// 打哪些牌可以立直.
public bool tryGetReachHaiIndex(Tehai a_tehai, Hai tsumoHai, out List <int> haiIndexList)
{
haiIndexList = new List <int>();
// 鳴いている場合は、リーチできない。
if (a_tehai.isNaki())
{
return(false);
}
/// find all reach-enabled hais in a_tehai, also the tsumoHai.
_reachHaiList.Clear();
// As _jyunTehais won't sort automatically on new hais added,
// so we can add tsumo hai directly to simplify the checks.
Tehai tehai_copy = new Tehai(a_tehai);
tehai_copy.addJyunTehai(tsumoHai);
tehai_copy.Sort();
Hai[] jyunTehai = tehai_copy.getJyunTehai();
for (int i = 0; i < jyunTehai.Length; i++)
{
Hai haiTemp = tehai_copy.removeJyunTehaiAt(i);
for (int id = Hai.ID_MIN; id <= Hai.ID_MAX; id++)
{
countFormat.setCounterFormat(tehai_copy, new Hai(id));
if (countFormat.calculateCombisCount(combis) > 0)
{
_reachHaiList.Add(new Hai(haiTemp));
break;
}
}
tehai_copy.insertJyunTehai(i, haiTemp);
}
/// transfer to index list.
if (_reachHaiList.Count > 0)
{
jyunTehai = a_tehai.getJyunTehai();
for (int i = 0; i < _reachHaiList.Count; i++)
{
for (int j = 0; j < jyunTehai.Length; j++)
{
if (jyunTehai[j].ID == _reachHaiList[i].ID && !haiIndexList.Contains(j))
{
haiIndexList.Add(j);
}
}
if (tsumoHai.ID == _reachHaiList[i].ID && !haiIndexList.Contains(jyunTehai.Length))
{
haiIndexList.Add(jyunTehai.Length);
}
}
haiIndexList.Sort();
return(true);
}
return(false);
}