/// <summary>
/// 下移
/// </summary>
public void BrickDown()
{
lock (m_arr)
{
if (m_curBrick != null && m_curBrick.CanDropMove(m_arr, m_rows, m_columns) == true)
{
ClearCurBrick();
m_curBrick.KeyDownMove();
SetArrayValue();
}
}
}