public Load()
+            {
+                text = "Load";
+                icon = AssetDatabase.LoadAssetAtPath<Texture2D>($"{iconPath}/Load.png");
+                tooltip = "Load the entire scene";
+                clicked += OnClick;
+            }
+
+            void OnClick()
+            {
+                if (!ScenePartitionUtils.TryGetScenePartitionSOForActiveScene(out ScenePartitionSO scenePartitionSO)) return;
+
+                scenePartitionSO.LoadAll();
+            }
+        }
+
+        [EditorToolbarElement(Id, typeof(SceneView))]
+        public class Save : EditorToolbarButton, IAccessContainerWindow
+        {
+            public const string Id = "ScenePartition/Save";
+
+            public EditorWindow containerWindow { get; set; }
+
+            public Save()
+            {
+                text = "Save";
+                icon = AssetDatabase.LoadAssetAtPath<Texture2D>($"{iconPath}/Save.png");
+                tooltip = "Save scene";
+                clicked += OnClick;
+            }
+
+            void OnClick()
+            {
+                if (!ScenePartitionUtils.TryGetScenePartitionSOForActiveScene(out ScenePartitionSO scenePartitionSO)) return;
+
+                scenePartitionSO.Save();
+            }
+        }
+
+        [EditorToolbarElement(Id, typeof(SceneView))]
+        public class Reload : EditorToolbarButton, IAccessContainerWindow
+        {
+            public const string Id = "ScenePartition/Reload";
+
+            public EditorWindow containerWindow { get; set; }
+
+            public Reload()
+            {
+                text = "Reload";
+                icon = AssetDatabase.LoadAssetAtPath<Texture2D>($"{iconPath}/Reload.png");
+                tooltip = "Discard changes and reload scene";
+                clicked += OnClick;
+            }
+
+            void OnClick()
+            {
+                if (!ScenePartitionUtils.TryGetScenePartitionSOForActiveScene(out ScenePartitionSO scenePartitionSO)) return;
+
+                scenePartitionSO.Reload();
+            }
+        }
+
+        [EditorToolbarElement(Id, typeof(SceneView))]
+        public class Unload : EditorToolbarButton, IAccessContainerWindow
+        {
+            public const string Id = "ScenePartition/Unload";
+
+            public EditorWindow containerWindow { get; set; }
+
+            public Unload()
+            {
+                text = "Unload";
+                icon = AssetDatabase.LoadAssetAtPath<Texture2D>($"{iconPath}/Unload.png");
+                tooltip = "Unload the scene";
+                clicked += OnClick;
+            }
+
+            void OnClick()
+            {
+                if (!ScenePartitionUtils.TryGetScenePartitionSOForActiveScene(out ScenePartitionSO scenePartitionSO)) return;
+
+                scenePartitionSO.Unload();
+            }
+        }
+
+        [EditorToolbarElement(Id, typeof(SceneView))]
+        public class GenerateGrid : EditorToolbarButton, IAccessContainerWindow
+        {
+            public const string Id = "ScenePartition/GenerateGrid";
+
+            public EditorWindow containerWindow { get; set; }
+
+            public GenerateGrid()
+            {
+                text = "GenerateGrid";
+                icon = AssetDatabase.LoadAssetAtPath<Texture2D>($"{iconPath}/GenerateGrid.png");
+                tooltip = "Generate scene grid";
+                clicked += OnClick;
+            }
+
+            void OnClick()
+            {
+                if (!ScenePartitionUtils.TryGetScenePartitionSOForActiveScene(out ScenePartitionSO scenePartitionSO)) return;
+
+                scenePartitionSO.GenerateSceneGridData();
+            }
+        }
+    }
+}

Editor/ScenePartitionToolbar.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: fb370b37d068c4244acc38008f1960f1
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Editor/ScenePartitionUtils.cs

@@ -32,11 +32,14 @@ namespace VertexColor.ScenePartition.Editor
         }
 
         public static SortedSet<ulong> FindDeeplyLinkedObjects(SortedList<ulong, ScenePartition> scenePartitions, ulong partitionId)
+        {
+            using (new ProfilerUtility.ProfilerScope($"{nameof(FindDeeplyLinkedObjects)}"))
             {
                 SortedSet<ulong> linkedObjects = new SortedSet<ulong>();
                 FindDeeplyLinkedObjectsRecursive(scenePartitions, partitionId, linkedObjects);
                 return linkedObjects;
             }
+        }
 
         private static void FindDeeplyLinkedObjectsRecursive(SortedList<ulong, ScenePartition> scenePartitions, ulong partitionId, SortedSet<ulong> linkedObjects)
         {
@@ -59,6 +62,8 @@ namespace VertexColor.ScenePartition.Editor
         }
 
         public static bool TryGetScenePartitionSOForActiveScene(out ScenePartitionSO scenePartitionSO)
+        {
+            using (new ProfilerUtility.ProfilerScope($"{nameof(TryGetScenePartitionSOForActiveScene)}"))
             {
                 scenePartitionSO = null;
 
@@ -88,4 +93,19 @@ namespace VertexColor.ScenePartition.Editor
                 return false;
             }
         }
+
+        public static ulong GetTargetObjectId(Object targetObject)
+        {
+            GlobalObjectId globalId = GlobalObjectId.GetGlobalObjectIdSlow(targetObject);
+
+            if (globalId.targetPrefabId == 0) // 0 = no prefab.
+            {
+                return globalId.targetObjectId;
+            }
+            else
+            {
+                return globalId.targetPrefabId;
+            }
+        }
+    }
 }

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) <year> <copyright holders>
+Copyright (c) 2023 Max Kruf
 
 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:
 

README.md

@@ -1,2 +1,9 @@
-# template-unity-project
+# Scene Partition
 
+**One file per scene object** (in editor time). 
+
+Trying to reduce the overlap between users by splitting the scene data into multiple small files. This removes the need to save the entire scene into one file. Usually when working with multiple people on a level you have to lock the entire scene to prevent having to merge the conflicting changes. This approach tries to avoid that and if you have conflicting changes they are on small readable files which should be easier to merge.
+
+Next to that an other tool is to put the scene objects into a grid to allow for **partial scene loading** (in editor time), this could be helpful when working on large scenes where you only want to test/work on a small portion. Keeping the editor fast and your work focused.
+
+The scene data is stored outside of the asset folder to prevent Unity from importing many small files into the asset database, instead it is saved into a data folder located at `ProjectRoot/Data/ScenePartition`.

Runtime/ProfilerUtility.cs

@@ -0,0 +1,26 @@
+using UnityEngine;
+using UnityEngine.Profiling;
+
+namespace VertexColor.ScenePartition
+{
+    public static class ProfilerUtility
+    {
+        public struct ProfilerScope : System.IDisposable
+        {
+            public ProfilerScope(string name)
+            {
+                Profiler.BeginSample(name);
+            }
+
+            public ProfilerScope(string name, Object target)
+            {
+                Profiler.BeginSample(name, target);
+            }
+
+            public readonly void Dispose()
+            {
+                Profiler.EndSample();
+            }
+        }
+    }
+}

Runtime/ProfilerUtility.cs.meta

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