ScenePartition/Editor/ScenePartitionSO.cs

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C#
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using System.Collections.Generic;
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using System.IO;
using System.Text.RegularExpressions;
using UnityEditor;
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using UnityEditor.SceneManagement;
using UnityEngine;
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using UnityEngine.SceneManagement;
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namespace VertexColor.ScenePartition.Editor
{
[CreateAssetMenu(fileName = "Scene", menuName = "Max/ScenePartitionSO")]
public class ScenePartitionSO : ScriptableObject
{
[field: SerializeField]
public SceneAsset SceneAsset { get; private set; } = null;
public string SceneName => SceneAsset == null ? name : SceneAsset.name;
public List<long> alwaysLoadIds = new List<long> { 0, 1, 2, 3, 4 };
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public ScenePartitionData Data
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{
get
{
// Load data from the ScriptableSingleton.
data ??= ScenePartitionSS.instance.GetScenePartitionData(this);
return data;
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}
}
private ScenePartitionData data = null;
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public void CreateScene()
{
if (SceneAsset != null) return;
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string scenePath = Path.Combine(AssetDatabase.GetAssetPath(this), $"../{this.name}.unity");
Scene scene = EditorSceneManager.NewScene(NewSceneSetup.EmptyScene, NewSceneMode.Single);
EditorSceneManager.SaveScene(scene, scenePath);
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Save();
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AssetDatabase.SaveAssets();
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AssetDatabase.Refresh();
SceneAsset = AssetDatabase.LoadAssetAtPath<SceneAsset>(scenePath);
AssetDatabase.SaveAssets();
AssetDatabase.Refresh();
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}
/// <summary>
/// Load partitions from disk and construct the scene file.
/// </summary>
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public void LoadAll()
{
CreateScenePartitions();
SortedSet<long> ids = new SortedSet<long>(Data.ScenePartitions.Keys);
LoadScenePartitions(ids);
}
/// <summary>
/// Discard changes and reload loaded partitions.
/// </summary>
public void Reload()
{
if (!Data.HasLoadedPartitions) return;
LoadScenePartitions(new SortedSet<long>(Data.LoadedScenePartitions.Keys));
}
private void CreateScenePartitions()
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{
string dataPath = ScenePartitionUtils.GetDataPath(this);
string[] files = Directory.GetFiles(dataPath);
Data.ScenePartitions = new ScenePartitionSortedList();
for (int i = 0; i < files.Length; i++)
{
ScenePartition scenePartition = new ScenePartition(files[i]);
Data.ScenePartitions.Add(scenePartition.id, scenePartition);
}
}
private void LoadScenePartitions(SortedSet<long> partitionIds)
{
if (!Data.HasCreatedPartitions) return;
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string scenePath = ScenePartitionUtils.GetScenePath(this);
List<string> sceneData = new List<string>();
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Data.LoadedScenePartitions.Clear();
// Add always load ids.
SortedSet<long> baseIds = GetAlwaysLoadIds();
foreach (var id in baseIds)
{
partitionIds.Add(id);
}
// Create scene data.
foreach (long id in partitionIds)
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{
ScenePartition p = Data.ScenePartitions[id];
sceneData.AddRange(File.ReadAllLines(p.filePath));
Data.LoadedScenePartitions.Add(p.id, p);
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}
// Create scene.
File.WriteAllLines(scenePath, sceneData);
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AssetDatabase.Refresh();
}
/// <summary>
/// Convert scene to partitions and save them to disk.
/// </summary>
public void Save()
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{
DeleteLoadedPartitions(); // Delete the loaded partitions from disk so we can write the new ones.
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string pattern = @"&(\d+)";
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string dataPath = ScenePartitionUtils.GetDataPath(this);
string scenePath = ScenePartitionUtils.GetScenePath(this);
// Read the data from the scene file.
string[] sceneData = File.ReadAllLines(scenePath);
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// Split it into blocks.
int lastIndex = sceneData.Length;
for (int i = sceneData.Length - 1; i >= 0; i--)
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{
if (sceneData[i].StartsWith("---")) // --- is the start of a new yaml document.
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{
Match match = Regex.Match(sceneData[i], pattern);
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if (match.Success)
{
// Extract the file number
string id = match.Groups[1].Value;
// Write data to disk.
File.WriteAllLines($"{dataPath}/{SceneName}-{id}.yaml", sceneData[i..lastIndex]);
}
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lastIndex = i;
}
}
// Write header to disk.
File.WriteAllLines($"{dataPath}/{SceneName}.yaml", sceneData[0..lastIndex]);
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}
/// <summary>
/// Empty the scene and save it (so it has no changes in source control).
