/**
* This method will remove a captured group
* Each stone in the group is removed from the board and added as a liberty for all other groups
*/
private void Capture(AbGroup capturedGroup, State color)
{
foreach (Coord coord in capturedGroup.GetStones())
{
// Update the board and add the capture
_gridStones[coord.Column, coord.Row] = State.None;
_gridGroups[coord.Column, coord.Row] = 0;
switch (color)
{
case State.Black:
_capBlack++;
break;
case State.White:
_capWhite++;
break;
case State.None:
break;
default:
throw new ArgumentOutOfRangeException(nameof(color), color, null);
}
// Update all groups liberties/adjacent data
foreach (Group g in _groups.Values)
{
g.RemoveStone(coord);
}
}
// Remove the group from the board
DeleteGroup(capturedGroup);
}
public override void MergeGroup(AbGroup slaveGroup)
{
_stones.UnionWith(slaveGroup.GetStones());
_liberties.UnionWith(slaveGroup.GetLiberties());
_adjacent.UnionWith(slaveGroup.GetAdjacent());
foreach (Coord coord in _stones)
{
_liberties.RemoveWhere(c => c.Row == coord.Row && c.Column == coord.Column);
}
}
