Add UseAssetImportPathRelative to Editor options and use it by default to store imported asset path relative to the project folder

Source/Editor/Editor.cs

@@ -1199,6 +1199,7 @@ namespace FlaxEditor
         {
             public byte AutoReloadScriptsOnMainWindowFocus;
             public byte ForceScriptCompilationOnStartup;
+            public byte UseAssetImportPathRelative;
             public byte AutoRebuildCSG;
             public float AutoRebuildCSGTimeoutMs;
             public byte AutoRebuildNavMesh;

Source/Editor/Managed/ManagedEditor.Internal.cpp

@@ -794,6 +794,9 @@ public:
     static void SetOptions(ManagedEditor::InternalOptions* options)
     {
         ManagedEditor::ManagedEditorOptions = *options;
+
+        // Apply options
+        AssetsImportingManager::UseImportPathRelative = ManagedEditor::ManagedEditorOptions.UseAssetImportPathRelative != 0;
     }
 
     static void DrawNavMesh()

Source/Editor/Managed/ManagedEditor.h

@@ -26,6 +26,7 @@ public:
     {
         byte AutoReloadScriptsOnMainWindowFocus = 1;
         byte ForceScriptCompilationOnStartup = 1;
+        byte UseAssetImportPathRelative = 1;
         byte AutoRebuildCSG = 1;
         float AutoRebuildCSGTimeoutMs = 50;
         byte AutoRebuildNavMesh = 1;

Source/Editor/Options/GeneralOptions.cs

@@ -148,6 +148,13 @@ namespace FlaxEditor.Options
         [EditorDisplay("Scripting", "Auto Save Visual Script On Play Start"), EditorOrder(505), Tooltip("Determines whether automatically save the Visual Script asset editors when starting the play mode in editor.")]
         public bool AutoSaveVisualScriptOnPlayStart { get; set; } = true;
 
+        /// <summary>
+        /// If checked, imported file path will be stored relative to the project folder within imported asset metadata. Otherwise will use absolute path.
+        /// </summary>
+        [DefaultValue(true)]
+        [EditorDisplay("Content"), EditorOrder(550)]
+        public bool UseAssetImportPathRelative { get; set; } = true;
+
         /// <summary>
         /// Gets or sets a value indicating whether perform automatic CSG rebuild on brush change.
         /// </summary>

Source/Editor/Options/OptionsModule.cs

@@ -186,6 +186,7 @@ namespace FlaxEditor.Options
             Editor.InternalOptions internalOptions;
             internalOptions.AutoReloadScriptsOnMainWindowFocus = (byte)(Options.General.AutoReloadScriptsOnMainWindowFocus ? 1 : 0);
             internalOptions.ForceScriptCompilationOnStartup = (byte)(Options.General.ForceScriptCompilationOnStartup ? 1 : 0);
+            internalOptions.UseAssetImportPathRelative = (byte)(Options.General.UseAssetImportPathRelative ? 1 : 0);
             internalOptions.AutoRebuildCSG = (byte)(Options.General.AutoRebuildCSG ? 1 : 0);
             internalOptions.AutoRebuildCSGTimeoutMs = Options.General.AutoRebuildCSGTimeoutMs;
             internalOptions.AutoRebuildNavMesh = (byte)(Options.General.AutoRebuildNavMesh ? 1 : 0);

Source/Engine/Content/BinaryAsset.cpp

@@ -4,15 +4,16 @@
 #include "Cache/AssetsCache.h"
 #include "Storage/ContentStorageManager.h"
 #include "Loading/Tasks/LoadAssetDataTask.h"
+#include "Factories/BinaryAssetFactory.h"
 #include "Engine/ContentImporters/AssetsImportingManager.h"
 #include "Engine/Content/Content.h"
 #include "Engine/Serialization/JsonTools.h"
 #include "Engine/Debug/Exceptions/JsonParseException.h"
-#include "Factories/BinaryAssetFactory.h"
 #include "Engine/Threading/ThreadPoolTask.h"
 #if USE_EDITOR
 #include "Engine/Platform/FileSystem.h"
 #include "Engine/Threading/Threading.h"
+#include "Engine/Engine/Globals.h"
 #endif
 
 REGISTER_BINARY_ASSET_ABSTRACT(BinaryAsset, "FlaxEngine.BinaryAsset");
@@ -123,6 +124,12 @@ void BinaryAsset::GetImportMetadata(String& path, String& username) const
     {
         path = JsonTools::GetString(document, "ImportPath");
         username = JsonTools::GetString(document, "ImportUsername");
+        if (path.HasChars() && FileSystem::IsRelative(path))
+        {
+            // Convert path back to thr absolute (eg. if stored in relative format)
+            path = Globals::ProjectFolder / path;
+            StringUtils::PathRemoveRelativeParts(path);
+        }
     }
     else
     {

Source/Engine/ContentImporters/AssetsImportingManager.cpp

@@ -3,6 +3,7 @@
 #if COMPILE_WITH_ASSETS_IMPORTER
 
 #include "AssetsImportingManager.h"
+#include "Engine/Core/Log.h"
 #include "Engine/Core/Utilities.h"
 #include "Engine/Serialization/JsonWriters.h"
 #include "Engine/Threading/MainThreadTask.h"
@@ -10,9 +11,9 @@
 #include "Engine/Content/Content.h"
 #include "Engine/Content/Cache/AssetsCache.h"
 #include "Engine/Engine/EngineService.h"
-#include "Engine/Core/Log.h"
 #include "Engine/Platform/FileSystem.h"
 #include "Engine/Platform/Platform.h"
+#include "Engine/Engine/Globals.h"
 #include "ImportTexture.h"
 #include "ImportModelFile.h"
 #include "ImportAudio.h"
@@ -71,6 +72,7 @@ AssetsImportingManagerService AssetsImportingManagerServiceInstance;
 
 Array<AssetImporter> AssetsImportingManager::Importers;
 Array<AssetCreator> AssetsImportingManager::Creators;
+bool AssetsImportingManager::UseImportPathRelative = false;
 
 CreateAssetContext::CreateAssetContext(const StringView& inputPath, const StringView& outputPath, const Guid& id, void* arg)
 {
@@ -161,7 +163,15 @@ bool CreateAssetContext::AllocateChunk(int32 index)
 void CreateAssetContext::AddMeta(JsonWriter& writer) const
 {
     writer.JKEY("ImportPath");
-    writer.String(InputPath);
+    if (AssetsImportingManager::UseImportPathRelative && !FileSystem::IsRelative(InputPath))
+    {
+        const String relativePath = FileSystem::ConvertAbsolutePathToRelative(Globals::ProjectFolder, InputPath);
+        writer.String(relativePath);
+    }
+    else
+    {
+        writer.String(InputPath);
+    }
     writer.JKEY("ImportUsername");
     writer.String(Platform::GetUserName());
 }

Source/Engine/ContentImporters/AssetsImportingManager.h

@@ -22,6 +22,11 @@ public:
     /// </summary>
     static Array<AssetCreator> Creators;
 
+    /// <summary>
+    /// If true store asset import path relative to the current workspace, otherwise will store absolute path.
+    /// </summary>
+    static bool UseImportPathRelative;
+
 public:
     /// <summary>
     /// The create texture tag (using internal import pipeline to crate texture asset from custom image source).