/// </summary>
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public void Unload()
{
string dataPath = ScenePartitionUtils.GetDataPath(this);
string scenePath = ScenePartitionUtils.GetScenePath(this);
Scene scene = EditorSceneManager.OpenScene(scenePath, OpenSceneMode.Single);
GameObject[] gameObjects = scene.GetRootGameObjects();
for (int i = gameObjects.Length - 1; i >= 0; i--)
{
DestroyImmediate(gameObjects[i]);
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}
EditorSceneManager.SaveScene(scene);
Data.LoadedScenePartitions.Clear();
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AssetDatabase.Refresh();
}
private void DeleteLoadedPartitions()
{
if (!Data.HasLoadedPartitions) return;
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foreach (KeyValuePair<long, ScenePartition> scenePartition in Data.LoadedScenePartitions)
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{
if (!File.Exists(scenePartition.Value.filePath)) continue;
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File.Delete(scenePartition.Value.filePath);
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}
}
public void LoadPartitions(long[] ids)
{
SortedSet<long> partitionIds = new SortedSet<long>();
for (int i = 0; i < ids.Length; i++)
{
SortedSet<long> connections = ScenePartitionUtils.FindDeeplyLinkedObjects(Data.ScenePartitions, ids[i]);
foreach (long c in connections)
{
partitionIds.Add(c);
}
}
LoadScenePartitions(partitionIds);
}
private SortedSet<long> GetAlwaysLoadIds()
{
SortedSet<long> partitionIds = new SortedSet<long>();
foreach (long id in alwaysLoadIds)
{
SortedSet<long> connections = ScenePartitionUtils.FindDeeplyLinkedObjects(Data.ScenePartitions, id);
foreach (long c in connections)
{
partitionIds.Add(c);
}
}
return partitionIds;
}
public void GenerateSceneGridData()
{
LoadAll();
if (!Data.HasCreatedPartitions) return;
Scene scene = EditorSceneManager.OpenScene(ScenePartitionUtils.GetScenePath(this), OpenSceneMode.Single);
GameObject[] rootGameObjects = scene.GetRootGameObjects();
Data.SceneGrid.Grid.Clear();
//// Maybe later switch to getting the data from disk instead of loading the scene and then unloading it again.
//foreach (GameObject gameObject in rootGameObjects)
//{
// // https://forum.unity.com/threads/how-to-get-the-local-identifier-in-file-for-scene-objects.265686/
// PropertyInfo inspectorModeInfo = typeof(SerializedObject).GetProperty("inspectorMode", BindingFlags.NonPublic | BindingFlags.Instance);
// SerializedObject serializedObject = new SerializedObject(gameObject.transform);
// inspectorModeInfo.SetValue(serializedObject, InspectorMode.Debug, null);
// SerializedProperty localIdProp = serializedObject.FindProperty("m_LocalIdentfierInFile");
// long localId = localIdProp.longValue;
// if (localId == 0)
// {
// if (PrefabUtility.IsPartOfPrefabInstance(gameObject))
// {
// GlobalObjectId id = GlobalObjectId.GetGlobalObjectIdSlow(gameObject); // We could use this funtion for all objects. Might be a bit slower but is also simple.
// localId = long.Parse(id.targetPrefabId.ToString());
// Debug.Log($"{id.assetGUID} | {id.identifierType} | {id.targetObjectId} | {id.targetPrefabId}");
// if (id.targetObjectId == 0 && id.targetPrefabId == 0)
// {
// Debug.LogWarning($"Could not find LocalIdentfierInFile for {gameObject.transform} {gameObject.name} {gameObject.transform.GetInstanceID()}");
// continue;
// }
// }
// else
// {
// Debug.LogWarning($"Could not find LocalIdentfierInFile for {gameObject.transform} {gameObject.name} {gameObject.transform.GetInstanceID()}");
// continue;
// }
// }
// if (!Data.ScenePartitions.ContainsKey(localId))
// {
// Debug.LogWarning($"Could not find LocalIdentfierInFile for {gameObject.transform} {gameObject.name} {gameObject.transform.GetInstanceID()}");
// continue;
// }
// Data.SceneGrid.Insert(localId, gameObject.transform.position);
//}
GlobalObjectId[] ids = new GlobalObjectId[rootGameObjects.Length];
GlobalObjectId.GetGlobalObjectIdsSlow(rootGameObjects, ids);
for (int i = 0; i < ids.Length; i++)
{
Debug.Log($"{ids[i].assetGUID} | {ids[i].identifierType} | {ids[i].targetObjectId} | {ids[i].targetPrefabId}");
if (ids[i].targetPrefabId == 0) // 0 = no prefab.
{
Data.SceneGrid.Insert((long)ids[i].targetObjectId, rootGameObjects[i].transform.position);
}
else
{
Data.SceneGrid.Insert((long)ids[i].targetPrefabId, rootGameObjects[i].transform.position);
}
}
Unload();
}
public void LoadCell(int gridId)
{
if (Data.SceneGrid.Grid.TryGetValue(gridId, out List<long> ids))
{
LoadPartitions(ids.ToArray());
}
}
public void ClearCache()
{
data = null;
}
}
}