Updated 'PlayerData' class.

Updated the 'PlayerData' class by adding the 'isFinished' method to it. In Addition, the empty constructor was optimized to initalize all class attributes for serializable cases.

Projekte/mdga/model/src/main/java/pp/mdga/game/PlayerData.java

@@ -43,10 +43,23 @@ public PlayerData(Color color) {
         }
     }
 
+    /**
+     * Constructor.
+     */
     private PlayerData() {
-        homeNodes = null;
-        waitingArea = null;
-        pieces = null;
+        homeNodes = new HomeNode[4];
+        waitingArea = new Piece[4];
+        pieces = new Piece[4];
+    }
+
+    /**
+     * This method will be used to check if the player is finished.
+     * ToDo: Currently return always false. Implement logic!
+     *
+     * @return true or false.
+     */
+    public boolean isFinished() {
+        return false;
     }
 
     /**