added init for mdga with all states and messages

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

@@ -0,0 +1,47 @@
+package pp.mdga.game;
+
+/**
+ * This class will be used the represent a Node on which the pieces can travel along
+ */
+public class Node {
+    protected Piece occupant;
+
+    public Node() {}
+
+    /**
+     * This method is used to get an occupant of the Node.
+     *
+     * @return the current occupant of the node
+     */
+    public Piece getOccupant() {
+        return occupant;
+    }
+
+    /**
+     * This method is used to set a new Occupant
+     *
+     * @param occupant the new occupant of the node
+     */
+    public void setOccupant(Piece occupant) {
+        if (occupant.isSuppressed()){
+            occupant.setShield(ShieldState.NONE);
+        }
+        this.occupant = occupant;
+    }
+
+    /**
+     * This method is used to clear the node of its occupant
+     */
+    public void clearOccupant() {
+        this.occupant = null;
+    }
+
+    /**
+     * This method is used to return a boolean value based on the occupation status
+     *
+     * @return the boolean value corresponding to the occupation status
+     */
+    public boolean isOccupied() {
+        return occupant != null;
+    }
+}