added 4 more Notifications for Model -> View interaction

Projekte/mdga/model/src/main/java/pp.mdga/notification/ShieldActiveNotification.java

@@ -0,0 +1,29 @@
+package pp.mdga.notification;
+
+import java.util.UUID;
+
+/**
+ * This class will be used to hold all ShieldActiveNotification relevant data.
+ */
+public class ShieldActiveNotification extends Notification{
+
+    private UUID pieceId;
+
+    /**
+     * This constructor is used to create a new ShieldActiveNotification
+     *
+     * @param pieceId the pieceId
+     */
+    public ShieldActiveNotification(UUID pieceId) {
+        this.pieceId = pieceId;
+    }
+
+    /**
+     * This method returns the pieceId
+     *
+     * @return the pieceId
+     */
+    public UUID getPieceId() {
+        return pieceId;
+    }
+}