public IEnumerable <GameState> Play()
{
if (IsWolf)
{
foreach (Pos p in PosWolf.GetWolfMoves())
{
byte w = p.ByteVal;
if (w != S0 && w != S1 && w != S2 && w != S3 && w != S4)
{
yield return(MakeNewGameStateWolf(p));
}
}
}
else
{
byte[] sheep = new byte[] { S0, S1, S2, S3, S4 };
foreach (byte olds in sheep)
{
foreach (Pos pNewSheep in new Pos(olds).GetSheepMoves())
{
byte news = pNewSheep.ByteVal;
if (news == W || news == S0 || news == S1 || news == S2 || news == S3 || news == S4)
{
continue;
}
yield return(MakeNewGameStateSheep(sheep, olds, news));
}
}
}
}
public Pos[] GetValidWolfMoves()
{
List <Pos> list = new List <Pos>();
foreach (Pos p in PosWolf.GetWolfMoves())
{
byte by = p.ByteVal;
if (by != S0 && by != S1 && by != S2 && by != S3 && by != S4)
{
list.Add(p);
}
}
return(list.ToArray());
}
