Turn notification

core/src/mindustry/ui/fragments/HudFragment.java

@@ -41,7 +41,13 @@ public class HudFragment extends Fragment{
 
     private long lastToast;
 
+    @Override
     public void build(Group parent){
+        Events.on(TurnEvent.class, e -> {
+            //TODO localize, clean up, etc
+            int attacked = universe.getSectorsAttacked();
+            showToast("New turn: [accent]" + universe.getTurn() + "[]" + (attacked > 0 ? "\n[scarlet]" + Iconc.warning + " " + attacked + " sectors attacked!": ""));
+        });
 
         //menu at top left
         parent.fill(cont -> {