feat: add scene loading imgui testing things

lightkeeper/src/Lightkeeper.cpp

@@ -6,6 +6,7 @@
 #include <destrum/Components/Physics/Rigidbody.h>
 #include <destrum/Components/Physics/BoxCollider.h>
 #include <destrum/Scene/Scene.h>
+#include <destrum/Serialization/SceneSerializer.h>
 
 #include "destrum/Components/MeshRendererComponent.h"
 #include "destrum/Components/Rotator.h"
@@ -17,12 +18,27 @@
 
 
 #include <filesystem>
+#include <stdexcept>
 #include <string>
+#include <string_view>
 
 #include "imgui.h"
 #include "destrum/Components/Physics/SphereCollider.h"
 #include "destrum/Util/ModelDocUtils.h"
 
+namespace {
+    std::filesystem::path ResolveScenePath(std::string_view value) {
+        if (value.empty()) {
+            throw std::invalid_argument("Scene path cannot be empty");
+        }
+
+        if (value.find("://") != std::string_view::npos) {
+            return AssetFS::GetInstance().GetFullPath(value);
+        }
+
+        return std::filesystem::path{value};
+    }
+}
 
 LightKeeper::LightKeeper() : App()
 {
@@ -478,6 +494,66 @@ void LightKeeper::customUpdate(float dt)
         SceneManager::GetInstance().GetCurrentScene().GetPhysics().RefreshGameObject(*sphere);
     }
     ImGui::End();
+
+    ImGui::Begin("Scene Debug");
+    ImGui::InputText("Scene path", scenePath, sizeof(scenePath));
+    ImGui::InputText("New scene name", newSceneName, sizeof(newSceneName));
+
+    if (ImGui::Button("Save Current Scene")) {
+        try {
+            const auto path = ResolveScenePath(scenePath);
+            const auto parent = path.parent_path();
+            if (!parent.empty()) {
+                std::filesystem::create_directories(parent);
+            }
+
+            if (SceneSerializer::Save(
+                    SceneManager::GetInstance().GetCurrentScene(),
+                    path)) {
+                sceneStatus = "Saved scene to " + path.string();
+            } else {
+                sceneStatus = "Failed to save scene to " + path.string();
+            }
+        } catch (const std::exception& exception) {
+            sceneStatus = std::string{"Save failed: "} + exception.what();
+        }
+    }
+
+    ImGui::SameLine();
+    if (ImGui::Button("Load Scene")) {
+        try {
+            const auto path = ResolveScenePath(scenePath);
+            if (SceneSerializer::Load(
+                    SceneManager::GetInstance().GetCurrentScene(),
+                    path)) {
+                sceneStatus = "Loaded scene from " + path.string();
+            } else {
+                sceneStatus = "Failed to load scene from " + path.string();
+            }
+        } catch (const std::exception& exception) {
+            sceneStatus = std::string{"Load failed: "} + exception.what();
+        }
+    }
+
+    if (ImGui::Button("New Empty Scene")) {
+        try {
+            const std::string name = newSceneName[0] != '\0'
+                ? newSceneName
+                : "EmptyScene";
+            auto& sceneManager = SceneManager::GetInstance();
+            const int newSceneIndex = sceneManager.GetSceneCount();
+            sceneManager.CreateScene(name);
+            sceneManager.SwitchScene(newSceneIndex);
+            sceneStatus = "Created and switched to scene '" + name + "'";
+        } catch (const std::exception& exception) {
+            sceneStatus = std::string{"New scene failed: "} + exception.what();
+        }
+    }
+
+    if (!sceneStatus.empty()) {
+        ImGui::TextWrapped("%s", sceneStatus.c_str());
+    }
+    ImGui::End();
 }
 
 void LightKeeper::customDraw()