Align editor runtime scene handoff

editor/app/Services/Scene/EditorSceneRuntime.cpp

@@ -1,5 +1,7 @@
 #include "Scene/EditorSceneRuntime.h"
 
+#include <XCEngine/Scene/Scene.h>
+
 #include <cmath>
 
 namespace XCEngine::UI::Editor::App {
@@ -294,6 +296,10 @@ std::uint64_t EditorSceneRuntime::GetInspectorRevision() const {
     return m_inspectorRevision;
 }
 
+std::uint64_t EditorSceneRuntime::GetSceneContentRevision() const {
+    return m_sceneContentRevision;
+}
+
 bool EditorSceneRuntime::SetSelection(std::string_view itemId) {
     const std::optional<EditorSceneObjectId> gameObjectId =
         ParseEditorGameObjectItemId(itemId);
@@ -335,6 +341,33 @@ void EditorSceneRuntime::ClearSelection() {
     SelectionService().ClearSelection();
 }
 
+bool EditorSceneRuntime::NewScene(std::string_view sceneName) {
+    if (m_backend == nullptr || !m_backend->NewScene(sceneName)) {
+        return false;
+    }
+
+    m_startupSceneResult.ready = true;
+    m_startupSceneResult.loadedFromDisk = false;
+    m_startupSceneResult.scenePath = std::filesystem::path();
+    if (::XCEngine::Components::Scene* activeScene = m_backend->GetActiveScene();
+        activeScene != nullptr) {
+        m_startupSceneResult.sceneName = activeScene->GetName();
+    } else {
+        m_startupSceneResult.sceneName = sceneName.empty()
+            ? std::string("Untitled")
+            : std::string(sceneName);
+    }
+
+    ResetTransformEditHistory();
+    ResetToolInteractionState();
+    SelectionService().ClearSelection();
+    IncrementInspectorRevision();
+    IncrementSceneContentRevision();
+    RefreshScene();
+    EnsureSceneSelection();
+    return true;
+}
+
 bool EditorSceneRuntime::OpenSceneAsset(const std::filesystem::path& scenePath) {
     if (m_backend == nullptr || !m_backend->OpenSceneAsset(scenePath)) {
         return false;
@@ -355,6 +388,14 @@ bool EditorSceneRuntime::OpenSceneAsset(const std::filesystem::path& scenePath)
     return true;
 }
 
+bool EditorSceneRuntime::SaveScene(const std::filesystem::path& scenePath) {
+    return m_backend != nullptr && m_backend->SaveActiveScene(scenePath);
+}
+
+::XCEngine::Components::Scene* EditorSceneRuntime::GetActiveScene() const {
+    return m_backend != nullptr ? m_backend->GetActiveScene() : nullptr;
+}
+
 bool EditorSceneRuntime::RenameGameObject(
     std::string_view itemId,
     std::string_view newName) {