public static void CleanLevel(this GameLevel level)
{
if (level == null)
{
return;
}
level.RemoveTowers();
level.RemoveCreeps();
level.GetStoredPaths().Clear();
level.RemoveCurrentTracers();
ResetPlayerGoldAndLives();
level.DeadCreepCount = 0;
level.ExitReachedCreepCount = 0;
level.WaveGenerator.Dispose();
level.IsCompleted = false;
}