From cd7f08320990f1a37e2d012b7e3ae3761c5a7267 Mon Sep 17 00:00:00 2001
From: max-001 <maxsmits21@kpnmail.nl>
Date: Wed, 6 Nov 2024 10:21:39 +0100
Subject: Renamed methods and replaced the queue with a simple string

---
 src/crepe/api/SceneManager.cpp | 17 ++++++++---------
 src/crepe/api/SceneManager.h   |  6 +++---
 src/crepe/api/SceneManager.hpp |  8 +++++++-
 src/example/scene_manager.cpp  |  8 ++++----
 4 files changed, 22 insertions(+), 17 deletions(-)

diff --git a/src/crepe/api/SceneManager.cpp b/src/crepe/api/SceneManager.cpp
index 6fc8f9b..08f036d 100644
--- a/src/crepe/api/SceneManager.cpp
+++ b/src/crepe/api/SceneManager.cpp
@@ -12,17 +12,16 @@ SceneManager & SceneManager::get_instance() {
 	return instance;
 }
 
-// Push the next scene onto the queue
-void SceneManager::load_scene(const std::string & name) { next_scene.push(name); }
-
-// Load a new scene from the queue (if there is one)
-void SceneManager::empty_queue() {
-	while (!next_scene.empty()) {
-		string name = next_scene.front();
-		next_scene.pop();
+// Set the next scene (this scene will be loaded at the end of the frame)
+void SceneManager::set_next_scene(const std::string & name) {
+	next_scene = name;
+}
 
+// Load a new scene (if there is one)
+void SceneManager::load_next_scene() {
+	if (!next_scene.empty()) {
 		for (auto & scene : scenes) {
-			if (scene->name == name) {
+			if (scene->name == next_scene) {
 				// Delete all components of the current scene
 				ComponentManager & mgr = ComponentManager::get_instance();
 				mgr.delete_all_components();
diff --git a/src/crepe/api/SceneManager.h b/src/crepe/api/SceneManager.h
index b7d5150..eaf1ba1 100644
--- a/src/crepe/api/SceneManager.h
+++ b/src/crepe/api/SceneManager.h
@@ -20,15 +20,15 @@ public:
 public:
 	template <typename T>
 	void add_scene(const std::string & name);
-	void load_scene(const std::string & name);
-	void empty_queue();
+	void set_next_scene(const std::string & name);
+	void load_next_scene();
 
 private:
 	SceneManager();
 
 private:
 	std::vector<std::unique_ptr<Scene>> scenes;
-	std::queue<std::string> next_scene;
+	std::string next_scene;
 };
 
 } // namespace crepe
diff --git a/src/crepe/api/SceneManager.hpp b/src/crepe/api/SceneManager.hpp
index 82787ed..e2ba2da 100644
--- a/src/crepe/api/SceneManager.hpp
+++ b/src/crepe/api/SceneManager.hpp
@@ -5,8 +5,14 @@ namespace crepe {
 // Add a new concrete scene to the scene manager
 template <typename T>
 void SceneManager::add_scene(const std::string & name) {
-	static_assert(std::is_base_of<Scene, T>::value, "T must be derived from Scene");
+	static_assert(std::is_base_of<Scene, T>::value,
+				  "T must be derived from Scene");
 	scenes.emplace_back(make_unique<T>(name));
+
+	// The first scene added, is the one that will be loaded at the beginning
+	if (next_scene.empty()) {
+		next_scene = name;
+	}
 }
 
 } // namespace crepe
diff --git a/src/example/scene_manager.cpp b/src/example/scene_manager.cpp
index f1fe86a..9d832eb 100644
--- a/src/example/scene_manager.cpp
+++ b/src/example/scene_manager.cpp
@@ -40,9 +40,9 @@ int main() {
 	scene_mgr.add_scene<concreteScene2>("scene2");
 
 	// Load scene1 to the queue
-	scene_mgr.load_scene("scene1");
+	scene_mgr.set_next_scene("scene1");
 	// Empty the queue (now scene1 is loaded)
-	scene_mgr.empty_queue();
+	scene_mgr.load_next_scene();
 
 	// Get the Metadata components of each GameObject of Scene1
 	ComponentManager & component_mgr = ComponentManager::get_instance();
@@ -57,9 +57,9 @@ int main() {
 	}
 
 	// Load scene2 to the queue
-	scene_mgr.load_scene("scene2");
+	scene_mgr.set_next_scene("scene2");
 	// Empty the queue (now scene2 is loaded)
-	scene_mgr.empty_queue();
+	scene_mgr.load_next_scene();
 
 	// Get the Metadata components of each GameObject of Scene2
 	metadata = component_mgr.get_components_by_type<Metadata>();
-- 
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