fix: do not render invisible Scene and their root Table

app/src/main/java/org/vibecoders/moongazer/Game.java

@@ -7,6 +7,8 @@ import com.badlogic.gdx.scenes.scene2d.Stage;
 import com.badlogic.gdx.scenes.scene2d.ui.Table;
 import com.badlogic.gdx.utils.viewport.ScreenViewport;
 
+import java.util.ArrayList;
+
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.vibecoders.moongazer.managers.Assets;
@@ -14,8 +16,8 @@ import org.vibecoders.moongazer.scenes.*;
 
 public class Game extends ApplicationAdapter {
     private static final Logger log = LoggerFactory.getLogger(Game.class);
-    public static State state = State.INTRO;
+    public State state = State.INTRO;
-    public static Transition transition = null;
+    public Transition transition = null;
     SpriteBatch batch;
     // UI stage
     public Stage stage;
@@ -23,7 +25,8 @@ public class Game extends ApplicationAdapter {
     // Scenes
     Scene currentScene;
     Scene introScene;
-    public static Scene mainMenuScene;
+    public Scene mainMenuScene;
+    public ArrayList<Scene> gameScenes;
 
     @Override
     public void create() {
@@ -38,7 +41,9 @@ public class Game extends ApplicationAdapter {
         root.setFillParent(true);
         stage.addActor(root);
         // Scene initialization
+        gameScenes = new ArrayList<>();
         currentScene = introScene = new Intro(this);
+        gameScenes.add(introScene);
         // By the end of the intro, the main menu scene will be created and assigned to Game.mainMenuScene
     }
 
@@ -54,7 +59,7 @@ public class Game extends ApplicationAdapter {
             stage.draw();
             return;
         }
-        switch (Game.state) {
+        switch (this.state) {
             case INTRO:
                 currentScene = introScene;
                 break;
@@ -67,6 +72,20 @@ public class Game extends ApplicationAdapter {
             default:
                 log.warn("Unknown state: {}", state);
         }
+
+        for (var scene : gameScenes) {
+            // log.trace("Checking scene visibility: {}", scene.getClass().getSimpleName());
+            if (scene != currentScene && scene.root.isVisible()) {
+                log.trace("Hiding scene: {}", scene.getClass().getSimpleName());
+                scene.root.setVisible(false);
+            }
+        }
+
+        if (!currentScene.root.isVisible()) {
+            log.trace("Showing current scene: {}", currentScene.getClass().getSimpleName());
+            currentScene.root.setVisible(true);
+        }
+        
         batch.begin();
         currentScene.render(batch);
         batch.end();

app/src/main/java/org/vibecoders/moongazer/scenes/Intro.java

@@ -29,6 +29,8 @@ public class Intro extends Scene {
         startTime = System.currentTimeMillis() + 500;
         log.info("Starting to load all remaining assets...");
         Assets.loadAll();
+        game.mainMenuScene = new MainMenu(game);
+        game.gameScenes.add(game.mainMenuScene);
     }
 
     /**
@@ -38,10 +40,10 @@ public class Intro extends Scene {
     @Override
     public void render(SpriteBatch batch) {
         if (System.currentTimeMillis() > endTime + 2000 && endTime != 0) {
-            if (Game.transition == null) {
+            if (game.transition == null) {
                 Assets.waitUntilLoaded();
-                Game.mainMenuScene = new MainMenu(game);
+                log.info("All assets loaded successfully.");
-                Game.transition = new Transition(this, Game.mainMenuScene, State.MAIN_MENU, 1000);
+                game.transition = new Transition(game, this, game.mainMenuScene, State.MAIN_MENU, 1000);
             }
             batch.draw(TEXTURE_BLACK, 0, 0, WINDOW_WIDTH, WINDOW_HEIGHT);
             return;

app/src/main/java/org/vibecoders/moongazer/scenes/MainMenu.java

@@ -21,7 +21,8 @@ public class MainMenu extends Scene {
         var font = Assets.getFont("ui", 24);
         textLabel = new Label("Moongazer", new LabelStyle(font, Color.BLACK));
         textLabel.setPosition(WINDOW_WIDTH / 2f - textLabel.getWidth() / 2f, WINDOW_HEIGHT / 2f - textLabel.getHeight() / 2f);
-        game.root.addActor(textLabel);
+        root.addActor(textLabel);
+        game.stage.addActor(root);
     }
     /**
      * Renders the main menu scene.

app/src/main/java/org/vibecoders/moongazer/scenes/Scene.java

@@ -5,13 +5,16 @@ import org.vibecoders.moongazer.Game;
 import org.vibecoders.moongazer.managers.Assets;
 
 import com.badlogic.gdx.graphics.g2d.SpriteBatch;
+import com.badlogic.gdx.scenes.scene2d.ui.Table;
 
 public abstract class Scene {
     protected final Logger log = org.slf4j.LoggerFactory.getLogger(getClass());
+    public Table root;
     public Scene(Game game) {
         this();
     }
     public Scene() {
+        root = new Table();
         if (!Assets.isLoadedAll() && Assets.isStartLoadAll()) {
             Assets.waitUntilLoaded();
         }

app/src/main/java/org/vibecoders/moongazer/scenes/Transition.java

@@ -9,6 +9,7 @@ import com.badlogic.gdx.graphics.g2d.SpriteBatch;
  * Handles transitions between scenes with a linear transition effect.
  */
 public class Transition extends Scene {
+    private Game game;
     private Scene from;
     private Scene to;
     private State targetState;
@@ -22,7 +23,10 @@ public class Transition extends Scene {
      * @param targetState The target state of the game after the transition.
      * @param duration The duration of the transition in milliseconds.
      */
-    public Transition(Scene from, Scene to, State targetState, long duration) {
+    public Transition(Game game, Scene from, Scene to, State targetState, long duration) {
+        // Transition does not need to render UI elements
+        this.root = null;
+        this.game = game;
         this.from = from;
         this.to = to;
         this.targetState = targetState;
@@ -39,15 +43,17 @@ public class Transition extends Scene {
         var toOpacity = ((float) (System.currentTimeMillis() - startTime)) / duration;
         if (toOpacity >= 0.99) {
             log.trace("Transition complete to state: {}", targetState);
-            Game.state = targetState;
+            game.state = targetState;
-            Game.transition = null;
+            game.transition = null;
             return;
         }
         var fromOpacity = 1 - toOpacity;
         log.trace("Transition opacities - from: {}, to: {}", fromOpacity, toOpacity);
         batch.setColor(1, 1, 1, fromOpacity);
+        from.root.setVisible(true);
         from.render(batch);
         batch.setColor(1, 1, 1, toOpacity);
+        to.root.setVisible(true);
         to.render(batch);
     }
 }