public void rotate(bool isRight)
{
//copy
puyopuyo prev_puyo = new puyopuyo();
prev_puyo.init();
prev_puyo.copy(m_temp_puyo);
//rotate
m_temp_puyo.rotate(isRight);
//check
if (m_game_field.check_collision(ref m_temp_puyo) == true)
{
m_temp_puyo.copy(prev_puyo);
}
}