RadioButtons added, Difficulty class created

src/main/java/org/example/OptionsScreen/Difficulty.java

+package org.example.OptionsScreen;
+
+public class Difficulty {
+    private String easy, normal, hard;
+
+    /* public Difficulty (easy) {
+
+    } */
+}

src/main/java/org/example/OptionsScreen/OptionsScreenController.java

 package org.example.OptionsScreen;
 
 import javafx.event.ActionEvent;
+import org.example.SnakeGame.SnakeGame;
 import org.example.StartScreen.StartScreen;
 
 public class OptionsScreenController {
 
     public void openSnakeGame(ActionEvent actionEvent) {
-       StartScreen.changeScene("/fxml/SnakeGame.fxml", "/styles/styles.css");
         StartScreen.changeScene("/fxml/SnakeGame.fxml", "/styles/styles.css");
 
 

src/main/java/org/example/StartScreen/StartScreen.java

@@ -63,6 +63,7 @@ public class StartScreen extends Application {
         log.info("Application started");
         // Image icon= new Image(new FileInputStream("src/main/resources/images...png")); Icon screen
         //stage.getIcons().add(icon);  Icon screen
+
         stage.show();
 
     }

src/main/resources/fxml/OptionsScreen.fxml

@@ -5,7 +5,7 @@
 <?import javafx.scene.layout.*?>
 <?import javafx.scene.text.*?>
 
-<GridPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="500.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/17.0.2-ea" xmlns:fx="http://javafx.com/fxml/1" fx:controller="org.example.OptionsScreen.OptionsScreenController">
+<GridPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="500.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/11.0.14-internal" xmlns:fx="http://javafx.com/fxml/1" fx:controller="org.example.OptionsScreen.OptionsScreenController">
   <columnConstraints>
     <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
   </columnConstraints>
@@ -32,27 +32,33 @@
             <Insets left="100.0" top="70.0" />
          </GridPane.margin>
       </Label>
-      <RadioButton mnemonicParsing="false" text="Easy" GridPane.rowIndex="1">
+      <RadioButton fx:id="easyButton" mnemonicParsing="false" text="Easy" GridPane.rowIndex="1">
          <GridPane.margin>
             <Insets bottom="50.0" left="235.0" />
          </GridPane.margin>
+         <toggleGroup>
+            <ToggleGroup fx:id="difficulty" />
+         </toggleGroup>
       </RadioButton>
-      <RadioButton mnemonicParsing="false" text="Normal" GridPane.rowIndex="1">
+      <RadioButton fx:id="normalButton" mnemonicParsing="false" text="Normal" toggleGroup="$difficulty" GridPane.rowIndex="1">
          <GridPane.margin>
             <Insets bottom="50.0" left="320.0" />
          </GridPane.margin>
       </RadioButton>
-      <RadioButton mnemonicParsing="false" text="Hard" GridPane.rowIndex="1">
+      <RadioButton fx:id="hardButton" mnemonicParsing="false" text="Hard" toggleGroup="$difficulty" GridPane.rowIndex="1">
          <GridPane.margin>
             <Insets bottom="50.0" left="410.0" />
          </GridPane.margin>
       </RadioButton>
-      <RadioButton mnemonicParsing="false" text="Normal" GridPane.rowIndex="1">
+      <RadioButton fx:id="normalBackground" mnemonicParsing="false" text="Normal" GridPane.rowIndex="1">
          <GridPane.margin>
             <Insets left="235.0" top="70.0" />
          </GridPane.margin>
+         <toggleGroup>
+            <ToggleGroup fx:id="background" />
+         </toggleGroup>
       </RadioButton>
-      <RadioButton mnemonicParsing="false" text="Bezwinger-Edition" GridPane.rowIndex="1">
+      <RadioButton fx:id="bezwingerBackground" mnemonicParsing="false" selected="true" text="Bezwinger-Edition" toggleGroup="$background" GridPane.rowIndex="1">
          <GridPane.margin>
             <Insets left="320.0" top="70.0" />
          </GridPane.margin>

src/main/resources/fxml/hello.fxml

@@ -26,7 +26,7 @@ Adding stylesheets="/styles/styles.css" yet does not work, see FxmlGuiDriver as
    <children>
       <Label text="First name:" />
       <Label text="Last name:" GridPane.rowIndex="1" />
-      <Button mnemonicParsing="false" onAction="#sayHello" text="Say hello" GridPane.rowIndex="2" />
+      <Button mnemonicParsing="false" text="Say hello" GridPane.rowIndex="2" />
       <TextField fx:id="firstNameField" GridPane.columnIndex="1" />
       <TextField fx:id="lastNameField" GridPane.columnIndex="1" GridPane.rowIndex="1" />
       <Label fx:id="helloLabel" styleClass="hello-message" text="                   "