edited SeaSynchronizer , EditorState, ServerGameLogic

added JavaDocs for the new and adapted functions
added a new invalid map for testing purposes
fixed implemented the logic to check for invalid maps in the method received in ServerGameLogic

Projekte/battleship/client/src/main/java/pp/battleship/client/gui/SeaSynchronizer.java

@@ -138,7 +138,7 @@ public Spatial visit(Battleship ship) {
 
     /**
      * Creates the appropriate graphical representation of the specified battleship.
-     * The representation is either a detailed model or a simple box based on the length of the ship.
+     * The representation is a detailed model based on the length of the ship.
      *
      * @param ship the battleship to be represented
      * @return the spatial representing the battleship
@@ -208,6 +208,12 @@ private Spatial createBattleship(Battleship ship) {
 
         return model;
     }
+
+    /**
+     * Creates a detailed 3D model to represent a "Big Ship"
+     * @param ship
+     * @return the spatial representing the "Big Ship" battleship
+     */
     private Spatial createBigShip(Battleship ship) {
         final Spatial model = app.getAssetManager().loadModel(DESTROYER);
 
@@ -219,6 +225,11 @@ private Spatial createBigShip(Battleship ship) {
         return model;
     }
 
+    /**
+     * Creates a detailed 3D model to represent a "Medium Ship"
+     * @param ship
+     * @return the spatial representing the "Medium Ship" battleship
+     */
     private Spatial createMediumShip(Battleship ship) {
         final Spatial model = app.getAssetManager().loadModel(FERRY);
 
@@ -230,6 +241,11 @@ private Spatial createMediumShip(Battleship ship) {
         return model;
     }
 
+    /**
+     * Creates a detailed 3D model to represent a "Small Ship"
+     * @param ship
+     * @return the spatial representing the "Small Ship" battleship
+     */
     private Spatial createSmallShip(Battleship ship) {
         final Spatial model = app.getAssetManager().loadModel(SMALL);