public bool DoMoveDown()
{
transform.position += new Vector3(0, -grid.squareHeight, 0);
if (IsValidBlockPosition())
{
UpdateGrid();
return(true);
}
else
{
transform.position += new Vector3(0, grid.squareHeight, 0);
game.gainPoints(grid.DeleteFullRows());
game.SpawnNext();
enabled = false;
return(false);
}
}