refactor main game loop

CMakeLists.txt

@@ -31,6 +31,7 @@ find_package(nlohmann_json CONFIG REQUIRED)
 
 set(TETRIS_SOURCES
     src/main.cpp
+    src/app/TetrisApp.cpp
     src/gameplay/core/Game.cpp
     src/core/GravityManager.cpp
     src/core/state/StateManager.cpp
@@ -67,6 +68,7 @@ set(TETRIS_SOURCES
     src/states/PlayingState.cpp
 )
 
+
 if(APPLE)
     set(APP_ICON "${CMAKE_SOURCE_DIR}/assets/favicon/AppIcon.icns")
     if(EXISTS "${APP_ICON}")

src/app/TetrisApp.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include <memory>
+
+// TetrisApp is the top-level application orchestrator.
+//
+// Responsibilities:
+// - SDL/TTF init + shutdown
+// - Asset/music loading + loading screen
+// - Main loop + state transitions
+//
+// It uses a PIMPL to keep `TetrisApp.h` light (faster builds) and to avoid leaking
+// SDL-heavy includes into every translation unit.
+class TetrisApp {
+public:
+    TetrisApp();
+    ~TetrisApp();
+
+    TetrisApp(const TetrisApp&) = delete;
+    TetrisApp& operator=(const TetrisApp&) = delete;
+
+    // Runs the application until exit is requested.
+    // Returns a non-zero exit code on initialization failure.
+    int run();
+
+private:
+    struct Impl;
+    std::unique_ptr<Impl> impl_;
+};

src/core/Config.h

@@ -14,7 +14,7 @@ namespace Config {
     namespace Window {
         constexpr int DEFAULT_WIDTH = 1200;
         constexpr int DEFAULT_HEIGHT = 1000;
-        constexpr const char* DEFAULT_TITLE = "Tetris (SDL3)";
+        constexpr const char* DEFAULT_TITLE = "SpaceTris (SDL3)";
         constexpr bool DEFAULT_VSYNC = true;
     }
     

src/states/MenuState.cpp

@@ -1297,7 +1297,7 @@ void MenuState::render(SDL_Renderer* renderer, float logicalScale, SDL_Rect logi
                 const SDL_Color textCol{200, 210, 230, 255};
                 const SDL_Color keyCol{255, 255, 255, 255};
 
-                f->draw(renderer, x, y, "SDL3 TETRIS", 1.05f, keyCol); y += lineGap;
+                f->draw(renderer, x, y, "SDL3 SPACETRIS", 1.05f, keyCol); y += lineGap;
                 f->draw(renderer, x, y, "C++20 / SDL3 / SDL3_ttf", 0.80f, textCol); y += lineGap + 6.0f;
 
                 f->draw(renderer, x, y, "GAMEPLAY", 0.85f, SDL_Color{180,200,255,255}); y += lineGap;