Changed FFboardFiller so no two element are on the same position in the start

src/main/java/model/FFboardFiller.java

@@ -20,9 +20,12 @@ public class FFboardFiller {
                 Element element;
                 Position p;
                 do {
-                   p=new Position(random.nextInt(boardData.getRowCount()), random.nextInt(boardData.getColumnCount()));
+                   p=positions.get(random.nextInt(positions.size()));
                    element= ve.instanciate(boardData,p);
-                }while (!boardData.addElement(element) && positions.contains(element.getPosition()));
+                }while (!boardData.addElement(element));
+                if (element instanceof ConnexElement) {
+                    positions.removeAll(boardData.getElements().get(element.getType().ordinal()).stream().map(x ->x.getPosition()).toList());
+                    System.out.println("0");}
                 positions.remove(p);
                 counter[ve.ordinal()]--;
             }

src/main/java/model/Road.java

@@ -11,6 +11,6 @@ public class Road extends Land implements Element,ConnexElement {
 
     @Override
     public ElementFactory getFactory() {
-        return null;
+        return factory;
     }
 }