Make virtual methods protected.

.gitignore

@@ -1,3 +1,4 @@
 compile_commands.json
 .ycm_extra_conf.py
 tags
+__pycache__/

CMakeLists.txt

@@ -54,6 +54,7 @@ add_executable(${PROJECT_NAME}
 	src/ingamescene.cpp
 	src/sizenotifiable.cpp
 	src/sizeratio.cpp
+	src/gamescenebase.cpp
 )
 
 target_include_directories(${PROJECT_NAME} SYSTEM

src/gamescenebase.cpp

@@ -0,0 +1,26 @@
+#include "gamescenebase.hpp"
+
+namespace curry {
+	GameSceneBase::GameSceneBase() :
+		m_wants_to_quit(false)
+	{
+	}
+
+	void GameSceneBase::prepare() {
+		m_wants_to_quit = false;
+		this->on_prepare();
+	}
+
+	void GameSceneBase::destroy() noexcept {
+		set_wants_to_quit();
+		this->on_destroy();
+	}
+
+	bool GameSceneBase::wants_to_quit() const {
+		return m_wants_to_quit;
+	}
+
+	void GameSceneBase::set_wants_to_quit() {
+		m_wants_to_quit = true;
+	}
+} //namespace curry

src/gamescenebase.hpp

@@ -3,11 +3,22 @@
 namespace curry {
 	class GameSceneBase {
 	public:
+		GameSceneBase();
 		virtual ~GameSceneBase() noexcept = default;
 
-		virtual void prepare() = 0;
+		void prepare();
+		void destroy() noexcept;
+
 		virtual void exec() = 0;
-		virtual bool wants_to_quit() const = 0;
+
-		virtual void destroy() noexcept = 0;
+		bool wants_to_quit() const;
+		void set_wants_to_quit();
+
+	protected:
+		virtual void on_prepare() = 0;
+		virtual void on_destroy() noexcept = 0;
+
+	private:
+		bool m_wants_to_quit;
 	};
 } //namespace curry

src/ingamescene.cpp

@@ -9,7 +9,7 @@ namespace curry {
 
 	IngameScene::~IngameScene() noexcept = default;
 
-	void IngameScene::prepare() {
+	void IngameScene::on_prepare() {
 		std::cout << "game prepare\n";
 	}
 
@@ -17,11 +17,7 @@ namespace curry {
 		std::cout << "game exec\n";
 	}
 
-	bool IngameScene::wants_to_quit() const {
+	void IngameScene::on_destroy() noexcept {
-		return true;
-	}
-
-	void IngameScene::destroy() noexcept {
 		std::cout << "game destroy\n";
 	}
 } //namespace curry

src/ingamescene.hpp

@@ -12,10 +12,11 @@ namespace curry {
 		explicit IngameScene (cloonel::SDLMain* parSDLMain);
 		virtual ~IngameScene() noexcept;
 
-		virtual void prepare() override;
 		virtual void exec() override;
-		virtual bool wants_to_quit() const override;
+
-		virtual void destroy() noexcept override;
+	protected:
+		virtual void on_prepare() override;
+		virtual void on_destroy() noexcept override;
 
 	private:
 		cloonel::SDLMain* m_sdlmain;