update(Controller): minor fixes

src/main/java/de/hdm_stuttgart/battlearena/Controller/MainMenuController.java

 package de.hdm_stuttgart.battlearena.Controller;
 
 import de.hdm_stuttgart.battlearena.Controller.Utilities.SceneLoader;
+import de.hdm_stuttgart.battlearena.Model.DataStorage.Classes.Exceptions.DatabaseException;
+import de.hdm_stuttgart.battlearena.Model.DataStorage.Classes.Persistence;
 import javafx.fxml.FXML;
 import javafx.fxml.Initializable;
 import javafx.scene.control.Button;
@@ -17,6 +19,7 @@ public class MainMenuController implements Initializable {
     @FXML
     private Button exitButton;
     private final SceneLoader sceneLoader = new SceneLoader();
+    private final Persistence persistence = Persistence.getInstance();
 
     private void switchScene(String name) {
         parent.getChildren().clear();
@@ -44,7 +47,9 @@ public class MainMenuController implements Initializable {
     }
 
     @FXML
-    private void exit() {
+    private void exit() throws DatabaseException {
+        persistence.savePlayerStatistics();
+        persistence.saveSettings();
         Stage stage = (Stage) exitButton.getScene().getWindow();
         stage.close();
     }

src/main/java/de/hdm_stuttgart/battlearena/Controller/MapSelectionController.java

@@ -56,7 +56,7 @@ public class MapSelectionController implements Initializable {
     @FXML
     private void gameScene() {
         try {
-//            RuntimeInfo.getInstance().setGameMap(selectedMap, true);
+            RuntimeInfo.getInstance().setGameMap(coreMaps.get(selectedMap));
             MusicPlayerSingleton.getInstance().getMediaPlayer().dispose();
             parent.getScene().setRoot(FXMLLoader.load(Objects.requireNonNull(getClass().getResource("/fxml/GameScene.fxml"))));
         } catch (IOException e) {

src/main/resources/fxml/MultiplayerCreate.fxml

@@ -47,7 +47,7 @@
             <Insets top="20.0" />
          </VBox.margin>
       </AnchorPane>
-      <Button mnemonicParsing="false" text="Start" />
+      <Button mnemonicParsing="false" onAction="#start" text="Start" />
       <Button mnemonicParsing="false" onAction="#backButton" text="Back" />
       <Pane VBox.vgrow="ALWAYS" />
       <Pane VBox.vgrow="ALWAYS" />