Added warning message for upgrading users of the game

core/src/io/anuke/mindustry/core/Control.java

@@ -119,7 +119,8 @@ public class Control extends Module{
 			"port", port+"",
 			"name", android || gwt ? "player" : UCore.getProperty("user.name"),
 			"servers", "",
-			"color", Color.rgba8888(playerColors[8])
+			"color", Color.rgba8888(playerColors[8]),
+			"lastVersion", "3.2"
 		);
 
 		KeyBinds.load();
@@ -245,6 +246,23 @@ public class Control extends Module{
 		return tutorial;
 	}
 
+	private void checkOldUser(){
+		boolean hasPlayed = false;
+
+		for(Map map : world.maps().getAllMaps()){
+			if(Settings.getInt("hiscore" + map.name) != 0){
+				hasPlayed = true;
+				break;
+			}
+		}
+
+		if(hasPlayed && Settings.getString("lastVersion").equals("3.2")){
+			Timers.runTask(1f, () -> ui.showInfo("$text.changes"));
+			Settings.putString("lastVersion", "3.3");
+			Settings.save();
+		}
+	}
+
 	@Override
 	public void dispose(){
 		Platform.instance.onGameExit();
@@ -269,10 +287,11 @@ public class Control extends Module{
 		Timers.run(1f, Musics::shuffleAll);
 		
 		Entities.initPhysics();
-		
 		Entities.collisions().setCollider(tilesize, world::solid);
 
 		Platform.instance.updateRPC();
+
+		checkOldUser();
 	}
 	
 	@Override