fCraft.BuildingCommands.Fill2DCallback C# (CSharp) Method

        private static void Fill2DCallback( Player player, Vector3I[] marks, object tag )
        {
            DrawOperation op = ( DrawOperation )tag;
            if ( !op.Prepare( marks ) )
                return;
            if ( player.WorldMap.GetBlock( marks[0] ) == Block.Air ) {
                player.Confirm( Fill2DConfirmCallback, op, "{0}: Replace air?", op.Description );
            } else {
                Fill2DConfirmCallback( player, op, false );
            }
        }