/** Selects random move among the empty cells on the board. */
HexPoint MoHexPlayoutPolicy::GenerateRandomMove(const StoneBoard& brd)
{
HexPoint ret = INVALID_POINT;
while (true)
{
BenzeneAssert(!m_moves.empty());
ret = m_moves.back();
m_moves.pop_back();
if (brd.IsEmpty(ret))
break;
}
return ret;
}
HexPoint MoHexPlayoutPolicy::GenerateResponseMove(HexColor toPlay,
HexPoint lastMove,
const StoneBoard& brd)
{
std::size_t num = m_response[toPlay][lastMove].size();
if (num > m_shared->Config().responseThreshold)
{
HexPoint move = m_response[toPlay][lastMove][m_random.Int(num)];
if (brd.IsEmpty(move))
return move;
}
return INVALID_POINT;
}