hud refactor (part II)

src/frontend/screens.h

@@ -11,7 +11,7 @@ class HudRenderer;
 class Engine;
 class Camera;
 class Batch2D;
-class ContentGfxCache;
+class LevelFrontend;
 class LevelController;
 
 /* Screen is a mainloop state */
@@ -37,11 +37,11 @@ public:
 };
 
 class LevelScreen : public Screen {
-    Level* level;
-    LevelController* controller;
-    WorldRenderer* worldRenderer;
-    HudRenderer* hud;
-    ContentGfxCache* cache;
+    std::unique_ptr<Level> level;
+    std::unique_ptr<LevelFrontend> frontend;
+    std::unique_ptr<HudRenderer> hud;
+    std::unique_ptr<WorldRenderer> worldRenderer;
+    std::unique_ptr<LevelController> controller;
     
     bool hudVisible = true;
     void updateHotkeys();
@@ -53,4 +53,4 @@ public:
     void draw(float delta) override;
 };
 
-#endif // FRONTEND_SCREENS_H_
+#endif // FRONTEND_SCREENS_H_