public PlayResult(Board board)
{
valid = new PointSet();
invalid = new PointSet();
Point p = new Point();
for(int x=0;x<Info.N;++x)
{
for (int y = 0; y < Info.N; ++y)
{
p.x = x;
p.y = y;
Info.GameState s = board.test_play(p);
switch(s)
{
case Info.GameState.VALID_MOVE:
valid.set(p);
break;
case Info.GameState.INVALID_MOVE:
invalid.set(p);
break;
default:
break;
}
}
}
}
public Info.GameState play(Point p)
{
if (p == Point.Pass)
{
if (points.Count > 0)
{
if (points.Last() == Point.Pass)
{
points.Add(p);
return Info.GameState.END_GAME;
}
}
points.Add(p);
turn = 1 - turn;
return Info.GameState.VALID_MOVE;
}
if (p.x < 0 || p.x >= Info.N || p.y < 0 || p.y >= Info.N)
{
return Info.GameState.INVALID_MOVE;
}
if (get(p) != Info.Stones.EMPTY)
{
return Info.GameState.INVALID_MOVE;
}
if ((PointSet.around[p.x, p.y] & stones[opponent()]).size() >= 3)
{
return Info.GameState.INVALID_MOVE;
}
points.Add(p);
stones[turn].set(p);
List<Point> list = PointSet.around[p.x, p.y].toList();
PointSet kill = new PointSet();
foreach (Point i in list)
{
if ((PointSet.around[i.x, i.y] & stones[turn]).size() >= 3)
{
kill.set(i);
}
}
stones[opponent()] = stones[opponent()] - kill;
turn = 1 - turn;
return Info.GameState.VALID_MOVE;
}