/// <summary>
 /// This is our main gameloop and get's called every INTERVAL
 /// </summary>
 /// <param name="sender"></param>
 /// <param name="e"></param>
 /// <see cref="INTERVAL"/>
 private void OnTimerTick(object sender, ElapsedEventArgs e)
 {
     if (!CurrentBlock.SafeFall(gameBoard))
     {
         AddBlockToBoard();
         CurrentBlock = NextBlock;
         if (!CurrentBlock.CanFall(gameBoard))
         {
             GameOver();
         }
         NextBlock = SpawnBlock();
     }
     ProcessFullRows();
     Draw();
 }