Solved Hausaufgabe 4 added LevelWithBox

GameProject/src/base/MultiLevelGame.java

@@ -9,12 +9,14 @@ import playground.Level6;
 import playground.Level7;
 import playground.LevelBoss;
 import playground.LevelHitTwice;
+import playground.LevelWithBox;
 
 public class MultiLevelGame extends GameLoop{
 	@Override
 	
 	void defineLevels() {  
 	    this.resetLevels();
+	    this.addLevel(new LevelWithBox());
 	    this.addLevel(new Level5());
 	    this.addLevel(new Level6());
 	    this.addLevel(new Level7());

GameProject/src/playground/LevelWithBox.java

@@ -0,0 +1,30 @@
+package playground;
+
+import java.awt.Color;
+
+import gameobjects.RectObject;
+
+/** 
+ * Class LevelWithBox creates level with red box at the top.
+ * Red box is called "Red Box".
+ * @author 26
+ */
+public class LevelWithBox extends SpaceInvadersLevel {
+	
+	/** Method creates red Box at the top in level LevelWithBox.
+	 * @param id String a string identifying the level number etc
+	 */
+	@Override
+	public void prepareLevel(String id) {
+		super.prepareLevel(id);
+		addObject(new RectObject("Red Box", this, 350, 100, 0, 0, 700, 250, Color.RED));
+	}
+	
+	/** Method shows message at the start of LevelWithBox.
+	 * @return String start message
+	 */
+	@Override
+	protected String getStartupMessage() {
+		 return "Box-Level!";
+	}
+}