update GameScene.fxml, update GameSceneController.java #2

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

 package de.hdm_stuttgart.battlearena.Controller;
 
+import de.hdm_stuttgart.battlearena.Model.Inputs.InputHandler;
+
+import javafx.animation.AnimationTimer;
+import javafx.fxml.FXML;
+import javafx.fxml.Initializable;
+import javafx.scene.canvas.Canvas;
+import javafx.scene.canvas.GraphicsContext;
+
 import org.apache.logging.log4j.Logger;
 import org.apache.logging.log4j.LogManager;
 
-public class GameSceneController {
+import java.net.URL;
+import java.util.ResourceBundle;
+
+public class GameSceneController implements Initializable {
 
     private static final Logger log = LogManager.getLogger(GameSceneController.class);
 
-}
+    @FXML
+    private Canvas canvas2D;
+
+    private GraphicsContext graphicsContext2D;
+
+    InputHandler inputHandler = InputHandler.getInstance();
+
+
+    @Override
+    public void initialize(URL url, ResourceBundle resourceBundle) {
+        graphicsContext2D = canvas2D.getGraphicsContext2D();
+
+        AnimationTimer gameLoop = new AnimationTimer() {
+            @Override
+            public void handle(long l) {
+                updateContent();
+                renderContent(graphicsContext2D);
+            }
+        };
+    }
+
+    private void updateContent() {
+
+    }
+
+    private void renderContent(GraphicsContext graphicsContext) {
+
+    }
+}
\ No newline at end of file

src/main/resources/fxml/GameScene.fxml

 <?xml version="1.0" encoding="UTF-8"?>
 
+<?import javafx.scene.canvas.Canvas?>
 <?import javafx.scene.layout.AnchorPane?>
+<?import javafx.scene.layout.StackPane?>
 
 
 <AnchorPane prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/19" xmlns:fx="http://javafx.com/fxml/1" fx:controller="de.hdm_stuttgart.battlearena.Controller.GameSceneController">
-
+   <children>
+      <StackPane prefHeight="400.0" prefWidth="600.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
+         <children>
+            <Canvas fx:id="canvas2D" height="400.0" width="600.0" />
+         </children>
+      </StackPane>
+   </children>
 </AnchorPane>